443 Carriers

Ymax Communications Corp Md Xspedius Management Co. Switch
Xo Maryland, Llc Winstar Communications, Llc -
Verizon Maryland, Inc. - Md Verizon Maryland, Inc.
Us Lec Of Maryland, Inc. Tidalwave Telephone Inc.
Teleport Communications Group Telcove Operations, Inc. - Md
Sprint Spectrum L.P. Sprint Spectrum L P
Southwestern Bell Mobile Syste Sbc Telecom, Inc. - Md
Paetec Communications, Inc. - Pac-West Telecomm, Inc. - Md
Omnipoint Communications Enter Omnipoint Communications Cap O
Nextel Communications, Inc. Nationsline, Inc.-Md
Metrocall Mci Worldcom Communications, I
Mci Metro Ats, Inc. - Md Lightwave Communications, Llc
Level 3 Communications, Llc - Kmc Telecom Iii, Inc. - Md
Global Naps, Inc. - Ny Global Naps South, Inc. - Md
Global Crossing Local Services Dobson Cellular Systems, Inc.
Ctc Communications Corp. - Md Core Communications, Inc. - Md
Comcast Phone Of Northern Mary Comcast Business Communication
Cellco Partnership Dba Verizon Cavalier Telephone, Llc (Mid-A
Cavalier Telephone Mid-Atlanti Cavalier East Llc - Md
Broadwing Communications, Llc Broadstreet Communications, In
Blue Licenses Holding, Llc Baltimore-Washington Telephone
Atx Telecommunications Service At&T - Local - Md
Arbros Communications Licensin Allegiance Telecom Of Maryland


443 Cities

WoodlawnWindsor Mill
WillardsWestminster
West RiverUnion Bridge
TrappeTowson
TaneytownSykesville
StevensvilleSparrows Point
Sparks GlencoeSolomons
Snow HillSherwood Forest
Severna ParkSevern
SalisburyRhodesdale
RestonReisterstown
RandallstownQueenstown
Princess AnnePrince Frederick
Port DepositPocomoke
PikesvillePerryville
PasadenaParkville
ParktonOdenton
Ocean CityNottingham
North EastNorth Beach
New WindsorNanticoke
MillersvilleMiddle River
Mardela SpringsLaurel
JessupJarrettsville
Havre De GraceHanover
HampsteadGlenwood
Glen BurnieFork
FederalsburgFallston
EssexEllicott City
ElktonElkridge
EdgewoodEaston
DundalkDenton
DelmarDarlington
CroftonCrisfield
ColumbiaCockeysville
ChurchvilleChestertown
Chesapeake CityCentreville
CatonsvilleCardiff
CambridgeBrooklyn
BishopvilleBerlin
Bel AirBaltimore
ArbutusAnnapolis
Aberdeen


443 Exchanges

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