60 ausgewählt
- Nicht ausgefüllt
- N-Tel
- N-Wave Telecoms
- N.C.S.
- N9uf telecom
- Na *777
- NasionCom
- Nationaal Chipcard Platform
- National Module Systems S.A.
- National Networks
- Nativa
- Nawras
- NBT TCO Toque Cartäo
- NCC
- NCT
- Nederlandse banken
- NeoPhone
- Nepal Telecommuniations Corporation
- Net 263
- Net Tel
- Net-Up
- Net2Phone
- Netnet
- Netsource
- Nettel
- Network Srvices
- Networks Around the World
- Neuf Télécom
- New Call
- New Media Telecommunications.inc
- New World Cards
- New World Telephone
- New York Telephone
- Nex Telecom
- Nexia
- Next 3
- Nextel
- Niagara Waterfals Communications
- Niagra Falls
- Nigerian Telecommunications Limited
- Nile Telecom
- Nippon Telegraph and Telephone Corporation
- No Problem
- Non Stop
- Nondas
- Norfolk Telecom
- Nortel
- North American Telephone - PTA
- Novacard
- Novis
- Novobirsk
- Nowtel Global
- NST
- NTE
- NTI
- NTT
- Nufon
- Number One
- NuStar Communications
- NYNEX
- N° 2