ns.interhost.com has no NS records.
NS records for this zone are defined at interhost.com.
NS records for this zone are defined at interhost.com.
Question and response
Question
dig ns.interhost.com. NS
Answer
The response has no answer records.
Authority
interhost.com. 3600 SOA ns.interhost.com. hostmaster.mad.interhost.com. 2026021050 7200 1800 1209600 10799
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0