- Prefix
01403 9- Area
- Horsham
- Number type
- Geographic landline (01/02)
- Format
01403 9XXXXX- From abroad
+44 1403 9XXXXX- Ofcom blocks in range
- 91
- Blocks in service
- 17
- Range holders
- 12
What are 01403 9XXXXX numbers?
Any UK number matching 01403 9XXXXX sits in the
01403 dialling code for Horsham.
Ofcom hands these numbers to communications providers in blocks; this range
contains 91 blocks, of which
17 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 9… number ranges?
| Range holder (allocated by Ofcom) | Number blocks | Example range |
|---|---|---|
| Gamma Telecom Holdings Limited | 4 | 01403 907XXX |
| BT | 3 | 01403 900XXX |
| 24 Seven Cloud Communications Ltd | 1 | 01403 902XXX |
| Belgacom International Carrier Services SA | 1 | 01403 908XXX |
| Colt Technology Services | 1 | 01403 906XXX |
| DIDWW Ireland Limited | 1 | 01403 910XXX |
| Dial 9 Communications Limited | 1 | 01403 901XXX |
| ICUK Computing Services Limited | 1 | 01403 911XXX |
| Mi Telecom Limited | 1 | 01403 909XXX |
| SiPalto Ltd | 1 | 01403 905XXX |
| Sky UK Limited | 1 | 01403 903XXX |
| VOXYONDER NETWORK SERVICES UK LTD | 1 | 01403 904XXX |
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, 74 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 01403 9… 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 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.
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