"Under 10% of IPv4 Space Remains" (icann)

four billion addresses may not be enough. well, maybe. it was told already 1992 and then came NAT [network address translation], the users don't care and industry fears the cost of transition. more likely there will be other solutions and more glueing done. the problem might be for those who dream: every thing its own ip address, but that's a stupid idea anyhow, imho.

the ipv4 address report