what is the area is phone no 0203
The 0203 area code is the prefix for a large number of London phone numbers. If you see any 0203 phone numbers it will be for a location either in London or the surrounding area.The 0203 area code is one subset of the 020 prefix. Since it was setup in the year 2000, the 020 prefix has covered a significant part of the greater London area and is always followed by a eight-digit local number. 0203 is simply a subset of the 0203. â 020 refers to london-wide numbers. â All eight digits following 020 prefix are just part local telephone number. â Regardless of where you are in London, when calling any other 020 number you can simply dial the eight digit local number.