A telecommunications official on Sept. 28 warned that the United States could run out of unique internet addresses to assign to new devices by the end of next year, Reuters reports. Internet Protocol version 4, known as IPv4, provides the dominant architecture for the internet. It requires devices to have unique identifiers, known as an IP address, but it only has space for 4.3 billion of those addresses. The recent profusion of mobile devices like Research in Motion's BlackBerry and Apple's iPad, and the expansion of internet services to more homes, have quickly depleted available addresses. An upgrade to the...
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