443 Area Code has 731 prefixes

PrefixPrimary CityCarrier
443-200BaltimoreAllegiance Telecom, Inc. - Md
443-201ColumbiaNew Cingular Wireless Pcs, Llc - Dc
443-202Windsor MillCellco Partnership Dba Verizon Wireless - Md
443-203BaltimoreVerizon Maryland, Inc.
443-204ColumbiaNew Cingular Wireless Pcs, Llc - Dc
443-205SalisburySprint Spectrum L.p.
443-206Windsor MillCellco Partnership Dba Verizon Wireless - Md
443-207BaltimoreOmnipoint Communications Enterprises, L.p.
443-208ElkridgeSprint Spectrum L.p.
443-209Bel AirCavalier Telephone, Llc (mid-atlantic) - Md
443-210SalisburySprint Spectrum L.p.
443-212ColumbiaUs Lec Of Maryland, Inc.
443-213Owings MillsVerizon Maryland, Inc.
443-214ColumbiaNew Cingular Wireless Pcs, Llc - Dc
443-216HanoverCavalier Telephone Mid-atlantic, Llc - Md
443-217BaltimoreCore Communications, Inc. - Md
443-219BaltimoreLevel 3 Communications, Llc - Md
443-220ColumbiaVerizon Maryland, Inc.
443-221BaltimoreLevel 3 Communications, Llc - Md
443-222BaltimoreXo Maryland, Llc
443-223Windsor MillCellco Partnership Dba Verizon Wireless - Md
443-224ElkridgeMci Worldcom Communications, Inc. - Md
443-225SalisburySprint Spectrum L.p.
443-226ElkridgeSprint Spectrum L.p.
443-227BaltimoreCtc Communications Corp. - Md
443-228ColumbiaUs Lec Of Maryland, Inc.
443-229HanoverCavalier Telephone Mid-atlantic, Llc - Md
443-230BaltimoreCtc Communications Corp. - Md
443-231BaltimoreAt&t Local
443-232SalisburyCavalier Telephone, Llc (mid-atlantic) - Md
443-233SalisburyCavalier Telephone, Llc (mid-atlantic) - Md
443-234SalisburyCavalier Telephone, Llc (mid-atlantic) - Md
443-235SalisburyCellco Partnership Dba Verizon Wireless - Md
443-236BaltimoreCore Communications, Inc. - Md
443-238BaltimoreCtc Communications Corp. - Md
443-239SalisburyNew Cingular Wireless Pcs, Llc - Dc
443-240ColumbiaNew Cingular Wireless Pcs, Llc - Dc
443-241BaltimoreGlobal Naps South, Inc. - Md
443-242HanoverCavalier Telephone Mid-atlantic, Llc - Md
443-243Windsor MillCellco Partnership Dba Verizon Wireless - Md
443-244Windsor MillLevel 3 Communications, Llc - Md
443-245Bel AirCavalier Telephone, Llc (mid-atlantic) - Md
443-247BaltimoreCtc Communications Corp. - Md
443-248BaltimoreCellco Partnership Dba Verizon Wireless - Md
443-249StevensvilleVerizon Maryland, Inc.
443-250ElkridgeSprint Spectrum L.p.
443-251BaltimoreLocal Access Llc - Md
443-252Windsor MillCellco Partnership Dba Verizon Wireless - Md
443-253ColumbiaNew Cingular Wireless Pcs, Llc - Dc
443-254BaltimoreOmnipoint Communications Cap Operations, Llc
443-255ColumbiaNew Cingular Wireless Pcs, Llc - Dc
443-256BaltimoreCtc Communications Corp. - Md
443-257Windsor MillCellco Partnership Dba Verizon Wireless - Md
443-258SalisburyNew Cingular Wireless Pcs, Llc - Dc
443-259ColumbiaVerizon Maryland, Inc.
443-260DelmarVerizon Maryland, Inc.
443-261ElkridgeMci Worldcom Communications, Inc. - Md
443-262CentrevilleVerizon Maryland, Inc.
443-263BaltimoreVerizon Maryland, Inc.
443-265HanoverCavalier Telephone Mid-atlantic, Llc - Md
443-266BaltimoreGlobal Crossing Local Services, Inc.-md
443-267BaltimoreTeleport Communications America, Llc - Md
443-268BaltimoreCore Communications, Inc. - Md
443-269Windsor MillXo Maryland, Llc
443-270BaltimorePaetec Communications, Inc. - Md
443-271ElkridgeSprint Spectrum L.p.
