- Prefix
01573 6- Area
- Kelso
- Number type
- Geographic landline (01/02)
- Format
01573 6XXXXX- From abroad
+44 1573 6XXXXX- Ofcom blocks in range
- 55
- Blocks in service
- 38
- Range holders
- 38
What are 01573 6XXXXX numbers?
Any UK number matching 01573 6XXXXX sits in the
01573 dialling code for Kelso.
Ofcom hands these numbers to communications providers in blocks; this range
contains 55 blocks, of which
38 are allocated and usable. Calls from these
numbers are typically homes and businesses in the Kelso area — or
organisations elsewhere that keep a local 01573 presence using
VoIP.
Who holds 01573 6… number ranges?
| Range holder (allocated by Ofcom) | Number blocks | Example range |
|---|---|---|
| API Telecom Limited | 1 | 01573 664XXX |
| Adepteo Limited | 1 | 01573 688XXX |
| Atomstream Limited | 1 | 01573 654XXX |
| Bicom Systems EURL | 1 | 01573 663XXX |
| CFL Communications Ltd | 1 | 01573 63XXXX |
| Calltracks Limited | 1 | 01573 651XXX |
| Colt Technology Services | 1 | 01573 673XXX |
| Convergence Group (wireless) Networks Limited | 1 | 01573 670XXX |
| DIDWW Ireland Limited | 1 | 01573 685XXX |
| Dial 9 Communications Limited | 1 | 01573 682XXX |
| Digitech Solutions Global Limited | 1 | 01573 650XXX |
| EVE CONNECT LTD | 1 | 01573 672XXX |
…and 26 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, 17 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 01573 6… number safe?
A local-looking number is never proof of who is calling: fraudsters spoof 01573 caller IDs so their calls look like they come from Kelso (‘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 01573 6XXXXX 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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