

On the left side you will find a list of AS Numbers from which you can select the RTG poster you wish to view.
This work is licensed under a Creative Commons Attribution License . Reference to this website (http://rtg.netlantis.org/) and to "The Netlantis Routing Table Geoanalysis project" should be included in the copyright notice of any project derived from or using it.
You can read news about Netlantis and my other projects on netlantis blog and my blog.
Hosting sponsors : ![]()
Research sponsors : ![]()
![]()
Below is a description of the different charts you can find on the RTG posters.
![]()
This chart represents the distribution of IP addresses effectively announced (read usable) as seen in the BGP routing table of the operator you chose (identified by its AS number).
The percentages are not to be confused with the number of IP addresses allocated to these regions by their respective regional Internet registries (which could be very different).
I\'ve choosen to separate the world in 8 "continents" even though Central America and Middle East are not, but these are geo-politically interesting enough to be separated from the bigger/real ones.
The colors for each continent on this chart are also used as a legend for the two graphs below.
This chart represents the number of IP addresses announced (usable) for 100 inhabitants on each continent... the (perfect?) ratio of 100% meaning that every inhabitant can use one IP address.
More than 200% means that there is more than 2 usable IPs per inhabitants and 2% means there are only 2 IP addresses usable for 100 people (probably not too good for large broadband deployments... :)).
The average number of IP addresses announced for 100 inhabitants on all continents is named "World".
The first cell is the total number of routes present in the routing table of the AS you selected.
The second cell is a count of the total number of IP addresses in the routing table.
The third cell is a simple division of the two above, which gives you the average number of IP addresses per route.
This graph is probably the most complex one to understand.
On the horizontal gradient chart at the bottom you can see the share of each upstream provider for the AS you chose, ordered by number of IP announced through and by them.
Horizontally, you can see the geographical distribution of the IP announced by each upstream AS (the ASN displayed at the bottom).
The horizontal bars don\'t always reach 100% simply because (for a better reading) shares under 3% are not displayed.
These pie charts represent the distribution of AS path length on each continent as seen from the AS you chose.
The colors used, even if similar to those in the legend have nothing to do with them. The continents are named under each pie chart and the legend is displayed vertically on the right.
The AS path length is the number of AS a route has traversed between where it\'s announced and the AS you selected.
This pie chart represents the distribution of prefix size in the routing table analysed.
The colours used, even if similar to those on the legend have nothing to do with them. The legend is displayed horizontally under the pie, in CIDR notation (24 = /24, ...).