IPscan is a free, online, open-source service for testing IPv6 firewall responses to ICMPv6 pings and connection attempts targeted at multiple, user-selectable, IPv6 TCP and UDP ports. IPscan now reports responses from intermediary network devices too. IPscan offers functionality similar to what you might expect from a future IPv6 version of GRC's ShieldsUP® utility. So far over 198,501 IPv6 hosts, and around 19,453,050 IPv6 TCP/UDP ports, have been tested.
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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 wiki for further background information, details of the privacy policy and IPv6 debug suggestions. All other registered trademarks are the property of their respective owners.