How to Set Up an Auth0 Custom Domain

Replace your-tenant.your-region.auth0.com with your own branded login domain! In this tutorial, learn how to configure a custom domain in Auth0 using Namecheap and verify propagation using the terminal. We will also cover mandatory setup requirements—like credit card authorization—and show you how to update your application environment variables (featuring a Ruby on Rails example). What You'll Learn: - Key prerequisites for Auth0 custom domains (Billing setup & session implications) - Setting up CNAME records in Namecheap - Verifying DNS propagation directly from your terminal using dig - Updating app configuration to route authentication traffic through your custom URL Resources & Links: - Full blog post - "Setting Up Auth0 Custom Domains: A Complete Guide to DNS and SDK Configuration": https://auth0.com/blog/custom-domains-complete-guide/ - Auth0 Custom Domain Documentation: https://auth0.com/docs/customize/custom-domains Timestamps: 00:00 - Why use a Custom Domain in Auth0? 00:20 - Prerequisites & Important Session Considerations 01:31 - Adding Billing Info & Configuring Auth0 Custom Domain 02:12 - Configuring CNAME Records in Namecheap 03:00 - Verifying DNS Propagation with the dig Command 03:59 - Change Auth0 Allowed URLs 04:45 - Domain Verification Success & Testing 05:18 - Updating Application Environment Variables (Ruby on Rails Example) 05:41 - Testing the Custom Login Flow & Wrap-up If you enjoy this content and want to learn more about identity, security, and access management, subscribe to our channel! Have a topic you'd like to see covered? Let us know if the comments below 👀 ___________________________________________ 🔵Try Auth0 for free - https://a0.to/auth0 🔵The Auth0 blog - https://a0.to/blog 🔵Ask questions on the Community Forum - https://a0.to/community ___________________________________________ Follow Us on Social 🔵 X / Twitter - https://a0.to/twitter 🔵LinkedIn - https://a0.to/linkedin