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A domain configured here points directly at your machine. It is separate from Nerdit’s hosted app address and requires suitable DNS, incoming connectivity, and Engine networking configuration. Read the Engine networking and HTTPS guide first. The App cannot configure your router, DNS provider, or certificate authority settings for you.
1

Open the app's domains

In Machines, select the online machine. Open the manageable app’s … → Domains panel.
2

Add the name

Enter a domain you control, such as app.example.com, and choose Add domain. Wait for the machine to confirm the binding.
3

Follow the DNS guidance

Review the observed address and any suggested A or AAAA record. Make the change at your DNS provider. Use Check again after DNS changes have propagated.
4

Complete HTTPS on the machine

Review the certificate message. Public certificate requests require local Engine administration; the App does not request ACME certificates. Follow the linked HTTPS prerequisites and instructions.
5

Test the application

Open the domain from a separate internet connection and check the application’s actual response and certificate. A DNS match alone does not prove that the app works.

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Interpret a check

Offline means the App cannot manage the machine at that moment. A directly served domain may still be serving requests.

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Release a domain

Choose Release… next to the name and confirm Release. The machine stops serving that binding. Review and remove or update the corresponding DNS record separately; the App does not delete it at your provider.