What is the area code of Dover?

Answer 1

That depends on which Dover you mean.

Dover, England, is in area code +44 1304, or 01304 within the UK.

Dover, Delaware, USA, is in area code +1 302.

(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.)

Answer 2

Dover, Delaware, is in area code +1 302, along with the whole state of Delaware.

Dover, England, is in area code 01304, or +44 1304 in 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.)