443-272BaltimoreTeleport Communications America, Llc - Md
443-273ColumbiaTeleport Communications America, Llc - Md
443-274CroftonVerizon Maryland, Inc.
443-275BaltimoreComcast Phone Of Northern Maryland, Inc. - Md
443-276BaltimoreAllegiance Telecom, Inc. - Md
443-277ElkridgeSprint Spectrum L.p.
443-278ElkridgeVdl, Inc. Dba Global Telecom Brokers - Md
443-279BaltimoreAllegiance Telecom, Inc. - Md
443-280ColumbiaNew Cingular Wireless Pcs, Llc - Dc
443-281BaltimoreAllegiance Telecom, Inc. - Md
443-282SalisburySprint Spectrum L.p.
443-283BaltimorePaetec Communications, Inc. - Md
443-284BaltimoreXo Maryland, Llc
443-285ColumbiaVerizon Maryland, Inc.
443-286Windsor MillCellco Partnership Dba Verizon Wireless - Md
443-288BaltimoreAllegiance Telecom, Inc. - Md
443-289ElkridgeMci Worldcom Communications, Inc. - Md
443-290BaltimoreLevel 3 Telecom Of Maryland, Llc - Md
443-291BaltimoreGlobal Crossing Local Services, Inc.-md
443-292BaltimoreLevel 3 Communications, Llc - Md
443-293BaltimoreGlobal Crossing Local Services, Inc.-md
443-294BaltimoreGlobal Crossing Local Services, Inc.-md
443-295BaltimoreLevel 3 Communications, Llc - Md
443-296BaltimoreGlobal Crossing Local Services, Inc.-md
443-297BaltimoreTeleport Communications America, Llc - Md
443-298SalisburyNew Cingular Wireless Pcs, Llc - Dc
443-299BaltimoreGlobal Crossing Local Services, Inc.-md
443-300BaltimoreBroadwing Communications. Llc - Md
443-301ColumbiaNew Cingular Wireless Pcs, Llc - Dc
443-302BaltimoreGlobal Crossing Local Services, Inc.-md
443-303BaltimoreGlobal Crossing Local Services, Inc.-md
443-304BaltimoreGlobal Crossing Local Services, Inc.-md
443-305BaltimoreGlobal Crossing Local Services, Inc.-md
443-306ElkridgeSprint Spectrum L.p.
443-307BaltimoreGlobal Crossing Local Services, Inc.-md
443-308BaltimoreAllegiance Telecom, Inc. - Md
443-309BaltimoreSprint Spectrum L.p.
443-310ColumbiaNew Cingular Wireless Pcs, Llc - Dc
443-312BaltimoreGlobal Crossing Local Services, Inc.-md
443-313BaltimoreGlobal Crossing Local Services, Inc.-md
443-314ElkridgeSprint Spectrum L.p.
443-315ColumbiaGlobal Crossing Local Services, Inc.-md
443-316BaltimoreGlobal Crossing Local Services, Inc.-md
443-317BaltimoreGlobal Crossing Local Services, Inc.-md
443-318Bel AirCavalier Telephone, Llc (mid-atlantic) - Md
443-319Bel AirCavalier Telephone, Llc (mid-atlantic) - Md
443-320BaltimoreGlobal Crossing Local Services, Inc.-md
443-321BaltimorePaetec Communications, Inc. - Md
443-322HanoverCavalier Telephone Mid-atlantic, Llc - Md
443-323SalisburyCavalier Telephone, Llc (mid-atlantic) - Md
443-324ElkridgeSprint Spectrum L.p.
443-325HanoverCavalier Telephone Mid-atlantic, Llc - Md
443-326ColumbiaNew Cingular Wireless Pcs, Llc - Dc
443-327BaltimoreCavalier Telephone Mid-atlantic, Llc - Md
443-328BaltimoreCtc Communications Corp. - Md
443-329Global Crossing Local Services, Inc.-md
443-330HanoverCavalier Telephone Mid-atlantic, Llc - Md
443-331BaltimoreCtc Communications Corp. - Md
443-332HanoverCavalier Telephone Mid-atlantic, Llc - Md
443-333ColumbiaNew Cingular Wireless Pcs, Llc - Dc
443-334BaltimoreAllegiance Telecom, Inc. - Md
443-335BaltimoreXo Maryland, Llc
443-336ElkridgeSprint Spectrum L.p.
