Telephone country codes never begin with zero.
Country code +375, dialed as 00 375 from many places, is Belarus (formerly Byelorussia).
Country code +7, dialed as 003 7 from many places, is Russia and Kazakhstan. However, there are no valid numbers beginning with +7 5.
To avoid confusion, it is best to write an international telephone number in correct international format, beginning with the plus symbol and the correct telephone country code (e.g., +375), omitting any dialing prefix.
(The plus signmeans "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.)
00375 is the International dialling code for Belarus.
Hong Kong
91 is the country code for India.
7 is the country code of Kazakhstan/Russia
In a code law country, the brand name belongs to whoever it is that registers it first.
Impossible to say without knowing which country.
Country code +880 is Bangladesh, and +880 19 is a Banglalink mobile.
Country code +218 is Libya, but that's not enough digits for the rest of the number.
.00375
3.75 x 10-3
Telephone country code +221 is Senegal, in western Africa, but there are no valid telephone numbers beginning with +221 4.
011 is the access code for making an outbound international call from the USA or Canada. '59' could therefore be the first two digits of the country code - you would need three digits to identify which country.