- Prefix
01433 5- Area
- Hathersage
- Number type
- Geographic landline (01/02)
- Format
01433 5XXXXX- From abroad
+44 1433 5XXXXX- Ofcom blocks in range
- 28
- Blocks in service
- 18
- Range holders
- 9
What are 01433 5XXXXX numbers?
Any UK number matching 01433 5XXXXX sits in the
01433 dialling code for Hathersage.
Ofcom hands these numbers to communications providers in blocks; this range
contains 28 blocks, of which
18 are allocated and usable. Calls from these
numbers are typically homes and businesses in the Hathersage area — or
organisations elsewhere that keep a local 01433 presence using
VoIP.
Who holds 01433 5… number ranges?
| Range holder (allocated by Ofcom) | Number blocks | Example range |
|---|---|---|
| GCI Network Solutions Limited | 10 | 01433 540XXX |
| Andrews & Arnold (Numbers) Ltd | 1 | 01433 57XXXX |
| IPV6 Limited | 1 | 01433 55XXXX |
| Invade International Ltd | 1 | 01433 58XXXX |
| Mars Communications Limited | 1 | 01433 56XXXX |
| Net-Work Internet Ltd | 1 | 01433 50XXXX |
| Nexus Telecommunications Limited | 1 | 01433 59XXXX |
| Solutios Limited | 1 | 01433 53XXXX |
| Voxbone SA | 1 | 01433 520XXX |
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 28 blocks Ofcom lists, 10 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 01433 5… number safe?
A local-looking number is never proof of who is calling: fraudsters spoof 01433 caller IDs so their calls look like they come from Hathersage (‘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 01433 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.
Run mobiles for a business? See our business mobile network comparison or get a quote.
More 01433 number ranges
Full 01433 Hathersage area-code guide › · All UK area codes ›