Can anyone verify if these guys a legit? I can't find an address on them. The only contact on their website is an email.

legit? just see this:

Registry Registrant ID:

Registrant Name: WhoisGuard Protected
Registrant Organization: WhoisGuard, Inc.
Registrant Street: P.O. Box 0823-03411
Registrant City: Panama
Registrant State/Province: Panama
Registrant Postal Code:
Registrant Country: PA
Registrant Phone: +507.8365503

Oh and do not even think that this phone number +507.8365503 will be useful for anything, see:

https://www.google.co.mz/search?q=%2B507.8365503&oq=%2B507.8365503&aqs=chrome..69i57&sourceid=chrome&ie=UTF-8

https://twitter.com/Estrahash1/status/1013018126848614407