Zone apex
Start of authority
Email
Serial
1
Refresh
2h
Retry
15m
Expire
14d
Negative cache TTL
1d
Question and response
Question
dig _spf0000004.tangocard.com. SOA
Answer
_spf0000004.tangocard.com. 900 SOA ns-1956.awsdns-52.co.uk. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400
Authority
_spf0000004.tangocard.com. 172800 NS ns-1400.awsdns-47.org.
_spf0000004.tangocard.com. 172800 NS ns-1956.awsdns-52.co.uk.
_spf0000004.tangocard.com. 172800 NS ns-334.awsdns-41.com.
_spf0000004.tangocard.com. 172800 NS ns-775.awsdns-32.net.
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0