dns3.wisperisp.com has no CNAME records.
Question and response
Question
dig dns3.wisperisp.com. NS
Answer
The response has no answer records.
Authority
wisperisp.com. 2896 SOA dns1.wisperisp.com. hostmaster.wisperisp.com. 2024013596 28800 7200 1209600 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0