Google Public DNS now supports DNS64

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Erik Kline

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Jun 6, 2016, 5:08:07 PM 6/6/16
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Dear network administrators,

Five years ago, in celebration of World IPv6 Day , we announced support for querying Google Public DNS over IPv6 .  Today, we are pleased to announce additional support for public DNS64 .

Administrators of IPv6-only networks can combine this with locally-provided NAT64 using the well-known prefix 64:ff9b::/96 to reach public IPv4-only sites from IPv6-only networks.

Simply replace the current Google Public DNS IPv6 addresses (2001:4860:4860::8888 and 8844) with the Google Public DNS64 IPv6 addresses:

2001:4860:4860::64

2001:4860:4860::6464

to receive synthesized AAAA (and PTR) records with the 64:ff9b::/96 prefix.

This service is not suitable for networks without a NAT64 gateway that uses 64:ff9b::/96. This service does not provide access to private domains that cannot be resolved from the public Internet. This service is not necessary for dual-stack networks or hosts.

More information is available at https://developers.google.com/speed/public-dns/docs/dns64 .

Happy IPv6 transitioning,

  • (Erik Kline and) the Google Public DNS team

Erik Kline

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Jul 14, 2016, 12:11:20 PM 7/14/16
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If you're not using these DNS64 servers directly then I would say: no,
it's very unlikely to be related.

In order to properly diagnose the situation, you might consider
including the subdomain(s) in question.

Regards,
-ek

On 14 July 2016 at 03:13, < hottie...@gmail.com > wrote:
> Hi, I was wondering if this is the reason why I can't access a subdomain
> using the google dns. I'm not able to access a subdomain since June 8th,
> last week. Are you getting complaints/feedbacks about this? Thanks for your
> reply.
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