dig SOA — Start of Authority QuerySOA = "Start Of Authority".
It tells you who owns the zone and how DNS replication works.
dig soa www.inlanefreight.com
You got:
AUTHORITY SECTION:
inlanefreight.com. 900 IN SOA ns-161.awsdns-20.com. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400
This tells you:
| Field | Meaning |
|---|---|
ns-161.awsdns-20.com |
Primary DNS server (master) |
awsdns-hostmaster.amazon.com |
Admin email |
1 |
Serial number |
7200 |
Refresh time |
900 |
Retry time |
1209600 |
Expire time |
86400 |
Minimum TTL |
dig NS — Name Server Query