ns1.spf.dnssmarthost.net has no NS records.
NS records for this zone are defined at spf.dnssmarthost.net.
NS records for this zone are defined at spf.dnssmarthost.net.
Question and response
Question
dig ns1.spf.dnssmarthost.net. NS
Answer
The response has no answer records.
Authority
spf.dnssmarthost.net. 86400 SOA ns1.spf.dnssmarthost.net. admins.siteground.com. 9125022 86400 7200 3600000 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0