Telephone country code 304 is assigned to the United States, specifically to the state of West Virginia. Country codes are assigned by the International Telecommunication Union (ITU) to different countries and territories for international calling purposes. When dialing internationally, the country code 304 would precede the local area code and phone number in West Virginia.
Leichtenstein is telephone country code +423.
where is telephone country code 1816
That is not a country code.
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.
Togo is country code +228.