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What is National Number Group mean?
The UK Public Switched Telephone Network is divided up by area into National Number Groups (NNG's), and then further divided up into dialling codes.
The structure of UK telephone numbers is a leading zero (replaced with +44 for international calls from outside the UK) followed by the NNG — a 2, 3, 4 or 5 digit dialling code (digits SA in the example below) to different geographic areas of the UK.
e.g.
Telephone number (020) 7811 8055 is part of the "London Area" and so has NNG 2078: reference| Full Form | Category |
|---|---|
| Nanning | Airport Code |
| National Number Group | Telecommunication |
Posted on 30 Apr 2022, this text provides information on Miscellaneous in Telecommunication related to Telecommunication. Please note that while accuracy is prioritized, the data presented might not be entirely correct or up-to-date. This information is offered for general knowledge and informational purposes only, and should not be considered as a substitute for professional advice.
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