443-338BaltimoreCtc Communications Corp. - Md
443-339BaltimoreCtc Communications Corp. - Md
443-340Windsor MillCellco Partnership Dba Verizon Wireless - Md
443-341BaltimoreLevel 3 Communications, Llc - Md
443-342BaltimoreCtc Communications Corp. - Md
443-343BaltimoreTeleport Communications America, Llc - Md
443-345BaltimoreLevel 3 Communications, Llc - Md
443-348BaltimoreTeleport Communications America, Llc - Md
443-349BaltimoreCore Communications, Inc. - Md
443-350North EastCellco Partnership Dba Verizon Wireless - Md
443-352BaltimoreAt&t Local
443-353CockeysvilleVerizon Maryland, Inc.
443-354BaltimoreLevel 3 Communications, Llc - Md
443-355BaltimoreLevel 3 Communications, Llc - Md
443-356ColumbiaLevel 3 Communications, Llc - Md
443-357PikesvilleVerizon Maryland, Inc.
443-358SalisburyYmax Communications Corp. - Md
443-359SalisburyCellco Partnership Dba Verizon Wireless - Md
443-360BaltimoreTeleport Communications America, Llc - Md
443-362SalisburyOmnipoint Communications Cap Operations, Llc
443-363BaltimoreXo Maryland, Llc
443-364BaltimoreTeleport Communications America, Llc - Md
443-365SalisburyOmnipoint Communications Cap Operations, Llc
443-366SalisburySprint Spectrum L.p.
443-367ColumbiaVerizon Maryland, Inc.
443-370ColumbiaNew Cingular Wireless Pcs, Llc - Dc
443-371BaltimoreBroadwing Communications. Llc - Md
443-372ColumbiaUs Lec Of Maryland, Inc.
443-373SalisburySprint Spectrum L.p.
443-374Bel AirCavalier Telephone, Llc (mid-atlantic) - Md
443-375ElkridgeSprint Spectrum L.p.
443-376BaltimoreTeleport Communications America, Llc - Md
443-377Windsor MillCellco Partnership Dba Verizon Wireless - Md
443-378ElkridgeSprint Spectrum L.p.
443-379ColumbiaComcast Phone Of Northern Maryland, Inc. - Md
443-380Gwynn OakLevel 3 Communications, Llc - Md
443-381BaltimoreXo Maryland, Llc
443-382DelmarCore Communications, Inc. - Md
443-383BaltimoreCtc Communications Corp. - Md
443-384HanoverCavalier Telephone Mid-atlantic, Llc - Md
443-385DelmarCore Communications, Inc. - Md
443-386Windsor MillCellco Partnership Dba Verizon Wireless - Md
443-387DelmarCore Communications, Inc. - Md
443-388Windsor MillCellco Partnership Dba Verizon Wireless - Md
443-389DelmarCore Communications, Inc. - Md
443-391BaltimoreGlobal Crossing Local Services, Inc.-md
443-392ElkridgeAt&t Local
443-393BaltimoreGlobal Crossing Local Services, Inc.-md
443-394Owings MillsVerizon Maryland, Inc.
443-396BaltimoreGlobal Crossing Local Services, Inc.-md
443-397SalisburyCellco Partnership Dba Verizon Wireless - Md
443-398ElkridgeSprint Spectrum L.p.
443-399BaltimoreGlobal Crossing Local Services, Inc.-md
443-400BaltimoreXo Maryland, Llc
443-401Windsor MillCellco Partnership Dba Verizon Wireless - Md
443-402BaltimoreTeleport Communications America, Llc - Md
443-403BaltimoreBroadwing Communications. Llc - Md
443-404ElkridgeSprint Spectrum L.p.
443-405BaltimoreGlobal Crossing Local Services, Inc.-md
443-406BaltimoreTeleport Communications America, Llc - Md
443-407BaltimoreAllegiance Telecom, Inc. - Md
443-408BaltimoreXo Maryland, Llc
443-409BaltimoreCavalier Telephone Mid-atlantic, Llc - Md
443-410BaltimoreCenturylink Communications Llc
443-412BaltimoreTeleport Communications America, Llc - Md
443-413ElkridgeSprint Spectrum L.p.
443-414ElkridgeSprint Spectrum L.p.
443-415ElkridgeSprint Spectrum L.p.
443-416ElkridgeSprint Spectrum L.p.
443-417Windsor MillTeleport Communications America, Llc - Md
443-418ElkridgeSprint Spectrum L.p.