- Prefix
01403 5- Area
- Horsham
- Number type
- Geographic landline (01/02)
- Format
01403 5XXXXX- From abroad
+44 1403 5XXXXX- Ofcom blocks in range
- 64
- Blocks in service
- 37
- Range holders
- 34
What are 01403 5XXXXX numbers?
Any UK number matching 01403 5XXXXX sits in the
01403 dialling code for Horsham.
Ofcom hands these numbers to communications providers in blocks; this range
contains 64 blocks, of which
37 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 5… number ranges?
| Range holder (allocated by Ofcom) | Number blocks | Example range |
|---|---|---|
| TalkTalk Communications Limited | 3 | 01403 541XXX |
| Digital Space Group Limited | 2 | 01403 542XXX |
| (AQ) LIMITED | 1 | 01403 540XXX |
| Atomstream Limited | 1 | 01403 587XXX |
| Buzz Networks Limited | 1 | 01403 586XXX |
| CFL Communications Ltd | 1 | 01403 569XXX |
| Calltracks Limited | 1 | 01403 593XXX |
| Citrus Telecommunications Ltd | 1 | 01403 55XXXX |
| Core Telecom Limited | 1 | 01403 594XXX |
| Digitech Solutions Global Limited | 1 | 01403 591XXX |
| Entanet International Ltd | 1 | 01403 543XXX |
| Gamma Telecom Holdings Limited | 1 | 01403 547XXX |
…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 64 blocks Ofcom lists, 27 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 5… 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 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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