[rob-olmos]

Interesting. Any likely reasons why not having IPv6/AAAA make the site inaccessible to them?

Sounds like most of the internet would be inaccessible to them as well?

[segfaultbuserr]

A broken AAAA record, perhaps. Sometimes the AAAA is invalid or broken without getting noticed by the sysadmin. I've personally reported broken AAAA records before.

[rob-olmos]

I see. Although from the mmalone's comment it sounded like an AAAA record wasn't set at all, rather than set incorrectly.