240 Area Code

Maryland, US

Area code 240 is associated with Maryland, US.
Use the search box below to find owner details for any specific phone number.

Reverse Phone Lookup

Active Exchanges in the 240 Area Code

NXXRegionTypeCompany
240-200-XXXXWashington Zone 2, MDLandlineBANDWIDTH.COM CLEC, LLC - MD
240-201-XXXXRidge, MDLandlinePEERLESS NETWORK OF MARYLAND, LLC
240-203-XXXXHagerstown, MDCellphoneSPRINT SPECTRUM L.P. - MD
240-204-XXXXWashington Zone 2, MDCellphoneCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
240-205-XXXXWashington Zone 10, MDCellphoneNEW CINGULAR WIRELESS PCS, LLC - DC
240-206-XXXXWashington Zone 14, MDLandlineXO MARYLAND, LLC
240-207-XXXXDamascus, MDLandlineCAVALIER EAST LLC - MD
240-208-XXXXLa Plata, MDLandlinePEERLESS NETWORK OF MARYLAND, LLC
240-209-XXXXIndian Head, MDLandlinePEERLESS NETWORK OF MARYLAND, LLC
240-210-XXXXWaldorf, MDCellphoneNEW CINGULAR WIRELESS PCS, LLC - DC
240-212-XXXXOakland, MDLandlineCORE COMMUNICATIONS, INC. - MD
240-213-XXXXWaldorf, MDLandlinePEERLESS NETWORK OF MARYLAND, LLC
240-214-XXXXMechanicsville, MDLandlinePEERLESS NETWORK OF MARYLAND, LLC
240-215-XXXXFrederick, MDLandlineTELCOVE OPERATIONS, INC. - MD
240-216-XXXXWaldorf, MDCellphoneSPRINT SPECTRUM L.P.
240-217-XXXXHagerstown, MDCellphoneOMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC
240-218-XXXXNanjemoy, MDLandlinePEERLESS NETWORK OF MARYLAND, LLC
240-219-XXXXRidge, MDLandlinePEERLESS NETWORK OF MARYLAND, LLC
240-220-XXXXPoolesville, MDLandlinePEERLESS NETWORK OF MARYLAND, LLC
240-221-XXXXWashington Zone 11, MDLandlineVERIZON MARYLAND, INC.
240-222-XXXXWaldorf, MDLandlineCAVALIER TELEPHONE MID-ATLANTIC, LLC - MD
240-223-XXXXWashington Zone 2, MDLandlineALLEGIANCE TELECOM, INC. - MD
240-224-XXXXGaithersburg, MDCellphoneCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
240-225-XXXXFrederick, MDLandlineCORE COMMUNICATIONS, INC. - MD
240-228-XXXXWashington Zone 13, MDLandlineVERIZON MARYLAND, INC.
240-229-XXXXWaldorf, MDLandlineBROADWING COMMUNICATIONS. LLC - MD
240-230-XXXXHughesville, MDLandlineGLOBAL CROSSING LOCAL SERVICES, INC.-MD
240-231-XXXXHagerstown, MDLandlineCORE COMMUNICATIONS, INC. - MD
240-232-XXXXWashington Zone 14, MDLandlineBROADWING COMMUNICATIONS. LLC - MD
240-233-XXXXTompkinsville, MDLandlineTELEPORT COMMUNICATIONS AMERICA, LLC - DC
240-234-XXXXWashington Zone 2, MDCellphoneCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
240-235-XXXXWashington Zone 2, MDLandlinePAETEC COMMUNICATIONS, INC. - MD
240-236-XXXXFrederick, MDLandlineVERIZON MARYLAND, INC.
240-237-XXXXLexington Park-Great Mills, MDLandlineTELEPORT COMMUNICATIONS AMERICA, LLC - DC
240-238-XXXXWashington Zone 10, MDLandlinePAETEC COMMUNICATIONS, INC. - MD
240-239-XXXXLeonardtown, MDLandlineCORE COMMUNICATIONS, INC. - MD
240-241-XXXXWashington Zone 13, MDLandlineSTARPOWER COMMUNICATIONS, LLC - MD
240-242-XXXXWashington Zone 11, MDLandlineSTARPOWER COMMUNICATIONS, LLC - MD
240-243-XXXXGaithersburg, MDLandlineALLEGIANCE TELECOM, INC. - MD
240-244-XXXXWashington Zone 16, MDLandlineSTARPOWER COMMUNICATIONS, LLC - MD
240-245-XXXXWashington Zone 14, MDLandlineSTARPOWER COMMUNICATIONS, LLC - MD
240-246-XXXXGaithersburg, MDLandlineSTARPOWER COMMUNICATIONS, LLC - MD
240-247-XXXXWashington Zone 3, MDLandlineALLEGIANCE TELECOM, INC. - MD
240-248-XXXXRidge, MDLandlinePEERLESS NETWORK OF MARYLAND, LLC
240-249-XXXXMechanicsville, MDLandlineTELEPORT COMMUNICATIONS AMERICA, LLC - DC
240-250-XXXXBrandywine, MDLandlinePEERLESS NETWORK OF MARYLAND, LLC
240-251-XXXXHighfield, MDLandlineCORE COMMUNICATIONS, INC. - MD
240-252-XXXXGaithersburg, MDLandlineLEVEL 3 COMMUNICATIONS, LLC - MD
240-253-XXXXWashington Zone 6, MDLandlineGLOBAL CROSSING LOCAL SERVICES, INC.-MD
240-254-XXXXHughesville, MDLandlineTELEPORT COMMUNICATIONS AMERICA, LLC - DC
240-255-XXXXPoolesville, MDLandlinePEERLESS NETWORK OF MARYLAND, LLC
240-256-XXXXLeonardtown, MDLandlineTELEPORT COMMUNICATIONS AMERICA, LLC - DC
240-257-XXXXNanjemoy, MDLandlineTELEPORT COMMUNICATIONS AMERICA, LLC - DC
240-258-XXXXRidge, MDLandlineTELEPORT COMMUNICATIONS AMERICA, LLC - DC
240-260-XXXXWashington Zone 14, MDLandlineALLEGIANCE TELECOM, INC. - MD
240-261-XXXXGaithersburg, MDLandlineNEUTRAL TANDEM-MARYLAND, LLC - MD
240-262-XXXXLexington Park-Great Mills, MDCellphoneSPRINT SPECTRUM L.P.
240-263-XXXXWashington Zone 2, MDCellphoneSPRINT SPECTRUM L.P.
240-264-XXXXLaurel, MDLandlineVERIZON MARYLAND, INC.
240-265-XXXXWashington Zone 2, MDCellphoneSPRINT SPECTRUM L.P.
240-266-XXXXWashington Zone 14, MDLandlinePEERLESS NETWORK OF MARYLAND, LLC
240-267-XXXXHagerstown, MDCellphoneCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
240-268-XXXXWashington Zone 10, MDLandlineALLEGIANCE TELECOM, INC. - MD
240-269-XXXXWashington Zone 16, MDLandlinePEERLESS NETWORK OF MARYLAND, LLC
240-270-XXXXWaldorf, MDCellphoneCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
240-271-XXXXWashington Zone 2, MDCellphoneNEW CINGULAR WIRELESS PCS, LLC - DC
240-272-XXXXWashington Zone 2, MDCellphoneSPRINT SPECTRUM L.P.
240-273-XXXXWashington Zone 6, MDLandlineBROADWING COMMUNICATIONS. LLC - MD
240-274-XXXXWashington Zone 2, MDCellphoneNEW CINGULAR WIRELESS PCS, LLC - DC
240-275-XXXXGrantsville, MDLandlineCORE COMMUNICATIONS, INC. - MD
240-276-XXXXWashington Zone 10, MDLandlineVERIZON MARYLAND, INC.
