Zone apex
Start of authority
Email
Serial
2011131199
Refresh
4h
Retry
1h
Expire
28d
Negative cache TTL
5m
Question and response
Question
dig dns4.mastercard.com. SOA
Answer
The response has no answer records.
Authority
mastercard.com. 300 SOA dns1.mastercard.com. hostmaster.mastercard.com. 2011131199 14400 3600 2419200 300
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0