Other numbers and codes

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Request a manufacturer code

Request a manufacturer code, which is used by the control procedures for Group 3 fax machines (non-standard facilities). The structure of the manufacturer code (or 'terminal provider code') is specified in ITU-T Recommendation T.35. 
Addressing resource,OFCOM,Communication parameters,Numbering,Telecom,Telephony
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Request an operator code 

Request an operator code to identify service providers and operators of national and international networks for telephony and data transmission in accordance with ITU-T Recommendation M.1400.
Addressing resource,OFCOM,Communication parameters,Numbering,Telecom,Telephony
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Search for more addressing resources

Search for more allocated or available addressing resources (e.g. ADMD, NSAP, manufacturer codes).
Addressing resource,OFCOM,Communication parameters,Numbering,Telecom,Telephony,IIN,ISPC,MNC,NSPC,OID,ADMD,Manufacturer code,ICD,NSAP,PRMD,RDN,T-MNC,Operator code,Tenth of DNIC