A UK telephone number beginning with +44 773 (or 0773x in domestic format) is a mobile phone.
(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.)
US area code 872 is Chicago, IL, overlaying 312 and 773.
Area code 773 is an area code for Chicago, Illinois. The city was given this area code on October 12'th, 1996. Before this code the area code was 312, for the whole city until 708 was created for the suburbs only.
In 2009 the area code 773 stopped being in use for the city of Chicago. Instead the state employed a wider area code for the city and its suburbs rather than using two or more area codes for the full area.
Sunny Hills, Florida
The telephone area code for Manchester is 0161, or +44 161 in international format. A UK telephone number beginning with 0161 773 is most likely a BT landline in Prestwich; however, with number portability, any specific 0161 number could be located anywhere in the greater Manchester area, served by any local telephone company.
The 312 area code is used for downtown Chicago. It is is unusual in that it is completely surrounds by another area code which is 773 and covers the rest of Chicago.
This is probably a North American number, as 00 is a common international access code, and 1 is the country code for North America. Area code 773 is Chicago, Illinois, USA.
The country code and area code of Amata District- Kyoto, Japan is 81, (0)773.
The country code and area code of Tepeji del Rio- Hgo., Mexico is 52, (01)773.
All UK area codes begin with a 0. There is no area code 6010 in the UK, and there is no 06010 code either.
UK area code 020 is London.
There is no area code 20 in the UK