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Default app domain name and DNS targets updated for Fir-generation apps
Change effective on 12 March 2025
Heroku has implemented improvements to DNS management for the Fir-generation, and all new Fir apps utilize sharded DNS zones which will have the new domain format of the following: <haiku>.<regional-haiku>.herokuapp.com
. For example:example-app-1234567890ab.redwood-oregon.herokuapp.com
Similarily, Fir Private Spaces apps now use <haiku>.<regional-haiku>.herokudns.com
for DNS targets.
While your app is available at your default domain, we strongly recommend adding a custom domain to production apps. You can view your updated DNS targets with the heroku domains
command. See View existing domains for details.