Which countries are prohibited from using betbtc?

I only see this in T&C

''Please take in consideration that users from several locations are not allowed to register an account or place bets with us due to restrictions in this territory.
We use an IP Blocking tool, however this is not 100% efficient as it can't restrict all range of IPs. If your IP is not blocked you are still not allowed to bet on BetBTC if you belong to these regions''