ns1.ptsi.net has no CNAME records.
Question and response
Question
dig ns1.ptsi.net. NS
Answer
The response has no answer records.
Authority
ptsi.net. 3107 SOA ns.ptsi.net. noc.ptci.net. 2026030323 10800 3600 604800 38400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0