Where is area code 596 from?

Answer 1

There is no telephone area code +1 596 in North America (USA, Canada, etc.); North American area codes cannot have '9' as the middle digit.

International telephone country code +596 is Martinique, a French island in the Lesser Antilles in the Caribbean.

In Mexico, area code 596 is for a part of northeastern Mexico state (estado de México), including Temascalapa, NNE of Mexico City. Landline numbers are +52 596 in international format; mobile phones are +52 1 596.

(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.)