ns2a.rit.edu has no CNAME records.
Question and response
Question
dig ns2a.rit.edu. NS
Answer
The response has no answer records.
Authority
rit.edu. 3180 SOA ns1a.rit.edu. root.rit.edu. 140153965 3600 600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0