MCMC/SKMM DNS Blocks - CDNs Affected

AAY — Fri, 24 Dec 2021 23:03:01 +0800

Is anyone else annoyed that a bunch of CDNs getting blocked by MCMC/SKMM?

I first noticed this last month - I was wondering why a website I visited wasn't loading correctly. It turns out that this site was using a bootstrap template from MaxCDN, and the DNS response for that host was unkindly coerced at the bidding of our dear regulators.

Try it yourself (if you're using a Malaysian ISP's DNS server): maxcdn.bootstrapcdn.com will resolve to 175.139.142.25. If you're using Maxis, you will helpfully see that it resolves to a CNAME of mcmc-redirect.maxis.com.my. If you're not using Maxis you won't see the helpful CNAME and will be wondering for a while why you can't seem to hit that address...

More recently I also found another DNS record that is coerced - polyfill.io (some sites that try to maintain compatibility with browsers that should have stayed dead years ago will still point here...). I saw another thread that also mentioned this from October.

Of course the obvious solution to this is to just not use your ISP's DNS servers, and use an alternative such as Google DNS, Quad9, CloudFlare, etc. I usually use an alternative DNS server but it's not a solution that the typical consumer would know about.

I did try to submit a complaint to MCMC (for the first host), but their complaint form (which is extremely regimented!) doesn't have a category for this sort of complaint so I had to pick the most similar category from the list. Remarkably it got partially unblocked (IPv6 addresses were OK on Maxis, but IPv4 wasn't. TM just returned the bad IPv4 address) the very next day. And then of course the day after that everything went back to normal..ugh.

To try to put a point to this topic, here's a question for everyone/anyone: Has anyone succeeded in getting MCMC/SKMM to unblock a mistakenly blocked site, and if so how did you do it?

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MCMC/SKMM DNS Blocks - CDNs Affected