020 3357 Dialing Code
London
Dialing Code 020 3357 is part of Area Code 020, which covers London and the surrounding area.
The majority of numbers in the 020 Area Code belong to normal landlines in London, but it is possible that these numbers are being used elsewhere as virtual numbers.
There are multiple telephone companies operating in the 020 Area Code and they are allocated blocks of numbers, which can be identified by the digits following the Area Code. In this case, the digits 3357 after the area code indicate that the range of numbers was originally allocated to Lumen Technologies UK Limited on 20 December 2007, although due to number portability, individual numbers within this range may now be allocated to other operators.
020 area code information
| Area Code: | 020 |
|---|---|
| Location: | London |
| Dialing Code: | 020 3357 |
| Provider: | Lumen Technologies UK Limited |
| Date range allocated: | 20 December 2007 |
| Call Costs: | Normal landline rate |
| Area code required for local calls: | No |
| Local number length: | 8 |
| Number format: | 020 3357 #### |
| International number format: | +44 20 3357 #### |
| Last code change: | April 2000 from 0171 (inner London) and 0181 (outer London). |
This page was last updated on 9 August 2023.