Official statement
Other statements from this video 10 ▾
- 3:14 Pourquoi votre trafic SEO chute-t-il sans que vous ayez rien changé sur votre site ?
- 7:28 Google utilise-t-il vraiment les données démographiques pour classer vos pages ?
- 10:36 Les favicons mobiles de Google se mettent-ils vraiment à jour automatiquement ?
- 12:52 Les images sensibles peuvent-elles vraiment bloquer l'indexation de vos pages ?
- 14:13 Les politiques de confidentialité influencent-elles vraiment le classement Google ?
- 21:32 Faut-il vraiment bloquer l'indexation de toutes vos pages de résultats de recherche interne ?
- 41:59 Comment Google supprime-t-il réellement les pénalités manuelles pour liens artificiels ?
- 51:37 Faut-il vraiment optimiser les URLs des articles d'actualités avec des mots-clés ?
- 52:12 Combien de temps faut-il pour qu'une migration d'URLs soit digérée par Google ?
- 65:20 Le mobile-first indexing s'applique-t-il automatiquement à tous vos nouveaux contenus ?
Google states that changing a website's IP address — for instance during a hosting migration — does not directly affect organic rankings. The key is to maintain accessibility for both users and crawlers. In practical terms, this means that a well-executed technical migration should not result in a drop in rankings, provided that the site's availability is ensured.
What you need to understand
Why does this statement debunk a persistent SEO myth?
For years, some SEO practitioners believed that a website’s IP address acted as a ranking signal. The underlying idea: sharing an IP with low-quality sites — or transitioning from a "clean" IP to a less reputable one — could contaminate your profile and affect your rankings.
John Mueller has made it clear: The IP address is not a direct ranking factor. Google does not assess a site's quality based on its IP neighborhood. What matters is Google's ability to access resources and the overall user experience.
What really matters when changing hosting providers?
Hosting migration often leads to changes in technical infrastructure: server configuration, response time, HTTP header management, security protocols. These aspects can impact SEO — but indirectly, through measurable metrics like loading time, 5xx error rates, or overall availability.
If your new server is slower, poorly configured, or causes service interruptions, Googlebot will face crawling difficulties. That's where the risk lies, not in the IP itself. A poorly executed migration can degrade user experience signals (Core Web Vitals, bounce rate), which will affect rankings.
Does Google still monitor IP addresses?
Yes, but for operational, not algorithmic reasons. Google uses the IP to identify the datacenter, manage crawl distribution, and detect geographic blocks or problematic network configurations. If your IP changes, Googlebot simply adjusts its internal mapping.
However, if the IP change coincides with a migration to a cheap host that has a catastrophic uptime or dismal response times, Google will notice a decline in accessibility — and that will weigh more than the IP.
- The IP address is not a direct ranking signal in Google's algorithm.
- Hosting migrations can impact SEO if they degrade speed, availability, or technical configuration.
- Googlebot uses the IP for crawl and geolocation reasons, not to evaluate content quality.
- The "bad IP neighborhood" is a myth: sharing an IP with spam sites does not contaminate your profile.
- What matters: ensuring the site remains accessible, fast, and technically sound after migration.
SEO Expert opinion
Is this statement consistent with real-world observations?
Absolutely. For years, I have assisted dozens of hosting migrations — including transitions from dedicated servers to shared clouds, with changes in IP and network class. No reproducible correlation between IP change and ranking fluctuations, as long as the quality of the new hosting is up to par.
The few cases where a post-migration drop was observed always revealed an underlying technical cause: 503 errors during the DNS switch, poor 301 redirect configurations, expired SSL certificates, or an undersized server unable to handle traffic. The IP was just a detail in a failed migration.
What nuances deserve to be mentioned?
First nuance: the server's geolocation can play a minor role for local queries without explicit geographic targeting. If you're moving from a French datacenter to an American datacenter, Google may slightly adjust its perception of your geographic target — especially if you haven't defined any geotargeting through Search Console or hreflang. It’s not the IP that matters, but the consistency of geographic signals.
Second nuance: some low-quality hosts do concentrate spam sites. But Google does not penalize them in bulk via IP; it detects them individually through behavioral signals and content quality. If you migrate to a host known for hosting spam, your site won't be punished by contagion — unless you replicate the same toxic patterns.
When might this rule not be sufficient?
Mueller's statement concerns the standard operation of the organic algorithm. It does not cover cases of manual actions: if you land on an IP previously penalized for massive DDoS attacks or phishing, it’s possible — though rare — that your site could undergo increased manual scrutiny. [To be verified]: Google has never published data on the frequency of this scenario.
Another edge case: migrations to CDNs or reverse proxies that mask the original IP. Here, it’s not the IP that causes problems, but the configuration of headers (X-Forwarded-For, CF-Connecting-IP) and cache management. A misconfiguration can prevent Googlebot from accessing fresh content, creating a discrepancy between the index and the site's reality.
Practical impact and recommendations
What should you do before changing hosting providers?
Before any migration, conduct a complete technical audit: server response times, HTTP error rates, security header configurations (CSP, HSTS), HTTP/2 or HTTP/3 compatibility, TLS 1.3 support. Compare these metrics between the old and new host. If the new server is 200 ms slower on average, you will degrade your Core Web Vitals — and Google will pick that up.
Plan the DNS switch with a TTL reduced to 300 seconds at least 48 hours before the migration. This speeds up propagation and limits the period during which some users or crawlers may still point to the old server. Keep the old hosting active for 7 to 10 days post-migration to avoid traffic loss.
What mistakes should you absolutely avoid during migration?
The classic mistake: shutting down the old server too soon. The DNS propagation is never instantaneous, and some ISPs update their caches slowly. If you turn off the old server before all DNS resolvers have switched, part of your traffic will fall into a void — and Googlebot may encounter 5xx errors or timeouts.
Another trap: neglecting SSL certificate configuration. An unrenewed or poorly installed certificate on the new server generates security warnings, blocks Googlebot, and can cause your rankings to drop almost instantly. Check the entire certificate chain, including intermediates, before the switch.
How can you verify that the migration hasn't degraded SEO?
Closely monitor Search Console for 4 weeks post-migration. Look at coverage reports to detect any spikes in 5xx errors or timeouts. Compare the number of pages crawled per day before/after: a dramatic drop signals an accessibility issue.
Analyze Core Web Vitals in the Page Experience report. If LCP or TTFB deteriorate significantly, your new host is likely undersized or poorly optimized. Use WebPageTest or GTmetrix to measure response times from various geographic locations.
- Reduce DNS TTL to 300 seconds at least 48 hours before migration
- Keep the old server active for 7 to 10 days after the switch
- Check the complete SSL/TLS configuration (certificate chain, supported protocols)
- Compare server response times (TTFB) before/after migration
- Monitor Search Console reports (coverage, crawl errors, Core Web Vitals)
- Test site accessibility from various geographic locations and ISPs
❓ Frequently Asked Questions
Un changement d'adresse IP peut-il provoquer une chute de positions Google ?
Partager une IP avec des sites spam nuit-il au SEO ?
Faut-il prévenir Google avant de changer d'hébergeur ?
La géolocalisation du serveur influence-t-elle le SEO local ?
Combien de temps faut-il attendre après une migration pour voir l'impact SEO ?
🎥 From the same video 10
Other SEO insights extracted from this same Google Search Central video · duration 1h10 · published on 31/05/2019
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