cwebserv.ark.org has no NS records.
NS records for this zone are defined at ark.org.
NS records for this zone are defined at ark.org.
Question and response
Question
dig cwebserv.ark.org. NS
Answer
The response has no answer records.
Authority
ark.org. 900 SOA ns-515.awsdns-00.net. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0