[dns-operations] Advance notice - H-root address change on December 1, 2015

Kash, Howard M CIV USARMY RDECOM ARL (US) howard.m.kash.civ at mail.mil
Mon Nov 16 12:31:52 UTC 2015

Friendly reminder...

> -----Original Message-----
> From: dns-operations [mailto:dns-operations-bounces at dns-oarc.net] On
Behalf Of Kash,
> Sent: Monday, August 31, 2015 12:39 PM
> To: dns-operations at lists.dns-oarc.net <dns-operations at dns-oarc.net>
> Subject: [dns-operations] Advance notice - H-root address change on
December 1, 2015
> This is advance notice that there is a scheduled change to the IP
> for one of the authorities listed for the DNS root zone and the .ARPA TLD.
> The change is to H.ROOT-SERVERS.NET, which is administered by the U.S.
> Research Laboratory.
> The new IPv4 address for this authority is
> The new IPv6 address for the authority is 2001:500:1::53.
> This change is anticipated to be implemented in the root zone on 1
> 2015, however the new addresses are operational now. They will replace the
> previous IP addresses of and 2001:500:1::803f:235 (also
> previously known as AOS.BRL.MIL and AOS.ARL.ARMY.MIL).
> We encourage operators of DNS infrastructure to update any references to
> old IP addresses and replace them with the new addresses. In particular,
> many DNS resolvers have a DNS root "hints" file. This should be updated
> the new IP addresses.
> New hints files will be available at the following URLs once the change
> been formally executed on December 1:
>   http://www.internic.net/domain/named.root
>   http://www.internic.net/domain/named.cache
> The old IPv4 address will continue to work for six months after the
> transition (until 1 June 2016), at which point it will be retired from
> service.  The address will remain under the control of the Army Research
> Laboratory, never to be used again for DNS service.  The old IPv6 address
> will continue to work indefinitely, but may ultimately be retired from
> service.
> Simultaneous to the retirement of the old address on June 1, 2016, the
> ASN for H-root will change from 13 to 1508.
> You can monitor the transition of queries to the new addresses at the
> following URL:
>   http://h.root-servers.org/old_vs_new.html
> --
> Howard Kash
> U.S. Army Research Laboratory

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