Deployment URLs

A deployment is always associated with a unique URL, that has the following fundamental components:

  • The deployment subdomain, made up of:

    • The deployment name
    • A UID
  • The deployment suffix, which defaults to but is customizable with the custom domain suffix add-on

A breakdown of a Now deployment URL structure.


The subdomain can be at most 63 characters.

Deployment name

When a deployment is created, it must supply a name. If the user doesn't explicitly provide one, Now CLI will use the directory name.

The name can take up, at most, 53 characters. It is always followed by a dash -.

UID (Unique identifier)

The UID is derived from a large cryptographically random number encoded as 9 alphanumeric characters.


The default suffix for all deployments is It's registered with Mozilla's Public Suffix List.

For enhanced isolation and security, we recommend configuring a custom domain suffix.