3.subnet0.143.19.65.in-addr.arpa has no NS records.
NS records for this zone are defined at subnet0.143.19.65.in-addr.arpa.
NS records for this zone are defined at subnet0.143.19.65.in-addr.arpa.
Question and response
Question
dig 3.subnet0.143.19.65.in-addr.arpa. NS
Answer
The response has no answer records.
Authority
subnet0.143.19.65.in-addr.arpa. 86400 SOA ns1.heliohost.org. ashoat.gmail.com. 2013120707 43200 7200 1209600 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0