What is Google Bot?
Googlebot is Google’s web crawling bot (sometimes also called a “spider”). Crawling is the process by which Googlebot discovers new and updated pages to be added to the Google index.
It is very important to allow google bot to access your site so that your site ranking on search engine.
Here is the tools to identify if your site is reachable by Google bot.
Just insert your domain name and click on the Run Tool >> , the result will come out. If your site is unreachable by google bot, it will return error.