pppoe2.ipv6.globcom.net has no CNAME records.
Question and response
Question
dig pppoe2.ipv6.globcom.net. NS
Answer
The response has no answer records.
Authority
globcom.net. 681 SOA dns1.globcom.net. admin.globcom.net. 202201122 28800 7200 86400 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0