The recent DNS outage caused me to lose access to the Stack Exchange network. Being a good little programmer, I tried to work around the problem:
$ wget --spider stackoverflow.com Connecting to stackoverflow.com (stackoverflow.com)|126.96.36.199|:80... connected.
So currently for me Stack Overflow is 188.8.131.52. However Stack Exchange does not allow direct IP access:
Fastly error: unknown domain: 184.108.40.206. Please check that this domain has been added to a service.
This is also true for Super User and perhaps others. I would like to see this corrected, as other major sites like Google, GitHub and Facebook do allow direct IP access.