020 area code: London
020 is the area code for London. Ofcom’s numbering data lists 5,201 number ranges starting 020, allocated to 242 providers. The largest holder is BT, with 26% of them.
Who were 020 ranges given to?
Providers Ofcom allocated these number ranges to.
- Not allocated to a provider2,065 ranges
- BT1,345 ranges
- Vodafone Ltd (C&W)335 ranges
- Colt Technology Services214 ranges
- Gamma Telecom Holdings Limited213 ranges
- Virgin Media Limited190 ranges
- Verizon UK Limited104 ranges
- Sky UK Limited63 ranges
- TalkTalk Communications Limited49 ranges
- GCI Network Solutions Limited34 ranges
- Lumen Technologies UK Limited32 ranges
- Magrathea Telecommunications Limited26 ranges
+ 231 more
Range status
How Ofcom lists the ranges starting 020.
Allocations by year
Explore by the next digit
Each block below starts 020. Pick one to narrow it down.
What a 020 number tells you
What it is
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.
020 numbers: common questions
Where is the 020 area code?
020 is the UK dialling code for London. Calls from a 020 number were made from a phone line issued for that area – although caller ID can be faked, so a local code is not proof the caller is local.
Who owns 020 numbers?
Ofcom allocated the ranges starting 020 to BT, Vodafone Ltd (C&W), Colt Technology Services and others. 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 020 number from abroad?
Replace the leading 0 with +44. For example, a number starting 020 becomes +44 20 followed by the rest of the number.
How much does it cost to call a 020 number?
Charged as a normal UK call and usually included in landline and mobile allowances.
Is a call from a 020 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 020 number call you?
Check the full number to see if it belongs to a verified UK business and what other people have reported.
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