reverse-proxy.n4a.customers.tuxis.net has no CNAME records.
Question and response
Question
dig reverse-proxy.n4a.customers.tuxis.net. NS
Answer
The response has no answer records.
Authority
n4a.customers.tuxis.net. 3600 SOA nssecauth1.tuxis.net. hostmaster.tuxis.net. 2026030501 10800 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0