Thanks everyone who replied. I got many responses off-list, including a lot of positive endorsements for several different vendors. It's good to know there are so many reputable options.

-Ross

On Mon, Oct 1, 2018 at 9:57 PM, Ross Tajvar <ross@tajvar.io> wrote:
Hi all,

My US-based employer will be starting a new business unit soon that will require IPv4 addresses (aiming for a /22 to start with). I know ARIN has a waitlist (though I'm not sure where they're getting new IPs from), but the faster way is to buy blocks from people who already have them. I'm aware of Hilco Streambank - are there any other auctions? If I want to buy via private sale, does anyone know of ways to find sellers?

Thanks,
Ross