A comprehensive guide to configuring custom domains in Auth0, from DNS setup with Namecheap or Squarespace to updating your application code for SDKs and APIs

Auth0's platform is a  identity management solution, offering insights into authentication, authorization, and user management for web and mobile applications. Through articles, tutorials, and documentation, Auth0 offers insights into securing applications with modern identity protocols like OAuth and OpenID Connect. Developers can learn about implementing single sign-on (SSO), multi-factor authentication (MFA), and user authorization policies to enhance application security and user experience.

Auth0

Auth0 custom domains let users authenticate on your branded domain instead of the default Auth0 domain. This guide walks through the complete setup: configuring DNS records with providers like Namecheap or Squarespace, verifying the domain in Auth0, and updating SDK configurations in your application code. Key considerations include session invalidation (all users get logged out), social provider credential requirements, and token issuer changes. The process applies to all Auth0 SDKs by updating the domain parameter, though examples use Python/FastAPI.

Setting Up Auth0 Custom Domains: DNS and SDK Configuration

Common Errors and Troubleshooting the DNS Configuration

Important Considerations for Custom Domains

Testing Your Changes After Setting Up a Custom Domain