No tool that I’m aware of but why does it matter? Redirecting an entire domain with a 301 does absolutely nothing for you in terms of search engine rankings. If a spider visits a URL that is redirected with a 301 they simply won’t index the original URL because there is no site to index and it’s been redirected.
This may help if your users are directly typing a URL into the address but it’s pretty unlikely that they would type something like hondaofatlanta.com all on their own.
That’s not really true. If you have a domain with a bunch of IBLs and you decide to stop hosting a site at that domain or to rename your site, you should definitely do a 301 on that domain to keep all that link juice flowing to the new domain name, otherwise you just lose all those links. It’s standard practice.
I agree - maybe I should have been more clear. I was referring to the practice of purchasing brand new domain names and 301 redirecting them to your main website. I have clients ask me if they can do that all the time so it seems to be a common practice which yields no results if the domain is brand new.
It would be a real pain for someone to find the backlinks of a 301 redirected domain…finrst they would have to sort though all the backlinks, the do a backlink chech on that domain…also most dont know about this.