410 Carriers

Xspedius Management Co. Switch Xo Maryland, Llc
Winstar Communications, Llc - Weblink Wireless, Inc.
Weblink Wireless Verizon Maryland, Inc. - Md
Verizon Maryland, Inc. Us Lec Of Maryland, Inc.
Teleport Communications Group Sprint Spectrum L.P.
Sprint Communications Company, Southwestern Bell Mobile Syste
Redi-Call Communications Co Paetec Communications, Inc. -
Pac-West Telecomm, Inc. - Md Omnipoint Communications Cap O
Nextel Communications, Inc. Metrocall
Mci Worldcom Communications, I Mci Metro Ats, Inc. - Md
Level 3 Communications, Llc - Idt America, Corp. - Md
Geotek Communications, Inc. Comcast Phone Of Northern Mary
Cellco Partnership Dba Verizon Cavalier Telephone, Llc (Mid-A
Cavalier Telephone Mid-Atlanti Broadwing Communications, Llc
Blue Licenses Holding, Llc Baltimore-Washington Telephone
Atx Telecommunications Service Armstrong Tel Co Of Maryland
Arch Wireless Holdings, Inc. Aquis Communications, Inc.


410 Cities

Wye MillsWoodlawn
WillardsWhite Marsh
WestminsterWest River
WashingtonWarwick
Union BridgeTrappe
TowsonTilghman
TaneytownSykesville
Still PondStevensville
Sparrows PointSparks Glencoe
SolomonsSnow Hill
Sherwood ForestSeverna Park
SevernSalisbury
Saint MichaelsRock Hall
Rising SunRidgely
RhodesdaleReisterstown
RandallstownQueenstown
Queen AnnePrincess Anne
Prince FrederickPreston
Port RepublicPort Deposit
PocomokePikesville
PerryvillePasadena
ParkvilleParkton
OxfordOdenton
Ocean CityNorth East
North BeachNew Windsor
NanticokeMillington
MillersvilleMarion
Mardela SpringsLinthicum Heights
LaurelJessup
JarrettsvilleHurlock
Havre De GraceHanover
HampsteadGreensboro
GlenwoodGlen Burnie
GalenaFork
FederalsburgFallston
EwellEssex
Ellicott CityElkton
ElkridgeEdgewood
EdgewaterEaston
DundalkDenton
DelmarDeal Island
DarlingtonCrofton
CrisfieldCrapo
ColumbiaCockeysville
ChurchvilleChurch Hill
ChestertownChesapeake City
CentrevilleCatonsville
CardiffCambridge
BrooklynBishopville
BerlinBeltsville
Bel AirBarclay
BaltimoreArnold
ArbutusAnnapolis
AbingdonAberdeen


410 Exchanges

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