- Prefix
01553 4- Area
- Kings Lynn
- Number type
- Geographic landline (01/02)
- Format
01553 4XXXXX- From abroad
+44 1553 4XXXXX- Ofcom blocks in range
- 100
- Blocks in service
- 36
- Range holders
- 30
What are 01553 4XXXXX numbers?
Any UK number matching 01553 4XXXXX sits in the
01553 dialling code for Kings Lynn.
Ofcom hands these numbers to communications providers in blocks; this range
contains 100 blocks, of which
36 are allocated and usable. Calls from these
numbers are typically homes and businesses in the Kings Lynn area — or
organisations elsewhere that keep a local 01553 presence using
VoIP.
Who holds 01553 4… number ranges?
| Range holder (allocated by Ofcom) | Number blocks | Example range |
|---|---|---|
| BT | 3 | 01553 400XXX |
| Sky UK Limited | 3 | 01553 406XXX |
| Colt Technology Services | 2 | 01553 407XXX |
| TalkTalk Communications Limited | 2 | 01553 404XXX |
| 24 Seven Cloud Communications Ltd | 1 | 01553 453XXX |
| Adepteo Limited | 1 | 01553 412XXX |
| Alnitak GmbH | 1 | 01553 413XXX |
| Belgacom International Carrier Services SA | 1 | 01553 458XXX |
| Bink Networks Ltd | 1 | 01553 430XXX |
| Calltracks Limited | 1 | 01553 422XXX |
| DIDWW Ireland Limited | 1 | 01553 456XXX |
| Dial 9 Communications Limited | 1 | 01553 452XXX |
…and 18 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 100 blocks Ofcom lists, 57 are protected (reserved by Ofcom and not in use) and 7 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 01553 4… number safe?
A local-looking number is never proof of who is calling: fraudsters spoof 01553 caller IDs so their calls look like they come from Kings Lynn (‘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 01553 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 01553 number ranges
Full 01553 Kings Lynn area-code guide › · All UK area codes ›