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Hello,

You are probably visiting this webpage because you were bothered by one of our
Internet scanners doing an Internet-wide port or ping scan.

We apologize in advance if that’s the case - you can e-mail us to request an
exclusion. Please send the following information to info@portscan.work:

 * IP address or subnet(s) to exclude
 * Date/Timestamp of events (preferably with timezone)
 * Mention if you want a reply back

Below you can find a list of what we scan, and for what purposes:

 * ICMP echo - to determine which hosts respond to pings and their respective
   latency
 * Ports 22 (SSH) and 3389 (RDP) - to determine which hosts are potentially
   servers
 * Ports 80 (HTTP) and 443 (HTTPS) - to determine which hosts are potentially
   serving websites
 * Ports 8080 and other common proxy/VPN ports - to determine which hosts are
   potentially proxies/VPNs

We use the obtained information to enhance an online bad IP address detection
service, as we get more insight into certain IP addresses we couldn’t get
otherwise. Specifically, this research allow us to infer which IP addresses are
more likely to be proxying traffic or otherwise located in datacenters. The
(small) entity behind this research is a commercial one, and our services are
mostly used by SMBs and academics to filter out bad users.

While we may check if a given service is publicly exposed (e.g.: proxy service),
in under no circumstance we attempt to exploit security vulnerabilities.

For any questions or exclusion requests, please e-mail: info@portscan.work