IPv4 Markets

IP Address Blocking

A network can fence its own IP addresses or block specific external ones from access. Administrators frequently block access to their own IP addresses to bar unwanted access to content. Individual IPs or blocks of IPs may also be blocked due to unwanted or malicious behavior. IP address blocking prevents a specific IP address or group of IP addresses from connecting with a server, computer, or application. more

CIDR in Networking: Improved IP Routing Efficiency

CIDR (Classless Inter-Domain Routing) is a routing system in which network engineers can distribute IP addresses based on the size of their specific network. This is more efficient than the previous system, which assigned IP addresses depending on whether the size of a network fits into one of only three sizes: Class A, Class B, and Class C. more

Sanctions & The Regulation of IP Transfers

The early stages of internet development operated in a culture of independence from outside influence. In fact, as though to commemorate the spirit of the times, in 1996, John Perry Barlow wrote "A Declaration of the Independence of Cyberspace." In it, he told governments they "have no sovereignty where we gather." He went on to state, "Ours is a world that is both everywhere and nowhere, but it is not where bodies live." more

The IPv4 Market in 2021

Price was the story of the 2021 IPv4 market. Large and small organizations alike continue to invest in their IPv4 infrastructure causing demand for IPv4 address space to intensify. Meanwhile, supply remains constrained. These market factors drove prices up at a historic rate in 2021. more

The Changing Role of IP Addresses in the Architectural Evolution of the Internet

I work at APNIC, the Regional Internet Registry that serves the Asia Pacific Region. APNIC provides common infrastructure services for the region that support the unique assignment of IP address blocks to Internet network operators within our region through the operation of an address registry. In short, IP addresses are what we do. So, when there are discussions in technology circles about evolving the Internet's address model in varying ways,... more