- Prefix
01403 6- Area
- Horsham
- Number type
- Geographic landline (01/02)
- Format
01403 6XXXXX- From abroad
+44 1403 6XXXXX- Ofcom blocks in range
- 100
- Blocks in service
- 23
- Range holders
- 20
What are 01403 6XXXXX numbers?
Any UK number matching 01403 6XXXXX sits in the
01403 dialling code for Horsham.
Ofcom hands these numbers to communications providers in blocks; this range
contains 100 blocks, of which
23 are allocated and usable. Calls from these
numbers are typically homes and businesses in the Horsham area — or
organisations elsewhere that keep a local 01403 presence using
VoIP.
Who holds 01403 6… number ranges?
| Range holder (allocated by Ofcom) | Number blocks | Example range |
|---|---|---|
| Fuse 2 Communications Ltd | 2 | 01403 616XXX |
| Gamma Telecom Holdings Limited | 2 | 01403 620XXX |
| Sky UK Limited | 2 | 01403 612XXX |
| Colt Technology Services | 1 | 01403 628XXX |
| EVE CONNECT LTD | 1 | 01403 622XXX |
| GCI Network Solutions Limited | 1 | 01403 618XXX |
| INTELLIGENT EXCHANGES LIMITED | 1 | 01403 603XXX |
| IP Voice Networks Ltd | 1 | 01403 626XXX |
| Invosys Limited | 1 | 01403 602XXX |
| Kalnet4U Ltd | 1 | 01403 610XXX |
| M247 Ltd | 1 | 01403 614XXX |
| Media Hawk Ltd | 1 | 01403 615XXX |
…and 8 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 100 blocks Ofcom lists, 54 are protected (reserved by Ofcom and not in use) and 23 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 01403 6… number safe?
A local-looking number is never proof of who is calling: fraudsters spoof 01403 caller IDs so their calls look like they come from Horsham (‘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 01403 6XXXXX 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.