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Uganda Internet Exchange Point (UIXP)

The Uganda Internet Exchange Point (UIXP) is the national peering exchange in Kampala where Uganda's ISPs and content providers interconnect locally rather than via international transit. Like most IXPs, its economic function is to reduce transit cost (peering is cheaper than upstream transit) and latency (traffic between two Uganda-based networks doesn't have to cross oceans and return).

Its observability function is distinctive: IXP throughput is a reliable proxy for the domestic Internet's operational health, because almost all intra-country web, DNS, and video traffic flows through the exchange.

Canonical wiki instance: the 2026 election shutdown

Before the January 15, 2026 Ugandan presidential election, the Uganda Communications Commission (UCC) ordered mobile network operators to suspend public Internet access from 18:00 local on January 13. The immediate effect on UIXP throughput was extreme:

"Domestic traffic at the Uganda Internet Exchange Point (UIXP) dropped from approximately 72 Gbps to 1 Gbps as a result of the action taken."

The ~72 Gbps → ~1 Gbps collapse — documented in real-time by the UIXP community on social media and cited by Cloudflare Radar — is a textbook signature of a nationwide shutdown: domestic traffic didn't just drop, it collapsed to a trickle (the residual 1 Gbps presumably from whitelisted services, government links, and incidental traffic that wasn't cut by the operator block).

This pattern generalises: IXP throughput in a country during a shutdown tends toward a small, nonzero floor — not zero, because some services remain operational for essential or privileged traffic — and the ratio of the floor to the baseline throughput is an estimate of the shutdown's tightness.

Historical recurrence

Uganda's use of nationwide Internet shutdowns during elections is not new:

  • 2021 general election — Uganda blocked Internet access; UIXP throughput similarly collapsed at that time.
  • 2026 presidential election — the 72 Gbps → 1 Gbps collapse is the second instance at UIXP scale, following similar patterns.

Authorities had repeatedly promised the 2026 election would be different. As the Cloudflare Radar team paraphrased the UCC's ex-ante denials: "claims suggesting otherwise are false, misleading." UIXP's throughput during the event was the decisive counter-evidence.

IXP observability properties

Internet Exchange Points are useful shutdown-observability surfaces for several reasons:

  • Central single-location aggregation — traffic statistics are taken at the IXP's switch fabric, so instrumentation is concentrated and high-fidelity.
  • Covers cross-ISP domestic traffic — which most national Internet users generate, making the signal representative of user behaviour rather than of any single ISP's footprint.
  • Public or semi-public disclosures — many IXPs (UIXP included) publish aggregate throughput stats publicly, either on their website or via community channels (kyleville's X thread on UIXP's Q1 2026 throughput was cited by Cloudflare Radar).
  • Multi-source corroboration — IXP throughput + Cloudflare Radar country view + operator social-media posts together form a consistent evidence base for shutdown events.

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