mapfrespf.iblhelper.net has no CNAME records.
Question and response
Question
dig mapfrespf.iblhelper.net. NS
Answer
The response has no answer records.
Authority
iblhelper.net. 3600 SOA makemake.iberlayer.com. admin.iberlayer.com. 2026021702 3600 1800 1209600 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0