01223 5XXXXX numbers – Cambridge

Prefix

01223 5

Area

Cambridge

Number type

Geographic landline (01/02)

Format

01223 5XXXXX

From abroad

+44 1223 5XXXXX

Ofcom blocks in range

19

Blocks in service

16

Range holders

3

What are 01223 5XXXXX numbers?

Any UK number matching 01223 5XXXXX sits in the 01223 dialling code for Cambridge. 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 Cambridge area — or organisations elsewhere that keep a local 01223 presence using VoIP.

Who holds 01223 5… number ranges?

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 01223 5… 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 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.

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More 01223 number ranges

Full 01223 Cambridge area-code guide › · All UK area codes ›