Question and response
Question
dig spf.iai-sa.com. NS
Answer
spf.iai-sa.com. 3600 NS dns2.iai-system.com.
spf.iai-sa.com. 3600 NS dns1.iai-system.com.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0