Every certificate authority (CA) has it is own rules and list of dis-allowed domain names or prohibited regions/countries. Those rules are also affected by Embargo rules of the country where CA's Headquarters located.
Restrictions by Sectigo, Comodo, GoGetSSL
- BY – The Republic of Belarus
- CU – Cuba
- IR – Iran
- KP – Korea, Democratic People’s Republic of
- RU – The Russian Federation
- SY – Syrian Arab Republic
- VE – Venezuela (Organizations owned/controlled by the Government)
- GOV.VE – Venezuela
- Crimea
- Donetsk peoples republic
- Luhansk peoples republic
Restrictions by DigiCert, RapidSSL, Thawte, Geotrust
- RU – The Russian Federation
- BY – The Republic of Belarus
- CU Cuba
- IR Iran
- SY Syria
- KP Korea, Democratic People’s Republic of
- Crimea
- Donetsk peoples republic
- Luhansk peoples republic
- Venezuela
