Where in Mexico is area code 427?

Answer 1

Mexican area code 427 serves San Juan del Río, Querétaro, and nearby areas in Querétaro, Hidalgo, and México states. All subscriber numbers are 7 digits. In international format, a landline in this area is +52 427; mobiles from this area are +52 1 427.

(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.)