- Prefix
01943 5- Area
- Guiseley
- Number type
- Geographic landline (01/02)
- Format
01943 5XXXXX- From abroad
+44 1943 5XXXXX- Ofcom blocks in range
- 37
- Blocks in service
- 22
- Range holders
- 22
What are 01943 5XXXXX numbers?
Any UK number matching 01943 5XXXXX sits in the
01943 dialling code for Guiseley.
Ofcom hands these numbers to communications providers in blocks; this range
contains 37 blocks, of which
22 are allocated and usable. Calls from these
numbers are typically homes and businesses in the Guiseley area — or
organisations elsewhere that keep a local 01943 presence using
VoIP.
Who holds 01943 5… number ranges?
| Range holder (allocated by Ofcom) | Number blocks | Example range |
|---|---|---|
| Andrews & Arnold (Numbers) Ltd | 1 | 01943 505XXX |
| Atomstream Limited | 1 | 01943 580XXX |
| Bicom Systems EURL | 1 | 01943 599XXX |
| CFL Communications Ltd | 1 | 01943 56XXXX |
| Calltracks Limited | 1 | 01943 581XXX |
| Datazero Ltd | 1 | 01943 582XXX |
| Hello Telecom (UK) Limited | 1 | 01943 598XXX |
| INTELLIGENT EXCHANGES LIMITED | 1 | 01943 591XXX |
| Inet Telecoms Ltd (Voipfone) | 1 | 01943 597XXX |
| Internexus Networks Limited | 1 | 01943 595XXX |
| Invosys Limited | 1 | 01943 590XXX |
| Nexbridge Communications Limited | 1 | 01943 593XXX |
…and 10 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 37 blocks Ofcom lists, 15 are protected (reserved by Ofcom and not in use). A call appearing to come from an unallocated block is a strong sign of a spoofed number.
Is a call from a 01943 5… number safe?
A local-looking number is never proof of who is calling: fraudsters spoof 01943 caller IDs so their calls look like they come from Guiseley (‘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 01943 5XXXXX 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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