Googlebot: the crawler your Google visibility depends on
Googlebot is Google's main crawler: it discovers, downloads and refreshes the pages that make up the Google Search index. Since AI Overviews arrived, its role has expanded — Google's AI-generated answers draw from that same index. A site Googlebot doesn't crawl exists neither in classic search nor in Google's AI answers.
Technical profile
- Operator
- Role
- Google Search indexing
- robots.txt token
Googlebot- User-agent (example)
Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5X Build/MMB29P) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/W.X.Y.Z Mobile Safari/537.36 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)- Respects robots.txt
- Yes (founding implementer of the standard)
- Official IP ranges
- 585 ranges published by the operator across all its bots (snapshot of 2026-07-29, refreshed on every deployment) — official file
- Official documentation
- Googlebot documentation
The most spoofed bot on the web
“Googlebot” is scrapers' favorite disguise: impersonating it opens the doors sites reserve for search engines. Google publishes two official protections: reverse DNS verification and official IP ranges (googlebot.json). Any “Googlebot” hit whose IP falls outside those ranges is an impostor — our log analyses catch them regularly.
This verification is no refinement: analyzing fake Googlebot skews all your SEO conclusions (overestimated crawl volume, “crawled” pages that weren't, errors wrongly attributed to the engine).
Reading Googlebot's behavior in your logs
Three readings are worth it: per-page frequency (are your strategic pages recrawled regularly?), response codes served (a recurring 5xx reduces crawl, Google documents it), and the overall volume trend (a drop often announces a problem before the traffic decline). Your logs are the only exhaustive source of these signals — Search Console samples.
What our logs show: one Googlebot request in two goes to robots.txt
Across our eight-day measurement, Googlebot issued 252 requests, or 14.6% of all crawler traffic the site received — and only 23.1% of Google's own crawl, far behind GoogleOther. It showed up on all eight days without exception, from ten IP addresses all within Google's officially published ranges.
How those requests break down is the most counter-intuitive fact: 122 of them, or 48.4%, targeted the robots.txt file alone. On a site of about sixty URLs, nearly half the budget Googlebot spends is therefore not used to read pages but to re-check your directives. It also touched 55 distinct URLs and never issued a ?_rsc-style request, unlike GoogleOther.
Its daily volume proved remarkably stable: between 29 and 51 requests a day across the whole period, including the three days the site served it 500 errors (17 in total). Over the same window, GoogleOther lost 81% of its volume. Discovery speed was never a bottleneck either: an article published at 21:49:36 UTC received its first Googlebot hit six minutes and two seconds later, with no manual submission.
Measured on our own server logs, 20–27 July 2026 (1,722 crawler requests kept after verification). Full protocol and dataset: our case study on crawl budget for a brand-new site.
Verifying it's really Googlebot
Google officially documents two methods: reverse DNS (the IP must resolve to googlebot.com or google.com, and back) and comparison against the IP ranges in googlebot.json, refreshed by Google. Our analyzer applies the latter automatically to every hit, in your browser — the IPs in your logs are never transmitted.
View Googlebot's official IP ranges (JSON)Blocking or allowing Googlebot (robots.txt)
Never block Googlebot on content you want in Google: it's the index's only entry door. Use robots.txt to spare it worthless areas (parameters, technical resources) and preserve crawl budget — not to restrict your strategic pages.
To block it:
User-agent: Googlebot Disallow: /
To explicitly allow it:
User-agent: Googlebot Allow: /
Frequently asked questions
How do I verify a Googlebot hit is genuine?
Two official methods documented by Google: reverse DNS (the IP must resolve to googlebot.com or google.com) and the IP ranges published in googlebot.json. A “Googlebot” user-agent with an out-of-range IP is a disguised scraper — it's the most spoofed bot on the web.
Does Googlebot feed AI Overviews?
Yes: Google's AI Overviews rely on the search index built by Googlebot. There is no separate crawler to allow in order to appear there — and blocking Googlebot removes you from them, as from classic search. The Google-Extended token, by contrast, only governs Gemini training.
Why is Googlebot crawling my site less than before?
Google-documented causes: repeated server slowness or errors (crawl decreases proportionally to URLs returning 5xx), stale content, or lost signals (links). A lasting drop deserves a log analysis: it often precedes a visible traffic decline.
What share of my crawl actually comes from Googlebot?
Only your logs say precisely. Drop your access.log files into our analyzer: it separates Googlebot from Google's other bots (notably GoogleOther), verifies each hit by IP and shows crawled pages, frequencies and response codes — no upload.
Sources
Every fact on this page is backed by a primary source — the operator's official documentation and, where it exists, its published IP list.
See what this bot does on your site
Drop your access.log files into the Crawl Lab log analyzer: it isolates Googlebot, verifies its authenticity and lists the pages it requests — entirely in your browser, no upload.
Analyze my logs