0300 456 xxxx

What Ofcom’s records say

Allocated to

TalkTalk Communications Limited

The provider Ofcom gave the block to

Ofcom status

Allocated

Allocated on

7 November 2013

Area

Not linked to a place

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 TalkTalk Communications Limited.

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.

• 0300 456 0300
  • Listed by Office of the Public Guardian: Office of the Public Guardian (lasting power of attorney)
  • Government organisation: Office of the Public Guardian
  • Contact listed on GOV.UK: Office of Public Guardian
  • Contact listed on GOV.UK: Office of the Public Guardian
  • Contact listed on GOV.UK: Office of the Public Guardian (OPG)
• 0300 456 1024
  • Contact listed on GOV.UK: Jury Central Summoning Bureau
• 0300 456 1155
  • Listed by British Red Cross: Donations and supporter care
• 0300 456 2051
  • Pharmacy: New Pharmacy
• 0300 456 4566
  • Contact listed on GOV.UK: The Motability Scheme
• 0300 456 4600
  • Contact listed on GOV.UK: Court of Protection
  • Contact listed on GOV.UK: General enquiries
  • Court: Court of Protection