Telephone country codes never begin with zero.
Country code +9, dialed as 00 9 from many places, is an incomplete code somewhere in Asia, or for a transnational telephone service. For example, +94 is Sri Lanka and +970 is the Palestinian Authority.
However, in many areas, particularly Tanzania and Uganda but also in other countries, 009 is the prefix for all international calls, so the actual telephone country code would be whatever digits follow after 009.
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., +970 or +504), 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.)
Telephone country codes never begin with zero.
Country code +90, dialed as 00 90 from many places, is Turkey.
However, it can be confusing, because 009 is the international access prefix from some countries.
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., +90 or +354), 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.)
Telephone country codes never begin with zero.
Country code +99, dialed as 00 99 from many places, is an incomplete code, probably for a former Soviet republic in Central Asia. You need one more digit to specify the country. For example, +995 is the Republic of Georgia.
Country code +9, dialed as 009 9 from many places, is an incomplete code for somewhere in Asia, or for a transnational telephone service. You need one or two more digits to identify the country or service. For example, +92 is Pakistan.
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., +995 or +92), 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.)
Telephone country codes never begin with zero.
Country code +990, dialed as 00 990 from many places, is an invalid code.
Country code +90, dialed as 009 90 from many places, is Turkey.
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., +994 or +90), 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.)
'00' isn't part of the country code, it is a commonly used international access prefix. Country code +90 is Turkey.
Turkey/Istanbul
I99999999967999999999
Azerbaijan
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.