We are a hosting provider, and we have our own IPs in Arin.net, and this server it is for dedicated backups, with no domain names, or subdomains, each client install it, and use it over SSL.
I was going to defend your use of IP#s until you responded with how you're using them.
We're also a hosting provider, and we have an onsite dedicated backup server as well as an offsite backup server available to our clients for the cost of transit.
For our onsite server we use a private network running on 192.168.x.x, and for the offsite server we use a single public IP#. I can't see a single reason to run it over multiple public IP#s.
Of course, in case other readers don't know, once you have your own IP# account, Arin charges exactly the same annual fee for either one /24 allocation or 15. That's us$1,250. Or in other words about 32.5 cents (US) per domain per year if you use them all.
And scsi (and others), all the fear-mongering aside, there are still a lot of IP#s left; it's just a matter of wresting them away from the Universities and certain other organizations who were given them in the first place.
So why the fear mongering?
Financial reasons. How can you charge us$1 per month per IP# (that's $3,840 per month for 3,840 IP#s), when they only cost you $104.17 per month if there's not a shortage.
The bottom line is that most people
believe there's a shortage, and that keeps the price high. You won't believe how many IP#s there are available if you're willing to spend $1 per IP# per month.
In fact a few months ago I was offered a
special price $1 per
year per IP# if I needed/wanted 4096 (a /20, or 16 /25s) (a /25 is what formerly was called a class-c allocation). No justification was necessary; only money.
I know this explanation may create some dissension; I stand by my post.
Jeff