Submarine Fiber Optic Interruptions cause web outages across Africa; 6 countries are still affected

Thirteen countries across Africa experienced Internet outages on Thursday due to interruptions in submarine fiber optic cables. Some countries, including Ghana and Nigeria, are still suffering from nationwide outages. The reliance on submarine fiber optics for internet connectivity means that when these cables are compromised, entire countries can experience slowdowns, outages, and decreased bandwidth capacity.

Multiple network providers reported Internet outages, and Cloudflare's Radar tool, which monitors Internet usage patterns, detailed how the outage seemingly moved from the northern part of West Africa to South Africa. All 13 countries (Benin, Burkina Faso, Cameroon, Côte d'Ivoire, Ghana, Guinea, Liberia, Namibia, Niger, Nigeria, South Africa, The Gambia, and Togo) reportedly suffered nationwide outages, with most seeing multiple networks hit.

Some countries' Internet disruptions were short-lived, such as in Gambia and Guinea, as they lasted for 30 minutes, per Cloudflare. Other outages, like in South Africa (five hours) were longer, and some remain ongoing. As of this writing, Cloudflare reports that six countries, including Benin, Burkina Faso, Cameroon, and Côte d'Ivoire, are still suffering outages.

The outages started at around 05:00 UTC on Thursday in Guinea, Liberia, and The Gambia, Cloudflare said in a blog post that also shares charts of the affected countries' Internet usage. South of those countries, Côte d'Ivoire saw disruptions begin at 07:30 UTC that day, per Cloudflare's data. Inland, at 16:31 UTC, problems reached Niger in Central Africa.

Numerous sources, including local network providers like Telecel, MTN, AirtelTigo and the Ghana Chamber of Telecommunications, reported that damage to multiple undersea cables is to blame. In a statement issued on Thursday, March 14, by the Ghana Chamber of Telecommunications, it said some of these cables are completely down, while others are only delivering limited capacity.

Other reports, like the Azure status report, Microsoft said it "determined" that "multiple cables" on the West African coast, including Africa Coast to Europe, MainOne, SAT3, and West Africa Cable System, were disrupted. You can see a map of the cables that were damaged here. The source of the cable damage is undetermined.

"In addition to these cable impacts, the ongoing cable cuts in the Red Sea—EIG, Seacom, AAE-1 — are also impacting overall capacity on the East Coast of Africa. These incidents together had reduced the total network capacity for most of Africa's regions," Microsoft said.

Earlier this month, three undersea fiber cables in the Red Sea were cut, disrupting an estimated 25 percent of Internet traffic in the Middle East, Asia, and Europe and forcing plans to reroute traffic. The cause of these damaged cables has not been confirmed.

Undersea cable-related Internet outages are not new, as such cables are responsible for an estimated 99 percent of intercontinental traffic, per calculations by TeleGeography citing data from Euroconsult (TeleGeography notes that minimal data means its calculations are not "precise") and can last a while. Much of Tonga, for example, had to rely on satellite dishes for Internet access in 2019 for 12 days due to a submarine fiber cable issue.

Source: SCHARON HARDING