dns3.nettigritty.com has no CNAME records.
Question and response
Question
dig dns3.nettigritty.com. NS
Answer
The response has no answer records.
Authority
nettigritty.com. 128 SOA dns1.nettigritty.com. nettigritty.nettigritty.com. 2025110701 3600 7200 1209600 600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0