mess-with-dns-backend
mess-with-dns-backend copied to clipboard
jvns
Simple example (without changing any records between requests): 
Not sure if this is a bug, or if it is intended like it is, but I just noticed that DNS queries that are initiated by usage of the site...
From Mastodon: > seems CNAME records don't accept when the second level of a domain contains a hyphen…? This is a valid domain however: ese.fsr-i.de/
You couldn't create a CNAME record begin with a "_" 
You cannot create a CNAME record to point to itself. 
 These are valid domains, but cannot be submitted
SVCB/HTTPS records are nearing RFC status, and are being deployed more widely: https://www.ietf.org/archive/id/draft-ietf-dnsop-svcb-https-08.html Building in support for these types would be very cool and useful!
Cannot sign up to Fastmail using the generated domain. Fastmail requires a domain to be registered first? 
Attempting Experiment 1 or 2 using Chrome Version 99.0.4844.57 (Official Build) (64-bit). This one: https://i.imgur.com/7J8zxuf.png The way to bypass is to use the `thisisunsafe` trick. Had to do it a...
