In order to fetch from the "official" Googlebot IP range, the bot has to respect robots.txt and our internal hostload conventions so that Google doesn't crawl you too hard. And also see this from CloudFlare, which I'm assuming refers in part to the "internal hostload conventions" that Google mentions have been established

The best way to verify that a request actually comes from Googlebot is to use a reverse DNS lookup on the source IP of the request. Googlebot and all respectable search engine bots will respect the directives in robots.txt, but some nogoodniks and spammers do not. Nov 21, 2017 · Google does not share lists of IP addresses that the various Googlebots use since these addresses change often. To find out if a real Googlebot visits your site, you can do a reverse IP lookup. Spammer or fakers can easily spoof a user-agent name, but not an IP address. Here’s Google’s example of verifying the validity of a Googlebot. The IP ranges used by Googlebot. The following IP ranges are used by Googlebot while it crawls the Internet: Sep 20, 2006 · The common request we hear is to post a list of Googlebot IP addresses in some public place. The problem with that is that if/when the IP ranges of our crawlers change, not everyone will know to check. In fact, the crawl team migrated Googlebot IPs a couple years ago and it was a real hassle alerting webmasters who had hard-coded an IP range. ID IP Address Organization Country State City Timezone Browser Operating System Bot/spider; 1: 66.249.79.252: Googlebot: United States - - - - - - America/Chicago May 25, 2016 · Geo-distributed crawling: Googlebot appears to be using IP addresses based outside the USA, in addition to the longstanding IP addresses Googlebot uses that appear to be based in the USA. Language-dependent crawling: Googlebot crawls with an Accept-Language field set in the HTTP header. Jul 19, 2012 · Googlebot has a very distinct way of identifying itself. It uses a specific user agent, it arrives from IP addresses that belong to Google and always adheres to the robots.txt (the crawling instructions that website owner provide to such bots)..

Googlebot is the crawler that visits web pages to include them within Google Search index. The number one question we got from the community at events and social media was if we could make Googlebot evergreen with the latest Chromium.

GOOGLE (GOOGLEBOT) Googlebot IP addresses ranges.. FROM TO 64.233.160.0 64.233.191.255 66.102.0.0 66.102.15.255 66.249.64.0 66.249.95.255 72.14.192.0 72.14.255.255 74 Run a reverse DNS lookup on the ip address provided. Verify that the domain name is a subdomain of either googlebot.com or google.com. Run a forward DNS lookup on the host name returned from step 1 and verify it matches the original ip address. Why is it important to verify Googlebot? IP Info - Crawl-66-249-66-204.googlebot.com The lookup details for the requested IP Crawl-66-249-66-204.googlebot.com located in United States are purely informative. Although we try to be precise with the lookup location and other details regarding a certain IP or domain we cannot guarantee 100% accuracy. May 14, 2019 · All crawlers were identified with compatible UA strings and IP addresses, corresponding to their official documentation and the ASN of the companies to which they belong. Have fixes been implemented for all rules related to fake bots? The 100035_BETA (temporarily made available during the incident) only covered the Googlebot.

Sep 20, 2006 · The common request we hear is to post a list of Googlebot IP addresses in some public place. The problem with that is that if/when the IP ranges of our crawlers change, not everyone will know to check. In fact, the crawl team migrated Googlebot IPs a couple years ago and it was a real hassle alerting webmasters who had hard-coded an IP range.

IP Info - Crawl-66-249-66-204.googlebot.com The lookup details for the requested IP Crawl-66-249-66-204.googlebot.com located in United States are purely informative. Although we try to be precise with the lookup location and other details regarding a certain IP or domain we cannot guarantee 100% accuracy.