Download numbering data

This page is for communications providers (CPs) to download our data files. We publish data on which UK telephone numbers are available for allocation or are allocated, and aim to update these files every Wednesday.

We also publish lists of codes for use by CPs in number porting and other administrative tasks.

Telephone numbers

Number begins with		Excel download (.xlsx format)	CSV download
01 or 02	Geographic numbers Because of its size, this file has been divided into nine parts for easier use.	SABCDE11 = S1 Geographic Codes Starting 11 or 12 SABCDE13 = S1 Geographic Codes Starting 13 SABCDE14 = S1 Geographic Codes Starting 14 SABCDE15= S1 Geographic Codes Starting 15 SABCDE16= S1 Geographic Codes Starting 16 SABCDE17= S1 Geographic Codes Starting 17 SABCDE18= S1 Geographic Codes Starting 18 SABCDE19= S1 Geographic Codes Starting 19 SABCDE2= S1 Geographic Codes Starting 2	S1.csv
03	Non-Geographic Numbers: calls charged at a geographic rate	S3.xlsx	S3.csv
055 or 056	Corporate Numbers and Location Independent Electronic Communications Systems numbers	S5.xlsx	S5.csv
07	Personal Numbers, Radiopaging Service & Mobile Service numbers	S7.xlsx	S7.csv
08	Non-Geographic Numbers	S8.xlsx	S8.csv
090, 091 or 098	Non-Geographic Numbers	S9.xlsx	S9.csv

Download all telephone number CSV files in ZIP format.

Notes on numbering downloads

05 numbers

Corporate numbers - 055 Numbers
Location Independent Electronic Communications Services - 056 Numbers

07 numbers

Personal Numbers (070 numbers)
Radiopaging Service numbers (076 numbers)
Mobile Services numbers (071 to 075 and 077 to 079)

08 numbers

Freephone (080 numbers)
Non-Geographic Numbers (0843, 0844 and 0845)
Non-Geographic Numbers (0870, 0871, 0872 and 0873)

09 numbers

Non-Geographic Numbers (090 & 091)
Non-Geographic Numbers for Sexual Entertainment Services (098 & closed scheme numbers 0908 & 0909)

Access codes

Type A (codes used to provide access to specified services without allocation, e.g. 100 operator assistance, 123 speaking clock)
Type B (usually for 118XXX Directory Enquiry (DQ) services, 116XXX harmonised numbers for harmonised services of social value numbers or
Indirect Access services)
Type C (usually operator-specific services)

Number block allocations

To help CPs keep track, we publish lists of number allocations made over a rolling 12-month period. Please note that transferred numbers will also be shown as “allocated”. CPs are responsible for keeping their own records up to date.

Type of number transferred	Excel download	CSV download
Telephone numbers beginning 01-09	tran0109.xlsx	tran0109.csv
Codes for indirect access, and directory enquiries (“DQ”)	tranacce.xlsx	tranacce.csv

Codes

Code type	Excel download	CSV download
Number Portability Prefix Code (NPPC) Prefixes to use when porting numbers other than Mobile Services numbers	NPPC.xlsx	NPPC.csv
Mobile portability code (MPC) Prefixes to use when porting Mobile Services numbers	MPC.xlsx	MPC.csv
Communications Provider Identity Code (CUPID) 3-digit administrative codes used to identify CPs	CUPID.xlsx	CUPID.csv
Carrier Pre-Selection (CPS) 4-digit codes for Carrier Pre-Selection services	CPS.xlsx	CPS.csv
Reseller Identification (RID) 3-letter administrative codes used to identify resellers of fixed line and broadband services	RID.xlsx	RID.csv
Mobile Network Codes (MNC) Part of the International Mobile Station Identity ("IMSI") code	MNC.xlsx	MNC.csv
Partial Calling Line Identity Code (PCLI) 6-digit codes used to identify a CP and its switch number	PCLI.xlsx	PCLI.csv

Notes on code allocations

NPPCs are prefix codes which identify the recipient Communications Provider when numbers are ported; we issue these to CPs on request. For geographic numbers, these are allocated in batches of 100. If you don't have an interconnection agreement with the recipient CP, you will also need a portability transit code to transfer the number via a mutual third party.
CUPIDs are standard ID numbers for the telecoms industry, and may be necessary when applying for services such as Number Portability arrangements, Data Management Amendments (DMA), orders on phone book entries, etc.
Carrier Pre-Selection (CPS) is a service which lets customers automatically route their calls through an alternative provider, usually the cheapest for that destination or call type, without having to dial a prefix. We normally issue one code (four digits in the format 8XXX) to each CPS provider, but in some circumstances we can provide a second code on request, which we will assess on a case-by-case basis. The provider may need to deal with additional issues arising from their use of a second code.
Reseller Identification codes (RIDs) are used by the telecoms industry for administrative purposes. They are three character alphabetic codes which are used in the Notification of Transfer (NoT) switching process.
MNCs are part of the International Mobile Station Identity ("IMSI") code that identifies the subscriber’s host network. The MNC together with the Mobile Country Code ("MCC") uniquely identifies the home network of the mobile terminal or mobile user.
PCLI Codes are used in connection with the identification of a CP and its switch number, e.g. for malicious call identification. PCLI Codes are used generally in public telephone networks and generated either where analogue systems are connected to a digital network, or on international gateways where a switch receives ingress traffic only, or other situations where a full Calling Line Identity cannot be provided.