DNS is an open system based on shared responsibility. This has been an important prerequisite for the rapid spread of the internet across the globe. But it also entails that the quality of the service is dependant on each and everyone who is operating DNS servers on the internet. At IIS, we strive for a robust internet infrastructure with a high-quality domain name system.
In order to help engineers and administrators to increase quality in their part of the system IIS has, among other things, developed the DNSCheck tool. We also perform a health check of the .se domain every year and produce a report on this. Furthermore, we actively work for spreading DNSSEC, the security extensions to DNS which stops abuse like cache poisoning.
In the subsections here, you who are responsible for DNS operations can find useful information and tools that help you sustain a high service quality.