Question and response
Question
dig mx.crescentgroupltd.com. NSEC
Answer
The response has no answer records.
Authority
crescentgroupltd.com. 3600 SOA dns.crescentgroupltd.com. hostmaster.crescentgroupltd.com. 1305049791 43200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0