Value your UK mobile number free: type it into the checker for an instant value band, see what makes a number worth more, and learn how to sell it safely.

Which 07 ranges are genuinely mobile, why 070 and 076 are not, and why no prefix can tell you which network a number is on today.

What premium and VIP mobile numbers really are, what the UK price bands are, how porting works, and the checks to make before you buy.