240-277-XXXXWashington Zone 2, MDCellphoneSPRINT SPECTRUM L.P.
240-278-XXXXLaurel, MDCellphoneCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
240-279-XXXXWaldorf, MDLandlineCORE COMMUNICATIONS, INC. - MD
240-280-XXXXLaurel, MDLandlineCOMCAST PHONE OF NORTHERN MARYLAND, INC. - MD
240-281-XXXXWashington Zone 2, MDCellphoneNEW CINGULAR WIRELESS PCS, LLC - DC
240-282-XXXXMechanicsville, MDLandlinePEERLESS NETWORK OF MARYLAND, LLC
240-283-XXXXWashington Zone 11, MDLandlinePAETEC COMMUNICATIONS, INC. - MD
240-284-XXXXFrostburg, MDLandlineLEVEL 3 COMMUNICATIONS, LLC - MD
240-285-XXXXFrederick, MDCellphoneCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
240-286-XXXXWashington Zone 2, MDCellphoneSPRINT SPECTRUM L.P.
240-287-XXXXHancock, MDLandlineCORE COMMUNICATIONS, INC. - MD
240-288-XXXXThurmont, MDLandlineCOMCAST PHONE OF NORTHERN MARYLAND, INC. - MD
240-289-XXXXWashington Zone 6, MDLandlineCAVALIER TELEPHONE MID-ATLANTIC, LLC - MD
240-290-XXXXWashington Zone 11, MDLandlineALLEGIANCE TELECOM, INC. - MD
240-291-XXXXHagerstown, MDCellphoneNEW CINGULAR WIRELESS PCS, LLC - DC
240-292-XXXXWashington Zone 11, MDLandlineVERIZON MARYLAND, INC.
240-293-XXXXWashington Zone 12, MDLandlineSTARPOWER COMMUNICATIONS, LLC - MD
240-294-XXXXLaurel, MDLandlineXO MARYLAND, LLC
240-295-XXXXLaurel, MDLandlineCAVALIER TELEPHONE MID-ATLANTIC, LLC - MD
240-296-XXXXWashington Zone 4, MDLandlineCAVALIER TELEPHONE MID-ATLANTIC, LLC - MD
240-297-XXXXWashington Zone 13, MDLandlineLEVEL 3 COMMUNICATIONS, LLC - MD
240-298-XXXXLeonardtown, MDCellphoneCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
240-299-XXXXWaldorf, MDCellphoneSPRINT SPECTRUM L.P.
240-300-XXXXWaldorf, MDCellphoneCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
240-302-XXXXLaurel, MDCellphoneNEW CINGULAR WIRELESS PCS, LLC - DC
240-303-XXXXWashington Zone 16, MDLandlineCAVALIER TELEPHONE MID-ATLANTIC, LLC - MD
240-304-XXXXWashington Zone 5, MDCellphoneSPRINT SPECTRUM L.P.
240-305-XXXXWashington Zone 3, MDCellphoneSPRINT SPECTRUM L.P.
240-306-XXXXGaithersburg, MDLandlineALLEGIANCE TELECOM, INC. - MD
240-307-XXXXEmmitsburg, MDLandlineAT&T LOCAL
240-308-XXXXDamascus, MDCellphoneNEW CINGULAR WIRELESS PCS, LLC - DC
240-309-XXXXLeonardtown, MDCellphoneCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
240-310-XXXXHagerstown, MDCellphoneUSCOC OF CUMBERLAND, INC. DBA UNITED STATES CEL MD
240-312-XXXXWashington Zone 5, MDLandlineCAVALIER TELEPHONE MID-ATLANTIC, LLC - MD
240-313-XXXXHagerstown, MDLandlineVERIZON MARYLAND, INC.
240-314-XXXXWashington Zone 10, MDLandlineVERIZON MARYLAND, INC.
240-315-XXXXFrederick, MDLandlineVERIZON MARYLAND, INC.
240-316-XXXXWashington Zone 2, MDCellphoneSPRINT SPECTRUM L.P.
240-317-XXXXLexington Park-Great Mills, MDLandlineSTARPOWER COMMUNICATIONS, LLC - MD
240-318-XXXXWashington Zone 16, MDLandlineVERIZON MARYLAND, INC.
240-319-XXXXLaurel (Baltimore LATA), MDCellphoneCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
240-320-XXXXWaldorf, MDLandlineCAVALIER EAST LLC - MD
240-321-XXXXOakland, MDCellphoneUSCOC OF CUMBERLAND, INC. DBA UNITED STATES CEL MD
240-322-XXXXMcCoole, MDLandlineCORE COMMUNICATIONS, INC. - MD
240-323-XXXXEmmitsburg, MDLandlineCORE COMMUNICATIONS, INC. - MD
240-324-XXXXAshton (Baltimore LATA), MDLandlineYMAX COMMUNICATIONS CORP. - MD
240-325-XXXXDamascus, MDLandlineCORE COMMUNICATIONS, INC. - MD
240-326-XXXXWashington Zone 15, MDLandlineCAVALIER TELEPHONE MID-ATLANTIC, LLC - MD
240-327-XXXXGaithersburg, MDLandlineCORE COMMUNICATIONS, INC. - MD
240-328-XXXXWashington Zone 10, MDLandlineVERIZON MARYLAND, INC.
240-329-XXXXHagerstown, MDLandlineLEVEL 3 COMMUNICATIONS, LLC - MD
240-330-XXXXWashington Zone 2, MDCellphoneSPRINT SPECTRUM L.P.
240-331-XXXXWashington Zone 3, MDLandlinePEERLESS NETWORK OF MARYLAND, LLC
240-332-XXXXTompkinsville, MDLandlinePEERLESS NETWORK OF MARYLAND, LLC
240-333-XXXXWashington Zone 2, MDLandlineCAVALIER EAST LLC - MD
240-334-XXXXWashington Zone 14, MDLandlineGLOBAL CROSSING LOCAL SERVICES, INC.-MD
240-335-XXXXWashington Zone 14, MDLandlineCAVALIER TELEPHONE MID-ATLANTIC, LLC - MD
240-336-XXXXWashington Zone 2, MDLandlineCORE COMMUNICATIONS, INC. - MD
240-337-XXXXWashington Zone 5, MDLandlinePEERLESS NETWORK OF MARYLAND, LLC
240-338-XXXXWashington Zone 3, MDCellphoneCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
240-339-XXXXWashington Zone 15, MDLandlineCAVALIER EAST LLC - MD
240-340-XXXXWashington Zone 2, MDCellphoneSPRINT SPECTRUM L.P.
240-341-XXXXBuckeystown, MDLandlineMCI WORLDCOM COMMUNICATIONS, INC. - MD
240-342-XXXXAshton, MDLandlineSTARPOWER COMMUNICATIONS, LLC - MD
240-343-XXXXHancock, MDCellphoneCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
240-344-XXXXFrederick, MDCellphoneNEW CINGULAR WIRELESS PCS, LLC - DC
240-345-XXXXAshton (Baltimore LATA), MDLandlineLEVEL 3 COMMUNICATIONS, LLC - MD
240-346-XXXXWaldorf, MDCellphoneSPRINT SPECTRUM L.P.
240-347-XXXXHagerstown, MDLandlineBANDWIDTH.COM CLEC, LLC - MD
240-348-XXXXWashington Zone 16, MDLandlineLEVEL 3 COMMUNICATIONS, LLC - MD
240-349-XXXXLa Plata, MDLandlineGLOBAL CROSSING LOCAL SERVICES, INC.-MD
240-350-XXXXWashington Zone 3, MDCellphoneSPRINT SPECTRUM L.P.
240-351-XXXXWashington Zone 3, MDCellphoneSPRINT SPECTRUM L.P.
