whoami or who is my DNS resolver?

Max Rosin

There are thousands of memes that DNS is the cause of (almost) all computer issues, so debugging DNS issues is necessary more often than anyone would like. One question that comes up often when debugging DNS is: Which server is my actual DNS resolver? An easy way I found to answer this question is the whoami tool of Akamai. whoami.ds.akahelp.net will always respond with the IP address of the requesting server.

$ dig +short TXT whoami.ds.akahelp.net
"ns" "203.0.113.1"

Max Rosin

I am a Systems Engineer from Germany. In my personal time I like to tinker with all kinds of technologies, some of it is available here at my blog. In my professional life I work a lot with Kubernetes and monitoring systems. Occasionally I give workshops about Kubernetes and conference talks about my work.
If you want to talk about one of my posts, feel free to reach out via Twitter.