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 ...

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 ...

Some time last year, a weird thing happened in the hackerspace where this is being written. The Internet was up, and was blisteringly fast as always, but only a few websites worked. What was up?

The Number Resource Organization warns that less than 10 percent of the IPv4 address space remains; it's time to start adopting IPv6. The warning comes after APNIC, the registry that hands out IP ...

1,370 million IPv4 addresses were used up this past decade. We have 722 million left, so the bottom of the pool is in sight. There are 3,706,650,624 usable IPv4 addresses. On January 1, 2000, ...

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 ...

The various Internet management groups made it official this morning. We're now out of Internet Protocol version 4 (IPv4) Internet address blocks. The final five blocks of IPv4 addresses were given ...

It's official: the IPv4-based internet is full, or at least it will be within a few weeks. There are no more IPv4 addresses left to allocate, after APNIC, the Regional Internet Registry (RIR) for the ...