- Prefix
01865 5- Area
- Oxford
- Number type
- Geographic landline (01/02)
- Format
01865 5XXXXX- From abroad
+44 1865 5XXXXX- Ofcom blocks in range
- 82
- Blocks in service
- 77
- Range holders
- 34
What are 01865 5XXXXX numbers?
Any UK number matching 01865 5XXXXX sits in the
01865 dialling code for Oxford.
Ofcom hands these numbers to communications providers in blocks; this range
contains 82 blocks, of which
77 are allocated and usable. Calls from these
numbers are typically homes and businesses in the Oxford area — or
organisations elsewhere that keep a local 01865 presence using
VoIP.
Who holds 01865 5… number ranges?
| Range holder (allocated by Ofcom) | Number blocks | Example range |
|---|---|---|
| BT | 15 | 01865 507XXX |
| Colt Technology Services | 9 | 01865 502XXX |
| Vodafone Ltd (C&W) | 7 | 01865 500XXX |
| Gamma Telecom Holdings Limited | 6 | 01865 509XXX |
| GCI Network Solutions Limited | 4 | 01865 564XXX |
| Sky UK Limited | 4 | 01865 523XXX |
| Daisy Communications Ltd | 3 | 01865 531XXX |
| Voxbone SA | 3 | 01865 519XXX |
| BT OnePhone Limited | 1 | 01865 529XXX |
| Barritec Limited | 1 | 01865 588XXX |
| Barritel Limited | 1 | 01865 584XXX |
| Belgacom International Carrier Services SA | 1 | 01865 503XXX |
…and 22 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 82 blocks Ofcom lists, 2 are protected (reserved by Ofcom and not in use) and 3 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 01865 5… number safe?
A local-looking number is never proof of who is calling: fraudsters spoof 01865 caller IDs so their calls look like they come from Oxford (‘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 01865 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.
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