Are you able to detect if someone is preventing port scans?

Yes, even if someone blocks port scans, we can still detect server usage by checking the ISP type, which can reveal if an IP is likely used as a proxy.

Yes, we can still detect if someone is trying to hide server activity, even if they block port scans. Port scanning helps us identify whether a customer is running a web server, which may indicate that their IP is being used as a proxy. For a proxy to work, certain ports must be open. If those ports appear closed - possibly because they’re spoofed to evade detection - we can still assess the likelihood of proxy usage by analyzing the type of Internet Service Provider (ISP). Server-hosting ISPs are a strong signal that the IP might be used in this way.