12 Nov 2025
We’ve updated the methodology we use to compile the Internet Society Pulse Internet Resilience Index (IRI). The IRI uses a range of data sources, and we update it on a regular basis. In this release, we’ve updated it to include 2024 data, but we’ve also updated both how we calculate and how we represent that data. The overall result is that the Index now provides data for 180 countries for the entire period from Q1 2019 to Q4 2024.
What's New
Removed a measure and updated weightings for accuracy
We’ve been using a measure we call Fiber 10 km reach as part of our cable infrastructure pillar. We wanted to have some way to show whether fiber was available in an area, but it turned out to be a difficult metric in a number of ways. Most of all, it was too difficult to source up-to-date, accurate source data for enough countries, which meant it’s been left blank on many IRI entries. Because of this, we also adjusted some of the weightings under the mobile connectivity and enabling infrastructure dimensions, so that now they’re each weighted 50%.
Improvements
Refreshed a number of other indicators with new sources
We’ve streamlined some and updated others to give better coverage, or to align more closely with measurements we use elsewhere in Pulse.
| Indicator name | Old source | New source |
|---|---|---|
| Affordability | ITU-D ICT Price Baskets | ITU Mobile data and voice low-consumption basket |
| Data centers | Data Center Maps | Peering DB |
| IPv6 | APNIC | Average of multiple sources (Akamai, APNIC, Facebook, Google) |
| IXP count | PCH and Peering DB | PeeringDB |
| Market concentration | APNIC | APNIC and AS2Org+ |
| Peering efficiency | PCH and Peering DB | PeeringDB, RIPEstat |
| Upstream provider diversity | Gini coefficient of AS Hegemony data from IIJ Internet Health Report | HHI of AS Hegemony data |
Moved the methodology document into a standard webpage
The methodology document has been in PDF format since we released the IRI. We’ve now created a webpage for the IRI methodology, which is more accessible, easier to keep updated, and easier to read.
Better estimation of values where there is missing data
When we’re missing data for a measurement, we still need to use an estimate, so that we can calculate a resilience score that works for the Index. This is known as “imputing” values, and we’ve improved how we do this where data points are missing for individual countries or time periods. This is what has allowed us to create a more accurate index. It now has 180 countries represented across the period of 2019-2024, rather than the former 186, but the data is more accurate.
You can read more about it in the updated methodology document.
Bug Fixes
Fixed typographical errors in the math listed in the methodology
There were some errors in mathematical equations in the IRI Methodology document that have been fixed as part of the update to document the new set of Indicators and Index weights.