OpenDNS

OpenDNS, founded in 2006, provides DNS-based internet security and connectivity services. The company began by offering recursive DNS services to consumers, aiming to deliver safer, faster, and more reliable internet browsing without requiring additional hardware or software installation. In 2009, it expanded into the enterprise market with OpenDNS Enterprise, and in 2012 launched Umbrella, a cloud-based enterprise security product that unified its business security services and extended protection to off-network devices. OpenDNS's approach relies on DNS as a filtering and enforcement layer, blocking access to known phishing and malware domains and preventing infected devices from communicating with command-and-control servers. The company also operates PhishTank, a community-driven anti-phishing database, and OpenDNS Security Labs, a research team that applies data analysis to global DNS traffic to identify threats. Its Investigate product provides threat intelligence based on DNS data analysis. The company was acquired by Cisco in 2015. Its enterprise-focused products were subsequently rebranded as Cisco Umbrella and later integrated into Cisco Secure Access, while OpenDNS-branded offerings continue to serve consumer users seeking home internet security and content filtering. OpenDNS's infrastructure uses Anycast routing to provide fast DNS resolution globally.