custdkim.salesforce.com CNAME DNS records

CNAME Canonical name

Apex domains cannot have CNAME records.

Question and response

Question

dig custdkim.salesforce.com. NS

Answer

custdkim.salesforce.com. 5 NS pch1.salesforce-dns.com. custdkim.salesforce.com. 5 NS udns1.salesforce.com. custdkim.salesforce.com. 5 NS udns3.salesforce.com. custdkim.salesforce.com. 5 NS udns2.salesforce.com. custdkim.salesforce.com. 5 NS pch2.salesforce-dns.com. custdkim.salesforce.com. 5 NS udns4.salesforce.com.

Authority

The response has no authority records.

Additional

udns1.salesforce.com. 5 A 156.154.100.8 udns2.salesforce.com. 5 A 156.154.101.8 udns3.salesforce.com. 5 A 156.154.102.8 udns4.salesforce.com. 5 A 156.154.103.8 udns1.salesforce.com. 5 AAAA 2001:502:2eda:0:0:0:0:8 udns2.salesforce.com. 5 AAAA 2001:502:ad09:0:0:0:0:8 udns3.salesforce.com. 5 AAAA 2610:a1:1009:0:0:0:0:8 udns4.salesforce.com. 5 AAAA 2610:a1:1010:0:0:0:0:8 . 0 OPT ; payload 1232, xrcode 0, version 0, flags 0