spf1.aureon.com has no NS records.
NS records for this zone are defined at aureon.com.
NS records for this zone are defined at aureon.com.
Question and response
Question
dig spf1.aureon.com. NS
Answer
The response has no answer records.
Authority
aureon.com. 3600 SOA ns1d.aureon.com. hostmaster.netins.net. 2017103601 1800 3000 604800 86400
Additional
. 0 OPT ; payload 1220, xrcode 0, version 0, flags 0