Number range
01373 09xxxx
Ofcom’s records for the block of 10,000 numbers that start 0137309, and any numbers in it that we hold other information about.
What Ofcom’s records say
- Allocated to
- No provider
- Ofcom status
- Not allocated (protected)
- Allocated on
- No date
- 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 not allocated this block to any provider. Ofcom protects blocks that have never been made available, that have been withdrawn and are in quarantine, or that are kept for a specific purpose such as TV and radio drama.
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
No organisation lists a number in this range, and no number in it has been reported by enough visitors to show a summary. That tells you nothing either way about a call: most numbers in any range are private lines.
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.