Cogent Communications. Cogent is one of the world''s largest Internet Service Providers, delivering high-quality Internet, Ethernet and Colocation services.. Internet Service Provider, ISP, Dedicated Internet Access, IP Transit, Bandwidth, Ethernet Point-to-Point, Ethernet MPLS, Colocation, Data Center, Tier 1 Network, Global Backbone, Wholesale Bandwidth, Interconnected Network, IP Backbone, Fiber Internet, Business Internet, Local Area Network, Wide Area Network, Carrier Ethernet, Packet Delivery, Network Availability, Low Latency, Network Performance, Ethernet Private Line, Ethernet Transport