Question and response
Question
dig mx.eng.umd.edu. NSEC
Answer
The response has no answer records.
Authority
eng.umd.edu. 300 SOA blox.net.umd.edu. hostmaster.eng.umd.edu. 2023229727 14400 3600 2419200 300
Additional
. 0 OPT ; payload 1220, xrcode 0, version 0, flags 0