apple.com DNSSEC status is:
After configuring a domain name for DNSSEC, it is important to check that it working as expected.
Checking the DNSSEC status of a domain name is an easy process, by using the whatsmydns.net domain name DNSSEC checker tool you can quickly and easily see its DNSSEC status.
DNS Security Extensions (DNSSEC) is a new security protocol which was made to overcome some of the shortcomings of the original DNS specification.
When DNS was first introduced, it was not really designed in a way which allowed for good security with all the features of the modern internet. DNSSEC is an extension on top of DNS which is designed to help with this.
In a nutshell, DNSSEC signs all responses at every layer of the DNS lookup process. This includes communication between the root nameservers, TLD nameservers, authoritative nameservers as well as recursive resolvers.
Learn more about DNS Security.
Most domain names are able to have their DNSSEC status checked, however in some cases it may be unable to be confirmed.