spf.protection.rci.rogers.com has no NS records.
NS records for this zone are defined at rogers.com.
NS records for this zone are defined at rogers.com.
Question and response
Question
dig spf.protection.rci.rogers.com. NS
Answer
The response has no answer records.
Authority
rogers.com. 900 SOA pub1-master2-iblox-ym.mgmt.net.rogers.com. cnrbacc.rci.rogers.com. 2017038246 10800 3600 2419200 900
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0