Question and response
Question
dig mx11.service-now.com. PTR
Answer
The response has no answer records.
Authority
service-now.com. 60 SOA edns140.ultradns.com. root.service-now.com. 5473114 900 1800 31536000 3600
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0