Where in North America is area code 200?

There is no area code +1 200 in North America (USA, Canada, etc.).

There is no telephone country code +200. Country code +20 is Egypt, but no valid numbers begin with +20 0.

Mexico has an area code 200, used for satellite phones.

(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.)