Notes for Computer Information Technology 160
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.

oct24-dns-directory.md 828B

October 24 - DNS Directory

Overview

SOA
MX
A
CNAME
PTR
TXT "-spf"

DNS directory

”.” is the root “/” of dns

Some Top Level Domains are .com and .edu

.com.google = google.com

.edu.cun.library = library.csun.edu

The registrar that has authority of the .edu top level domain registers “csun” but not “library”

Every domain has a Start of Authority or SOA record in its Zone File

$ cat zone.txt

~SOA~
example.com.  IN  A     192.0.2.1    ; IPv4 address for example.com
www           IN  CNAME example.com. ; www.example.com is an alias for example.com

130.166.38.0

.arpa.in-addr.130.166.38.0

this is in a zone file on ns-38