New posts in Domain Name System

How to simulate DNS server response timeout?

I changed my TTL from 24 hours to 5 minutes. Do I need to wait 24 hours before changing the records?

How can I resolve DNS problems somewhere in the middle of recursion?

What is happening with g.root-servers.net.?

Do I need a separate SSL certificate for a DNS redirect?

Published SRV records pointing to CNAME alias in violation of RFC 2782?

Why don't NS records contain IP addresses?

RFC that requires DNS servers to respond to unknown domain requests

Why would a university block incoming UDP traffic with destination port 53?

"SOA Serial Number Format is Invalid" warning by mxtoolbox.com - why?