oflibzd02.ext.ti.com has no CNAME records.
Question and response
Question
dig oflibzd02.ext.ti.com. NS
Answer
The response has no answer records.
Authority
ext.ti.com. 248 SOA oqdibfd.itg.ti.com. hostmaster.ti.com. 2013107773 300 300 2419200 300
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0