Zone apex
Start of authority
Email
Serial
1
Refresh
2h
Retry
15m
Expire
14d
Negative cache TTL
6m
Question and response
Question
dig 192-255.135.137.209.in-addr.arpa. SOA
Answer
192-255.135.137.209.in-addr.arpa. 900 SOA ns-1278.awsdns-31.org. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 360
Authority
192-255.135.137.209.in-addr.arpa. 172800 NS ns-1016.awsdns-63.net.
192-255.135.137.209.in-addr.arpa. 172800 NS ns-1278.awsdns-31.org.
192-255.135.137.209.in-addr.arpa. 172800 NS ns-1989.awsdns-56.co.uk.
192-255.135.137.209.in-addr.arpa. 172800 NS ns-248.awsdns-31.com.
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0