- Prefix
01438 6- Area
- Stevenage
- Number type
- Geographic landline (01/02)
- Format
01438 6XXXXX- From abroad
+44 1438 6XXXXX- Ofcom blocks in range
- 100
- Blocks in service
- 4
- Range holders
- 4
What are 01438 6XXXXX numbers?
Any UK number matching 01438 6XXXXX sits in the
01438 dialling code for Stevenage.
Ofcom hands these numbers to communications providers in blocks; this range
contains 100 blocks, of which
4 are allocated and usable. Calls from these
numbers are typically homes and businesses in the Stevenage area — or
organisations elsewhere that keep a local 01438 presence using
VoIP.
Who holds 01438 6… number ranges?
| Range holder (allocated by Ofcom) | Number blocks | Example range |
|---|---|---|
| Colt Technology Services | 1 | 01438 602XXX |
| Gamma Telecom Holdings Limited | 1 | 01438 601XXX |
| Hyperoptic Ltd | 1 | 01438 603XXX |
| TELNYX UK LIMITED | 1 | 01438 600XXX |
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, 92 are protected (reserved by Ofcom and not in use) and 4 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 01438 6… number safe?
A local-looking number is never proof of who is calling: fraudsters spoof 01438 caller IDs so their calls look like they come from Stevenage (‘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 01438 6XXXXX 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 01438 number ranges
Full 01438 Stevenage area-code guide › · All UK area codes ›