An SEO professional was concerned about crawling and whether Googlebot will crawl via an identifying IP.
They have Googlebot crawling specific URLs that were setup for advertising reasons. Namely, UTM parameter URLs, Google Display URLs, and Universal App campaigns.
Even so, the professional has checked and they do not see any links coming from anywhere to those URLs.
So, this behavior caught them by surprise.
John explained that while he doesn’t know offhand, he does believe they would crawl those pages as Googlebot in order to ensure that they can pick them up for the Merchant Center.
If there are tagged URLs like UTM URLs, it’s possible that regular Googlebot will crawl them and they will show up in Google Search Console.
It’s possible as well that there may be someone who is acting on their behalf to submit the URLs as well.
The most likely reason is, if Google does find links to these pages somewhere, they will try to crawl them.
If there are tagged internal links anywhere within a website, Google will attempt to process them and crawl those.
He also explained that Google doesn’t crawl URLs at a large scale without showing it’s Googlebot, specifically.
This happens at approximately the 54:22 mark in the video.