153.subnet128.153.71.64.in-addr.arpa has no NS records.
NS records for this zone are defined at subnet128.153.71.64.in-addr.arpa.
NS records for this zone are defined at subnet128.153.71.64.in-addr.arpa.
Question and response
Question
dig 153.subnet128.153.71.64.in-addr.arpa. NS
Answer
The response has no answer records.
Authority
subnet128.153.71.64.in-addr.arpa. 86400 SOA udns1.ultradns.net. ernest.aldama.activant.com. 2009031827 10800 3600 2592000 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0