Performance Zen

Category: DNS

  • PerformanceZen Tools: Dig-Web

    So, like a lot of my colleagues, I use DigWebInterface when trying to diagnose DNS issues. However, the UI is traight out of 1999 and it is full of ads. So today I asked my friend Claude to help me rewrite a DNS diagnostics tool for the 2020s

    What we came up with is Dig-Web, hosted right here on this server. It has all the same features of DigWebInterface with a cleaner UI look and no ads, since it’s running on a server that is already paid for.

    Try it out and let me know what you think.

  • Web Performance: Dear American Red Cross, You have a problem

    American Red Cross:

    I know you have other things on your plate right now, but you seem to have a DNS problem.

    redcross.org.           86400   IN      NS      arcdns3.redcross.org.
redcross.org.           86400   IN      NS      arcdns2.redcross.org.
redcross.org.           86400   IN      NS      arcdns1.redcross.org.
;; Received 172 bytes from 204.74.112.1#53(TLD1.ULTRADNS.NET) in 46 ms


redcross.org.           3600    IN      A       162.6.217.197
redcross.org.           3600    IN      NS      arcdns2.redcross.org.
redcross.org.           3600    IN      NS      arcdns1.redcross.org.
;; Received 122 bytes from 162.6.217.142#53(arcdns2.redcross.org) in 33 ms

    The name server arcdns3.redcross.org (162.6.90.141) either doesn’t exist, or is broken. Unfortunately, the Top-Level DNS servers still have it on file.

    The site is working great [here]. Except for the DNS issues.
    Keep up the good work.