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Unlike US mobile numbers, UK mobile numbers don’t carry area codes tied to a geographic region.
UK mobile phones don’t have location data tied to them the way stationary UK landlines do. US mobile numbers retain an area code tied to a region, but UK mobile numbers have no area code linking them to a specific geography — which is why call detail records show no location information for these numbers. Applies to: UK mobile numbers, call location data, City and Region columns

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Last modified on September 25, 2026