Question and response
Question
dig mktosender.com. NS
Answer
mktosender.com. 86400 NS ns2.mktdns.com.
mktosender.com. 86400 NS ns1.marketo.com.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0