[jsheard]

Pretty sure that won't work, they let you validate whether an IP address is used by GoogleBot specifically, not just owned by Google in general. I doubt they are foolish enough to use the same pool of IP addresses for their internal crawlers and their public cloud.

https://developers.google.com/search/docs/crawling-indexing/...

[matt-p]

It depends how the site has implemented it, a huge number just look for AS origination and *googleuserconent.com