240-352-XXXXLa Plata, MDLandlinePEERLESS NETWORK OF MARYLAND, LLC
240-353-XXXXWashington Zone 3, MDCellphoneSPRINT SPECTRUM L.P.
240-354-XXXXWashington Zone 3, MDCellphoneSPRINT SPECTRUM L.P.
240-355-XXXXWashington Zone 3, MDCellphoneSPRINT SPECTRUM L.P.
240-356-XXXXMyersville, MDLandlineLEVEL 3 COMMUNICATIONS, LLC - MD
240-357-XXXXFrederick, MDCellphoneCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
240-358-XXXXDamascus, MDLandlinePEERLESS NETWORK OF MARYLAND, LLC
240-359-XXXXIndian Head, MDLandlinePEERLESS NETWORK OF MARYLAND, LLC
240-360-XXXXLaurel, MDCellphoneOMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC
240-361-XXXXGaithersburg, MDLandlineCAVALIER TELEPHONE MID-ATLANTIC, LLC - MD
240-362-XXXXCumberland, MDLandlineVERIZON MARYLAND, INC.
240-363-XXXXWashington Zone 11, MDLandlineGLOBAL NAPS SOUTH, INC. - MD
240-364-XXXXGaithersburg, MDLandlineCAVALIER EAST LLC - MD
240-365-XXXXDamascus, MDLandlineBALTIMORE-WASHINGTON TELEPHONE (BWT)
240-366-XXXXWilliamsport, MDLandlineAT&T LOCAL
240-367-XXXXFrederick, MDCellphoneSPRINT SPECTRUM L.P.
240-368-XXXXWaldorf, MDLandlinePEERLESS NETWORK OF MARYLAND, LLC
240-369-XXXXMount Airy, MDLandlineCORE COMMUNICATIONS, INC. - MD
240-370-XXXXWashington Zone 2, MDCellphoneSPRINT SPECTRUM L.P.
240-371-XXXXWashington Zone 12, MDLandlinePEERLESS NETWORK OF MARYLAND, LLC
240-372-XXXXGaithersburg, MDCellphoneSPRINT SPECTRUM L.P.
240-373-XXXXWashington Zone 13, MDLandlineVERIZON MARYLAND, INC.
240-374-XXXXLaurel, MDLandlineGLOBAL CROSSING LOCAL SERVICES, INC.-MD
240-375-XXXXWashington Zone 5, MDCellphoneSPRINT SPECTRUM L.P.
240-376-XXXXHughesville, MDLandlinePEERLESS NETWORK OF MARYLAND, LLC
240-377-XXXXIndian Head, MDLandlineGLOBAL CROSSING LOCAL SERVICES, INC.-MD
240-378-XXXXCumberland, MDLandlineCORE COMMUNICATIONS, INC. - MD
240-379-XXXXFrederick, MDLandlineVERIZON MARYLAND, INC.
240-380-XXXXWashington Zone 2, MDCellphoneCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
240-381-XXXXWashington Zone 3, MDCellphoneNEW CINGULAR WIRELESS PCS, LLC - DC
240-382-XXXXHagerstown, MDLandlineTELEPORT COMMUNICATIONS AMERICA, LLC - MD
240-383-XXXXWashington Zone 2, MDCellphoneNEW CINGULAR WIRELESS PCS, LLC - DC
240-384-XXXXLexington Park-Great Mills, MDLandlinePEERLESS NETWORK OF MARYLAND, LLC
240-385-XXXXMyersville, MDLandlineVERIZON MARYLAND, INC.
240-386-XXXXWashington Zone 10, MDLandlineVERIZON MARYLAND, INC.
240-387-XXXXWashington Zone 13, MDLandlineCAVALIER EAST LLC - MD
240-388-XXXXGaithersburg, MDCellphoneSPRINT SPECTRUM L.P.
240-389-XXXXAshton, MDLandlineATX TELECOMMUNICATIONS SERVICES, LTD
240-390-XXXXAshton, MDLandlineCAVALIER TELEPHONE MID-ATLANTIC, LLC - MD
240-391-XXXXWashington Zone 13, MDLandlineGLOBAL CROSSING LOCAL SERVICES, INC.-MD
240-392-XXXXWashington Zone 5, MDLandlineSTARPOWER COMMUNICATIONS, LLC - MD
240-393-XXXXWashington Zone 3, MDCellphoneCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
240-394-XXXXMount Airy, MDCellphoneNEW CINGULAR WIRELESS PCS, LLC - DC
240-395-XXXXWashington Zone 2, MDLandlineCAVALIER TELEPHONE MID-ATLANTIC, LLC - MD
240-396-XXXXWashington Zone 2, MDLandlineGLOBAL CROSSING LOCAL SERVICES, INC.-MD
240-397-XXXXFrederick, MDCellphoneCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
240-398-XXXXWashington Zone 3, MDCellphoneSPRINT SPECTRUM L.P.
240-399-XXXXWashington Zone 10, MDLandlineXO MARYLAND, LLC
240-400-XXXXWashington Zone 2, MDCellphoneSPRINT SPECTRUM L.P.
240-401-XXXXWashington Zone 10, MDCellphoneNEW CINGULAR WIRELESS PCS, LLC - DC
240-402-XXXXWashington Zone 13, MDLandlineMCI WORLDCOM COMMUNICATIONS, INC. - MD
240-403-XXXXWashington Zone 10, MDLandlineCAVALIER TELEPHONE MID-ATLANTIC, LLC - MD
240-404-XXXXGaithersburg, MDLandlineXO MARYLAND, LLC
240-405-XXXXFrederick, MDLandlineUS LEC OF MARYLAND, INC.
240-406-XXXXWashington Zone 10, MDCellphoneNEW CINGULAR WIRELESS PCS, LLC - DC
240-407-XXXXWashington Zone 16, MDLandlineGLOBAL CROSSING LOCAL SERVICES, INC.-MD
240-408-XXXXWashington Zone 10, MDCellphoneNEW CINGULAR WIRELESS PCS, LLC - DC
240-409-XXXXFrederick, MDCellphoneNEW CINGULAR WIRELESS PCS, LLC - DC
240-412-XXXXWaldorf, MDCellphoneSPRINT SPECTRUM L.P.
240-413-XXXXWashington Zone 4, MDCellphoneOMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC
240-414-XXXXWashington Zone 6, MDLandlinePEERLESS NETWORK OF MARYLAND, LLC
240-415-XXXXFrederick, MDLandlineYMAX COMMUNICATIONS CORP. - MD
240-416-XXXXWaldorf, MDCellphoneNEW CINGULAR WIRELESS PCS, LLC - DC
240-417-XXXXWashington Zone 5, MDCellphoneSPRINT SPECTRUM L.P.
240-418-XXXXWashington Zone 2, MDCellphoneSPRINT SPECTRUM L.P.
240-419-XXXXWaldorf, MDCellphoneCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
240-420-XXXXHagerstown, MDLandlineVERIZON MARYLAND, INC.
240-421-XXXXWashington Zone 10, MDCellphoneOMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC
240-422-XXXXFrederick, MDCellphoneOMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC
240-423-XXXXWashington Zone 3, MDCellphoneOMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC
240-424-XXXXWashington Zone 3, MDCellphoneSPRINT SPECTRUM L.P.
240-425-XXXXWashington Zone 2, MDLandlineDSLNET COMMUNICATIONS VA, INC. - MD
240-426-XXXXWashington Zone 2, MDCellphoneSPRINT SPECTRUM L.P.
240-427-XXXXWaldorf, MDLandlineXO MARYLAND, LLC
240-428-XXXXWashington Zone 10, MDLandlineBANDWIDTH.COM CLEC, LLC - MD
240-429-XXXXWashington Zone 3, MDCellphoneCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
240-430-XXXXWashington Zone 11, MDLandlineCAVALIER TELEPHONE MID-ATLANTIC, LLC - MD
240-431-XXXXLexington Park-Great Mills, MDCellphoneSPRINT SPECTRUM L.P.
