- Prefix
01255 5- Area
- Clacton-on-Sea
- Number type
- Geographic landline (01/02)
- Format
01255 5XXXXX- From abroad
+44 1255 5XXXXX- Ofcom blocks in range
- 46
- Blocks in service
- 13
- Range holders
- 12
What are 01255 5XXXXX numbers?
Any UK number matching 01255 5XXXXX sits in the
01255 dialling code for Clacton-on-Sea.
Ofcom hands these numbers to communications providers in blocks; this range
contains 46 blocks, of which
13 are allocated and usable. Calls from these
numbers are typically homes and businesses in the Clacton-on-Sea area — or
organisations elsewhere that keep a local 01255 presence using
VoIP.
Who holds 01255 5… number ranges?
| Range holder (allocated by Ofcom) | Number blocks | Example range |
|---|---|---|
| BT | 2 | 01255 50XXXX |
| Colt Technology Services | 1 | 01255 568XXX |
| DRD Communications Limited | 1 | 01255 560XXX |
| GCI Network Solutions Limited | 1 | 01255 57XXXX |
| Hello Telecom (UK) Limited | 1 | 01255 563XXX |
| Invoco Ltd | 1 | 01255 564XXX |
| Orbtalk Limited | 1 | 01255 567XXX |
| Served Up Limited | 1 | 01255 59XXXX |
| Six Degrees Technology Group Limited | 1 | 01255 514XXX |
| Sky UK Limited | 1 | 01255 569XXX |
| TTNC Limited | 1 | 01255 58XXXX |
| VoiceHost Limited | 1 | 01255 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 46 blocks Ofcom lists, 33 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 01255 5… number safe?
A local-looking number is never proof of who is calling: fraudsters spoof 01255 caller IDs so their calls look like they come from Clacton-on-Sea (‘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 01255 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 01255 number ranges
Full 01255 Clacton-on-Sea area-code guide › · All UK area codes ›