The following reference materials are designed to promote greater understanding of Internet Protocol and serve as a convenient source of IPv4 information:

RIR Transfer Policy Guide

Based upon the policies of each of the five Regional Internet Registries. This document is updated as the transfer policies are changed.



Download comprehensive, business-oriented analysis of the IPv4 marketplace in the form of original whitepapers by Kalorama advisors and contributors.


Guest Contributors

Information sharing and expert analysis are critical to the development of a more transparent, efficient IPv4 transfer market. Therefore, Kalorama is pleased to announce the addition of several Guest Contributors to its blog, beginning with Geoff Huston, Milton Mueller, and Brenden Kuerbis.



Take a deeper dive into IPv4 and the IPv6 transition.