80 ausgewählt
- Nicht ausgefüllt
- D 2 Privat Mannesmann
- D&N Telecom
- D.C.C.L.
- D.I.T.
- D1
- D1 Telekom
- D1 Telekom ( Hutchison )
- D1 Victorvox
- D2
- D2 Mannesmann Victorvox
- D2 Mannesmann/Vodafone
- D2 Privat
- Dacom
- Daily Card
- Danmønt
- Daruma
- Data Communications LTD.
- Datawave
- Dauphin Telecom
- Davidoff
- DDI
- De Concurrent
- De danske
- Debit
- Debitel
- Decatel
- Dekatel
- Delight Mobile
- Delta
- Delta Multimedia
- Deltacom Industries Ltd
- Delto
- DenDenKoSha
- Destia
- Deutsche Bundespost
- Deutsche Netzwerk Telefonie GmbH (Dentel)
- Deutsche Telekom
- Devil
- Dhiraagu
- Dia-Tel
- Dial Asia
- Dial International
- Dial4Cheap
- Diamond Communications
- Die Post
- Dienst Justitiële Inrichtingen
- Dienst Stadstoezicht Amsterdam
- Digi
- Digicel
- Digit
- Digitec
- Digitec 2000
- Digitel
- Dilman
- Dime Communications, Inc.
- Dinersclub international
- Direct Technologies Inc.
- Discount
- Disney Lucasfilm, Ltd.
- Distinct
- DizzoCom
- Djezzy
- Djibouti Telecom SA
- Dome Telecom
- Domodedovo
- Donpi
- Dr. Nassau college
- Dragon
- Dragon Mobile
- Dresdner Bank
- DSA
- DTAC
- DTSS
- DTT
- Dumon
- Duocom
- Dutchtone
- Dvigrad
- Dynamic Entertainment, Inc.
- Dynamic TeleCard