- Prefix
01423 4- Area
- Boroughbridge
- Number type
- Geographic landline (01/02)
- Format
01423 4XXXXX- From abroad
+44 1423 4XXXXX- Ofcom blocks in range
- 100
- Blocks in service
- 57
- Range holders
- 47
What are 01423 4XXXXX numbers?
Any UK number matching 01423 4XXXXX sits in the
01423 dialling code for Boroughbridge.
Ofcom hands these numbers to communications providers in blocks; this range
contains 100 blocks, of which
57 are allocated and usable. Calls from these
numbers are typically homes and businesses in the Boroughbridge area — or
organisations elsewhere that keep a local 01423 presence using
VoIP.
Who holds 01423 4… number ranges?
| Range holder (allocated by Ofcom) | Number blocks | Example range |
|---|---|---|
| Sky UK Limited | 6 | 01423 421XXX |
| Gamma Telecom Holdings Limited | 4 | 01423 411XXX |
| BT | 2 | 01423 457XXX |
| IOVOX Limited | 2 | 01423 427XXX |
| API Telecom Limited | 1 | 01423 437XXX |
| Adepteo Limited | 1 | 01423 446XXX |
| Andrews & Arnold (Numbers) Ltd | 1 | 01423 410XXX |
| Atomstream Limited | 1 | 01423 415XXX |
| Belgacom International Carrier Services SA | 1 | 01423 458XXX |
| Bicom Systems EURL | 1 | 01423 435XXX |
| Bink Networks Ltd | 1 | 01423 469XXX |
| Calltracks Limited | 1 | 01423 417XXX |
…and 35 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, 37 are protected (reserved by Ofcom and not in use) and 6 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 01423 4… number safe?
A local-looking number is never proof of who is calling: fraudsters spoof 01423 caller IDs so their calls look like they come from Boroughbridge (‘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 01423 4XXXXX 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 01423 number ranges
Full 01423 Boroughbridge area-code guide › · All UK area codes ›