public stratum 1 ipv6 ntp servers

[Merike Kaeo]

Hi.

Can anyone point me to info on publicly available ipv6 ntp servers?  There
was a thread on nanog mid-October entitled IPv6-news and I'm sifting
through that thread but so far haven't come up with definitive publicly
available servers.  [using ntp.hexago.com as a start but want a few others
- and ones that are here to stay for a while :)].

Thanks.

- merike