Netlify Subdomain Checker — Check Up to 5 Names at Once
Enter up to 5 subdomain names (one per line). Spaces become hyphens. Your site will be at yourname.netlify.app.
One name per line. Spaces become hyphens. Only lowercase letters, numbers and hyphens are kept. Max 5 per check.
Suggested variations (click to add)
Netlify subdomains only allow lowercase letters, numbers and hyphens. No underscores or dots.
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Check All Platforms at OnceWhat is a Netlify subdomain?
When you deploy a site on Netlify, you can claim a free subdomain at
yourname.netlify.app.
This subdomain is the public address for your site and is available immediately
after you create a Netlify team and choose your site name. You can use it as a
permanent address or as an interim URL while you connect a custom domain.
Netlify is one of the most widely used platforms for deploying static sites, Jamstack
apps, Next.js, Gatsby, Hugo, and serverless functions. The
netlify.app domain
has strong authority, and sites deployed on Netlify are served over a global CDN
with HTTPS enabled automatically. Choosing a clean, memorable subdomain matters
both for sharing your site during development and for SEO if you plan to use the
Netlify URL as a permanent address.
Netlify subdomain rules
- → Length: Between 2 and 63 characters (the DNS label limit).
- → Allowed characters: Lowercase letters (a-z), numbers (0-9), and hyphens (-). No underscores, dots, spaces, or uppercase letters.
- → Start and end: Must start and end with a letter or number. A hyphen at the start or end of the subdomain is not valid.
- → Uniqueness: Netlify subdomain names are unique across all Netlify accounts globally. Once a subdomain is claimed, it cannot be used by any other site on the platform.
- → Changes: You can change a Netlify site's subdomain from the site settings in your Netlify dashboard. The old subdomain is released immediately and can be claimed by someone else. Any links using the old URL will stop working.
- → Per site: Each Netlify site has one subdomain. If you deploy multiple sites, each needs a distinct subdomain name.
Tips for choosing a Netlify subdomain
acme-dashboard.netlify.app. When you share the link with clients or teammates during development, a descriptive subdomain avoids confusion with other projects and looks more professional than an auto-generated random name.mybrand-app.netlify.app for production and mybrand-staging.netlify.app for staging keeps URLs predictable. Check availability for both names at once using this tool.Why Netlify is a top choice for deploying modern web projects
Netlify pioneered the Jamstack deployment model and remains one of the most developer-friendly hosting platforms available. Its combination of Git-based continuous deployment, a global CDN, automatic HTTPS, and serverless functions in a single workflow makes it the default choice for many frontend developers and teams building modern web applications.
netlify.app subdomain gets HTTPS immediately, with no configuration needed.Netlify vs Vercel: which platform should you choose?
Netlify and Vercel are the two leading Jamstack deployment platforms and are often compared directly. Both offer free tiers, Git-based deployment, global CDNs, and serverless functions. The differences come down to framework support, team features, and workflow preferences.
Vercel has deeper native support for Next.js (which Vercel created) and is generally preferred for Next.js projects. Netlify has broader framework support out of the box and is often preferred for sites built with Gatsby, Hugo, Eleventy, Astro, and other static site generators. Netlify's form handling and identity features are also more mature for non-Next.js projects.
For most projects, either platform works well. The practical consideration is often which platform your team already uses or which integrates better with your existing workflow. Securing your preferred subdomain name on both platforms is a simple way to keep your options open.
Frequently asked questions
Yes. You can run up to 5 checks per day at no cost. Each check can include up to 5 subdomain names at once, giving you 25 Netlify subdomain checks per day in total.
Very accurate. When a Netlify subdomain is not registered, Netlify serves a specific system error page with identifiable content. This tool checks for that content to determine availability. A result of "Available" means Netlify's system confirms no site is registered at that subdomain. A result of "Unknown" means the check could not be completed and you should verify by visiting the URL directly.
Create a Netlify account (free), create a new site, and then go to Site Settings, rename the site, and enter your preferred subdomain name. Netlify auto-generates a random name when you first create a site, so you need to rename it to claim your preferred subdomain.
Yes. Go to your Netlify dashboard, select your site, then Site Settings, and look for the site name setting. You can change the subdomain at any time. The old subdomain is released immediately and becomes available for others to claim. Any existing links using the old URL will stop working, so update them before changing the name if they are in use.
Yes. Netlify's free Starter plan includes 100GB of bandwidth per month, 300 build minutes per month, unlimited static site deployments, and one concurrent build. This is sufficient for most personal projects, portfolio sites, and small applications. Paid plans (Pro, Business, Enterprise) unlock more bandwidth, more concurrent builds, team collaboration features, and higher function invocation limits.
It depends on your goals. For a permanent site that you want to rank on Google, a custom domain on your own brand name is always the stronger long-term investment because all backlinks and rankings accrue to your domain. For side projects, internal tools, or sites where SEO is not a priority, the netlify.app subdomain works fine and the domain's authority can help new content get indexed quickly.