Renesys the internet intelligence provider has an interesting blog post looking at top Internet Service Providers (ISPs). Renesys is good reference source because their reports are based on hard facts and objective analysis.

Here are the top 13 in terms of  globally,  geography and market segment.

1  … Sprint
2  … Level 3
3  … Verizon
4  … NTT
5  … Global Crossing
6  … Savvis
7  … AT&T
8  … Telia
9  … Tata
10… Qwest
11… Cogent
12… China Telecom
13… Tiscali

See the Renesys blog post of the report here.

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