Long time ago, when we call to
foreign country, it was not necessary to know the country code. There
were three ways, station-to-station call, collect call, and person-to-person
call. We call to local telephone company first and simply say "I would
like to make an international telephone call to Japan. The destination
number is Tokyo, 3-xxxx-xxxx. Please make it a station-to-station call."
A telephone operator dials the source country code (Ex. USA), the
destination country code (Ex. Japan), and the domestic telephone number requested.
Nowadays, this way becomes obsolete. You dial everything directly
yourself and talk. No third party intervenes.
This tool provides you both the source and destination country code on
behalf of the telephone operator.
International Telephone Prefix Code
When you call to people who are living in a foreign country, you should know
the source country code and the destination country code.
When my daughter went to Europe with high school friends, her money was
about to run out. I called to a hotel at Granada in Spain where my
daughter stayed. I dialed 011-34- preceding the known domestic
telephone number of the hotel. I had to call so many times until I
eventually caught up her in early morning Spanish time. We must call
The number enclosed by parenthesis is used as a prefix of a domestic long
distance call. Don't dial it.
Japan prefix is (0) such as "(0)-3" to Tokyo area.
USA prefix is (1) such as "(1)-408" to silicon valley area.