ns3.ascio.com has no CNAME records.
Question and response
Question
dig ns3.ascio.com. NS
Answer
The response has no answer records.
Authority
ascio.com. 145 SOA ns1.tucows.com. hostmaster.tucows.com. 1771986075 1800 900 604800 300
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0