Telephone country code +7 (dialed as 00 7 from many places) is Russia and Kazakhstan. (It was formerly the entire USSR, but all of the other former Soviet republics have received new telephone country codes.) Telephone area code +7 877 is for landlines in Russia, in the Republic of Adygea(Адыге́я or Адыгэ), including the capital city of Maykop (Майкоп or Мыекъуапэ). Adygea is in the Caucasus region of southwestern Russia, completely surrounded by Krasnodar Krai.

(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.)