
Cloud DDoS Mitigation, Protected Hosting, and WAF for Online Services
BlockDOS is a DDoS protection provider founded in 2005, operating from Mississauga, Ontario and Sterling, Virginia. It sells to small businesses and enterprises whose revenue depends on staying online, with gaming accounting for the largest share of the attack traffic it handles, followed by software and technology companies, media and entertainment, and financial services. Alongside mitigation it offers DDoS-protected servers, VPS, cloud instances, and GRE tunnels for customers keeping their own infrastructure.
Traffic is routed through the company's cloud network by DNS redirection, so incoming requests pass BlockDOS scrubbing capacity before reaching the origin server. Attack traffic is identified and diverted at the network layer, and the network scales to match attack volume rather than relying on a fixed capacity ceiling. A web application firewall handles application-layer attacks that volumetric filtering alone does not stop, and email relay plus geo-based IP filtering keep the origin address from being exposed.
The company states more than 150 points of presence and over 10 Tbps of capacity, monitored around the clock along with customer websites. It works with multiple upstream anti-DDoS vendors rather than a single mitigation stack, and quotes a setup process of roughly thirty minutes with no bandwidth caps on protection. A free trial with no upfront cost is offered, which suits customers who want to validate mitigation against their own traffic before committing.



