- Prefix
0113 5- Area
- Leeds
- Number type
- Geographic landline (01/02)
- Format
0113 5XX XXXX- From abroad
+44 113 5XX XXXX- Ofcom blocks in range
- 100
- Blocks in service
- 38
- Range holders
- 23
What are 0113 5XX XXXX numbers?
Any UK number matching 0113 5XX XXXX sits in the
0113 dialling code for Leeds.
Ofcom hands these numbers to communications providers in blocks; this range
contains 100 blocks, of which
38 are allocated and usable. Calls from these
numbers are typically homes and businesses in the Leeds area — or
organisations elsewhere that keep a local 0113 presence using
VoIP.
Who holds 0113 5… number ranges?
| Range holder (allocated by Ofcom) | Number blocks | Example range |
|---|---|---|
| Gamma Telecom Holdings Limited | 7 | 0113 512 XXXX |
| Colt Technology Services | 6 | 0113 524 XXXX |
| BT | 5 | 0113 513 XXXX |
| 24 Seven Communications Limited | 1 | 0113 549 XXXX |
| Antheus Telecom Limited | 1 | 0113 533 XXXX |
| Belgacom International Carrier Services SA | 1 | 0113 538 XXXX |
| Callitech Limited | 1 | 0113 530 XXXX |
| EG TECHNOLOGIES LIMITED | 1 | 0113 544 XXXX |
| ICUK Computing Services Limited | 1 | 0113 545 XXXX |
| IP Voice Networks Ltd | 1 | 0113 534 XXXX |
| Infinity Tracking Ltd | 1 | 0113 537 XXXX |
| KCOM Group Ltd | 1 | 0113 542 XXXX |
…and 11 more providers hold smaller allocations in this range.
Ofcom’s data shows the provider each number range was originally allocated to — not who holds an individual number today. Numbers are frequently moved (ported) between providers, and no public database reveals the person or business behind a specific number, so treat any service that claims to with suspicion.
Not every block in this range is in service: of the 100 blocks Ofcom lists, 58 are protected (reserved by Ofcom and not in use) and 4 are free/unallocated. A call appearing to come from an unallocated block is a strong sign of a spoofed number.
Is a call from a 0113 5… number safe?
A local-looking number is never proof of who is calling: fraudsters spoof 0113 caller IDs so their calls look like they come from Leeds (‘neighbour spoofing’). If an unexpected caller asks for personal, banking or one-time-code details, hang up and ring the organisation back on a number you find independently. To put a name to a caller, see who called me?; to report one, see how to report a scam number.
Check a specific 0113 5XX XXXX number
Paste any full number into the checker above (or on the main phone number checker) to see its exact range holder and allocation status from this week’s Ofcom data.
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