240-432-XXXXWashington Zone 3, MDCellphoneSPRINT SPECTRUM L.P.
240-433-XXXXWashington Zone 12, MDLandlineCAVALIER TELEPHONE MID-ATLANTIC, LLC - MD
240-434-XXXXLeonardtown, MDLandlineBROADWING COMMUNICATIONS. LLC - MD
240-435-XXXXWaldorf, MDCellphoneCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
240-436-XXXXBuckeystown, MDLandlineTELCOVE OPERATIONS, INC. - MD
240-437-XXXXAshton, MDLandlineXO MARYLAND, LLC
240-438-XXXXWashington Zone 3, MDCellphoneSPRINT SPECTRUM L.P.
240-439-XXXXFrederick, MDCellphoneCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
240-440-XXXXFrederick, MDCellphoneNEW CINGULAR WIRELESS PCS, LLC - DC
240-441-XXXXWashington Zone 6, MDCellphoneOMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC
240-442-XXXXOakland, MDLandlineVERIZON MARYLAND, INC.
240-444-XXXXLaurel, MDCellphoneCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
240-445-XXXXWashington Zone 2, MDCellphoneSPRINT SPECTRUM L.P.
240-446-XXXXFrederick, MDCellphoneCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
240-447-XXXXWashington Zone 10, MDCellphoneNEW CINGULAR WIRELESS PCS, LLC - DC
240-448-XXXXWaldorf, MDCellphoneSPRINT SPECTRUM L.P.
240-449-XXXXGaithersburg, MDCellphoneNEW CINGULAR WIRELESS PCS, LLC - DC
240-450-XXXXWashington Zone 3, MDLandlineCAVALIER TELEPHONE MID-ATLANTIC, LLC - MD
240-451-XXXXThurmont, MDLandlineNEUTRAL TANDEM-MARYLAND, LLC - MD
240-452-XXXXHagerstown, MDLandlineLUMOS NETWORKS INC. - VA
240-453-XXXXWashington Zone 10, MDLandlineVERIZON MARYLAND, INC.
240-454-XXXXGaithersburg, MDLandlinePAETEC COMMUNICATIONS, INC. - MD
240-455-XXXXWashington Zone 5, MDLandlinePAETEC COMMUNICATIONS, INC. - MD
240-456-XXXXLaurel, MDLandlineVERIZON MARYLAND, INC.
240-457-XXXXFrederick, MDCellphoneCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
240-458-XXXXWaldorf, MDCellphoneCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
240-459-XXXXLaurel, MDCellphoneCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
240-460-XXXXWashington Zone 3, MDCellphoneNEW CINGULAR WIRELESS PCS, LLC - DC
240-461-XXXXWashington Zone 3, MDCellphoneNEW CINGULAR WIRELESS PCS, LLC - DC
240-462-XXXXWashington Zone 3, MDCellphoneSPRINT SPECTRUM L.P.
240-463-XXXXWashington Zone 3, MDCellphoneNEW CINGULAR WIRELESS PCS, LLC - DC
240-464-XXXXWashington Zone 2, MDCellphoneSPRINT SPECTRUM L.P.
240-465-XXXXWashington Zone 2, MDLandlinePEERLESS NETWORK OF MARYLAND, LLC
240-466-XXXXMechanicsville, MDCellphoneNEW CINGULAR WIRELESS PCS, LLC - DC
240-467-XXXXWashington Zone 4, MDLandlineCOMCAST PHONE OF NORTHERN MARYLAND, INC. - MD
240-468-XXXXWashington Zone 3, MDCellphoneSPRINT SPECTRUM L.P.
240-469-XXXXHagerstown, MDCellphoneSPRINT SPECTRUM L.P. - MD
240-470-XXXXLaurel, MDCellphoneCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
240-471-XXXXWashington Zone 12, MDLandlineGLOBAL CROSSING LOCAL SERVICES, INC.-MD
240-472-XXXXWashington Zone 3, MDCellphoneNEW CINGULAR WIRELESS PCS, LLC - DC
240-473-XXXXWashington Zone 13, MDLandlineCAVALIER TELEPHONE MID-ATLANTIC, LLC - MD
240-474-XXXXGaithersburg, MDLandlineBALTIMORE-WASHINGTON TELEPHONE (BWT)
240-475-XXXXWashington Zone 3, MDCellphoneNEW CINGULAR WIRELESS PCS, LLC - DC
240-476-XXXXWashington Zone 3, MDCellphoneOMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC
240-477-XXXXGaithersburg, MDLandlineLIGHTWAVE COMMUNICATIONS, LLC - MD
240-478-XXXXWashington Zone 3, MDCellphoneNEW CINGULAR WIRELESS PCS, LLC - DC
240-479-XXXXWashington Zone 2, MDCellphoneCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
240-480-XXXXWashington Zone 2, MDCellphoneSPRINT SPECTRUM L.P.
240-481-XXXXWashington Zone 3, MDCellphoneOMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC
240-482-XXXXWashington Zone 2, MDLandlineUS LEC OF MARYLAND, INC.
240-483-XXXXWashington Zone 2, MDLandlineCOMCAST PHONE OF NORTHERN MARYLAND, INC. - MD
240-484-XXXXLaurel, MDCellphoneNEW CINGULAR WIRELESS PCS, LLC - DC
240-485-XXXXWashington Zone 3, MDLandlineUS LEC OF MARYLAND, INC.
240-486-XXXXWashington Zone 14, MDCellphoneOMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC
240-487-XXXXWashington Zone 4, MDLandlineUS LEC OF MARYLAND, INC.
240-488-XXXXOakland, MDLandlineSHENTEL COMMUNICATIONS, LLC - MD
240-489-XXXXPoolesville, MDLandlineXO MARYLAND, LLC
240-490-XXXXMiddletown, MDCellphoneOMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC
240-491-XXXXWashington Zone 3, MDLandlineGLOBAL CROSSING LOCAL SERVICES, INC.-MD
240-492-XXXXWashington Zone 5, MDLandlineUS LEC OF MARYLAND, INC.
240-493-XXXXWashington Zone 6, MDLandlineUS LEC OF MARYLAND, INC.
240-494-XXXXWashington Zone 3, MDLandlineCAVALIER EAST LLC - MD
240-495-XXXXWashington Zone 4, MDCellphoneCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
240-496-XXXXLeonardtown, MDCellphoneCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
240-497-XXXXWashington Zone 2, MDLandlineVERIZON MARYLAND, INC.
240-498-XXXXWashington Zone 2, MDCellphoneSPRINT SPECTRUM L.P.
240-499-XXXXWashington Zone 10, MDLandlineUS LEC OF MARYLAND, INC.
240-500-XXXXHagerstown, MDLandlineUS LEC OF MARYLAND, INC.
240-501-XXXXWashington Zone 3, MDCellphoneSPRINT SPECTRUM L.P.
240-502-XXXXWashington Zone 3, MDCellphoneSPRINT SPECTRUM L.P.
240-503-XXXXTompkinsville, MDLandlinePEERLESS NETWORK OF MARYLAND, LLC
240-504-XXXXWashington Zone 3, MDCellphoneSPRINT SPECTRUM L.P.
240-505-XXXXWashington Zone 3, MDCellphoneOMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC
240-506-XXXXWashington Zone 10, MDCellphoneNEW CINGULAR WIRELESS PCS, LLC - DC
240-507-XXXXWashington Zone 2, MDCellphoneCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
240-508-XXXXWashington Zone 5, MDCellphoneSPRINT SPECTRUM L.P.
