Telephone country codes never begin with zero.
Telephone country code +7, dialed as 00 7 from many places, is Russia and Kazakhstan. A number beginning with +7 9 is a mobile phone from Russia.
Telephone country code +9, dialed as 007 9 from many places, is an incomplete country code in western Asia, or an incomplete code for a transnational telephone service. You need one or two more digits to narrow down the location.
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., +7 or +966), omitting any dialing prefix.
(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.)
Leichtenstein is telephone country code +423.
where is telephone country code 1816
That is not a country code.
Landcode 0079 corresponds to the country of Peru, specifically for international dialing. Area code 50 is not a specific area code; however, if you meant area code 051, it refers to the Lima region. For more accurate information, please clarify the area code you are referring to.
Country code +57 is Colombia.
Country code 52 is Mexico.
Fiji has telephone country code +679.
Gibraltar is country code +350.
Moldova is country code +373.
Slovenia is country code +386.
Vanuatu is country code +678.
Niue is country code +683.