cr35.mc.pd25.com has no NS records.
NS records for this zone are defined at pd25.com.
NS records for this zone are defined at pd25.com.
Question and response
Question
dig cr35.mc.pd25.com. NS
Answer
The response has no answer records.
Authority
pd25.com. 600 SOA dns1.p05.nsone.net. hostmaster.nsone.net. 1662755028 3600 600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0