A global DNS maintenance is scheduled for February 1, 2019, and authoritative server operators must get ready for it. That is why we dedicate our today’s article to the state of readiness of .CZ domains for changes that will be effective from the beginning of next month.
We are releasing dns-collector, an entry part of our pipeline for monitoring of our DNS servers and analysis of the DNS traffic. Together with advanced analysis of the collected data, we can not only monitor the DNS traffic for urgent problems, but also detect and examine long-term trends and issues (e.g. misconfiguration of other servers). We have presented this system at the IT 15.2 conference (video and slides in Czech).
In mid-February we informed about Reducing TTL in the .cz zone by one hour. Then, at a similar hour every Wednesday, we reduced it by another hour, until on March 15, 2017 we reached the required value of 1 hour (i.e. TTL=3600).