This example shows how to do a custom 404 page in Next.js that can be personalized based on the host.

Getting Started

First, run the development server:

npm run dev
# or
yarn dev
# or
pnpm dev
# or
bun dev

Open http://localhost:3000 with your browser to see the result.

To test the 404, visit any page other than /. The 404 will show the host in its HTML.

You can visit the following URLs to see the example in action:

• https://nextjs-custom-404-multi-host.vercel.app/unknown
• https://nextjs-custom-404-multi-host-a.vercel.app/unknown
• https://nextjs-custom-404-multi-host-b.vercel.app/unknown

Learn More

To learn more about Next.js, take a look at the following resources:

• Next.js Documentation - learn about Next.js features and API.
• Learn Next.js - an interactive Next.js tutorial.

You can check out the Next.js GitHub repository - your feedback and contributions are welcome!

Deploy on Vercel

The easiest way to deploy your Next.js app is to use the Vercel Platform from the creators of Next.js.

Check out our Next.js deployment documentation for more details.