- Prefix
01766 5- Area
- Porthmadog
- Number type
- Geographic landline (01/02)
- Format
01766 5XXXXX- From abroad
+44 1766 5XXXXX- Ofcom blocks in range
- 28
- Blocks in service
- 18
- Range holders
- 13
What are 01766 5XXXXX numbers?
Any UK number matching 01766 5XXXXX sits in the
01766 dialling code for Porthmadog.
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 Porthmadog area — or
organisations elsewhere that keep a local 01766 presence using
VoIP.
Who holds 01766 5… number ranges?
| Range holder (allocated by Ofcom) | Number blocks | Example range |
|---|---|---|
| BT | 5 | 01766 51XXXX |
| Lumen Technologies UK Limited | 2 | 01766 584XXX |
| 24 Seven Cloud Communications Ltd | 1 | 01766 508XXX |
| Colt Technology Services | 1 | 01766 506XXX |
| GCI Network Solutions Limited | 1 | 01766 55XXXX |
| I.T Communications Limited | 1 | 01766 507XXX |
| IP Voice Networks Ltd | 1 | 01766 509XXX |
| Linear Telecoms Limited | 1 | 01766 500XXX |
| Number Services Ltd. | 1 | 01766 501XXX |
| Orbtalk Limited | 1 | 01766 502XXX |
| Syntec Limited | 1 | 01766 57XXXX |
| Vodafone Ltd (C&W) | 1 | 01766 56XXXX |
…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 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 01766 5… number safe?
A local-looking number is never proof of who is calling: fraudsters spoof 01766 caller IDs so their calls look like they come from Porthmadog (‘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 01766 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 01766 number ranges
Full 01766 Porthmadog area-code guide › · All UK area codes ›