Telephone country codes never begin with zero.
Country code +267, dialed as 00 267 from many places, is Botswana.
Country code +67, dialed as 002 67 from many places, is an incomplete code for an island in the Pacific Ocean. You need one more digit to specify the country. For example, +679 is Fiji.
To avoid confusion, it is best to write an international telephone number in correct international format, beginning with the plus symbol and the correct telephone country code (e.g., +267 or +679), omitting any dialing prefix.
(The plus signmeans "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.)
0044, then the Scottish number minus its leading zero.
Leichtenstein is telephone country code +423.
Dialing from the USA, 00 44 would be UK. 00 is the international access code in USA followed by the country code of UK which is 44.
Dialling the UK from abroad - you would dial 0044
where is telephone country code 1816
There is no such thing as a "country zip code." A Zip Code is a postal code used in either the United States or the Philippines, corresponding to a town or a part of a city.
That is not a country code.
Country code 0044 is the international dialing code for the United Kingdom. When dialing from abroad, you would use this code before the local phone number. For example, to call a UK number from another country, you would start with +44 followed by the local number, omitting the leading zero.
Dial 0044 (the country code for the UK) - then the mobile number WITHOUT the leading zero.
Country code +57 is Colombia.
Country code 52 is Mexico.
Fiji has telephone country code +679.