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salam every one, this is a topic from google web master centrale blog: Lately I've heard a couple smart people ask that search engines provide a way know that a bot is authentic. After all, any spammer could name their bot "Googlebot" and claim to be Google, so which bots do you trust and which do you block?
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. So the crawl folks have provided another way to authenticate Googlebot. Here's an answer from one of the crawl people (quoted with their permission):
This answer has also been provided to our help-desk, so I'd consider it an official way to authenticate Googlebot. 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. (Thanks to N. and J. for help on this answer from the crawl side of things.)this is a topic published in 2013... to get contents for your blog or your forum, just contact me at: devnasser@gmail.com |
Labels: crawling and indexing, general tips
