020 7276 xxxx

What Ofcom’s records say

Allocated to

BT

The provider Ofcom gave the block to

Ofcom status

Allocated

Allocated on

26 May 1999

Area

London

Area code 020

Numbers in block

10,000 numbers

Number length

11 digits

Source: Ofcom numbering data, files published 7 October 2026, checked 13 October 2026

Ofcom has allocated this block of numbers to BT.

Ofcom allocates phone numbers to communications providers in blocks. The provider shown is the one Ofcom allocated this block to. It is not the person or business that called you, and the number may since have moved to a different network, because people can usually keep their number when they switch provider. Ofcom does not hold information about individual numbers.

Numbers in this range we know about

Numbers an organisation lists on its own website or in an official register, and numbers at least 3 visitors have reported.

• 020 7276 0074
  • Government organisation: Security Vetting Appeals Panel
• 020 7276 0102
  • Government organisation: Civil Service
• 020 7276 0415
  • Government organisation: Office of the Leader of the House of Lords
• 020 7276 1234
  • Government organisation: Cabinet Office
  • Government organisation: Civil Service
  • Government organisation: Government Commercial Function
  • Government organisation: UK Integrated Security Fund
• 020 7276 2295
  • Government organisation: Government Communication Service
• 020 7276 2777
  • Contact listed on GOV.UK: Honours and Memorialisation Secretariats
• 020 7276 6586
  • Government organisation: Office of the Parliamentary Counsel
• 020 7276 8448
  • Contact listed on GOV.UK: Food Standards Agency - England only
• 020 7276 8787
  • Contact listed on GOV.UK: The National Food Crime Unit
• 020 7276 8888
  • Government organisation: Food Standards Agency