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.
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.
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.
Download in MS Excel format:
(Geographic Area Codes beginning 01 and 02)
(numbers beginning 03)
(NB. 9-digit numbers starting with 0500, and other 05 number ranges may be shown in this table, but are not available for Allocation)
(numbers beginning 07)
(numbers beginning 08)
(numbers beginning 090, 091 & 098)
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.
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.
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, 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.
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.
They are available either as a single download in a Zip archive or separately in either text or pdf format.
Please refer to the UK Export Specification when downloading the documents.
Download all files
NB: The file is in Zip format and may require up-to-date third-party software to open:
Download files individuallyTo download files to your computer, right-click (PC) or command-click (Mac) and choose 'Save target/link as...'Read Me
Last Updated: 13/11/06
The fields contained within each file are as follows:
The order of the fields within each file will be maintained. Any changes will be indicated in the 'Change Record', below.
In addition a readme.txt file is included. This is a plain text file that contains further information regarding UK Telephone Numbers, including a definition of the contents of each field. It is also used to notify changes that have been made to the codelist.zip files.