Welcome to Lumen—the trusted network for AI. Explore our leading enterprise technology solutions for Networking, Security, Edge Cloud, Collaboration, SASE, DDoS and Managed …

The lumen (symbol: lm) is the SI unit of luminous flux, which quantifies the perceived power of visible light emitted by a source. Luminous flux differs from power (radiant flux), which …

Lumen is the world’s first portable device to measure track and analyze your metabolism. See if your body is using fats or carbs for fuel in a single breath.

Find the latest Lumen Technologies, Inc. (LUMN) stock quote, history, news and other vital information to help you with your stock trading and investing.

Lumen is a global communications services provider that ignites business growth by connecting people, data and apps—quickly, securely and effortlessly.

Explore high-speed enterprise-grade internet connectivity solutions from Lumen. Choose from dedicated, on-demand and high-bandwidth options.

Explore global Lumen locations. See addresses and telephone numbers for our headquarters and locations around the world to find support, service and more.

Access your Lumen portal to manage services and accounts.

Find amazing products for your business covering virtually any need — including communications, networking, security, managed services and more.

Dec 8, 2025 · We ignite business growth by connecting people, data, and applications – quickly, securely, and effortlessly. As the trusted network for AI, Lumen uses the scale of our network …