Required Wistia domains
Other providers like YouTube and Vimeo can be blocked by offices, schools, etc, because the videos hosted on those platforms include “entertainment” content. Our customers’ focus is on business and marketing content, so Wistia is rarely blocklisted.
In situations where all content is blocked, regardless of source, Wistia requires the following domains to be allowlisted:
*.wistia.com
fast.wistia.net
embed-fastly.wistia.com
embed-cloudfront.wistia.com
embedwistia-a.akamaihd.net
*.wistia.net
*.wistia.land
*.akamaized.net
If your organization only allows outbound traffic to specific addresses, hosts and panelists need access to our real-time webinar provider, LiveKit, to join the event room. Have your IT team allow outbound access to the full list of domains, IPs, and ports in LiveKit's firewall configuration guide. This list is updated over time, so allowing the full set means you won't need to make changes later. The following domains should also be allowlisted:
The following domains should be allowlisted for webinar event room functionality:
effectssdk.ai
assets.100ms.live
*.100ms.live
*.livekit.cloud
*.mux.com
For more, see the Firewall and network restrictions section of our Webinar Hosting and Troubleshooting Guide.
If issues persist, have your IT team check for blocked requests.
How to tell if your network is blocking Wistia
Playback issues might be related to your network if:
Videos load on a phone or mobile hotspot, but not on your office or school network.
The player area is blank with no error.
Videos play for some people/locations but not others.
To test this, open the video in your browser and navigate to the "Network" tab in Developer Tools. Then, reload the page and look for failed or blocked requests to wistia.com or the CDN domains above. Send those hostnames to your IT team along with the domain list here.
Tip
This video is not authorized to be embedded here relates to Domain Restriction settings and does not indicate a network or firewall issue. Refer to our Domain Restrictions page for more information.
Firewall and network FAQs
Will attendees on restricted networks be able to watch my webinar?
In most cases, yes. Most corporate networks allow standard web traffic, and attendees watch through the same video delivery network as Wistia videos. Firewall restrictions mostly affect hosts and panelists connecting to the event room. If an attendee can't load the event, have them try a different network or share this article with their IT team.
Why does my security scan show scripts from Mux?
Wistia's player includes Mux Data, a playback-quality monitoring tool that sends anonymous playback health data (like buffering and startup time) so we can improve video delivery. It loads as part of the Wistia player and is not required for playback. Blocking *.litix.io will not stop your videos from playing.
Troubleshooting slow or stalled loading
If a Wistia script (for example, fast.wistia.com/assets/external/channel.js) takes a long time to load or never finishes on your network but works for others:
Test the same page on a mobile hotspot. If it loads, the cause is on your network.
Ask your IT team whether a proxy or SSL/TLS inspection is scanning traffic to
*.wistia.comor*.wistia.net. Inspection can delay or block scripts even when the domains are allowlisted. Excluding Wistia domains from inspection often fixes it.