Number range
0300 322 xxxx
Ofcom’s records for the block of 10,000 numbers that start 0300322, and any numbers in it that we hold other information about.
What Ofcom’s records say
- Allocated to
- Gamma Telecom Holdings Limited
- The provider Ofcom gave the block to
- Ofcom status
- Allocated
- Allocated on
- 9 November 2022
- 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 Gamma Telecom Holdings 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 322 7012
- Government organisation: HM Revenue & Customs
- 0300 322 7064
- Government organisation: HM Revenue & Customs
- 0300 322 7065
- Government organisation: HM Revenue & Customs
- 0300 322 7073
- Contact listed on GOV.UK: DIY and House Building VAT Enquiries Team
- 0300 322 7074
- Government organisation: HM Revenue & Customs
- 0300 322 7093
- Listed by HMRC: Help to Save helpline
- Government organisation: HM Revenue & Customs
- 0300 322 7657
- Government organisation: HM Revenue & Customs
- 0300 322 7835
- Listed by HMRC: Payment helpline for missed Simple Assessment payments
- Government organisation: HM Revenue & Customs
- 0300 322 7877
- Government organisation: HM Revenue & Customs
- 0300 322 7900
- Government organisation: HM Revenue & Customs
- 0300 322 7919
- Government organisation: HM Revenue & Customs
- 0300 322 9129
- Listed by HMRC: Tax credits helpline
- Government organisation: HM Revenue & Customs
- 0300 322 9206
- Government organisation: HM Revenue & Customs
- 0300 322 9208
- Government organisation: HM Revenue & Customs
- 0300 322 9240
- Contact listed on GOV.UK: HMRC
- 0300 322 9279
- Government organisation: HM Revenue & Customs
- 0300 322 9422
- Government organisation: HM Revenue & Customs
- Contact listed on GOV.UK: Statutory Payment Disputes Team
- 0300 322 9424
- Government organisation: HM Revenue & Customs
- 0300 322 9433
- Government organisation: HM Revenue & Customs
- 0300 322 9434
- Listed by HMRC: Imports and exports (customs) helpline
- Government organisation: HM Revenue & Customs
- Contact listed on GOV.UK: Customs and International Trade Helpline
- Contact listed on GOV.UK: HMRC helpline
- 0300 322 9464
- Government organisation: HM Revenue & Customs
- 0300 322 9620
- Listed by HMRC: Bereavement helpline
- Government organisation: HM Revenue & Customs
- 0300 322 9640
- Listed by HMRC: Trusts helpline
- Government organisation: HM Revenue & Customs
Sources and checks
This page relies on:
Checked on 13 October 2026. Read how reports work. How we check our information. Spotted a mistake? Tell us and we will put it right.