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April 19, 2026 · Snapdock

How Do I Connect a Custom Domain to My App?

You deployed your app to Vercel, Netlify, or Railway using Claude, ChatGPT, Cursor, or Bolt, and you got a URL like yourapp.vercel.app. It works. But you want…

You deployed your app to Vercel, Netlify, or Railway using Claude, ChatGPT, Cursor, or Bolt, and you got a URL like yourapp.vercel.app. It works. But you want it to say yourcompany.com instead. A custom domain makes your app look real, professional, and permanent. This post explains exactly how to buy a domain, point it at your app, and get the whole thing working without needing a developer.

The process has three steps. Here they are.

Step 1: Buy Your Domain

A domain name costs around $10-15 per year. The two most beginner-friendly registrars are Namecheap and Porkbun. Both have clean interfaces, honest pricing, and no predatory upsells.

Go to namecheap.com or porkbun.com, search for the domain you want, and buy it.

A few things to know before you buy:

.com is still the most trusted extension. If yourname.com is available, buy it. If not, .ai and .io are both widely accepted for tech products. Avoid obscure extensions like .biz or .info.

Buy only the domain. During checkout you will be offered email hosting, privacy protection bundles, SSL certificates, and website builders. Skip all of them. Your hosting platform provides SSL for free. You do not need the rest.

Check the renewal price. Some registrars offer a cheap first year and then charge significantly more on renewal. Namecheap and Porkbun are both honest about renewal pricing upfront.

Step 2: Point Your Domain at Your App

Once you have bought your domain you need to tell it where your app lives. This is done through DNS settings, which sounds technical but is just a form you fill in.

Here is how to do it on the most common hosting platforms:

Vercel:

  1. Go to your project in Vercel
  2. Click Settings, then Domains
  3. Type your domain name and click Add
  4. Vercel will show you two DNS records to add, usually a CNAME record and an A record
  5. Go to your domain registrar, find DNS settings, and add those records exactly as shown

Netlify:

  1. Go to your site in Netlify
  2. Click Domain Management, then Add Custom Domain
  3. Type your domain and click Verify
  4. Netlify will show you nameservers to point your domain at
  5. Go to your registrar, find nameserver settings, and replace the existing nameservers with Netlify’s

Railway:

  1. Go to your service in Railway
  2. Click Settings, then Networking
  3. Click Generate Domain or Custom Domain
  4. Follow the DNS instructions Railway provides

Render:

  1. Go to your service in Render
  2. Click Settings, then Custom Domains
  3. Add your domain and follow the DNS instructions shown

If any of these steps feel unclear, paste the exact instructions your hosting platform shows you into ChatGPT, Claude, or Gemini and ask: “Can you explain exactly how to add these DNS records in Namecheap step by step?” It will walk you through every click.

Step 3: Wait for DNS to Propagate

After adding your DNS records, your domain does not switch over instantly. DNS propagation, which is the process of your domain update spreading across the internet, typically takes between a few minutes and 48 hours. Most updates complete within an hour.

During this time, visiting your domain might show an error, an old page, or nothing at all. This is normal. It is not broken. You just have to wait.

You can check propagation status at whatsmydns.net. Type your domain, select the record type you added, and it shows whether your DNS update has reached servers around the world yet.

Once propagation is complete your app will load at your custom domain, with HTTPS enabled automatically by your hosting platform.

The One Thing to Remember

Connecting a custom domain is three steps: buy the domain, add the DNS records your hosting platform specifies, and wait for propagation. The technical part, adding DNS records, is just copying values from your hosting platform into your registrar’s settings. If the instructions ever feel unclear, paste them into your AI and ask for a step-by-step walkthrough. The whole process takes about fifteen minutes of actual work.

Want your app running at a custom domain without the configuration? → Snapdock

New here? These might help: What is a URL? And how does my app get its own? → Why does my app say “Not Secure” in the browser? →