There is no UK area code of 0204.
London uses the area code of 020 but there are no telephone numbers beginning (020) 4... yet.
If by "0204" you are in fact referring to part of the local phone number after the 020 area code, there are three possibilities:
(020) 3020 4xxx
Issued by phone company Imovo.
(020) 7020 4xxx
Issued by phone company Cable and Wireless.
(020) 8020 4xxx
Issued by phone company Teledesign.
None of these companies make public any more precise location information. The numbers in question could be anywhere in London, inner or outer - or not in London at all, even.
01604 is probably not an area code. 01 is used as the international calling code for most of North America, and area code 604 is in and around Vancouver, British Columbia, Canada. ----- 01604 is the area code for Northampton, UK
In the UK, 01904 is used for York. In international format, that's +44 1904.
(The plus sign means "insert your international access prefix here." From a GSM mobile phone, you can enter the number in full international format, starting with the plus sign. The most common prefix is 00, but North America (USA, Canada, etc.) uses 011, Japan uses 010, Australia uses 0011, and many other countries use different prefixes.)
In the UK, area code 0161 is Manchester.
An international number beginning with +1 614 (dialed as 00 1 614 from many places) is in Columbus, Ohio, USA.
(The plus sign means "insert your international access prefix here." From a GSM mobile phone, you can enter the number in full international format, starting with the plus sign. The most common prefix is 00, but North America (USA, Canada, etc.) uses 011, Japan uses 010, Australia uses 0011, and many other countries use different prefixes.)
In the UK, area code 0161 is Manchester. The trailing 6 would be the first digit of the 7-digit local number.
International area code +1 616 is Grand Rapids, MI, USA.
The telephone country code for Zimbabwe is +263. The area code for Karoi is 064, or +263 64 in international format.
There is no telephone area code 185 in Russia.
The telephone country code for Zimbabwe is +263. The area code for Beitbridge is 0286, or +263 286 in international format.
No, telephone area codes are discrete data.
Telephone country code +93 is Afghanistan, and area code +93 25 (Afghan domestic telephone area code 025) is the city of Logar, south of Kabul.
The telephone country code for Zimbabwe is +263. The area code for Chakari is 0688, or +263 688 in international format.
It has the area code 082.
Area code of Banepa is 011
The telephone country code for Zimbabwe is +263. The area code for Glendale is 0376, or +263 376 in international format.
The telephone country code for Argentina is +54. The area code for Chascomus is 02241, or +54 2241 in international format.
The telephone country code for Zimbabwe is +263. The area code for Guruve is 058, or +263 58 in international format.
The telephone country code for Zimbabwe is +263. The area code for Makuti is 063, or +263 63 in international format.