www.ph.cox.net has no CNAME records.
Question and response
Question
dig www.ph.cox.net. NS
Answer
The response has no answer records.
Authority
ph.cox.net. 2382 SOA dukensumpov1z.services.cox.net. hostmaster.cox.net. 781212989 28800 7200 604800 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0