Obtain/Buy/Reserve? tcp/ip addresses

My boss wants me to purchase, or in some way reserve, a number of tcp/ip addresses for our company.  How can I do this?  He wants a class c batch.  He is looking at providing internet dialup services for key employees (to be our own ISP).  Dynamically assign addresses to users.  Well, my problem right now is obtaining the addresses.  Help.
rustymailboxesAsked:
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jlevieCommented:
It really doesn't work that way any more. The IP blocks (except some that were grandfathered in and are now considered "portable IP blocks", independant of any major carrier) are all allocated out to the major carriers. They in turn allocate portions of that address space out to their customers (ISP's, regional carriers, etc), who in turn allocate portions of their address space out to their customers, and so forth. So if you want a block(s) of IP's you negotiate with your provider for that address space.

Sometimes it's possible to "purchase" one or more of the "portable IP blocks", but I've heard that they are quite dear to buy.
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