Zone apex
Start of authority
Email
Serial
1
Refresh
2h
Retry
15m
Expire
14d
Negative cache TTL
1d
Question and response
Question
dig mail2000.com.tw. SOA
Answer
mail2000.com.tw. 3600 SOA ns-183.awsdns-22.com. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400
Authority
mail2000.com.tw. 172800 NS ns-1531.awsdns-63.org.
mail2000.com.tw. 172800 NS ns-183.awsdns-22.com.
mail2000.com.tw. 172800 NS ns-1848.awsdns-39.co.uk.
mail2000.com.tw. 172800 NS ns-719.awsdns-25.net.
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0