Article has elements of FUD
Slightly over the top article trying to overstate the upcoming end of the world. Those blocks have only been split up and reallocated to different regions for their use, so it's not like we've suddenly lost the use of them.
Also, please note that those allocated addresses don't have to be Internet routable; there are other networks out there other than the Internet to which registered address space is used, you know.
Many corporations have to use registered address space when dealing with connectivity to third parties and/or business partners through private connections so they can be sure that network is really owned by company. (ignoring the encryption and authentication angle)
Of course, whois information could be out of date, but that's unfortunately one of the only ways of checking.
