Where is the 955 area code?

There is no area code 955 in North America (USA, Canada, etc.).

There is no area code 955 in Mexico.

International telephone country code +95 is Burma (Myanmar). A number beginning with +95 5 is a landline.

(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.)