Independent regulator and competition authorityfor the UK communications industries.
Publication date: 27 March 2013
Information on 116 numbers, including register of numbers available in the UK and details of the comparative selection process
Published 13|12|13, updated 11|12|14
Step by step guide on how to apply for your RID code
For example 0800 Freephone range.
Guidance on acceptable use of 070 Telephone Numbers. Revised 24 January 2004
Number portability is a facility which enables customers to change their service provider whilst retaining their existing telephone number.
Telephone Numbers for use in TV and Radio drama programmes
Users Guide to Numbering is currently being updated and will be available shortly.
Numbering Forum, Working Groups and Workshops
No longer published. Link to old Oftel Bulletins.
ITU-T webpage showing list of Country Codes.
London is going to get some extra telephone numbers, starting with (020) 3. These will be used alongside the existing (020) 7 and (020) 8 numbers. They will be given out to some residential and business customers who put in a new line or apply for a new telephone number from the autumn of 2005 onwards