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by koytch 3562 days ago
Strange to see reddit and stackoverflow not supporting IPv6.
1 comments

AWS doesn't support IPv6 natively. I believe this explains a bunch of the items on that list (though not SO, I think they're on Azure?)
And as Microsoft, Bing and MSN don't support IPv6, you can assume that Azure does not as well. And it does not, despite the BS story about their leading role:

https://azure.microsoft.com/en-us/pricing/faq/

Microsoft.com does support IPv6 (Bing and MSN do not).

Also apple.com does support IPv6.

It appears apple.com and microsoft.com are failing this for the same reason; apple.com does not have an AAAA record. www.apple.com does. If you visit apple.com over ipv4 or dualstack, apple.com will answer and redirect you to www.apple.com, which is dual-stacked. But if you visit using only ipv6, apple.com is not found, so you're never redirected to the capable www.apple.com.

(ditto s/apple/microsoft/ - I just picked the example quickest to type)

SO hosts on their own infrastructure, and I believe use Akamai for CDN.

https://nickcraver.com/blog/2016/02/17/stack-overflow-the-ar...