240-509-XXXXWashington Zone 14 (Baltimore LATA), MDLandlineBANDWIDTH.COM CLEC, LLC - MD
240-510-XXXXWashington Zone 15, MDLandlineXO MARYLAND, LLC
240-512-XXXXWashington Zone 13 (Baltimore LATA), MDLandlineCORE COMMUNICATIONS, INC. - MD
240-513-XXXXHagerstown, MDCellphoneSPRINT SPECTRUM L.P. - MD
240-514-XXXXWashington Zone 11, MDLandlineUS LEC OF MARYLAND, INC.
240-515-XXXXWashington Zone 2, MDCellphoneNEW CINGULAR WIRELESS PCS, LLC - DC
240-516-XXXXWashington Zone 12, MDLandlineUS LEC OF MARYLAND, INC.
240-517-XXXXLaurel (Baltimore LATA), MDCellphoneCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
240-518-XXXXWaldorf, MDCellphoneSPRINT SPECTRUM L.P.
240-519-XXXXWashington Zone 2, MDCellphoneSPRINT SPECTRUM L.P.
240-520-XXXXHagerstown, MDCellphoneSPRINT SPECTRUM L.P. - MD
240-522-XXXXCumberland, MDCellphoneSPRINT SPECTRUM L.P.
240-523-XXXXLa Plata, MDLandlineXO MARYLAND, LLC
240-524-XXXXLaurel, MDLandlinePEERLESS NETWORK OF MARYLAND, LLC
240-525-XXXXWashington Zone 15, MDLandlinePEERLESS NETWORK OF MARYLAND, LLC
240-526-XXXXLeonardtown, MDLandlinePEERLESS NETWORK OF MARYLAND, LLC
240-527-XXXXHagerstown, MDLandlineVERIZON MARYLAND, INC.
240-528-XXXXHughesville, MDLandlineBROADWING COMMUNICATIONS. LLC - MD
240-529-XXXXFrederick, MDLandlineVERIZON MARYLAND, INC.
240-530-XXXXWaldorf, MDLandlineLOCAL ACCESS LLC - MD
240-531-XXXXWashington Zone 3, MDLandlineTELNYX LLC
240-532-XXXXWashington Zone 5, MDCellphoneCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
240-533-XXXXWashington Zone 3, MDLandlineTELEPORT COMMUNICATIONS AMERICA, LLC - DC
240-534-XXXXWashington Zone 2, MDCellphoneCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
240-535-XXXXWashington Zone 3, MDCellphoneNEW CINGULAR WIRELESS PCS, LLC - DC
240-536-XXXXAshton, MDLandlinePEERLESS NETWORK OF MARYLAND, LLC
240-537-XXXXHagerstown, MDLandlineATLANTECH ONLINE, INC. - MD
240-538-XXXXLeonardtown, MDLandlineXO MARYLAND, LLC
240-539-XXXXWashington Zone 4, MDLandlinePEERLESS NETWORK OF MARYLAND, LLC
240-540-XXXXWashington Zone 13 (Baltimore LATA), MDLandlineWIDE VOICE, LLC - MD
240-541-XXXXWashington Zone 2, MDCellphoneSPRINT SPECTRUM L.P.
240-542-XXXXWashington Zone 13, MDLandlineUS LEC OF MARYLAND, INC.
240-543-XXXXWashington Zone 2, MDCellphoneSPRINT SPECTRUM L.P.
240-544-XXXXWashington Zone 14, MDLandlineUS LEC OF MARYLAND, INC.
240-545-XXXXWashington Zone 15, MDLandlineUS LEC OF MARYLAND, INC.
240-546-XXXXWashington Zone 16, MDLandlineUS LEC OF MARYLAND, INC.
240-547-XXXXLaurel, MDLandlineLEVEL 3 COMMUNICATIONS, LLC - MD
240-548-XXXXWashington Zone 14, MDLandlineALLEGIANCE TELECOM, INC. - MD
240-549-XXXXFrederick, MDCellphoneCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
240-550-XXXXWashington Zone 10, MDCellphoneNEW CINGULAR WIRELESS PCS, LLC - DC
240-551-XXXXWashington Zone 10, MDCellphoneNEW CINGULAR WIRELESS PCS, LLC - DC
240-552-XXXXWashington Zone 10, MDCellphoneNEW CINGULAR WIRELESS PCS, LLC - DC
240-553-XXXXWashington Zone 13, MDLandlineALLEGIANCE TELECOM, INC. - MD
240-554-XXXXLaurel, MDLandlineALLEGIANCE TELECOM, INC. - MD
240-556-XXXXWashington Zone 14, MDLandlinePAETEC COMMUNICATIONS, INC. - MD
240-557-XXXXWashington Zone 6, MDCellphoneOMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC
240-558-XXXXWashington Zone 11, MDLandlineCAVALIER TELEPHONE MID-ATLANTIC, LLC - MD
240-559-XXXXAshton, MDLandlineALLEGIANCE TELECOM, INC. - MD
240-560-XXXXWashington Zone 12, MDLandlineXO MARYLAND, LLC
240-561-XXXXLeonardtown, MDCellphoneCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
240-562-XXXXGaithersburg, MDLandlineMCIMETRO ACCESS TRANSMISSION SERVICES LLC
240-563-XXXXWashington Zone 5, MDLandlineNEUTRAL TANDEM-MARYLAND, LLC - MD
240-564-XXXXLaurel (Baltimore LATA), MDCellphoneCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
240-565-XXXXLaurel (Baltimore LATA), MDCellphoneOMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC
240-566-XXXXFrederick, MDLandlineVERIZON MARYLAND, INC.
240-567-XXXXWashington Zone 10, MDLandlineVERIZON MARYLAND, INC.
240-568-XXXXLaurel, MDLandlineVERIZON MARYLAND, INC.
240-569-XXXXFlintstone, MDLandlineBANDWIDTH.COM CLEC, LLC - MD
240-570-XXXXAshton (Baltimore LATA), MDLandlineNEUTRAL TANDEM-MARYLAND, LLC - MD
240-573-XXXXWashington Zone 15, MDLandlineGLOBAL CROSSING LOCAL SERVICES, INC.-MD
240-575-XXXXFrederick, MDLandlineLEVEL 3 COMMUNICATIONS, LLC - MD
240-577-XXXXLeonardtown, MDCellphoneCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
240-578-XXXXFrederick, MDCellphoneCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
240-580-XXXXCumberland, MDCellphoneSPRINT SPECTRUM L.P.
240-581-XXXXLaurel, MDLandlinePAETEC COMMUNICATIONS, INC. - DC
240-582-XXXXWashington Zone 4, MDLandlineVERIZON MARYLAND, INC.
240-583-XXXXLaurel, MDLandlineVERIZON MARYLAND, INC.
240-585-XXXXWaldorf, MDCellphoneCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
240-586-XXXXFrederick, MDLandlineVERIZON MARYLAND, INC.
240-587-XXXXLeonardtown, MDCellphoneCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
240-592-XXXXWashington Zone 13, MDLandlineVERIZON MARYLAND, INC.
240-593-XXXXLaurel (Baltimore LATA), MDCellphoneOMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC
240-595-XXXXWashington Zone 3, MDCellphoneCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
240-597-XXXXGaithersburg, MDLandlinePEERLESS NETWORK OF MARYLAND, LLC
240-599-XXXXWashington Zone 10, MDLandlineBROADWING COMMUNICATIONS. LLC - MD
240-600-XXXXWashington Zone 2, MDCellphoneSPRINT SPECTRUM L.P.
240-601-XXXXWashington Zone 3, MDCellphoneSPRINT SPECTRUM L.P.
240-602-XXXXWashington Zone 3, MDCellphoneSPRINT SPECTRUM L.P.
