Where in North America is area code 935?

North American area code +1 934 is unassigned.

Country code +93 is Afghanistan.

(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, and many other countries use different prefixes.)