Cogent Communications Holdings, Inc.

Cogent carries over one-fifth of the world's internet traffic on its network, providing high-capacity services to businesses. Cogent's corporate customers are in high-rise office buildings, where the firm provides two types of connections: dedicated internet access, which connects them to the internet, and virtual private networking, which offers an internal network for employees in different locations. Cogent's corporate customers are exclusively in North America and account for nearly half of the firm's revenue. Cogent's netcentric customers include internet service providers and content providers, to which Cogent provides internet transit. They hand traffic to Cogent in data centers and rely on Cogent to deliver it. About half of netcentric revenue is from outside the US.