IPv6 is supported in Monitis uptime monitoring for continuously increasing number of monitoring locations.
In the Step 1 of the Add Uptime Monitor wizard check the Use IPv6 box and enter the IPv6 address or the IPv6 supported domain.
In the Step 2 of the wizard you will see the list of monitoring locations currently supporting IPv6.
Select the locations you want and click Add.
You can also check it in your monitor’s settings what locations currently do not support IPv6 – those are marked with an asterisk.