New York City area codes:
Area code 212 and overlay code 646 serve Manhattan.
Area code 718 and overlay codes 347 and 929 serve the other four boroughs (Brooklyn, Queens, Bronx, and Staten Island).
Area code 917 serves all five boroughs.
The country code for the USA, along with Canada and certain nearby islands, is +1.
(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.)
The country code and area code of Acambay, Mexico is 52, (01)718.
The country code and area code of Tulus, Sudan is 249, (0)718.
Leichtenstein is telephone country code +423.
where is telephone country code 1816
That is not a country code.
The country code and area code of Enshi- HB, China is 86, (0)718.
Fiji has telephone country code +679.
Country code +57 is Colombia.
Gibraltar is country code +350.
Moldova is country code +373.
Slovenia is country code +386.
Vanuatu is country code +678.