stimson.state.gov has no CNAME records.
Question and response
Question
dig stimson.state.gov. NS
Answer
The response has no answer records.
Authority
state.gov. 304 SOA o-bimc-dns001.grid.state.sbu. hostmaster.state.gov. 78852 10800 1080 2419200 900
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0