- Prefix
01866 5- Area
- Kilchrenan
- Number type
- Geographic landline (01/02)
- Format
01866 5XXXXX- From abroad
+44 1866 5XXXXX- Ofcom blocks in range
- 100
- Blocks in service
- 9
- Range holders
- 8
What are 01866 5XXXXX numbers?
Any UK number matching 01866 5XXXXX sits in the
01866 dialling code for Kilchrenan.
Ofcom hands these numbers to communications providers in blocks; this range
contains 100 blocks, of which
9 are allocated and usable. Calls from these
numbers are typically homes and businesses in the Kilchrenan area — or
organisations elsewhere that keep a local 01866 presence using
VoIP.
Who holds 01866 5… number ranges?
| Range holder (allocated by Ofcom) | Number blocks | Example range |
|---|---|---|
| Mi Telecom Limited | 2 | 01866 552XXX |
| 24 Seven Cloud Communications Ltd | 1 | 01866 551XXX |
| Bink Networks Ltd | 1 | 01866 557XXX |
| Dial 9 Communications Limited | 1 | 01866 550XXX |
| ICUK Computing Services Limited | 1 | 01866 556XXX |
| KCOM Group Ltd | 1 | 01866 554XXX |
| VOXYONDER NETWORK SERVICES UK LTD | 1 | 01866 558XXX |
| Vodafone Ltd (C&W) | 1 | 01866 555XXX |
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 100 blocks Ofcom lists, 90 are protected (reserved by Ofcom and not in use) and 1 are free/unallocated. A call appearing to come from an unallocated block is a strong sign of a spoofed number.
Is a call from a 01866 5… number safe?
A local-looking number is never proof of who is calling: fraudsters spoof 01866 caller IDs so their calls look like they come from Kilchrenan (‘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 01866 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 01866 number ranges
Full 01866 Kilchrenan area-code guide › · All UK area codes ›