mail.technologypartner.visa.com has no CNAME records.
Question and response
Question
dig mail.technologypartner.visa.com. NS
Answer
The response has no answer records.
Authority
visa.com. 492 SOA lloyd.ns.cloudflare.com. dns.cloudflare.com. 2397080314 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0