ns2.parabolanet.com has no CNAME records.
Question and response
Question
dig ns2.parabolanet.com. NS
Answer
The response has no answer records.
Authority
parabolanet.com. 10800 SOA ns1.parabolanet.com. root.parabolanet.com. 20181259 28800 3600 604800 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0