We have received a request from a research group to let everyone know that they will be conducting Internet wide scanning of DNS servers. This is their request:
"Our team at the Network Architectures and Services Dept. (I8) of TU München, Germany, has started a DNS scan. This has similar goals as the scans that we have conducted for SSL and SSH in the past months. Once again, the purpose is purely scientific. The scanning machine is 18.104.22.168. We are querying DNS servers to resolve host names. We do not in any way try to compromise the servers. Additionally, the load caused by our activities should be very low on a single server. The idea of our queries is to get a better understanding of the inner workings of DNS, one of the most ubiquitous protocols of the Internet. We would it appreciate it very much if you added a comment in your database. Please note that we respond to every complaint and are happy to blacklist systems with annoyed admins."