IPscan: Online IPv6 Firewall Tester & Port Scanner

Web-hosted IPv6 Firewall Security & Network Diagnostics

IPscan is a free, online, open-source service for testing the visibility of your IPv6 host, in response to ICMPv6 pings and UDP/TCP-port connection attempts. IPscan also identifies responses from intermediary (aka mid-point or transit) network devices, to give you oversight of all the firewalls protecting your host. IPscan offers functionality similar to what you might expect from a future IPv6 version of GRC's ShieldsUP® utility. So far over 210,959 IPv6 hosts, and around 20,673,950 IPv6 TCP/UDP ports, have been tested.


About to assess your machine's connection to this webserver:

Please return when you have a valid IPv6 address to test. If you believe this result to be in error, OR you would like to test a proxied or deny-listed host, then please email me.


Please visit the IPscan github wiki for further background information, details of the privacy policy, automation and command-line testing, and debug suggestions. All other registered trademarks are the property of their respective owners.