Very much agreed on all points (leased may have been more appropriate). It was a customer, im just the techie in this instance. Certified letters have been sent and contracts signed, that phone number used to work. I spoke with the ORG handle over the phone, since then its looks like he's disappeared. Im merely attempting to do my due diligence for my employ and this is without a doubt the de facto standard for contacting the un-contactable. Jeroen Massar wrote

I didn't know that you could BUY address space, then again you are probably talking about some old legacy block. As you say 'purchased' there was probably money involved, I would say: follow the money. I do hope that you actually where talking to the right people and didn't give cash to some random folks, then again, if you where not, you deserve that for not dealing with it properly ;)

Maybe you should be getting your address space from ARIN?

Greets, Jeroen