Download numbering data
Published: 13 March 2024
Last updated: 22 July 2026
Data on which UK telephone numbers are available for allocation or are allocated, and lists of codes for use in number porting and other administrative tasks.
Guidance on the provision of Calling Line Identification facilities and other related services
Published: 26 April 2018
Last updated: 15 July 2026
Guidelines for the provision of Calling Line Identification Facilities and other related services over Electronic Communications Networks Version 2
General demand for information
Published: 3 February 2025
Last updated: 10 April 2026
This webpage contains Ofcom’s publication of our general demand for financial information relating to PRS revenues under article 55 of the Regulation of Premium Rate Services Order 2024, S.I. 2024/1046 (PRS Order) for the purposes of calculating Ofcom’s related administrative charges.
Telecoms numbering
Published: 28 April 2010
Last updated: 3 February 2026
This section provides information about UK telephone numbers, and allows communications providers to apply for telephone numbers from the National Numbering Plan.
Quick guide to premium rate services (PRS)
Published: 31 January 2025
Last updated: 23 June 2025
Premium rate service is the name given to all content, goods, or services charged to a phone bill. Phone payment is a popular and easy way of paying for a range of services, such as music subscriptions, games, donations to charity and voting on TV talent shows.
Top tips to stay in control of your phone charges
Published: 31 January 2025
Last updated: 23 June 2025
This page provides information on how you can stay up to date and in control of your phone bill charges aswell as what to avoid.
Stopping premium rate charges
Published: 31 January 2025
Last updated: 23 June 2025
If you have an unexpected charge on your phone bill and want to find out what it is for, you’ll need to contact the service provider first.
Premium rate service checker
Published: 4 June 2025
Unexpected charge on your phone bill? Use our service checker to find out who to contact about it.
Ofcom takes on responsibility for regulating premium-rate services
Published: 31 January 2025
Ofcom has formally adopted responsibility for regulating premium-rate services (PRS), which were previously regulated by the Phone-Paid Services Authority (PSA).
Call costs guide
Published: 14 February 2023
Last updated: 31 January 2025
If you’re confused by call charges or don’t know your 0300 from your 0845 and 0844 numbers, then we have the perfect guide for you.