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 ...

Many in the industry realize that as we migrate to IPv6 there will be a day when IPv4 is not needed anymore. However, that transition seems daunting and may take decades. In the meantime, ...

It would have been so easy if the early Internet and TCP/IP network designers had made IPv6 backward compatible with IPv4. They didn't. In 1981, IPv4's 32-bit 4.3 billion addresses look more than ...

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 ...

The shortage of IPv4 addresses has reached a critical stage, according to the registries that allocate internet numbers around the world. The Number Resource Organization (NRO), which represents the ...

eWEEK content and product recommendations are editorially independent. We may make money when you click on links to our partners. Learn More. The last IP address blocks in the IPv4 namespace will be ...

On Feb. 3, 2011, the central pool of available IPv4 addresses managed by the Internet Assigned Numbers Authority (IANA) was depleted when each Regional Internet Registry (RIR) received its last IPv4 ...

The 240/4 block of IPv4 addresses – the six percent of the available IPv4 space that is currently not available for public use – should be left alone rather than being added to the pool of available ...

I'm looking for more information about having IPv4-only devices (embedded, legacy, etc) on a network that is otherwise IPv6-only, with IPv6-only Internet access. It's academic at this point, but I can ...

We’ve been hearing about the impending depletion of IPv4 addresses for years, but that day is finally upon us — the free supply of IPv4 numbers in North America will be completely gone within a month ...