standard4.encirca.net has no CNAME records.
Question and response
Question
dig standard4.encirca.net. NS
Answer
The response has no answer records.
Authority
encirca.net. 1397 SOA standard3.encirca.net. dnsmaster.encirca.com. 2026022601 10800 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0