spf.prod.lanyonemail.com has no NS records.
NS records for this zone are defined at lanyonemail.com.
NS records for this zone are defined at lanyonemail.com.
Question and response
Question
dig spf.prod.lanyonemail.com. NS
Answer
The response has no answer records.
Authority
lanyonemail.com. 3601 SOA dns1.registrar-servers.com. hostmaster.registrar-servers.com. 1770826096 43200 3600 604800 3601
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0