OpenDNS Email Format

InternetCalifornia, United States501-1000 Employees

OpenDNS, founded in 2006 and based in San Francisco, California, operates as part of Cisco's security portfolio through Cisco Umbrella. It started as a fast DNS service used by a large user base and has evolved into a network security innovator serving more than 65 million active users daily. Its enterprise offering, Umbrella, is a cloud-delivered security platform that serves as the first line of defense against internet threats by analyzing patterns in internet activity to identify both current and emerging risks. 

Umbrella is designed for deployment across organizations, providing protection wherever users access the internet and simplifying rollout by virtue of its cloud-based delivery. The company sits within the technology, information and internet sector and positions itself toward enterprise customers seeking secure, scalable internet access. In June 2026, Cisco announced plans to acquire WideField Security Inc., indicating ongoing expansion of its security capabilities.

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