- Prefix
01223 7- Area
- Cambridge
- Number type
- Geographic landline (01/02)
- Format
01223 7XXXXX- From abroad
+44 1223 7XXXXX- Ofcom blocks in range
- 55
- Blocks in service
- 55
- Range holders
- 30
What are 01223 7XXXXX numbers?
Any UK number matching 01223 7XXXXX sits in the
01223 dialling code for Cambridge.
Ofcom hands these numbers to communications providers in blocks; this range
contains 55 blocks, of which
55 are allocated and usable. Calls from these
numbers are typically homes and businesses in the Cambridge area — or
organisations elsewhere that keep a local 01223 presence using
VoIP.
Who holds 01223 7… number ranges?
| Range holder (allocated by Ofcom) | Number blocks | Example range |
|---|---|---|
| Colt Technology Services | 8 | 01223 735XXX |
| BT | 7 | 01223 730XXX |
| Lumen Technologies UK Limited | 5 | 01223 770XXX |
| Virgin Media Limited | 4 | 01223 70XXXX |
| Daisy Communications Ltd | 3 | 01223 731XXX |
| Gamma Telecom Holdings Limited | 3 | 01223 734XXX |
| AQL Wholesale Ltd | 2 | 01223 750XXX |
| (AQ) LIMITED | 1 | 01223 793XXX |
| Belgacom International Carrier Services SA | 1 | 01223 758XXX |
| Fuse 2 Communications Ltd | 1 | 01223 788XXX |
| Hyperoptic Ltd | 1 | 01223 759XXX |
| IOVOX Limited | 1 | 01223 784XXX |
…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.
Is a call from a 01223 7… number safe?
A local-looking number is never proof of who is calling: fraudsters spoof 01223 caller IDs so their calls look like they come from Cambridge (‘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 01223 7XXXXX 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 01223 number ranges
Full 01223 Cambridge area-code guide › · All UK area codes ›