Tell us about your experience with this number
The 020 dialling code covers London and the surrounding area.
Number 020 8723 4621 is potentially valid.
Ofcom records show that numbers starting 0208723 are allocated to Virgin Media Limited. Note that due to number portability if an individual number has moved to a different operator this information is not publicly available.
Ofcom's last recorded change for this number range was May 1999.
Phone numbers beginning 020 are geographic numbers.