240-603-XXXXWashington Zone 3, MDCellphoneSPRINT SPECTRUM L.P.
240-604-XXXXWashington Zone 3, MDCellphoneSPRINT SPECTRUM L.P.
240-605-XXXXWashington Zone 3, MDCellphoneSPRINT SPECTRUM L.P.
240-606-XXXXWashington Zone 3, MDCellphoneSPRINT SPECTRUM L.P.
240-607-XXXXWaldorf, MDLandlineGLOBAL CROSSING LOCAL SERVICES, INC.-MD
240-608-XXXXFrederick, MDCellphone365 WIRELESS, LLC
240-609-XXXXCumberland, MDCellphoneNEW CINGULAR WIRELESS PCS, LLC - DC
240-612-XXXXWashington Zone 5, MDLandlineLEVEL 3 TELECOM OF MARYLAND, LLC - MD
240-613-XXXXWashington Zone 4, MDLandlineUS LEC OF MARYLAND, INC.
240-614-XXXXWashington Zone 10, MDCellphoneMETRO PCS, INC.
240-615-XXXXWashington Zone 4, MDCellphoneMETRO PCS, INC.
240-616-XXXXWashington Zone 13, MDLandlineMCI WORLDCOM COMMUNICATIONS, INC. - MD
240-617-XXXXHighfield, MDLandlineBANDWIDTH.COM CLEC, LLC - MD
240-618-XXXXWashington Zone 10, MDCellphoneCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
240-619-XXXXWashington Zone 5, MDLandlineMCI WORLDCOM COMMUNICATIONS, INC. - MD
240-620-XXXXWashington Zone 10, MDLandlineMCI WORLDCOM COMMUNICATIONS, INC. - MD
240-621-XXXXWashington Zone 11, MDLandlineMCI WORLDCOM COMMUNICATIONS, INC. - MD
240-623-XXXXWashington Zone 4, MDLandlineBANDWIDTH.COM CLEC, LLC - MD
240-624-XXXXWashington Zone 13, MDLandlineVERIZON MARYLAND, INC.
240-625-XXXXHagerstown, MDCellphoneSPRINT SPECTRUM L.P.
240-626-XXXXFrederick, MDCellphoneSPRINT SPECTRUM L.P.
240-627-XXXXWashington Zone 11, MDLandlineGLOBAL CROSSING LOCAL SERVICES, INC.-MD
240-629-XXXXFrederick, MDLandlineVERIZON MARYLAND, INC.
240-630-XXXXWashington Zone 2, MDLandlineBANDWIDTH.COM CLEC, LLC - MD
240-631-XXXXGaithersburg, MDLandlineVERIZON MARYLAND, INC.
240-632-XXXXGaithersburg, MDLandlineVERIZON MARYLAND, INC.
240-633-XXXXHughesville, MDLandlineBALTIMORE-WASHINGTON TELEPHONE (BWT)
240-636-XXXXLaurel, MDCellphoneOMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC
240-638-XXXXWashington Zone 3, MDLandlineBROADWING COMMUNICATIONS. LLC - MD
240-640-XXXXWaldorf, MDCellphoneNEW CINGULAR WIRELESS PCS, LLC - DC
240-641-XXXXWashington Zone 3, MDLandlinePEERLESS NETWORK OF MARYLAND, LLC
240-642-XXXXWashington Zone 10, MDLandlineTIDALWAVE TELEPHONE INC.
240-643-XXXXWashington Zone 3, MDCellphoneOMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC
240-644-XXXXWashington Zone 2, MDLandlineXO MARYLAND, LLC
240-645-XXXXWashington Zone 3, MDLandlineXO MARYLAND, LLC
240-646-XXXXLaurel, MDLandlineCAVALIER EAST LLC - MD
240-650-XXXXWashington Zone 3, MDLandlineBROADVOX-CLEC, LLC - MD
240-651-XXXXFrederick, MDCellphoneCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
240-652-XXXXMechanicsville, MDLandlineXO MARYLAND, LLC
240-654-XXXXGaithersburg, MDCellphoneNEW CINGULAR WIRELESS PCS, LLC - DC
240-657-XXXXFrostburg, MDLandlineMCI WORLDCOM COMMUNICATIONS, INC. - MD
240-660-XXXXWashington Zone 10, MDCellphoneCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
240-661-XXXXLexington Park-Great Mills, MDLandlineBALTIMORE-WASHINGTON TELEPHONE (BWT)
240-662-XXXXWashington Zone 3, MDLandlineVERIZON MARYLAND, INC.
240-665-XXXXWashington Zone 10, MDCellphoneOMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC
240-666-XXXXNanjemoy, MDLandlineVOXBEAM TELECOMMUNICATIONS INC. - MD
240-667-XXXXWashington Zone 4, MDLandlineGLOBAL CROSSING LOCAL SERVICES, INC.-MD
240-668-XXXXDamascus, MDLandlineSTARPOWER COMMUNICATIONS, LLC - MD
240-669-XXXXWashington Zone 11, MDLandlineCOMCAST PHONE OF NORTHERN MARYLAND, INC. - MD
240-670-XXXXWashington Zone 3, MDLandlineLOCAL ACCESS LLC - MD
240-671-XXXXWashington Zone 2, MDCellphoneSPRINT SPECTRUM L.P.
240-672-XXXXWashington Zone 10, MDCellphoneCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
240-674-XXXXFrederick, MDCellphoneSPRINT SPECTRUM L.P.
240-675-XXXXMyersville, MDCellphoneNEW CINGULAR WIRELESS PCS, LLC - DC
240-676-XXXXWashington Zone 3, MDCellphoneCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
240-678-XXXXWashington Zone 3, MDCellphoneCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
240-681-XXXXBrandywine, MDLandlineATX TELECOMMUNICATIONS SERVICES, LTD
240-682-XXXXWaldorf, MDLandlineSTARPOWER COMMUNICATIONS, LLC - MD
240-683-XXXXGaithersburg, MDLandlineVERIZON MARYLAND, INC.
240-684-XXXXWashington Zone 13, MDLandlineVERIZON MARYLAND, INC.
240-685-XXXXBrandywine, MDLandlineGLOBAL CROSSING LOCAL SERVICES, INC.-MD
240-686-XXXXGaithersburg, MDLandlineVERIZON MARYLAND, INC.
240-687-XXXXWashington Zone 3, MDCellphoneCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
240-688-XXXXWashington Zone 3, MDCellphoneCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
240-690-XXXXGaithersburg, MDLandlineTELEPORT COMMUNICATIONS AMERICA, LLC - DC
240-691-XXXXWashington Zone 5, MDLandlineGLOBAL CROSSING LOCAL SERVICES, INC.-MD
240-694-XXXXWashington Zone 2, MDLandlineVERIZON MARYLAND, INC.
240-695-XXXXWashington Zone 5, MDLandlineVERIZON MARYLAND, INC.
240-696-XXXXWashington Zone 4, MDLandlineLEVEL 3 COMMUNICATIONS, LLC - MD
240-699-XXXXBuckeystown, MDLandlineVERIZON MARYLAND, INC.
