If you're using Synthesia on a corporate network, you may need to whitelist specific addresses and IPs in your firewall settings to ensure full access to the platform and its features.
Whitelist Synthesia-owned addresses
Ensure that your firewall allows access to all subdomains under:*.synthesia.io
Including, but not limited to:*.api.synthesia.io
app.synthesia.io
cdn.synthesia.io
share.synthesia.io
studio.auth.synthesia.io
help.synthesia.io
image.synthesia.io
*.prd.synthesia.io
*.segment.synthesia.io
security.synthesia.io
Whitelist Amazon Web Services addresses used by Synthesia
cognito-idp.eu-west-1.amazonaws.com
synthesia-ttv-data.s3-eu-west-1.amazonaws.com
Whitelist third-party services required for Synthesia features
These services support core functionality like feature flags, analytics, and email communication:https://app.launchdarkly.com/
https://events.launchdarkly.com/
For persistent feature flag issues, also whitelist IPs listed here: LaunchDarkly IP list
https://public.profitwell.com/
https://www2.profitwell.com/
https://static.vanta.com
https://mandrillapp.com
https://media.gettyimages.com/
http://cdn.soundstripe.com/
Whitelist domains required for share pages and embeds
*.mux.com
*.litix.io
If your issues persist or you have any questions about which addresses to whitelist, please reach out to the Synthesia support team.