Where is area code 736?

There is no area code +1 736 in North America (US, Canada, etc.) as of 2013.

Mexican area code 736 is in the north central part of the state of Guerrero, including Teloloapan. Landline numbers are +52 736; mobiles are +52 1 736.

International telephone country code +7 is Russia and Kazakhstan. Numbers beginning with +7 3 are in Russia, but there are no numbers beginning with +7 36.

(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.)