ns1.tmpw.net has no CNAME records.
Question and response
Question
dig ns1.tmpw.net. NS
Answer
The response has no answer records.
Authority
tmpw.net. 600 SOA ns1.tmpw.net. hostmaster.tmpw.net. 1771829403 1800 600 604800 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0