As part of a broader organisational restructure, data networking research at Swinburne University of Technology has moved from the Centre for Advanced Internet Architecture (CAIA) to the Internet For Things (I4T) Research Lab.

Although CAIA no longer exists, this website reflects CAIA's activities and outputs between March 2002 and February 2017, and is being maintained as a service to the broader data networking research community.

MAPPING -- Measuring And Practically Predicting INternet Growth

Measuring and predicting growth in Internet addressing, routing complexity and energy usage

IPv4 Internet Map Time Series

This page shows a time series of IPv4 space maps. Each map was generated for a 12 month window of IP data using the process described on the IPv4 Internet Map main page. For an explanation of how to read the map please also refer to the IPv4 Internet Map main page.

The first image shows the state at the end of December 2011. Each further image then advances time by 3 months, i.e. the second image show the state at the end of March 2012 and so on.

The buttons of the player are self-explanatory. Note, that moving the mouse cursor inside the image pauses playing. We tested the player with Opera, Firefox, Chrome and IE under Windows and Linux. Note, with Firefox there may be some flickering between image transitions when playing or stepping through the series for the first time. Note, with all browsers there may be some longer delays occasionally between pictures when playing.

Without unrouted space

With unrouted space


If you would like to contribute to the project (e.g. by giving us access to IPv4 address data), or have any suggestions or comments please contact Sebastian Zander (


The jQuery Image player we use was written by J. Llodra (

APNIC logo

This project has been made possible in part by grants from APNIC for a project titled "Exploring the Utilisation of IPv4 Address Space and Size of the NATed IPv4 Internet" and an ARC linkage grant with APNIC as partner organisation for a project titled "Tools and models for measuring and predicting growth in internet addressing and routing complexity" (project LP110100240). The research has also been supported by Australian Research Council grant FT0991594.

Last Updated: Monday 30-Mar-2015 17:57:33 AEDT | Maintained by: Sebastian Zander ( | Authorised by: Grenville Armitage (