Ofcom numbering snapshot published 23 Sep 2026
Check a UK phone number privately
Did not expect the call? Do not call back; contact the organisation on a number you find yourself.
Local lookup
Enter the number that called
Your full number does not leave this page. A lookup downloads only the relevant four-digit prefix-class file.
Rangecheck reads Ofcom’s numbering register: 343,860 number blocks, 599 active area codes and 404 range holders in the snapshot published 23 Sep 2026. Enter a number to see its block status privately in your browser.
What the register holds
| What | Count |
|---|---|
| Number blocks | 343,860 |
| Active area codes | 599 |
| Area codes with no allocated blocks | 146 |
| Range holders with allocated blocks | 404 |
Report an error
Source detail
| Fact | Value | Claim identifier |
|---|---|---|
| Range records | 343860 | hub:home:range_records:6d60d6b0:v1 |
| Snapshot published | 23 Sept 2026 | hub:home:snapshot_date:6d60d6b0:v1 |
| Number processing | In this browser | hub:home:processing:6d60d6b0:v1 |
| Checker dataset version | 1d1b63f1ecdc2123 | hub:home:dataset_version:6d60d6b0:v1 |