- Prefix
01403 8- Area
- Horsham
- Number type
- Geographic landline (01/02)
- Format
01403 8XXXXX- From abroad
+44 1403 8XXXXX- Ofcom blocks in range
- 28
- Blocks in service
- 18
- Range holders
- 14
What are 01403 8XXXXX numbers?
Any UK number matching 01403 8XXXXX sits in the
01403 dialling code for Horsham.
Ofcom hands these numbers to communications providers in blocks; this range
contains 28 blocks, of which
18 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 8… number ranges?
| Range holder (allocated by Ofcom) | Number blocks | Example range |
|---|---|---|
| BT | 4 | 01403 82XXXX |
| Six Degrees Technology Group Limited | 2 | 01403 810XXX |
| AQL Wholesale Ltd | 1 | 01403 80XXXX |
| Andrews & Arnold (Numbers) Ltd | 1 | 01403 850XXX |
| Datazero Ltd | 1 | 01403 856XXX |
| GCI Network Solutions Limited | 1 | 01403 858XXX |
| Magrathea Telecommunications Limited | 1 | 01403 88XXXX |
| Mars Communications Limited | 1 | 01403 855XXX |
| Nationwide Telephone Assistance Ltd | 1 | 01403 859XXX |
| TGL Services (UK) Ltd | 1 | 01403 852XXX |
| Telephone Box Limited | 1 | 01403 853XXX |
| Vodafone Ltd (C&W) | 1 | 01403 83XXXX |
…and 2 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 28 blocks Ofcom lists, 10 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 8… 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 8XXXXX 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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