Kazakhstan shares country code +7 with Russia. Numbers in Kazakhstan begin with +7 7.
Russia and Kazakhstan both have country code +7.
00 isn't part of the country code, it is a commonly used international access prefix. Country code +7 is Russia and Kazakhstan, and numbers beginning with +7 7 are in Kazakhstan.
Telephone country codes never begin with zero, and there is no country code +77. Country code +7 is Russia and Kazakhstan, and a number beginning with +7 7xx is in Kazakhstan. See the related question for more information.
Country code +7 is Russia and Kazakhstan. Numbers beginning with +7 76 are in Kazakhstan.
Country code +7 is Russia and Kazakhstan, but +7 27 is an invalid code.
+7 is Russia and Kazakhstan.
7 is the country code of Kazakhstan/Russia
+7 is shared by Russia and Kazakhstan.
invalid code Telephone country code +7 is Russia and Kazakhstan, but there are no valid numbers beginning with +7 0.
Kazakhstan was part of the USSR. It is now an independent country.
Country code +7 was originally the entire USSR. When the USSR dissolved, all of the other newly independent constituent republics got their own telephone country codes, leaving only Russia and Kazakhstan. There has been speculation that Kazakhstan may at some point split into its own separate country code, but for now the economic benefits of being more closely associated with Russia, plus the costs of changing the telephone numbering system, outweigh the benefits of having a separate code.