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DNS Load Balancing Report
April 1st, 2007

Report Description
This report details the number of web servers that have their name resolve to multiple IP addresses. Presumably, this is for the purpose of providing redundancy and load balancing.

Of the 28,074,454 sites in the March survey that responded to our DNS lookup queries,1,595,289 (5.7%) had their names resolve to multiple IP addresses. The following graph and table shows how popular the various DNS configurations are that contain multiple IP addresses.

DNS Entries Number of Servers Percent
2558,38235.0%
3194,30412.2%
4247,00515.5%
561,8323.9%
6123,9457.8%
765,2174.1%
8279,72517.5%
91,7900.1%
107,6360.5%
1114,8470.9%
125990.0%
13570.0%
1436,1152.3%
153,3450.2%
16760.0%
17270.0%
181660.0%
1910.0%
201530.0%
21110.0%
2290.0%
2340.0%
2430.0%
2560.0%
2640.0%
30190.0%
3410.0%
3880.0%
4110.0%
6810.0%




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