Closed Us­er Group Interlock Codes (CUG­ICs)

These codes are used to form closed user groups, and are transmitted using the ITU's Signalling System No 7 (SS No 7).

The Allocation Rules were published in the Reg TP's Official Gazette 4/1998 (Administrative Order 16/1998).

NB:
With effect from 25.11.2010 applications should be sent to the following address even if the application form still specifies a different address.

Applications should be sent to 

Bundesnetzagentur
Referat 118 Nummernverwaltung
Canisiusstraße 21
55122 Mainz

or

Bundesnetzagentur
Referat 118 Nummernverwaltung
Postfach 8001
55003 Mainz.

Provisional Rules for the allocation of closed user groups interlock codes (pdf / 18 KB)