spftb.webnode.com has no NS records.
NS records for this zone are defined at webnode.com.
NS records for this zone are defined at webnode.com.
Question and response
Question
dig spftb.webnode.com. NS
Answer
The response has no answer records.
Authority
webnode.com. 900 SOA ns-1517.awsdns-61.org. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0