Domain Name Server Changes

UPDATED: November 15, 2013

Computers and other internet network devices use an IP address (a combination of numbers and dots) to route requests to a specific site (url address).  A Domain Name Server (DNS) manages a massive database that maps domain names to IP addresses (like a GPS of the internet).

The University of Kentucky has private networks managed by multiple DNS services. The university will decommission the DNS service provided by ncc.uky.edu (128.163.1.6) and nic.net.uky.edu (128.163.3.10) from December 17, 2013 to December 30, 2013.  Therefore, UK technical administrators and/or users who have a manually-defined DNS on their university device should review network settings by December 16, 2013.

An update is NOT needed on devices using Dynamic Host Configuration Protocol (DHCP) to obtain an IP address and accepting DHCP DNS option values. However, an update is needed to the Transmission Control Protocol (TCP) properties on devices using a static IP or containing a static DNS list (which overrides the values provided by DHCP).

The list below provides DNS servers commonly used for resolving host-names to addresses. Use the information when static DNS server lists are required on the device:

Area of service

DNS Server

New DNS IP address setting

Campus

sndca1.net.uky.edu

128.163.1.11

Campus

sndca2.net.uky.edu

128.163.37.132

Medical Center

sndmc1.net.uky.edu

128.163.111.166

Medical Center

sndmc2.net.uky.edu

128.163.111.167


UK departmental technical administrators should ask their staff and faculty to review network settings and adjust all departmental servers, machines and devices using a static DNS of 128.163.3.10 and 128.163.1.6 before DNS resolution services cease on December 16, 2013.

UK staff and faculty can consult their departmental technical administrators or contact the UKIT Service Desk at 859-218-HELP (4357).

In summary:
* For Windows/Apple/Unix machines inspect your DNS settings: If you have static entries then update; If you obtain the DNS server list dynamically, no action is necessary.
* For non-IT based DNS servers: Update your configuration when using 128.163.1.6 and/or 128.163.3.10 for forwarding.
* If you have a domain (i.e. something.com, something.org, etc.) using the servers 128.163.1.6 and/or 128.163.3.10 as the authoritative DNS for the domain you will need to update your registry. Contact robert@uky.edu for additional details before updating your registry.

Please note the decommission dates have been adjusted. Please disregard previously posted dates.

859-218-HELP (859-218-4357) 218help@uky.edu