- Prefix
01483 9- Area
- Guildford
- Number type
- Geographic landline (01/02)
- Format
01483 9XXXXX- From abroad
+44 1483 9XXXXX- Ofcom blocks in range
- 91
- Blocks in service
- 83
- Range holders
- 31
What are 01483 9XXXXX numbers?
Any UK number matching 01483 9XXXXX sits in the
01483 dialling code for Guildford.
Ofcom hands these numbers to communications providers in blocks; this range
contains 91 blocks, of which
83 are allocated and usable. Calls from these
numbers are typically homes and businesses in the Guildford area — or
organisations elsewhere that keep a local 01483 presence using
VoIP.
Who holds 01483 9… number ranges?
| Range holder (allocated by Ofcom) | Number blocks | Example range |
|---|---|---|
| Gamma Telecom Holdings Limited | 22 | 01483 901XXX |
| Colt Technology Services | 14 | 01483 900XXX |
| BT | 12 | 01483 906XXX |
| Sky UK Limited | 4 | 01483 913XXX |
| GCI Network Solutions Limited | 2 | 01483 938XXX |
| Infinity Tracking Ltd | 2 | 01483 944XXX |
| Media Hawk Ltd | 2 | 01483 914XXX |
| Voxbone SA | 2 | 01483 975XXX |
| AQL Wholesale Ltd | 1 | 01483 912XXX |
| Alnitak GmbH | 1 | 01483 911XXX |
| Belgacom International Carrier Services SA | 1 | 01483 950XXX |
| Calltracks Limited | 1 | 01483 916XXX |
…and 19 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, 5 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 01483 9… number safe?
A local-looking number is never proof of who is calling: fraudsters spoof 01483 caller IDs so their calls look like they come from Guildford (‘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 01483 9XXXXX 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 01483 number ranges
Full 01483 Guildford area-code guide › · All UK area codes ›