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<nettime> OCLC web stats
t byfield on Fri, 10 Sep 1999 14:40:59 +0200 (CEST)


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<nettime> OCLC web stats


<http://www.oclc.org/oclc/research/projects/webstats/statistics.htm>

   OCLC Logo Up One Level OCLC Home Page Search Site Map What's New
   
June 1999 Web Statistics

   Note: Confidence intervals are reported at the 95% level
   
   View a brief explanation of the statistics.
   Number of IP addresses in 32-bit address space: 4,294,967,296
   Number of IP addresses in the 0.1% random sample: 4,294,967
     _________________________________________________________________
   
   Web Size
   Number of Web Sites: 4,882,000
   (+/- 3%)
   Number of Unique Web Sites: 3,649,000
   (+/- 3%)
     _________________________________________________________________
   
   Web Site Categorization (Unique Sites)
   Number of Public Web Sites: 2,229,000
   (+/- 4%)
   Number of Private Web Sites: 389,000
   (+/- 10%)
   Number of Provisional Web Sites: 1,031,000
   (+/- 6%)
     _________________________________________________________________
   
   Public Web Sites (Unique Only)
   Number of Web Pages: 288,221,000
   (+/- 35%)
   Number of Files:
   
                                                              500,491,000
                                                                         
   Number of Adult Sites:
   
                                                                   42,000
                                                                (+/- 30%)
     _________________________________________________________________
   
   Web Growth 
   1997 1998 1999
   Web Sites: 1,570,000 2,851,000 4,882,000
   Unique Sites: 1,230,000 2,035,000 3,649,000
   Unique Public Sites:
   
                                                                  800,000
                                                                         
                                                                1,457,000
                                                                         
                                                                2,229,000
                                                                         
   % Change:
   
                                                               '97 to '98
                                                                         
                                                               '98 to '99
                                                                         
                                                               '97 to '99
                                                                         
      Web Sites:
   
                                                                       82
                                                                         
                                                                       71
                                                                         
                                                                      211
                                                                         
      Unique Sites:
   
                                                                       65
                                                                         
                                                                       79
                                                                         
                                                                      197
                                                                         
      Unique Public Sites:
   
                                                                       82
                                                                         
                                                                       53
                                                                         
                                                                      179
     _________________________________________________________________
   
   Web Volatility
   IP addresses identifying a Web site in 1998 that no longer identify a
   Web site in 1999:
   
                                                                     44 %
     _________________________________________________________________
   
   The statistics and results presented on this site are part of an
   ongoing research effort. They may be revised or updated at any time.
   
    Copyright 1999 OCLC Online Computer Library Center, Inc. 6565 Frantz
   Rd. Dublin, Ohio 43017-3395 USA
   
                     Last Updated on September 9, 1999

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