- Prefix
01723 5- Area
- Scarborough
- Number type
- Geographic landline (01/02)
- Format
01723 5XXXXX- From abroad
+44 1723 5XXXXX- Ofcom blocks in range
- 28
- Blocks in service
- 18
- Range holders
- 15
What are 01723 5XXXXX numbers?
Any UK number matching 01723 5XXXXX sits in the
01723 dialling code for Scarborough.
Ofcom hands these numbers to communications providers in blocks; this range
contains 28 blocks, of which
18 are allocated and usable. Calls from these
numbers are typically homes and businesses in the Scarborough area — or
organisations elsewhere that keep a local 01723 presence using
VoIP.
Who holds 01723 5… number ranges?
| Range holder (allocated by Ofcom) | Number blocks | Example range |
|---|---|---|
| BT | 3 | 01723 50XXXX |
| Sky UK Limited | 2 | 01723 563XXX |
| Adepteo Limited | 1 | 01723 568XXX |
| Colt Technology Services | 1 | 01723 565XXX |
| Convergence Group (wireless) Networks Limited | 1 | 01723 561XXX |
| Flextel Limited | 1 | 01723 59XXXX |
| Mi Telecom Limited | 1 | 01723 566XXX |
| Mintaka Limited | 1 | 01723 562XXX |
| Spitfire Network Services Limited | 1 | 01723 537XXX |
| TGL Services (UK) Ltd | 1 | 01723 55XXXX |
| TTNC Limited | 1 | 01723 54XXXX |
| TalkTalk Communications Limited | 1 | 01723 567XXX |
…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 28 blocks Ofcom lists, 10 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 01723 5… number safe?
A local-looking number is never proof of who is calling: fraudsters spoof 01723 caller IDs so their calls look like they come from Scarborough (‘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 01723 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.
Run mobiles for a business? See our business mobile network comparison or get a quote.
More 01723 number ranges
Full 01723 Scarborough area-code guide › · All UK area codes ›