Internet Domain Survey, January 1998

Number of Hosts advertised in the DNS

           |     Survey    Adjusted     Replied
     Date  |  HostCount   HostCount    To Ping*
     ------+-----------------------------------
     Jan 98| 29,670,000               5,331,640   [first NEW Survey]

     Jul 97| 19,540,000  26,053,000   4,314,410   [last OLD Survey]
     Jan 97| 16,146,000  21,819,000   3,392,000
 
     Jul 96| 12,881,000  16,729,000   2,569,000
     Jan 96|  9,472,000  14,352,000   1,682,000
 
     Jul 95|  6,642,000   8,200,000   1,149,000
     Jan 95|  4,852,000   5,846,000     970,000
 
     Jul 94|  3,212,000                 707,000
     Jan 94|  2,217,000                 576,000
 
     Jul 93|  1,776,000                 464,000
     Jan 93|  1,313,000             
     
     [* estimated by pinging 1% of all hosts]

     [adjusted host count was computed by increasing the old survey
      host count by the percentage of domains that did not respond
      to the old survey method]
 

Detailed Survey Data

• How the survey works -- what these numbers mean
• Distributions by Top-Level Domain Name (by hostcount)
• Distributions by Top-Level Domain Name (by name)
• Distributions by Host Name
• Host Count Graph (1991-1998)