# \*.cdn.prod.atlassian-dev.net domain network blocks

**URL:** <https://community.developer.atlassian.com/t/cdn-prod-atlassian-dev-net-domain-network-blocks/96394>\
**Category:** Forge\
**Created:** [October 24, 2025, 2:51pm UTC](https://community.developer.atlassian.com/t/cdn-prod-atlassian-dev-net-domain-network-blocks/96394 "2025-10-24T14:51:54Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![daviddrawio](https://sea1.discourse-cdn.com/atlassiandeveloper/user_avatar/community.developer.atlassian.com/daviddrawio/32/42614_2.png) [@daviddrawio](https://community.developer.atlassian.com/u/daviddrawio)\
**Post date:** [October 24, 2025, 2:51pm UTC](https://community.developer.atlassian.com/t/cdn-prod-atlassian-dev-net-domain-network-blocks/96394/1 "2025-10-24T14:51:54Z")

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We’re seeing widespread problems amongst larger users not knowing that \*.cdn.prod.atlassian-dev.net is required to allow forge apps to run. I know [IP addresses and domains for Atlassian cloud apps | Atlassian Support](https://support.atlassian.com/organization-administration/docs/ip-addresses-and-domains-for-atlassian-cloud-products/) includes it, but users are not aware of it.

It’s causing users significant levels of distruption.

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**Author:** ![JasonRittenhouse](https://avatars.discourse-cdn.com/v4/letter/j/d26b3c/32.png) [@JasonRittenhouse](https://community.developer.atlassian.com/u/JasonRittenhouse)\
**Post date:** [November 5, 2025, 6:26pm UTC](https://community.developer.atlassian.com/t/cdn-prod-atlassian-dev-net-domain-network-blocks/96394/2 "2025-11-05T18:26:47Z")

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Hi, this has affected our users for a couple days now. Is communication going out about this? Why weren’t users notified about it ahead of time?

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**Author:** ![SeanBourke](https://sea1.discourse-cdn.com/atlassiandeveloper/user_avatar/community.developer.atlassian.com/seanbourke/32/48320_2.png) [@SeanBourke](https://community.developer.atlassian.com/u/SeanBourke)\
**Post date:** [November 25, 2025, 4:49am UTC](https://community.developer.atlassian.com/t/cdn-prod-atlassian-dev-net-domain-network-blocks/96394/3 "2025-11-25T04:49:05Z")

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Hey both,

Thanks for sharing - @daviddrawio you’re correct, some users who have applied network-level whitelisting may have applied it before this was required, or have missed this. We have documented it on our [IP addresses and domains for Atlassian cloud apps](https://support.atlassian.com/organization-administration/docs/ip-addresses-and-domains-for-atlassian-cloud-products/) to raise awareness of this.

Conversely, this isn’t well communicated in our Connect to Forge and Forge documentation - we’ll be exploring how we can better communicate this requirement so partners and developers are aware that this may occur.