Telephone country code +7 (dialed as 00 7 from many places) is Russia and Kazakhstan. A number beginning with +7 41 is a landline in the far eastern part of Russia, but you need one more digit to specify the area code.
(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.)
There is no area code 795 in North America (USA, Canada, etc.).
The country code and area code of Nagoan, Bangladesh is 880, (0)741.
The country code and area code of Rottweil, Germany is 49, (0)741.
The country code and area code of Acatepec, Mexico is 52, (01)741.
Leichtenstein is telephone country code +423.
The country code and area code of Coronel Bogado, Paraguay is 595, (0)741.
The country code and area code of El Gineina, Sudan is 249, (0)741.
where is telephone country code 1816
That is not a country code.
Fiji has telephone country code +679.
Country code +57 is Colombia.
Gibraltar is country code +350.