warehouse.usmd.edu has no CNAME records.
Question and response
Question
dig warehouse.usmd.edu. NS
Answer
The response has no answer records.
Authority
USMD.EDU. 1300 SOA ns.usmd.edu. hostmaster.ns.usmd.edu. 2026021303 7200 300 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0