Hi! Thanks for reaching out to us!
We do have a Crawl Test tool in Moz Analytics, but it requires your pages to be reachable over the public internet from Moz's servers. Allowing such access to your network would be a lot of trouble, and if I were you I wouldn't want to do it. It's a potential security risk for you, and it might involve a list of crawler IP addresses that is likely to change over time.
If you're looking for a service that to which you can upload pages for diagnosis, we don't offer a tool like that. I'll pass this along to our product team, though. Thank you for the suggestion!
Regards,
Maura Hubbell