Why does Google still show the old domain after a year of 301 redirection?

What actually happens when searching for a redirected old domain?

When you type the exact URL of an old domain into the Google search bar, you force the engine to look for that precise URL. Google will then display it in the results, even if it has been redirecting to a new domain for a long time.

This situation creates a frequent confusion among SEO practitioners who interpret this display as evidence that the migration has not worked. In reality, you are creating an artificial context: no real user searches for your old domain in this way.

What is the difference between a URL search and organic appearance?

Searching for a specific URL (branded search) triggers a particular behavior of the algorithm. Google recognizes an explicit navigational intent and will display the requested URL, whether it redirects or not.

In typical organic results for your business queries, Google usually displays the new domain after successful consolidation. This visibility is what counts for your actual traffic, not what appears when you voluntarily search for the old address.

How long should a 301 redirect be maintained?

Mueller mentions a duration of one year here, but it is a strict minimum, not a recommendation for maximum duration. In practice, critical redirects often need to remain active for much longer.

Google needs this time to consolidate signals between domains: authority, backlinks, history. Removing a redirect too early can fragment these signals and create 404 errors on external links that you do not control.

• The 301 redirect gradually transfers ranking signals to the new domain
• Explicitly searching for the old domain does not reflect its status in actual organic results
• Check your positions on strategic queries to evaluate the migration
• Keep redirects active for at least 12-18 months, or indefinitely for high-traffic historical domains
• Monitor the Search Console to confirm that Google is mainly crawling and indexing the new domain

Is this statement consistent with what we observe in practice?

Yes, but it skirts a more complex issue. Mueller is correct that a branded search of the old domain proves nothing. Many SEOs panic when they see the old URL appear and conclude that the redirect is failing.

What he doesn’t mention: in some cases, Google continues to display the old domain in the typical organic results, even after a year of correct redirection. This happens when signals are contradictory: powerful backlinks to the old domain, content not exactly equivalent on the new one, or technical issues on the new site.

What scenarios really pose a problem?

If after 12 months of 301 redirection, your organic traffic stagnates and the Search Console still shows the old domain predominantly in impressions, then there’s a real issue. [To be verified] because Google does not specify what thresholds to use to diagnose a problem.

Another warning signal: strategic pages that rank better on the old domain than on the new in typical organic results. This indicates that Google has not consolidated the signals, often because the content does not match exactly or the new site has technical issues (crawl, indexing, load times).

How can you differentiate a false problem from a real malfunction?

Use a private browsing window and search for your target queries without ever typing the old domain. If the new domain appears normally, the migration is working. If the old one persists on generic queries, you have a consolidation problem.

Also compare the organic traffic curves in Analytics: the new domain should gradually capture the volume of the old. If you see a net loss without recovery, the redirection alone is not enough — you need to dig into the quality of the new site, its internal linking, and its technical performance.

How to properly check the status of a domain migration?

Forget direct searches of your old domain. Focus on critical business queries: those that generate your traffic and conversions. Check manually, in private browsing, which domain appears in the top 10.

Use the Search Console to compare properties. Add both domains (old and new) as distinct properties. After a few months, impressions and clicks should shift massively towards the new one. If the old one still captures 30-40% of impressions after a year, consolidation is failing.

What mistakes to avoid during a domain redirection?

The most common mistake: redirecting all URLs from the old domain to the homepage of the new. Google interprets this as a soft 404. Each page must redirect to its exact equivalent or the closest possible on the new domain.

Another classic mistake: changing URL structure during the migration without accurately mapping old to new. The result? Google loses thematic relevance signals and the new domain ranks worse than the old, even with the redirects in place.

What to do if Google still predominantly shows the old domain after 12 months?

First, check that the redirects are indeed permanent 301s, not temporary 302s. Verify using a tool like Screaming Frog or directly with curl. A 302 tells Google not to transfer signals.

Next, audit the technical quality of the new domain: crawl speed, crawl budget used, server errors. If Google struggles to crawl the new site effectively, it will continue to favor the old one in its results. Compare the server logs of both domains to identify bottlenecks.

• Test your main queries in private browsing, without ever searching for the old domain directly
• Compare Search Console data of both properties to measure the real traffic shift
• Map each important URL from the old domain to its exact equivalent on the new
• Keep 301 redirects active for at least 18-24 months for sites with strong historical content
• Monitor server logs to confirm that Googlebot is predominantly crawling the new domain
• Audit the internal structure of the new site: the linking should be at least as effective as the old one