- Prefix
01255 3- Area
- Clacton-on-Sea
- Number type
- Geographic landline (01/02)
- Format
01255 3XXXXX- From abroad
+44 1255 3XXXXX- Ofcom blocks in range
- 46
- Blocks in service
- 20
- Range holders
- 8
What are 01255 3XXXXX numbers?
Any UK number matching 01255 3XXXXX 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
20 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 3… number ranges?
| Range holder (allocated by Ofcom) | Number blocks | Example range |
|---|---|---|
| GCI Network Solutions Limited | 10 | 01255 380XXX |
| TalkTalk Communications Limited | 3 | 01255 317XXX |
| Digital Space Group Limited | 2 | 01255 35XXXX |
| (AQ) LIMITED | 1 | 01255 33XXXX |
| Verizon UK Limited | 1 | 01255 39XXXX |
| VoIP-Un Limited | 1 | 01255 34XXXX |
| Voiceflex Limited | 1 | 01255 32XXXX |
| Voxbone SA | 1 | 01255 360XXX |
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, 26 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 3… 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 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 01255 number ranges
Full 01255 Clacton-on-Sea area-code guide › · All UK area codes ›