UK number
020 3504 9309
Also written +44 2035049309 or 02035049309
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 reportCalled 4 times in 1 day, no answer
A number joins our list of numbers several people have reported once people on different networks report it.
About this number
- Type
- A landline in London
- Range
- Ofcom allocated this range (020 3504) to Core Telecom Limited on 27 April 2010.
- First reported
- 28 September 2026
Numbers can move between networks, so the caller may now use a different provider. Source: Ofcom numbering data, downloaded 23 September 2026.