where is 523- phone code
There is no area code 523 in North America (USA, Canada, etc.). It  is unassigned.    International telephone country code +52 is Mexico, and a number  beginning with â¦ +52 3 is a landline in the western part of the  country; for example, a number beginning with +52 33 is a landline  in Guadalajara.here is no area code 529 in Mexico. It is unassigned.    However, Mexico uses international telephone country code +52, and  area codes beginning with 9 are in the so â¦ uthernmost part of the  country. For example, the area code for the city of Oaxaca is 951.