Photo by Compare Fibre on Unsplash

In 2011, IP addresses were officially recognized as a form of property, when a U.S. Bankruptcy Court approved the first ever paid transfer of IPv4 numbers between Microsoft and Nortel. That approval allowed the sale of 666,624 IPv4 numbers for USD $7.5M, putting a $11.25 price tag on a single…


Originally published on addrex.net.

Photo by Dom Fou on Unsplash

In May 2019, Addrex contacted Hoa Nguyen, Vice President for Administration and Business Affairs at Heidelberg University in Tiffin, Ohio, to see if the University would be interested in selling an IPv4 block they had received in 1990 to generate additional revenue for the University. Mr…


Originally published on addrex.net.

Photo by Michael Marsh on Unsplash

2020 has been a very challenging year for educational organizations. Colleges and universities across the world endured an enormous financial impact. Educational institutions suffered from plummeting international enrollment, costs of adjustment to distance learning, COVID testing/protocols, and many other issues related to the “new normal”. …


Originally published on addrex.net.

Photo by Christopher Burns on Unsplash

2020 was a vibrant year for IPv4 market and registry updates. About 42 million numbers were transferred in 2020. An additional 47.5 million numbers were updated due to company mergers and acquisitions.


Originally published on addrex.net.

Photo by Adolfo Félix on Unsplash

A Regional Internet Registry (RIR) is a non-profit organization whose main purposes are to manage, distribute, and register Internet number resources — including IPv4 and IPv6 number blocks and Autonomous System (AS) Numbers — within their respective regions.

There are five RIRs scattered around the globe…


Originally published on addrex.net.

Photo by Marvin Meyer on Unsplash

What is the difference between an IPv4 address and an IPv6 address? Let’s start by defining what an IP address is. Each device or interface connected in a computer network is assigned a unique identifier to ensure it receives messages and information intended for it, much…


Originally published on addrex.net.

With one more month of 2020 ahead of us, we have already witnessed a highly active IPv4 transfers market this year. According to the transfer logs (raw data) available from the Regional Internet Registries (RIRs), over 40 million numbers have been transferred since January 1, 2020…


Originally published on Addrex.net.

Photo by Taylor Vick on Unsplash

An IP number block is a group of IP numbers that have not yet been assigned to specific devices on a network; once assigned and in use, IP numbers technically become IP addresses, although many people refer to IP numbers and IP addresses interchangeably.

In the…

Addrex, Inc.

Addrex, Inc. pioneered the secondary IPv4 number block market and provides a global marketplace for buying and selling IPv4 number block rights.

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