This is free simple tool for IPv6 ping. But it working not only for IP address, this ipv6 ping test will work for URL or even for IPv4 address.
If you using URL - our system will parse it and find domain name, then tool will try to resolve IPv6 address and will use it.
When your IP or URL is not IPv6 compatible - it will ping IPv4 address.
Ping uses the ICMP protocol's mandatory ECHO_REQUEST datagram to elicit an ICMP ECHO_RESPONSE from a host or gateway. ECHO_REQUEST datagrams including an IP and ICMP header, followed by a struct timeval and then an arbitrary number of "pad" bytes that used to fill outgoing packet.
You also need to know that some remote servers do not allow to ping they (due firewall settings), that is why ping of some online server (ping some remote ip address) can be fail (it's not issue of our service).
Examples of resouces that can be used for IPv6 ping:ipv6.google.com, yahoo.com, facebook.com, www.wikipedia.org, vk.com, www.mozilla.org, www.comcast.net, www.att.com, www.orange.fr, 2400:cb00:2048:1::6810:2802, 2a00:1450:400e:800::200e.
Settings of this ping ipv6 address tool are: hops number = 20, ttl = 50, size = 64 bytes.