240-701-XXXXWashington Zone 3, MDCellphoneNEW CINGULAR WIRELESS PCS, LLC - DC
240-702-XXXXGaithersburg, MDCellphoneCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
240-704-XXXXWashington Zone 3, MDCellphoneNEW CINGULAR WIRELESS PCS, LLC - DC
240-705-XXXXWashington Zone 3, MDCellphoneNEW CINGULAR WIRELESS PCS, LLC - DC
240-706-XXXXWashington Zone 3, MDCellphoneNEW CINGULAR WIRELESS PCS, LLC - DC
240-707-XXXXHagerstown, MDCellphoneNEW CINGULAR WIRELESS PCS, LLC - DC
240-708-XXXXLaurel (Baltimore LATA), MDLandlineLEVEL 3 COMMUNICATIONS, LLC - MD
240-712-XXXXLaurel (Baltimore LATA), MDCellphoneCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
240-713-XXXXLaurel, MDLandlinePEERLESS NETWORK OF MARYLAND, LLC
240-714-XXXXWashington Zone 4, MDCellphoneOMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC
240-715-XXXXWashington Zone 10, MDLandlineGLOBAL CROSSING LOCAL SERVICES, INC.-MD
240-716-XXXXWashington Zone 5, MDCellphoneOMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC
240-718-XXXXLexington Park-Great Mills, MDLandlineXO MARYLAND, LLC
240-719-XXXXWashington Zone 5, MDCellphoneCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
240-720-XXXXGaithersburg, MDLandlineGLOBAL CROSSING LOCAL SERVICES, INC.-MD
240-722-XXXXAshton, MDLandlineGLOBAL CROSSING LOCAL SERVICES, INC.-MD
240-723-XXXXWashington Zone 3, MDCellphoneCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
240-724-XXXXWashington Zone 6, MDLandlineCAVALIER EAST LLC - MD
240-725-XXXXLexington Park-Great Mills, MDLandlineVERIZON MARYLAND, INC.
240-727-XXXXCumberland, MDCellphoneNEW CINGULAR WIRELESS PCS, LLC - DC
240-731-XXXXWashington Zone 10, MDCellphoneNEW CINGULAR WIRELESS PCS, LLC - DC
240-732-XXXXMount Airy, MDCellphoneNEW CINGULAR WIRELESS PCS, LLC - DC
240-734-XXXXSmithsburg, MDLandlineBANDWIDTH.COM CLEC, LLC - MD
240-737-XXXXWashington Zone 4, MDLandlineCAVALIER EAST LLC - MD
240-740-XXXXWashington Zone 10, MDLandlineATLANTECH ONLINE, INC. - MD
240-743-XXXXWashington Zone 2, MDLandlineLOCAL ACCESS LLC - MD
240-744-XXXXWashington Zone 2, MDLandlineBROADWING COMMUNICATIONS. LLC - MD
240-745-XXXXDamascus, MDLandlineXO MARYLAND, LLC
240-747-XXXXWashington Zone 11, MDLandlineCAVALIER EAST LLC - MD
240-750-XXXXGaithersburg, MDCellphoneNEW CINGULAR WIRELESS PCS, LLC - DC
240-751-XXXXGaithersburg, MDLandlineTELCOVE OPERATIONS, INC. - MD
240-752-XXXXWashington Zone 2, MDLandlineTELCOVE OPERATIONS, INC. - MD
240-753-XXXXWashington Zone 10, MDLandlineTELCOVE OPERATIONS, INC. - MD
240-754-XXXXWaldorf, MDLandlineLEVEL 3 COMMUNICATIONS, LLC - MD
240-755-XXXXLaurel (Baltimore LATA), MDLandlineCOMCAST PHONE OF NORTHERN MARYLAND, INC. - MD
240-757-XXXXWashington Zone 13, MDLandlinePEERLESS NETWORK OF MARYLAND, LLC
240-758-XXXXLaurel, MDCellphoneNEW CINGULAR WIRELESS PCS, LLC - DC
240-760-XXXXWashington Zone 2, MDCellphoneCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
240-762-XXXXWashington Zone 2, MDCellphoneCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
240-763-XXXXWashington Zone 15 (Baltimore LATA), MDLandlineBANDWIDTH.COM CLEC, LLC - MD
240-764-XXXXWashington Zone 4, MDLandlineXO MARYLAND, LLC
240-765-XXXXWashington Zone 5, MDLandlineXO MARYLAND, LLC
240-766-XXXXWashington Zone 6, MDLandlineXO MARYLAND, LLC
240-767-XXXXWashington Zone 5, MDLandlineCAVALIER EAST LLC - MD
240-770-XXXXWashington Zone 4, MDLandlineCOMCAST PHONE OF NORTHERN MARYLAND, INC. - MD
240-771-XXXXPoolesville, MDLandlineNEUTRAL TANDEM-MARYLAND, LLC - MD
240-772-XXXXFrederick, MDCellphoneCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
240-773-XXXXWashington Zone 10, MDLandlineVERIZON MARYLAND, INC.
240-774-XXXXLonaconing, MDLandlineBANDWIDTH.COM CLEC, LLC - MD
240-775-XXXXWesternport, MDLandlineBANDWIDTH.COM CLEC, LLC - MD
240-776-XXXXLa Plata, MDLandlineBROADWING COMMUNICATIONS. LLC - MD
240-777-XXXXWashington Zone 10, MDLandlineVERIZON MARYLAND, INC.
240-778-XXXXWashington Zone 10, MDLandlineXO MARYLAND, LLC
240-779-XXXXAshton, MDLandlineCAVALIER EAST LLC - MD
240-780-XXXXGaithersburg, MDLandlineBROADWING COMMUNICATIONS. LLC - MD
240-781-XXXXWashington Zone 2, MDLandlineMCIMETRO ACCESS TRANSMISSION SERVICES LLC
240-782-XXXXDamascus, MDLandlineGLOBAL CROSSING LOCAL SERVICES, INC.-MD
240-783-XXXXWashington Zone 2, MDCellphoneMTE, INC. DBA MTE PAGING NETWORK
240-784-XXXXMyersville, MDCellphoneOMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC
240-786-XXXXLaurel, MDLandlineBROADWING COMMUNICATIONS. LLC - MD
240-787-XXXXBrandywine, MDLandlineBROADWING COMMUNICATIONS. LLC - MD
240-788-XXXXWashington Zone 5, MDLandlineBROADWING COMMUNICATIONS. LLC - MD
240-790-XXXXWashington Zone 13, MDLandlineBROADWING COMMUNICATIONS. LLC - MD
240-793-XXXXGaithersburg, MDCellphoneSPRINT SPECTRUM L.P.
240-794-XXXXLexington Park-Great Mills, MDLandlineBROADWING COMMUNICATIONS. LLC - MD
240-800-XXXXWashington Zone 2, MDLandlineCORE COMMUNICATIONS, INC. - MD
240-801-XXXXGaithersburg, MDCellphoneCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
240-802-XXXXWashington Zone 2, MDCellphone365 WIRELESS, LLC
240-803-XXXXCumberland, MDCellphoneNEW CINGULAR WIRELESS PCS, LLC - DC
240-804-XXXXTompkinsville, MDLandlineXO MARYLAND, LLC
240-805-XXXXGaithersburg, MDCellphoneCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
240-806-XXXXIndian Head, MDLandlinePEERLESS NETWORK OF MARYLAND, LLC
240-808-XXXXLeonardtown, MDCellphoneCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
240-810-XXXXWashington Zone 10, MDCellphoneOMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC
240-812-XXXXPoolesville, MDLandlineGLOBAL CROSSING LOCAL SERVICES, INC.-MD
240-813-XXXXGaithersburg, MDLandlineATX TELECOMMUNICATIONS SERVICES, LTD
240-815-XXXXFrederick, MDCellphoneCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
240-816-XXXXKeedysville, MDLandlineBANDWIDTH.COM CLEC, LLC - MD
240-817-XXXXAshton, MDCellphoneOMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC
240-818-XXXXMyersville, MDLandlineVERIZON MARYLAND, INC.
240-821-XXXXWashington Zone 3, MDLandlineLIGHTWAVE COMMUNICATIONS, LLC - MD
240-823-XXXXBrandywine, MDLandlineXO MARYLAND, LLC
240-825-XXXXWashington Zone 4, MDCellphoneCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
240-826-XXXXWashington Zone 10, MDLandlineVERIZON MARYLAND, INC.
