How do you prevent 996 area code calls?

Answer 1

There is no area code +1 996 in North America (USA, Canada, etc.).

Country code +996 is Kyrgyzstan, a former Soviet Republic in Central Asia.

(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.)