_spfblk.goco.ca has no NS records.
NS records for this zone are defined at goco.ca.
NS records for this zone are defined at goco.ca.
Question and response
Question
dig _spfblk.goco.ca. NS
Answer
The response has no answer records.
Authority
goco.ca. 600 SOA dns60.telus.com. dnsadmin2.telus.com. 2025070385 600 7200 3600000 3600
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0