authns1.alticeusa.com has no NS records.
NS records for this zone are defined at alticeusa.com.
NS records for this zone are defined at alticeusa.com.
Question and response
Question
dig authns1.alticeusa.com. NS
Answer
The response has no answer records.
Authority
alticeusa.com. 900 SOA authns1.cv.net. domain-admin.alticeusa.com. 2017135985 3600 600 604800 900
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0