Mobile phone numbers

[Coldicote]

Mobiles have long numbers, often 11 digits. Does anone know how to trace the origin of suspicious or nuisance calls? If the number is known does that make any difference? I know of one problem number starting with 0646. Thank you.

[Mustardmit]

I've managed to do it by Googling the number but you need to enclose it in quotation marks with a plus sign in front eg:
+"0646blahblahbla"

[factor-fiction]

Just type the number into google and it may show you an entry on a site such as WhoCallsMe