- Prefix
01503 4- Area
- Looe
- Number type
- Geographic landline (01/02)
- Format
01503 4XXXXX- From abroad
+44 1503 4XXXXX- Ofcom blocks in range
- 19
- Blocks in service
- 16
- Range holders
- 16
What are 01503 4XXXXX numbers?
Any UK number matching 01503 4XXXXX sits in the
01503 dialling code for Looe.
Ofcom hands these numbers to communications providers in blocks; this range
contains 19 blocks, of which
16 are allocated and usable. Calls from these
numbers are typically homes and businesses in the Looe area — or
organisations elsewhere that keep a local 01503 presence using
VoIP.
Who holds 01503 4… number ranges?
| Range holder (allocated by Ofcom) | Number blocks | Example range |
|---|---|---|
| Andrews & Arnold (Numbers) Ltd | 1 | 01503 45XXXX |
| Atomstream Limited | 1 | 01503 498XXX |
| Calltracks Limited | 1 | 01503 491XXX |
| Datazero Ltd | 1 | 01503 493XXX |
| Digitech Solutions Global Limited | 1 | 01503 490XXX |
| GCI Network Solutions Limited | 1 | 01503 497XXX |
| IPV6 Limited | 1 | 01503 44XXXX |
| Inet Telecoms Ltd (Voipfone) | 1 | 01503 492XXX |
| Mars Communications Limited | 1 | 01503 43XXXX |
| Nexus Telecommunications Limited | 1 | 01503 46XXXX |
| Solutios Limited | 1 | 01503 42XXXX |
| Suretec Systems Ltd | 1 | 01503 494XXX |
…and 4 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 19 blocks Ofcom lists, 3 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 01503 4… number safe?
A local-looking number is never proof of who is calling: fraudsters spoof 01503 caller IDs so their calls look like they come from Looe (‘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 01503 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.
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