What country would telephone number beginning 08801 come from?

Answer 1

A number beginning with 08801 is in national dialing format, which makes it impossible to say which country.

An international number beginning with +880 1 (or 00 880 1 from many countries) is in Bangladesh.

(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.)