In the early 1990s, internet engineers sounded the alarm: the pool of numeric addresses that identify every device online was not infinite. IPv4, the fourth version of the Internet Protocol, used ...

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 ...

As we run out of IPv4 address space, is it time to create an exchange for trading unused address blocks? Ars contributors Iljitsch van Beijnum and Timothy Lee tackle the issue. In this article, Tim ...

In April, ARIN, the (North) American Registry for Internet Numbers, announced that it had reached “phase 4” of its IPv4 countdown plan, with fewer than 17 million IPv4 addresses remaining. There is no ...

In addition to IPv4 (often written as just IP), there is IP version 6 (IPv6). IPv6 was developed as IPng (“IP:The Next Generation” because the developers were supposedly fans of the TV show “Star Trek ...

The format of an IP address in the traditional 32-bit version of the IP protocol. For the foreseeable future, IPv4 will co-exist with the newer IPv6 version (see IPv6). IPv4 uses a "dotted decimal" ...

In February 2011, the global Internet Assigned Numbers Authority (IANA) allocated the last blocks of IPv4 address space to the five regional Internet registries. At the time, experts warned that ...

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 ...

6 Types of Network Address Translation: Which One to Use? Your email has been sent Even though we’re no longer running out of IP addresses, Network Address Translation still plays a vital role. Learn ...