mail.calixtaondemand.com has no NS records.
NS records for this zone are defined at calixtaondemand.com.
NS records for this zone are defined at calixtaondemand.com.
Question and response
Question
dig mail.calixtaondemand.com. NS
Answer
The response has no answer records.
Authority
calixtaondemand.com. 1800 SOA cruz.ns.cloudflare.com. dns.cloudflare.com. 2397967207 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0