r.rg.net has no CNAME records.
Question and response
Question
dig r.rg.net. NS
Answer
The response has no answer records.
Authority
rg.net. 10800 SOA rip.psg.com. hostmaster.psg.com. 1772681400 86400 3600 2592000 14400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0