Zone apex
Start of authority
Email
Serial
2017021500
Refresh
2h
Retry
15m
Expire
14d
Negative cache TTL
1d
Question and response
Question
dig mailserver-od.com. SOA
Answer
mailserver-od.com. 900 SOA ns-1485.awsdns-57.org. dnsadmin.socketlabs.com. 2017021500 7200 900 1209600 86400
Authority
mailserver-od.com. 172800 NS ns-137.awsdns-17.com.
mailserver-od.com. 172800 NS ns-1485.awsdns-57.org.
mailserver-od.com. 172800 NS ns-1589.awsdns-06.co.uk.
mailserver-od.com. 172800 NS ns-884.awsdns-46.net.
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0