Algeria is country code +213.
Landline numbers begin with +213 2, +213 3, or +213 4.
Fixed wireless numbers begin with +213 20, +213 30, or +213 40.
VSAT numbers begin with +213 96.
VoIP numbers begin with +213 98.
Mobile numbers begin with: Nedjma: +213 55
Mobilis: +213 66 or +213 69
Djezzy: +213 77 or +213 79.
(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.)
Algeria
Leichtenstein is telephone country code +423.
where is telephone country code 1816
That is not a country code.
+213 is Algeria.
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.