Cloudflare is currently suffering an outage this morning that is affecting web sites around the world. This outage is not affecting all regions and only certain domains, including BleepingComputer. Over 16 million Internet sites utilize their services for performance enhancement, DDoS mitigation, or other features. A route leak is when another ISP advertises IP address networks that do not belong to them. This causes traffic to go networks it should not normally go through and cause poor performance, routing issues, and outages for affected sites.
Source: https://www.bleepingcomputer.com/news/technology/bgp-route-leak-causes-cloudflare-and-amazon-aws-problems/