School is having trouble resolving videos

Hello, we have a school that is having trouble resolving videos. Do you have a comprehensive list of domains/ips that the school would need to whitelist?

We tried having them whitelist and and still cannot play the videos. I’m imagining there are more domains/ips in the chain that are causing this issue.

Hi michael,
I am Thomas from infrastructure team at
Could you give me the video link that you are trying to view, so I can have an exhaustive answer for you.

If you want to have the method to do it on your side, you may have a look at your navigator developper’s tools (CTRL-SHIFT-I) while trying to watch it and look at console for errors.

If it may help, regarding ip address (quite a few since we are talking about Content Delivery Network) here are all the ip range that can be part of the delivery chain

Hi Michael,

When I test my video, and look at all the domains I hit, there are 4 total:

However, & are not required. If I “black hole” them (a trick sending those requests to a dead end),

the video still plays with the 2 you have whitelisted.

So, I do not think that the domains are the issue.


Did the school resolve this issue?


Hey Doug,

Sorry for the lack of an update. The IT guy needed additional help from their network admin. I don’t believe it had anything to do with the resolution on your end. Unfortunately I don’t know if they were able to solve it since we haven’t heard back from them.