240-828-XXXXWashington Zone 4, MDLandlineTELNYX LLC
240-830-XXXXWashington Zone 5, MDLandlineCOMCAST PHONE OF NORTHERN MARYLAND, INC. - MD
240-831-XXXXFrederick, MDLandlineNEUTRAL TANDEM-MARYLAND, LLC - MD
240-832-XXXXWashington Zone 2, MDCellphoneSPRINT SPECTRUM L.P.
240-833-XXXXWashington Zone 11, MDLandlineXO MARYLAND, LLC
240-837-XXXXHughesville, MDLandlineXO MARYLAND, LLC
240-838-XXXXWashington Zone 5, MDCellphoneOMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC
240-839-XXXXWashington Zone 3, MDCellphoneCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
240-841-XXXXLaurel (Baltimore LATA), MDLandlineALLEGIANCE TELECOM, INC. - MD
240-842-XXXXWashington Zone 14 (Baltimore LATA), MDLandlineALLEGIANCE TELECOM, INC. - MD
240-843-XXXXWashington Zone 13 (Baltimore LATA), MDLandlineALLEGIANCE TELECOM, INC. - MD
240-844-XXXXRidge, MDLandlineXO MARYLAND, LLC
240-845-XXXXWashington Zone 13, MDLandlineXO MARYLAND, LLC
240-846-XXXXWashington Zone 16, MDLandlineXO MARYLAND, LLC
240-847-XXXXWashington Zone 3, MDLandlineNEUTRAL TANDEM-MARYLAND, LLC - MD
240-848-XXXXGaithersburg, MDCellphoneSPRINT SPECTRUM L.P.
240-850-XXXXHagerstown, MDLandlinePEERLESS NETWORK OF MARYLAND, LLC
240-855-XXXXWashington Zone 2, MDCellphoneSPRINT SPECTRUM L.P.
240-856-XXXXLaurel (Baltimore LATA), MDCellphoneCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
240-857-XXXXWashington Zone 5, MDLandlineLEVEL 3 TELECOM OF MARYLAND, LLC - MD
240-858-XXXXWashington Zone 2, MDCellphoneCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
240-859-XXXXAshton (Baltimore LATA), MDLandlineBROADVOX-CLEC, LLC - MD
240-860-XXXXCumberland, MDLandlinePEERLESS NETWORK OF MARYLAND, LLC
240-862-XXXXMount Savage, MDLandlineNEUTRAL TANDEM-MARYLAND, LLC - MD
240-863-XXXXWashington Zone 3, MDLandlineLEVEL 3 TELECOM OF MARYLAND, LLC - MD
240-864-XXXXWashington Zone 10, MDLandlineCAVALIER EAST LLC - MD
240-865-XXXXWashington Zone 14 (Baltimore LATA), MDLandlineLEVEL 3 COMMUNICATIONS, LLC - MD
240-867-XXXXWashington Zone 3, MDLandlineCOMMIO, LLC
240-868-XXXXWashington Zone 12, MDLandlineCAVALIER EAST LLC - MD
240-870-XXXXMiddletown, MDLandlineNEUTRAL TANDEM-MARYLAND, LLC - MD
240-876-XXXXWashington Zone 2, MDCellphoneSPRINT SPECTRUM L.P.
240-877-XXXXFrederick, MDLandlineNEUTRAL TANDEM-MARYLAND, LLC - MD
240-878-XXXXHagerstown, MDLandlineCOMMIO, LLC
240-880-XXXXWashington Zone 11, MDLandlineBROADWING COMMUNICATIONS. LLC - MD
240-882-XXXXWashington Zone 5, MDCellphoneSPRINT SPECTRUM L.P.
240-883-XXXXAshton, MDLandlineBROADWING COMMUNICATIONS. LLC - MD
240-888-XXXXWashington Zone 10, MDCellphoneNEW CINGULAR WIRELESS PCS, LLC - DC
240-892-XXXXWashington Zone 15, MDLandlineBROADWING COMMUNICATIONS. LLC - MD
240-893-XXXXWashington Zone 3, MDCellphoneNEW CINGULAR WIRELESS PCS, LLC - DC
240-895-XXXXLexington Park-Great Mills, MDLandlineVERIZON MARYLAND, INC.
240-897-XXXXWashington Zone 16, MDLandlineBROADWING COMMUNICATIONS. LLC - MD
240-898-XXXXWashington Zone 4, MDLandlineBROADWING COMMUNICATIONS. LLC - MD
240-899-XXXXWashington Zone 2, MDCellphoneOMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC
240-900-XXXXWashington Zone 4, MDLandlineNEUTRAL TANDEM-MARYLAND, LLC - MD
240-901-XXXXLa Plata, MDLandlineCENTURYLINK COMMUNICATIONS LLC
240-903-XXXXIndian Head, MDLandlineCOMCAST PHONE OF NORTHERN MARYLAND, INC. - MD
240-904-XXXXLaurel (Baltimore LATA), MDCellphoneCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
240-906-XXXXWashington Zone 4, MDCellphoneOMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC
240-907-XXXXWashington Zone 10, MDCellphoneCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
240-908-XXXXWalkersville, MDLandlineNEUTRAL TANDEM-MARYLAND, LLC - MD
240-912-XXXXGaithersburg, MDLandlineUS LEC OF MARYLAND, INC.
240-913-XXXXDamascus (Hagerstown LATA), MDLandlineNEUTRAL TANDEM-MARYLAND, LLC - MD
240-915-XXXXNew Market, MDLandlineNEUTRAL TANDEM-MARYLAND, LLC - MD
240-917-XXXXLaurel, MDCellphoneNEW CINGULAR WIRELESS PCS, LLC - DC
240-918-XXXXAshton, MDCellphoneOMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC
240-920-XXXXCumberland, MDLandlineLEVEL 3 COMMUNICATIONS, LLC - MD
240-925-XXXXLeonardtown, MDCellphoneCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
240-929-XXXXWashington Zone 14, MDLandlineCAVALIER EAST LLC - MD
240-936-XXXXWashington Zone 4, MDLandlineVERIZON MARYLAND, INC.
240-938-XXXXAshton, MDCellphoneOMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC
240-949-XXXXWashington Zone 16, MDLandlineCAVALIER EAST LLC - MD
240-964-XXXXCumberland, MDLandlineVERIZON MARYLAND, INC.
240-965-XXXXWashington Zone 13, MDLandlinePAETEC COMMUNICATIONS, INC. - MD
240-970-XXXXWashington Zone 12, MDLandlineBROADVOX-CLEC, LLC - MD
240-971-XXXXFrederick, MDLandlineCENTURYLINK COMMUNICATIONS LLC
240-972-XXXXLaurel (Baltimore LATA), MDLandlineBALTIMORE-WASHINGTON TELEPHONE (BWT)
240-976-XXXXDamascus, MDLandlineBALTIMORE-WASHINGTON TELEPHONE (BWT)
240-979-XXXXCumberland, MDLandlineLEVEL 3 COMMUNICATIONS, LLC - MD
240-985-XXXXWilliamsport, MDLandlineCENTURYLINK COMMUNICATIONS LLC
240-986-XXXXNanjemoy, MDLandlineXO MARYLAND, LLC
240-988-XXXXWashington Zone 3, MDCellphoneSPRINT SPECTRUM L.P.
240-993-XXXXIndian Head, MDLandlineXO MARYLAND, LLC
240-994-XXXXWashington Zone 10, MDCellphoneCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
240-996-XXXXBrunswick, MDLandlineCENTURYLINK COMMUNICATIONS LLC
240-997-XXXXWashington Zone 3, MDCellphoneCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
240-998-XXXXHancock, MDLandlineCENTURYLINK COMMUNICATIONS LLC
240-999-XXXXWashington Zone 3, MDLandlineVERIZON MARYLAND, INC.