go-dns-info-server

DNS Info Server

DNS server which responds to TXT requests with various info:

• a counter
• some random value
• server's unix timestamp

The purpose of this server is primarily for integration testing of DNS clients -- specifically to ensure that caching is working as expected and/or that cache busting is working as expected.

The server is running at: dns-info.zxs.ch. Give it a try with e.g.:

dig +short TXT dns-info.zxs.ch

"time=1696792214"
"rand=8724171680981445161"
"counter=42"

Code mostly based off this gist.