[dns-operations] Advisory — D-root is changing its IPv4 address on the 3rd of January.

Yasuhiro Orange Morishita / 森下泰宏 yasuhiro at jprs.co.jp
Fri Dec 14 08:07:59 UTC 2012

Hello, Jason-san,

This is Yasuhiro Orange Morishita at JPRS.

Thank you for your advance notice.  We will make an announcement the
information for Japanese Internet community.

And if you also publish the information at D-root webpage
<http://d.root-servers.org/>, I would appreciate.

Yasuhiro 'Orange' Morishita <yasuhiro at jprs.co.jp>
Japan Registry Services Co., Ltd. (JPRS)
URI: <http://jprs.co.jp/en/> | <http://www.dns.jp/>

From: Jason Castonguay <castongj at umd.edu>
Date: Thu, 13 Dec 2012 17:54:41 -0500

> Hash: SHA1
> Advisory — D-root is changing its IPv4 address on the 3rd of January.
> This is advance notice that there is a scheduled change to the IPv4
> address for one of the authorities listed for the DNS root zone and
> the .ARPA TLD. The change is to D.ROOT-SERVERS.NET, which is
> administered by the University of Maryland.
> The new IPv4 address for this authority is
> The current IPv6 address for this authority is  2001:500:2d::d and it
> will continue to remain unchanged.
> This change is anticipated to be implemented in the root zone on 3
> January 2013, however the new address is currently operational. It
> will replace the previous IP address of (also once known
> We encourage operators of DNS infrastructure to update any references
> to the old IP address, and replace it with the new address. In
> particular, many DNS resolvers have a DNS root “hints” file. This
> should be updated with the new IP address.
> New hints files will be available at the following URLs once the
> change has been formally executed:
> http://www.internic.net/domain/named.root
> http://www.internic.net/domain/named.cache
> The old address will continue to work for at least six months after
> the transition, but will ultimately be retired from service.
> - -- 
> Jason Castonguay
> Network Integration Software Engineer
> Division of Information Technology
> University of Maryland
> College Park, MD 20742
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> =ktnM
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