UK Area Code Finder
Quick and easy telephone dialling code information
In the UK, an 01158 number is a normal landline phone number within the Nottingham (0115) area code.
Any UK number beginning with 0115 is a Nottingham number. The '0115' area code at the beginning is optional if you're dialling from one Nottingham 0115 landline phone to another.
There is no 01158 area code. Since the year 1995, Nottingham has had the four-digit area code 0115, followed by seven-digit local numbers.
The correct way to write a number beginning '01158' is
During the year 1995, Nottingham's area code changed from 0602 to 0115, while its old six-digit local phone numbers were prefixed with '9' to make them seven digits long.
The new system gives Nottingham nearly 8 million numbers: