DNS details

Here, finally, we get to the actual "guts" of what makes a domain name actually "light up" on the internet: the DNS details, such as the nameserver delegation and its DNSSEC status.

The nameserver delegation is the set of authoritative nameservers for the domain. The nameservers listed here are the ones that will receive and respond to all DNS queries for the subject domain name. Most of this book is concerned with operating these types of nameservers while minimizing mental anguish; that is, sysadmin angst or "blood in the streets"-style DNS outages.