Akamai operates a world class CDN and is a quality investment. The company has consistently produced free cash flow, has a clean balance sheet with a total debt to equity ratio of 0, has a profit margin of 16.3% and boosts an EBIT margin of 24.7%. The company's huge network helps it to maintain its dominance as bandwidth and security needs continue to increase.
Level 3 Communications and Internap's inability to produce free cash flow is a major warning sign. The CDN world is filled with tough competition and price cutting. Akamai has been able to maintain a substantial customer base and an extensive network. Level 3 is still stuck in the past and its wholesale contracts drag it down. Internap is an interesting player to watch with its growing datacenter business, but it doesn't offer the same dominance or margins as Akama