Subject: Jan '99 Internet Domain Survey Results

From: Mark Lottor <[email-masked]>
Date: Mon, 15 Feb 99 1:08:44 PST

Internet Domain Survey            Network Wizards            January 1999

                                 http://www.nw.com

The Domain Survey attempts to discover every host on the Internet by doing
a complete search of the Domain Name System.  The latest survey was done
during late January 1999.  The complete results can be found on our web
site.  Here is a summary of the more interesting things:
                                                          -- Mark Lottor

Hosts found (number of PTR records):              43,230,000

Hosts pingable:                                    8,426,000
 [estimated by pinging 1% of total hosts found]

Top 10 TLDs (number of hosts):
 com   12140747         mil    1510440
 net    8856687         uk     1423804
 edu    5022815         de     1316893
 jp     1687534         ca     1119172
 us     1562391         au      792351

Top 10 second-level domains (number of hosts):

 1667245 aol.com                 585233 co.uk
 1238252 uu.net                  505645 ne.jp
  848820 ans.net                 485316 bbn.com
  708159 ac.uk                   424038 or.jp
  637202 af.mil                  403169 att.net

Top 10 third-level domains (number of hosts):

 1657627 ipt.aol.com             296541 pub-ip.psi.net
 1213999 da.uu.net               280735 demon.co.uk
  817846 dialup.ans.net          226000 k12.ca.us
  465891 saturn.bbn.com          181681 us.ibm.net
  400796 dial-access.att.net     145918 k12.mn.us

Top 10 hostnames:

  872992 www                      17225 ns
  141835 host                     14759 ftp
   84130 mail                     13680 gw
   62756 dummy                    10102 server
   22849 router                    9884 user