Telephone Companies in Washington, DC

28 businesses found

C & P Telephone-A Bell Atlntc

, 20001
Phone: (202) 346-6200

US Teleservices Inc

, 20007
Phone: (202) 295-9091

Interactive Telecom Group

1081 Wisconsin Avenue Nw , 20007
Phone: (202) 625-1625

Vtv

4850 Connecticut Avenue Nw , 20008
Phone: (202) 506-7880

Calvert Group

, 20018
Phone: (202) 529-7526

Bray Telephone CO

200 Attestation Boulevard , 20024
Phone: (202) 479-9178

Nationsline Business Service

, 20024
Phone: (202) 367-9000

Concert Technologies

500 C St Sw , 20024
Phone: (202) 554-7473

At&T

2055 L St Nw , 20036
Phone: (202) 659-7668

At&T

1120 20th St Nw , 20036
Phone: (202) 296-8050

Mci International

2030 M St Nw # 200 , 20036
Phone: (202) 822-8705

France Telecom LLC

2025 M Street NW # 650 , 20036
Phone: (202) 822-2100

Onevoice Communications

1130 Connecticut Avenue Nw , 20036
Phone: (202) 785-6730

Neustar

1775 Pennsylvania Avenue Nw # 400 , 20006
Phone: (202) 872-7850

Ntt Corp

900 17th St Nw , 20006
Phone: (202) 785-0134

At&T

1635 Benning Road Ne , 20002
Phone: (202) 397-2263

Chesapeake & Potomac Telephone

7th St & Florida Avenue Ne , 20002
Phone: (202) 544-8766

System Applications

810 Potomac Avenue Se , 20003
Phone: (202) 548-0311

General Communications

1350 I St Nw , 20005
Phone: (202) 457-8814

Global Telecom Corp

1220 L St Nw # 206 , 20005
Phone: (202) 289-0863