salesforce.icann.org has no CNAME records.
Question and response
Question
dig salesforce.icann.org. NS
Answer
The response has no answer records.
Authority
icann.org. 3600 SOA sns.dns.icann.org. noc.dns.icann.org. 2026022828 10800 3600 1209600 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0