Phone labels

Landline or mobile, and how sure we are about a number.

Help centre · Labels and verification · Updated 8 October 2026

Each phone number says what kind it is, Landline or Mobile, and how sure we are about it, for example Confirmed by 3 sources.

We check that a number is in a valid UK format. We don't call numbers to test them, so a number is Claimed until independent sources agree.

If a number is wrong when you call it, say so in the Caller Console. It feeds back into the book as a correction, and the next person to call that business gets a better record. About calls.