Where is area code 20 7 8?

Answer 1

In North America (telephone country code +1: USA, Canada, etc.), area code 207 is the US state of Maine.

In the UK (telephone country code +44), area code 20 is London. Telephone numbers in the area formerly designated "inner London" changed from area code 171 with 7-digit local numbers to area code 20 with 8-digit local numbers beginning with 7. Although locals will still sometimes refer to "area code 0207," the correct area code for all of London is just 020 (domestic format) or +44 20 (international format).

(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.)