[carlsborg]

Looks like this: the affected subdomains are CNAMEd to the akamai CDN, and the Nameserver for those are/were down.

So for example:

Top level domain for nvidia resolved fine..

dig @1.1.1.1 nvidia.com => status: NOERROR, Nameservers are ns6.dnsmadeeasy.com

But the website didnt. dig @1.1.1.1 www.nvidia.com => status: SERVFAIL,

The Nameserver for the this www.nvidia resolved to the akamai nameserver which had a problem..

dig @1.1.1.1 www.nvidia.com NS => CNAME e33907.a.akamaiedge.net.