Question and response
Question
dig d2.itctel.com. RRSIG
Answer
The response has no answer records.
Authority
d2.itctel.com. 5 SOA ns1.itctel.com. techadm.itctel.com. 2018062501 3600 600 1209600 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0