- Prefix
01556 4- Area
- Castle Douglas
- Number type
- Geographic landline (01/02)
- Format
01556 4XXXXX- From abroad
+44 1556 4XXXXX- Ofcom blocks in range
- 46
- Blocks in service
- 37
- Range holders
- 37
What are 01556 4XXXXX numbers?
Any UK number matching 01556 4XXXXX sits in the
01556 dialling code for Castle Douglas.
Ofcom hands these numbers to communications providers in blocks; this range
contains 46 blocks, of which
37 are allocated and usable. Calls from these
numbers are typically homes and businesses in the Castle Douglas area — or
organisations elsewhere that keep a local 01556 presence using
VoIP.
Who holds 01556 4… number ranges?
| Range holder (allocated by Ofcom) | Number blocks | Example range |
|---|---|---|
| API Telecom Limited | 1 | 01556 485XXX |
| Andrews & Arnold (Numbers) Ltd | 1 | 01556 40XXXX |
| Atomstream Limited | 1 | 01556 455XXX |
| CFL Communications Ltd | 1 | 01556 43XXXX |
| Calltracks Limited | 1 | 01556 452XXX |
| Content Guru Limited | 1 | 01556 494XXX |
| Convergence Group (wireless) Networks Limited | 1 | 01556 478XXX |
| Digitech Solutions Global Limited | 1 | 01556 450XXX |
| Fuse 2 Communications Ltd | 1 | 01556 495XXX |
| GCI Network Solutions Limited | 1 | 01556 458XXX |
| Hello Telecom (UK) Limited | 1 | 01556 482XXX |
| ICC Networks Ltd | 1 | 01556 486XXX |
…and 25 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 46 blocks Ofcom lists, 9 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 01556 4… number safe?
A local-looking number is never proof of who is calling: fraudsters spoof 01556 caller IDs so their calls look like they come from Castle Douglas (‘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 01556 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 01556 number ranges
Full 01556 Castle Douglas area-code guide › · All UK area codes ›