Mexican area code 33 is Guadalajara, Jalisco.
Landline numbers: +52 33
Mobile numbers: +52 1 33
The subscriber number is a further 8 digits in all cases.
(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.)
011 is the international access prefix used in the US and Canada
52 is the country code for Mexico
33 is the city code for Guadalajara
(Note that to call a mobile phone in Mexico, you must insert the prefix '1' in between the country code and city code. For example, a mobile in Guadalajara would be dialed from the US beginning 011-52-1-33.)
No. There is an area code 33 which is Guadalajara, Jalisco.
There is no area code 678 in Mexico.
There is no area code 333 in North America. Apparently Skype has issued some numbers in area code 333, but they cannot be reached from the regular telephone network, since 333 is an unauthorized code.
The country code and area code of Mpaka, Swaziland is 268, 333.
505 is the area code for Zuni, New Mexico.
The country code and area code of Cuauhtemoc, Mexico is 52, (01)913.
The country code and area code of Ajuchitlan, Mexico is 52, (01)419.
The country code and area code of Acambaro, Mexico is 52, (01)417.
The country code and area code of Imuris, Mexico is 52, (01)632.
The country code and area code of Chicomuselo, Mexico is 52, (01)963.
The country code and area code of Amatlan, Mexico is 52, (01)768.
The country code and area code of Ahuacuotzingo, Mexico is 52, (01)756.
The country code and area code of Akumal, Mexico is 52, (01)984.