spf.ejuniper.com has no NS records.
NS records for this zone are defined at ejuniper.com.
NS records for this zone are defined at ejuniper.com.
Question and response
Question
dig spf.ejuniper.com. NS
Answer
The response has no answer records.
Authority
ejuniper.com. 300 SOA ns1-03.azure-dns.com. dns-admin.ejuniper.com. 1 3600 300 2419200 300
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0