dns1.sjl.datapipe.net has no CNAME records.
Question and response
Question
dig dns1.sjl.datapipe.net. NS
Answer
The response has no answer records.
Authority
sjl.datapipe.net. 2698 SOA ns1.datapipe.net. hostmaster.datapipe.net. 2016012903 10800 3600 604800 14400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0