google ipv6 routes via cogent

Olivier Benghozi olivier.benghozi at
Thu Mar 2 14:11:14 UTC 2017

Due to various peering disputes (notably with Hurricane Electric) Cogent just don't have all the routes in IPv6 (and should be regarded as a partial IPv6 transit only).
One should not rely only on Cogent for its transit, anyway :)
Don't count on any improvement soon. It was already discussed here one year ago...

> On 25 feb. 2017 at 16:49, Aaron <aaron1 at> wrote :
> Cogent is telling me that I can't route through cogent to get to google ipv6
> routes (particularly the well known dns addresses 2001:4860:4860::88xx)
> because google decided not to advertise those route to one of their mutual
> peers.
> Anyone know anything about this ?  .and why it happened and when it will be
> resolved ?

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