syn-047-046-252-050.biz.spectrum.com has no CNAME records.
Question and response
Question
dig syn-047-046-252-050.biz.spectrum.com. NS
Answer
The response has no answer records.
Authority
biz.spectrum.com. 8786 SOA auth1.charter.com. hostmaster.charter.com. 2019215137 7200 3600 604800 14400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0