FYI: Internet Domain Survey, April 1993


Please find below a global hostcount as done by SRI every quarter.
Apologies to everyone who already received this survey.

-Marten

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Date:     Wed, 21 Apr 93 11:28:53 PDT
From:     SRI NISC nisc@localhost
Sender:   ietf-request@localhost
To:       ietf@localhost
cc:       nisc@localhost
Subject:  Internet Domain Survey, April 1993

Network Information Systems Center                               April 1993
SRI International                                    Internet Domain Survey

 The Domain Survey attempts to discover every host on the Internet by doing a
 complete search of the Domain Name System.  The latest results gathered
 during mid-April 1993 are listed.  For more information see RFC 1296; for
 detailed data see the pub/zone directory on ftp.nisc.sri.com.  This survey
 was done using the census program developed at the University of California
 on Santa Cruz; see technical report UCSC-CRL-92-34 on host ftp.cse.ucsc.edu.
 The statistics below were generated by running the collected host data
 through a number of utility programs.
                                                          -- Mark Lottor


     Number of Hosts and Domains Advertised in the Domain Name System

          April 1993     Jan 93     Oct 92    Jul 92    Apr 92  Change Apr-Apr
 ==============================================================================
 Hosts:    1,486,000  1,313,000  1,136,000   992,000   890,000    67%
 Domains:     22,000     21,000     18,100    16,300    20,000    10%

 Number of Advertised Hosts Responding to a Ping:  421,000  (28%)


                  Number of Networks (based on DNS IP addresses)

          April 1993     Jan 93     Oct 92    Jul 92    Apr 92  Change Jul-Apr
 ==============================================================================
 Class A:         58         54         52        60              -4%
 Class B:       3409       3206       2985      2714              25%
 Class C:       6255       4998       4468      3795              64%
 Total:         9722       8258       7505      6569       n/a    48%


                Host Distribution by Top-Level Domain Name

    467897 edu    22508 fi      3463 be        677 cl         60 ec
    406464 com    21791 no      2693 cs        431 hr         29 cy
     93456 gov    21662 mil     2609 nz        332 si         20 cr
     74959 de     11873 net     2392 pl        206 ve         17 tn
     73321 au     11102 it      2319 pt        168 ee         15 ro
     71518 uk     10590 at      1992 br        153 lu          8 lv
     60314 ca      7883 es      1731 ie        135 ar          6 gb
     37380 fr      5880 hk      1512 sg        116 cz          4 aq
     32684 org     5789 za      1250 mx         99 my          2 yu
     30114 nl      5713 dk      1056 is         96 in          2 li
     29593 se      5269 kr      1008 gr         88 int         1 bg
     27203 ch      5041 tw       956 us         84 su
     25948 jp      4144 il       814 hu         69 th

                Host Distribution by Top-Level Domain Name
                      of Hosts Responding to a Ping		

    158038 edu     6862 nl       938 nz        187 hu         15 th
     74199 com     6478 net      686 za        132 hr         10 cr
     35108 gov     5289 fi       633 mx         95 si          5 lv
     24639 de      4088 it       601 br         84 ee          4 gb
     21370 ca      3734 org      540 cs         48 lu          2 yu
     19516 uk      2571 at       477 pt         43 my          2 ro
     14297 au      2096 tw       453 pl         43 in          2 li
     12189 fr      1996 es       375 gr         39 cz          1 tn
     11620 jp      1794 dk       269 ie         33 ve          1 bg
      8525 ch      1495 il       253 sg         30 int
      8459 no      1454 kr       232 us         26 cy
      8410 mil     1179 be       230 cl         21 ar
      8365 se      1013 hk       222 is         18 ec


                              Top 50 Host Names

     693 venus     518 pc2       406 mac4      360 mac6      341 mac13
     660 cisco     514 saturn    398 eagle     358 sirius    340 fred
     647 pluto     510 charon    391 mac10     357 titan     330 mac9
     595 mars      471 iris      384 mac5      348 mac7      330 mac14
     592 pc1       467 mercury   374 gauss     347 mac12     325 calvin
     576 zeus      448 mac3      373 hermes    344 merlin    324 mac15
     554 mac1      440 orion     372 pc4       344 mac11     321 pc5
     551 jupiter   435 pc3       368 apollo    344 hobbes    321 athena
     531 gw        417 newton    365 alpha     342 gateway   319 phoenix
     526 mac2      414 neptune   361 thor      341 mac8      313 mac16


                Frequently Asked Questions about the Domain Survey

 What do all those domain names stand for?
    See pub/zone/iso-country-codes on ftp.nisc.sri.com.

 Why do only 28% of the advertised hosts answer a ping?
    Many advertised hosts are behind firewalls that only allow email
    to get through.  Technically, they would not be considered hosts
    that are directly on the Internet.  Some pings are probably lost
    due to links being down, and/or problems with the pinging process.

 Where can I get more information?
    See the pub/zone directory on ftp.nisc.sri.com.

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