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Independent regulator and competition authority
for the UK communications industries.

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Ofcom Numbering Site

Details on allocations and availability of UK Telephone Numbers may be accessed below.

(This information is updated weekly where possible).NB. In the bulleted links below, information is available in Excel 97 files and pdf.

  1. Geographic Numbers
  2. UK Wide Numbers
  3. Corporate Numbers and Location Independent Electronic Communications Systems (numbers beginning 055 and 056)
  4. Personal Numbering, Radiopaging & Mobile numbers
  5. Special Services (numbers beginning 08)
  6. Premium Rate Services (numbers beginning 09)
  7. Access Codes

The information on the Telephone Numbers above is also available in Comma-Separated-Variable (CSV) format for downloading. To download (your attention is drawn to the Specification on the linked page which lists changes to fields in the files) click here.

  1. Number Portability Prefix Codes ("NPPC") Carrier Pre Selection ("CPS") Codes Communications Provider Identity ("CUPID") codes Reseller Identity ("RID") codes
  2. Carrier Pre-Selection ("CPS") Codes
  3. Communications Provider Identity ("CUPID") Codes
  4. Reseller Identity ("RID") Codes
  5. Mobile Network Codes ("MNC")
  6. Service Charge Master Sheet

NB. Details of Targetted Transit Codes ("TTC"), National and International Signalling Point Codes ("NSPC") and ("ISPC") respectively, are not shown because of potential security issues. However, details of your own codes may be obtained by contacting Ofcom's Numbering Unit.

Geographic Numbers

Download in MS Excel format:

(Geographic Area Codes beginning 01 and 02)
NB. Due to the size of the file containing all Geographic Numbers, it has been divided into 8 parts for ease of use as follows:

UK Wide numbers

(numbers beginning 03)

05 Numbers

(NB. 9-digit numbers starting with 0500, and other 05 number ranges may be shown in this table, but are not available for Allocation)

Personal Numbering, Radiopaging & Mobile Service numbers

(numbers beginning 07)

  • Personal Numbering (070 numbers)Radiopaging numbers (076 numbers)
  • Mobile numbers (075/7/8/9)

Special Services - issued in blocks of 1k & 10k numbers

(numbers beginning 08)

  • Freephone (0808 1X and 0808 2X ranges, & details on allocated 0800 10k ranges)
  • BT’s Standard Local Call Retail Price for BT customers (0845 XXX ranges)
  • BT’s Standard National Call Retail Price for BT customers (0870 XXX ranges)
  • Up to 5p - non internet (ranges 0844 2XX to 0844 9XX)
  • Up to 10p - non-internet (ranges 0871 2XX to 0871 9XX)
  • Internet for Schools (0820 XXX ranges)

Premium Rate Service numbers

(numbers beginning 090, 091 & 098)

  • Premium Rate Services (090 & 091)
  • Sexual Entertainment (098 & closed scheme numbers 0908 & 0909)

Access Codes

Number Portability Prefix Codes ("NPPC")

NPPCs may be Allocated in response to requests from Communications Providers with Allocations of Telephone Numbers identified in the Number Portability Functional Specification as ranges for which portability should be provided. NPPCs are Allocated as single prefixes that identify the recipient Communications Provider, except for Geographic NPPCs which are Allocated in blocks of 100 in order to identify a recipient and the relevant switch in the relevant provider's Network.Where a Communications Provider does not have an Interconnection agreement with a particular Communications Provider, a portability transit code will be required to allow porting to take place through a third party with whom both Providers have an Interconnect agreement.

Communications Provider Identity ("CUPID") codes

CUPIDs replace LOPIDs which are recognised by the telecoms industry and may be a prerequisite on specific forms used by the industry for services such as Number Portability arrangements, Data Management Amendments (DMA), orders on phone book entries, etc. Click here.

Carrier Pre Selection ("CPS") codes

CPS codes are four digit codes commencing with the digit 8 (e.g. 8XXX). The CPS codes will be Allocated by Oftel to Communications Providers solely in connection with Carrier Pre-Selection, a service that allows customers the choice of routing specific types of calls via a selected United Kingdom Communications Provider without the need to dial a prefix before making a call.If a Communications Provider requests a second 8XXX CPS code, Oftel will Allocate an additional code provided a satisfactory justification of the need for a second code is given to Oftel. Oftel will consider such requests on a case-by-case basis. Communications Providers will not normally be Allocated more than two 8XXX codes for number conservation reasons. A Communications Provider wishing to implement a second 8XXX code on an access Communications Providers' network may need to address consequential issues arising with the access Communications Provider concerned.

Reseller Identity ("RID") codes

Reseller Identity (RID) Codes, which are also known as retailer identity codes, are three character alphabetic codes that are used to identify the reseller when a reseller wishes to offer carrier pre-selection ("CPS") via a wholesale carrier (also known as a 'CPS operator'). RIDs are also used in the provision of wholesale line rental (WLR) when a WLR service provider wishes to transfer a particular line to WLR and retain the existing CPS arrangements on that line. Ofcom will issue a RID to any reseller requesting one by means of a RID application form.

Mobile Network Codes ("MNC")

MNCs are part of the International Mobile Station Identity ("IMSI") code that identify the subscribers host network. The MNC together with the Mobile Country Code ("MCC") uniquely identifies the home network of the mobile terminal or mobile user.

Service Charge Master Sheet ("SCMS")

In order to implement the unbundled tariff, CPs must set Service Charges against each revenue share non–geographic number block allocated to them.  The SCMS sets out the Service Charges which range holders have proposed to apply to those number blocks allocated to them once the unbundled tariff goes-live in summer 2015.  More information about the unbundled tariff can be found on the UK Calling website http://www.ukcalling.info/

Data Download

They are available either as a single download in a Zip archive or separately in either text or pdf format.


Download all files

NB: The file is in Zip format and may require up-to-date third-party software to open: