Where in North America is area code 696?

There is no area code +1 699 in North America (USA, Canada, etc.).

There is also no international country code +699.

There may be other countries with a domestic area code 699.

(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.)