Database Updated:
15th January 2025

Page Updated:
13th January 2023

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Other Magenta
Sites

CodeLook
lookup telephone
numbers, cost and
broadband availability

ComCap v5
data capture utility

DUN Manager
broadband and dial-up
networking enhancement

MailMaint
POP3 email

Delphi Developers

Links to Other
General Sites

Links to Other
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CodeLook has two main functions, looking up partial UK telephone numbers to find the locality and call costs, and looking up locality names and post codes to find the code.  For localities and post code, broadband ADSL and fibre availability information is provided. The CodeLook database is updated every one or two weeks.

The partial telephone number can be UK national, international. UK mobile, UK premium, a UK service or UK indirect code. It may be a combined indirect code and partial number. Numbers are entered as dialled from UK landline and mobile telephones.  

 Allocated in the Number Status column shows active numbers, Protected, Quarantined, Reseved and Free are numbers not currently in-use or never used, Ofcom use of status has varied over the years.  Note Ofcom data does not include all non-allocated numbers.  

Please note this site is intended to look up UK telephone numbers, it lists some international numbers but only with country names and those numbers necessary to identify more expensive international calls. No personal information is returned by CodeLook, it is not possible to find the user of a landline or mobile number without a legal court order.

When searching localities and area codes, postal county and island names may be entered.  Historic information is available for some numbers, also the Ofcom CUPID and other codes used by licensed operators.

To protect the web server, the number of lookups is limited each day to 20 lookups, unless you are a paid member and logged-on to this site. We are however offering free membership for non-commercial use by the various UK authorities that use CodeLook to trace telecom operators, please order free CodeLook Membership. A single logon can be shared by different shifts.  

This web site is duplicated on different servers for redundancy:

Please bookmark the alternate site in case the main site becomes unavailable.
If all pages fail, please email Magenta Systems.

Magenta Systems Ltd, 9 Vincent Road, Croydon CR0 6ED, United Kingdom
Phone 020 8656 3636, International Phone +44 20 8656 3636
https://www.magsys.co.uk/
Copyright © 2025 Magenta Systems Ltd, England. All Rights Reserved.