- Prefix
01433 3- Area
- Hathersage
- Number type
- Geographic landline (01/02)
- Format
01433 3XXXXX- From abroad
+44 1433 3XXXXX- Ofcom blocks in range
- 55
- Blocks in service
- 13
- Range holders
- 13
What are 01433 3XXXXX numbers?
Any UK number matching 01433 3XXXXX sits in the
01433 dialling code for Hathersage.
Ofcom hands these numbers to communications providers in blocks; this range
contains 55 blocks, of which
13 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 3… number ranges?
| Range holder (allocated by Ofcom) | Number blocks | Example range |
|---|---|---|
| API Telecom Limited | 1 | 01433 326XXX |
| Bicom Systems EURL | 1 | 01433 325XXX |
| ICC Networks Ltd | 1 | 01433 327XXX |
| IOVOX Limited | 1 | 01433 328XXX |
| Internexus Networks Limited | 1 | 01433 321XXX |
| Orbtalk Limited | 1 | 01433 322XXX |
| Served Up Limited | 1 | 01433 31XXXX |
| Simwood eSMS Limited | 1 | 01433 323XXX |
| Spitfire Network Services Limited | 1 | 01433 377XXX |
| TTNC Limited | 1 | 01433 35XXXX |
| TelNG Limited | 1 | 01433 39XXXX |
| VoiceHost Limited | 1 | 01433 333XXX |
…and 1 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 55 blocks Ofcom lists, 42 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 3… 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 3XXXXX 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 ›