Vesna Manojlovic

Our First Glance at the Uganda Internet Shutdown

Vesna Manojlovic
Contributors: Stephen Strowes
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Reports indicate that the Ugandan government initiated a shutdown of the country's Internet yesterday evening. Here's a look at what we're seeing based on data available from our Routing Information Service (RIS) and RIPE Atlas.


The shutdown began ahead of the Ugandan presidential election, which takes place today, and is currently still in effect as of the time of writing. A number of individuals and organisations shared their observations on the impact of the shutdown via social media. To help the Internet community better monitor the ongoing impact of the event, here's an initial look at what we're seeing in our data. 

ASNs, IPv4 prefixes and IPv6 prefixes

On the morning of 13 January, 36 Ugandan ASNs were visible in our RIS data. By midnight, that number had dropped by a third, to 24. In total, 303 of 565 (54%) IPv4 prefixes vanished from the routing data, along with 9 of the 17 IPv6 prefixes registered in the country.

As you can see in the country routing visualisation from RIPEstat below, the biggest drop occurred between 15:00 and 17:00 UTC (18:00 - 20:00 Uganda local time).

RIPE Atlas Probe Outages across ASes

RIPE Atlas probes located in AS29032 (DATANET-UG), AS327687 (Research and Education Network for Uganda) and AS327724 (National Information Technology Authority Uganda) went offline during this same period. 

Another probe located in AS37386 (Uganda Internet Exchange Point) was not affected. However, although the probe is still online, the shutdown does seem to have had an impact. The network delay visualisation below, from the Internet Health Report, shows a significant spike in network delays around the time the shutdown was initiated (more specifically, between 16:00 and 18:00 UTC).

Summing Up

This is a first look at the shutdown from the perspective of the data we have available. Having more RIPE Atlas probes situated in Uganda would help give a fuller picture of the situation, so we would encourage people to get involved and host a probe

As always, there is plenty of room for further analysis here, and we invite and encourage anyone out there to make use of all the tools and datasets we at the RIPE NCC have to offer in order to get a better understanding of this and similar events and their impact on the Internet as a whole. If you have something to add right now, please go ahead and leave a comment below.

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About the author

Vesna Manojlovic is Community Builder at RIPE NCC. Vesna joined the RIPE NCC as a Trainer in 1999. In 2003, she took responsibility for developing and delivering advanced courses, such as RPSL, Routing Registry, DNSSEC and IPv6. In 2008, she lead efforts to establish IPv6 RIPEness as a measure of IPv6 deployment among LIRs. In 2011, she joined the Science Division as Manager of the Measurements Community Building team; in 2015 she moved to Communications Department as Senior Community Builder, with a focus on organising hackathons. Vesna gives presentations at many technical conferences and workshops, and enjoys visiting hackerspaces. Vesna received a Batchelor of Sciences Degree in Computer Science and Informatics from the School of Electrical Engineering, University of Belgrade. She has three children.

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