ICSC survey 2007: DNS domains: .com 1.2M, .net 253K, .org 141K, .edu 4K<br>
#hosts: 1993 1.3M, 2007 433M
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Schematic of Internet<br>
<img src="Images/archtect.gif" />
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<img src="Images/tieredpeeringinternet.gif" />
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<img src="Images/internetkey.gif" />
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Verio, a tier 1 ISP<br>
<img src="Images/verio-usa.jpg" />