_spf.noip.com has no NS records.
NS records for this zone are defined at noip.com.
NS records for this zone are defined at noip.com.
Question and response
Question
dig _spf.noip.com. NS
Answer
The response has no answer records.
Authority
noip.com. 1800 SOA ns2.no-ip.com. hostmaster.no-ip.com. 2023082180 10800 1800 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0