UK number
020 4557 5790
Also written +44 2045575790 or 02045575790
Landline · London (020)
Reported by one person, as a scam
Reports come from the public and we haven’t checked them. A report is not proof.
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No business has claimed this number
No UK business has registered this number with us, so we can’t confirm who holds it.
Community score
The score rises with the number of different people who report a number. It measures how widely a number has been reported, not how dangerous it is.
Activity
Counted by person, not by button press.
What people reported
Add a reportUnchecked. Each entry is one person’s account of a call, with the date they sent it. We have not verified any of it, and we never publish what they wrote.
A number joins our list of numbers several people have reported once people on different networks report it.
Ask if it called anyone else
One report is not much to go on. More people, and it means something.
Ask your family group whether 020 4557 5790 called them too. A number only joins our list once people on different networks report it, so a second voice is what makes this page worth anything.
Whatever you share says that reports aren't checked. Numbers can be faked, so a report is what someone experienced, not proof about whoever owns the number.
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No pop-ups · No interruptions · No spammy ads or fake sites
Keep an eye on this number
We will watch this number for you
If anyone reports this number from now on, we will send you one email to let you know. Then we delete your address. No newsletter, no sharing, and you do not need an account.
One email, then we delete your address. We never share it, and we will not send you anything else.
About this number
- Type
- A landline in London
- Range
- Ofcom allocated this range (020 4557) to Orange Business Holdings UK Limited on 6 May 2021.
- First reported
- 1 October 2026
Numbers can move between networks, so the caller may now use a different provider. Source: Ofcom numbering data, downloaded 23 September 2026.