- Prefix
01388 4- Area
- Bishop Auckland
- Number type
- Geographic landline (01/02)
- Format
01388 4XXXXX- From abroad
+44 1388 4XXXXX- Ofcom blocks in range
- 55
- Blocks in service
- 20
- Range holders
- 12
What are 01388 4XXXXX numbers?
Any UK number matching 01388 4XXXXX sits in the
01388 dialling code for Bishop Auckland.
Ofcom hands these numbers to communications providers in blocks; this range
contains 55 blocks, of which
20 are allocated and usable. Calls from these
numbers are typically homes and businesses in the Bishop Auckland area — or
organisations elsewhere that keep a local 01388 presence using
VoIP.
Who holds 01388 4… number ranges?
| Range holder (allocated by Ofcom) | Number blocks | Example range |
|---|---|---|
| Gamma Telecom Holdings Limited | 7 | 01388 433XXX |
| BT | 3 | 01388 42XXXX |
| Digital Space Group Limited | 1 | 01388 419XXX |
| Linear Telecoms Limited | 1 | 01388 490XXX |
| Localphone Limited | 1 | 01388 414XXX |
| Redcentric Solutions Limited | 1 | 01388 412XXX |
| TalkTalk Communications Limited | 1 | 01388 417XXX |
| TelNG Limited | 1 | 01388 411XXX |
| Verizon UK Limited | 1 | 01388 40XXXX |
| VoIP-Un Limited | 1 | 01388 416XXX |
| Vodafone Ltd (C&W) | 1 | 01388 44XXXX |
| Voiceflex Limited | 1 | 01388 418XXX |
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 55 blocks Ofcom lists, 35 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 01388 4… number safe?
A local-looking number is never proof of who is calling: fraudsters spoof 01388 caller IDs so their calls look like they come from Bishop Auckland (‘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 01388 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 01388 number ranges
Full 01388 Bishop Auckland area-code guide › · All UK area codes ›