Numbers with prefix 20 in United Kingdom
This page shows information about numbers beginning with 20 in United Kingdom. If you received a call from an unknown number with this prefix, search the full number in our database to read community reports and comments. Landline London. Cost: Normal.
Search a number with prefix 20
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No numbers reported with prefix 20
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About numbers 20
Landline London. Cost: Normal. A prefix describes an allocation. Portability and caller-ID spoofing mean it cannot identify the caller on its own.
Source and review
Google libphonenumber (compiled from national numbering plans) · Document: 2026-08-28 · Reviewed: 2026-08-31
A prefix describes an allocation. Portability and caller-ID spoofing mean it cannot identify the caller on its own.