Zone apex
Start of authority
Email
Serial
2016062081
Refresh
3h
Retry
1h
Expire
7d
Negative cache TTL
5m
Question and response
Question
dig mx1.emailsrvr.com. SOA
Answer
mx1.emailsrvr.com. 28800 SOA pdns219.ultradns.com. postmaster.emailsrvr.com. 2016062081 10800 3600 604800 300
Authority
mx1.emailsrvr.com. 3600 NS ns.rackspace.com.
mx1.emailsrvr.com. 3600 NS ns2.rackspace.com.
mx1.emailsrvr.com. 3600 NS pdns219.ultradns.biz.
mx1.emailsrvr.com. 3600 NS pdns219.ultradns.com.
mx1.emailsrvr.com. 3600 NS pdns219.ultradns.net.
mx1.emailsrvr.com. 3600 NS pdns219.ultradns.org.
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0