Berlin Wall Memorial - Fulton, MO

Changes to MOREnet Blackhole DNS Servers

Friday, October 22, 2010

On Nov. 1, 2010, MOREnet will restrict access to the Blackhole DNS servers to only those IP addresses issued by MOREnet or recognized as MOREnet member IP addresses.

Unrecognized IP addresses will not be able to resolve DNS names, and the Internet will appear broken on those systems. Users may receive an error about DNS server unavailability, but many systems will just be unable to use the Internet normally. The Blackhole DNS IP addresses and the correct addresses for use at your site may be found at This change will allow us to ensure the high availability and performance that MOREnet members have come to expect.
Please take a moment to check your configuration to make sure you are using the correct servers. If you don't use MOREnet's Blackhole DNS servers, this message does not affect you. However, now would be a good time to consider this valuable service. For a list of IP addresses recognized by MOREnet used by your organization, log in to MyMOREnet ( and view the Member Summary.
The MOREnet Blackhole DNS servers have proven to be very successful at helping members in the ongoing battle against malware infections. We are pleased with the performance and effectiveness of the service and are working to make it even better.
If you, or anyone you know, have configured systems without MOREnet-assigned IP addresses to resolve DNS entries from the MOREnet BHDNS servers, those systems will need to be changed to use other DNS servers prior to Nov. 1. There are several options for DNS resolution, the best option being to contact your local ISP and ask them for their DNS server IP addresses.
For any questions, contact MOREnet Security at