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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.