At 09:30:15 UTC on Tuesday, 18 March, APNIC signed a new Route Origin Authorization (ROA) for a country that had never had one before: North Korea. However, as was first reported by the North Korean Internet blog, there was a problem.
The new ROA specified a maximum prefix length of 22, shorter than the four /24 routes originated by North Korea’s only ISP, Star JV (AS131279), rendering the routes RPKI-invalid. As such, minutes after the publication of this problematic ROA, many international carriers began rejecting routes from the modern-day hermit kingdom, dramatically reducing their propagation and the country’s reachability from the internet.
VIA Kentik
View North Korea’s Internet profile via the Pulse Country Report