020 is the telephone dialling code for all of London.
149.25
020 is London. 020-3 numbers can be anywhere in London. The operator who "owns" this number is Frontier Systems. Note that the area code for London is just 020, not 0203 or 0207 or 0208.
UK telephone area code 020 is London, including both the former "Inner London" and "Outer London" zones. A number beginning with 020 7485 is most likely a BT landline in Kentish Town, but with number portability any particular 020 number could be located anywhere in the greater London 020 zone, served by any local telephone company.
The (020) 8491 prefix belongs to Virgin Media, for use anywhere in London.
London is area code 020.
020 is the area code for London. You cannot determine the location any more specifically than that. Originally, the old outer London numbers (0181) were transferred to numbers starting 020 8xxx, which explains the mistaken belief that numbers in that range must be located in outer London. New numbers are being issued to central London starting with 020 8xxx. Also, with number portability, any specific 020 number could be located anywhere in the greater London 020 area.
The population of Sheo is 3,689.
London
A UK telephone number like (020) 84xx xxxx will be in London. You need to state two more digits in order to be able to work out which part of London; eg. (020) 8484 or (020) 8411 etc.
UK area code 020 is London.
UK telephone area code 020 is London and surrounding areas. It is not possible to narrow down the location any further with the information given. Furthermore, with number portability, any specific 020 number could be located anywhere in the greater London 020 area.
Area code 020 is London. A number beginning 020 8674 is most likely a BT landline in Tulse Hill; however, with number portability, any 020 number could be located anywhere in London, served by any local phone company.