Convenient public IPv6 test addresses

Are there any convenient public, globally routable test addresses for IPv6?

Similar to how 8.8.8.8 and 8.8.4.4 tend to get used this way for IPv4?

Solution 1:

The shortest I've seen is www.sprint.net (2600::).

Solution 2:

Handily enough, 2001:4860:4860::8888 and 2001:4860:4860::8844 are the IPv6 equivalents of 8.8.8.8 and 8.8.4.4!

That's fairly easy to remember.

Solution 3:

example.com, example.net, and example.org are reserved domains for documentation purposes. However, they also resolve to a running HTTP server and can be opened in browser and this server also response to ping:

# ping -c1 example.net
PING example.net (93.184.216.34): 56 data bytes
...

# ping6 -c1 example.net
PING6(56=40+8+8 bytes) .... --> 2606:2800:220:1:248:1893:25c8:1946
...

The IP addresses are hard to remember, yet the domain names are easy, so if you have DNS...

Alternatively you can use the DNS servers of Quad9:
(great alternative to Google's DNS; better privacy and malware filtering)

# ping 9.9.9.9
# ping6 2620:fe::fe