- Prefix
01871 8- Area
- Castlebay
- Number type
- Geographic landline (01/02)
- Format
01871 8XXXXX- From abroad
+44 1871 8XXXXX- Ofcom blocks in range
- 28
- Blocks in service
- 8
- Range holders
- 7
What are 01871 8XXXXX numbers?
Any UK number matching 01871 8XXXXX sits in the
01871 dialling code for Castlebay.
Ofcom hands these numbers to communications providers in blocks; this range
contains 28 blocks, of which
8 are allocated and usable. Calls from these
numbers are typically homes and businesses in the Castlebay area — or
organisations elsewhere that keep a local 01871 presence using
VoIP.
Who holds 01871 8… number ranges?
| Range holder (allocated by Ofcom) | Number blocks | Example range |
|---|---|---|
| BT | 2 | 01871 81XXXX |
| (AQ) LIMITED | 1 | 01871 85XXXX |
| Barritel Limited | 1 | 01871 86XXXX |
| Magrathea Telecommunications Limited | 1 | 01871 80XXXX |
| Nationwide Telephone Assistance Ltd | 1 | 01871 87XXXX |
| VoIP-Un Limited | 1 | 01871 83XXXX |
| VoiceHost Limited | 1 | 01871 888XXX |
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, 20 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 01871 8… number safe?
A local-looking number is never proof of who is calling: fraudsters spoof 01871 caller IDs so their calls look like they come from Castlebay (‘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 01871 8XXXXX 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 01871 number ranges
Full 01871 Castlebay area-code guide › · All UK area codes ›