IP Canonicalization Test
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Check whether your raw IP address redirects to your canonical domain. We resolve your IP, request the site directly, and confirm whether the server consolidates to one address the way search engines prefer.
Enter your domain to run the test:
How the Test Works
- Resolve the IP, your domain is looked up to its A record.
- Request by IP, our server fetches the site directly by the raw IP.
- Inspect the response, we check for a redirect to your domain.
- Report the result, you get a pass or a clear fix recommendation.
Why It Matters
- One canonical home, signals consolidate to your domain, not an IP.
- Avoid duplicate content, prevents the same site indexing twice.
- Cleaner analytics, traffic is attributed to the proper hostname.
- Better hygiene, a tidy redirect setup signals a well-run site.
Next steps
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IP Canonicalization Test: FAQ
What is IP canonicalization?
IP canonicalization means your server redirects requests made to your raw IP address to your canonical domain name. Without it, the same site can be reached at both the IP and the domain, which can create duplicate-content and security concerns.
What does this test do?
It resolves your domain to its IP address, requests the site by that raw IP over HTTP, and checks whether the server issues a redirect to your canonical domain. It then reports whether IP canonicalization passes or needs fixing.
Why does IP canonicalization matter for SEO?
If your content is reachable at both an IP and a domain, search engines may see two copies of the site. A redirect from the IP to the domain consolidates signals to one canonical address and avoids accidental duplicate indexing.
How do I fix a failing IP canonicalization test?
Configure your web server or CDN to 301 redirect requests with an IP Host header, or requests without a valid domain Host header, to your canonical domain. On Nginx use a default server block; on Apache use a catch-all VirtualHost.
Is it always a problem if the IP does not redirect?
Not always. Many hosts and CDNs serve a default page or block raw IP access, and shared IPs cannot map to one domain. The test is most relevant for dedicated IPs where the same content answers on both addresses.
Does this work with shared hosting or a CDN?
On shared hosting or behind a CDN, the IP is often shared across many sites, so a raw IP request may return a generic page or an error rather than your site. That is usually fine and not a canonicalization issue.
Is the test safe to run?
Yes. It only resolves your domain and makes a single read-only request to the public IP. Private and internal addresses are blocked for safety.
Is this IP canonicalization test free?
Yes. It is free, requires no signup, and works on any public domain.
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