- Prefix
01558 4- Area
- Llandeilo
- Number type
- Geographic landline (01/02)
- Format
01558 4XXXXX- From abroad
+44 1558 4XXXXX- Ofcom blocks in range
- 19
- Blocks in service
- 8
- Range holders
- 8
What are 01558 4XXXXX numbers?
Any UK number matching 01558 4XXXXX sits in the
01558 dialling code for Llandeilo.
Ofcom hands these numbers to communications providers in blocks; this range
contains 19 blocks, of which
8 are allocated and usable. Calls from these
numbers are typically homes and businesses in the Llandeilo area — or
organisations elsewhere that keep a local 01558 presence using
VoIP.
Who holds 01558 4… number ranges?
| Range holder (allocated by Ofcom) | Number blocks | Example range |
|---|---|---|
| Andrews & Arnold (Numbers) Ltd | 1 | 01558 45XXXX |
| CFL Communications Ltd | 1 | 01558 49XXXX |
| IPV6 Limited | 1 | 01558 43XXXX |
| Mars Communications Limited | 1 | 01558 44XXXX |
| Nexus Telecommunications Limited | 1 | 01558 46XXXX |
| Solutios Limited | 1 | 01558 42XXXX |
| Vectone Mobile Limited | 1 | 01558 47XXXX |
| Voxbone SA | 1 | 01558 400XXX |
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 19 blocks Ofcom lists, 11 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 01558 4… number safe?
A local-looking number is never proof of who is calling: fraudsters spoof 01558 caller IDs so their calls look like they come from Llandeilo (‘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 01558 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 01558 number ranges
Full 01558 Llandeilo area-code guide › · All UK area codes ›