Sometimes your Internet Service Provider (ISP) blocks specific sites at the network level. You can bypass this by using a public DNS like Google or Cloudflare. Use 1.1.1.1 . Google DNS: Use 8.8.8.8 and 8.8.4.4 .
If you are blocked by a local network (like at an office or school) rather than a geo-restriction: how to unblock powerball website