There is no area code 163 in North America (USA, Canada, etc.). North American area codes never begin with '1'.
North American telephone numbers are often quoted as, for example, "1-63x-555-0123," where the '1' is the domestic long-distance dialing prefix (coincidentally the same as the telephone country code). Then you would be looking for area code 63x, but you need one more digit.
UK area code 01623 (or +44 1623) is Mansfield.
An international number beginning with +1 623 is in the west part of metro Phoenix, Arizona, 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, and many other countries use different prefixes.)
There is no telephone country code +163.
Telephone country code +1 is North America (USA, Canada, etc.), and 63 is the first two digits of a three-digit area code. You need the following digit to be more specific.
(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 Japan uses 010, Australia uses 0011, and many other countries use different prefixes.)
Leichtenstein is telephone country code +423.
where is telephone country code 1816
That is not a country code.
There is no 909 country code.
There is no telephone country code +897, nor +89, nor any other country code beginning with +89. There are no valid telephone numbers beginning with +89.
Gibraltar is country code +350.
Moldova is country code +373.
Slovenia is country code +386.
Togo is country code +228.
Liberia is country code +231.
Angola is country code +244.
Mozambique is country code +258.