First Time investor dealing with a wholesaler

[Bennett Steinle]

I'm planning on buying a property soon and have found an off market deal from craigslist. The deal had a website listed which I checked out and there I found an email address and contact number.

I left 2 voicemails and sent an email before receiving a response. They responded via text, gave me a lockbox code, and told me the property was vacant and I could visit any time. 

Is this kind of thing typical, it just seems a little sketchy. I told them I'd like to at least talk with someone and get a name so I know who I'm dealing with before I just walk into a random house I found on craigslist.