What Google says about "dns lookup"

🎥 YouTube Videos 2

How can you verify that a crawler is really Googlebot and block fake ones without hurting your SEO?

Google 🎥 YouTube Aug 2023 ★★★

Pour vérifier si une IP est un crawler Google, faites un reverse DNS lookup de l'adresse IP pour obtenir le hostname, puis vérifiez le hostn...

Does loading JavaScript from too many domains really slow down your site's first impression?

Alan Kent 🎥 YouTube May 2022 ★★★

Si les fichiers JavaScript sont chargés depuis différents noms de domaine, il peut y avoir une surcharge de lookup DNS par domaine. Un nombr...

💡 Semantically related 8

Statements from the same topics, to deepen your understanding.

Is it really necessary to split your XML sitemap into multiple files?

John Mueller May 2026 ★★★

How Does Google Actually Choose Which Canonical URL to Index When Multiple Versions Exist?

John Mueller Sep 2019 ★★★

Is JavaScript really blowing your crawl budget?

John Mueller Jun 2017 ★★★

How can you successfully change your domain without losing your SEO rankings?

John Mueller Jul 2014 ★★★

Why could your HTTPS site display an incorrect name and favicon in Google due to a phantom HTTP page?

John Mueller Feb 2026 ★★★

Does Submitting Individual Sitemaps Actually Speed Up Crawling, or Is One File Enough?

John Mueller Sep 2025 ★★

Should You Use a Noindex Header to Protect Your llms.txt Files from Google Indexing?

John Mueller Jul 2025 ★★

How Can You Manage Multi-Version URLs to Maximize Your SEO Visibility?

John Mueller Nov 2024 ★★★

What Google says about « dns lookup »