301 Carriers

Ymax Communcations Corp. - Fl Xspedius Management Co. Switch
Winstar Communications Verizon Maryland, Inc. - Md
Verizon Maryland, Inc. Verizon West Virginia, Inc. -
Vdl, Inc. Dba Global Telecom B Uscoc Of Cumberland, Inc. Dba
Us Lec Of Virginia Llc - Dc Teleport Communications Group,
Starpower Communications, Llc Sprint Spectrum L.P. - Md
Sprint Spectrum L.P. Southwestern Bell Mobile Syste
Quantum Telecommunications, In Paetec Communications, Inc. -
Pac-West Telecomm, Inc. - Md Omnipoint Miami E License, Llc
Omnipoint Communications Cap O Nextel Communications, Inc.
New Frontiers Telecommunicatio Metrocall
Mci Worldcom Communications, I Mci Metro Ats, Inc. - Md
Mci Metro Ats, Inc. - Dc Level 3 Communications, Llc -
Kmc Telecom Iii, Inc. - Md Idt America, Corp. - Md
Idt America Geotek Communications, Inc.
Dobson Cellular Systems, Inc. Core Communications, Inc. - Md
Comcast Phone Of Northern Mary Comcast Phone Of Maryland, Inc
Cellco Partnership Dba Verizon Cavalier Telephone Mid-Atlanti
Broadwing Communications, Llc Blue Licenses Holding, Llc
Baltimore-Washington Telephone At&T - Local - Nh
At&T - Local - Md At&T - Local - Dc
Arch Wireless Holdings, Inc.


301 Cities

WilliamsportWesternport
WalkersvilleWaldorf
Valley LeeUpper Marlboro
ThurmontTemple Hills
Tall TimbersSwanton
SuitlandSmithsburg
Silver SpringSandy Spring
RockvilleRidge
PoolesvillePatuxent River
Oxon HillOldtown
OdentonOakland
North BeachNew Market
NanjemoyMyersville
Mount SavageMount Airy
MonroviaMiddletown
MechanicsvilleMccoole
LonaconingLexington Park
LeonardtownLaurel
LanhamLa Plata
KitzmillerKensington
KeedysvilleIssue
Indian HeadHyattsville
HughesvilleHollywood
HighfieldHancock
HagerstownGreenbelt
GrantsvilleGlenn Dale
Glen EchoGaithersburg
FrostburgFriendsville
FrederickFort Washington
EmmitsburgEdgewater
DamascusCumberland
ColumbiaCollege Park
ClintonClear Spring
Chevy ChaseCapitol Heights
Bryans RoadBrunswick
BrandywineBowie
BittingerBethesda
BeltsvilleBaltimore
AvenueAshton
Annapolis JunctionAnnapolis
AlexandriaAdamstown
Accident


301 Exchanges

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