- Prefix
01555 5- Area
- Lanark
- Number type
- Geographic landline (01/02)
- Format
01555 5XXXXX- From abroad
+44 1555 5XXXXX- Ofcom blocks in range
- 55
- Blocks in service
- 16
- Range holders
- 15
What are 01555 5XXXXX numbers?
Any UK number matching 01555 5XXXXX sits in the
01555 dialling code for Lanark.
Ofcom hands these numbers to communications providers in blocks; this range
contains 55 blocks, of which
16 are allocated and usable. Calls from these
numbers are typically homes and businesses in the Lanark area — or
organisations elsewhere that keep a local 01555 presence using
VoIP.
Who holds 01555 5… number ranges?
| Range holder (allocated by Ofcom) | Number blocks | Example range |
|---|---|---|
| BT | 2 | 01555 535XXX |
| 24 Seven Cloud Communications Ltd | 1 | 01555 532XXX |
| DRD Communications Limited | 1 | 01555 591XXX |
| Dial 9 Communications Limited | 1 | 01555 530XXX |
| Digitech Solutions Global Limited | 1 | 01555 580XXX |
| Flextel Limited | 1 | 01555 52XXXX |
| GCI Network Solutions Limited | 1 | 01555 54XXXX |
| ICUK Computing Services Limited | 1 | 01555 533XXX |
| Linear Telecoms Limited | 1 | 01555 510XXX |
| Served Up Limited | 1 | 01555 50XXXX |
| SiPalto Ltd | 1 | 01555 534XXX |
| Sky UK Limited | 1 | 01555 537XXX |
…and 3 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 55 blocks Ofcom lists, 28 are protected (reserved by Ofcom and not in use) and 11 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 01555 5… number safe?
A local-looking number is never proof of who is calling: fraudsters spoof 01555 caller IDs so their calls look like they come from Lanark (‘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 01555 5XXXXX 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.
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