We just saw that the mask determines where the boundary between the network and host portions of the IP address lies. This boundary is important: If it is set too far to the right, there are lots of ...

On Feb. 3, 2011, the Internet Corporation for Assigned Names and Numbers (ICANN) announced that the last remaining Internet protocol version 4 (IPv4) IP addresses had been allocated, although it may ...

At last, a small set of unicast addresses have been defined for special use. They do not carry a scope, so they are discussed independently of the other unicast addresses. Two basic addresses carry ...

A total of 33.6 million addresses are on their way to their ultimate users on the Net--meaning the last blocks of IPv4 addresses will be allocated soon. IPv6, hurry up, would ya? Stephen Shankland ...

If you are using Internet or almost any computer network you will likely using IPv4 packets. IPv4 uses 32-bit source and destination address fields. We are actually running out of addresses but have ...

A growing number of U.S. carriers and enterprises are hedging their bets on IPv6 by purchasing blocks of unused IPv4 addresses through official channels or behind-the-scenes dealmaking. Why the ...

Although IPv6 adoption seems to be moving at a snail's pace, there's no outrunning it. Brien Posey demystifies some of the addressing issues many admins are still trying to figure out. [Editor’s note: ...