poptest.shm200.egg.jp has no CNAME records.
Question and response
Question
dig poptest.shm200.egg.jp. NS
Answer
The response has no answer records.
Authority
shm200.egg.jp. 3600 SOA ns01.idcfcloud.com. dns-support.idc.jp. 288 10800 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0