Is there a way to mask the form URL with a custom domain?

Also, is there a way to masque the domain of a form's URL in a browser with JotForm? For example, instead of the URL link for the form saying form.jotform.us can I make that first part of that domain be specific to my company name?

You can use a custom domain for your forms by adding a CNAME record to your hosting DNS settings. 

https://www.jotform.com/help/144-How-to-use-Custom-Domains-with-Jotform

Please note that we currently do not support HTTPs on a custom domain.