South Africa is currently down due to network outage in a Tier1 backbone ISP, below is the last update from Psychz provider.
Cogent Network Outage – Johannesburg Region
We would like to inform you that we are currently experiencing an upstream network outage with Cogent Communications in the Johannesburg region.
Cogent is actively working to resolve the issue. As this outage is within the upstream provider's network, our team is closely monitoring the situation and coordinating with Cogent for updates.
We will share further updates as soon as more information becomes available.