Ordinary landline numbers tied to a place. The area code tells you which dialling area the number was issued for – 0161 is Manchester, 020 is London, 01388 is Bishop Auckland.

What it costs

Charged as a normal UK call and usually included in landline and mobile allowances.

Watch out for

A local-looking number feels familiar, which is exactly why scammers spoof them. A local area code is not proof the caller is local.

The range holder isn’t necessarily the caller. Ofcom gives numbers to providers in blocks, and people and businesses can take their number with them when they switch. To find out who actually called, check the full number.

Questions

012421 numbers: common questions

Who owns 012421 numbers?

Ofcom allocated the ranges starting 012421 to BT. Numbers can be moved between providers, so this shows who the range was originally given to – not who is using a particular number today.

How do I call a 012421 number from abroad?

Replace the leading 0 with +44. For example, a number starting 012421 becomes +44 12421 followed by the rest of the number.

How much does it cost to call a 012421 number?

Charged as a normal UK call and usually included in landline and mobile allowances.

Is a call from a 012421 number a scam?

A local-looking number feels familiar, which is exactly why scammers spoof them. A local area code is not proof the caller is local. Check the full number on Who’s Calling to see if it belongs to a verified business and what other people have reported.

Did a 012421 number call you?

Check the full number to see if it belongs to a verified UK business and what other people have reported.

UK phone numbers explained → · Let us screen unknown callers →