- Prefix
01305 5- Area
- Dorchester
- Number type
- Geographic landline (01/02)
- Format
01305 5XXXXX- From abroad
+44 1305 5XXXXX- Ofcom blocks in range
- 91
- Blocks in service
- 71
- Range holders
- 58
What are 01305 5XXXXX numbers?
Any UK number matching 01305 5XXXXX sits in the
01305 dialling code for Dorchester.
Ofcom hands these numbers to communications providers in blocks; this range
contains 91 blocks, of which
71 are allocated and usable. Calls from these
numbers are typically homes and businesses in the Dorchester area — or
organisations elsewhere that keep a local 01305 presence using
VoIP.
Who holds 01305 5… number ranges?
| Range holder (allocated by Ofcom) | Number blocks | Example range |
|---|---|---|
| Sky UK Limited | 7 | 01305 549XXX |
| TalkTalk Communications Limited | 4 | 01305 520XXX |
| Colt Technology Services | 2 | 01305 571XXX |
| Datazero Ltd | 2 | 01305 551XXX |
| Fuse 2 Communications Ltd | 2 | 01305 577XXX |
| GCI Network Solutions Limited | 2 | 01305 555XXX |
| Adepteo Limited | 1 | 01305 582XXX |
| Andrews & Arnold (Numbers) Ltd | 1 | 01305 529XXX |
| Atomstream Limited | 1 | 01305 539XXX |
| BT | 1 | 01305 594XXX |
| Belgacom International Carrier Services SA | 1 | 01305 598XXX |
| Buzz Networks Limited | 1 | 01305 542XXX |
…and 46 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 91 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 01305 5… number safe?
A local-looking number is never proof of who is calling: fraudsters spoof 01305 caller IDs so their calls look like they come from Dorchester (‘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 01305 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 01305 number ranges
Full 01305 Dorchester area-code guide › · All UK area codes ›