ISC Internet Domain Survey

The Domain Survey attempts to discover every host on the Internet by doing a complete search of the Domain Name System. It is sponsored by Internet Systems Consortium, Inc. with technical operations subcontracted to Network Wizards. Survey data is collected and published quarterly. If you are interested in an e-mail notification for new surveys, please click here. Additional data related to the survey may be purchased from ISC. For more information, please contact survey@isc.org.

Domain Survey Information The latest survey results available online are for Jan 2008 - Buy the latest domain survey (Jan 2008) data on DVD. How the survey works. Host Count History (text, 1981-present) Frequently Asked Questions More information about the detailed data behind the survey. License terms for survey subscripion DVD-ROM data. Survey Definitions ISO Country Codes RFC 1296: Internet Growth (1981-1991). How the old survey worked. Data files from old surveys (through July 1997) gzipped format.
Past Results Jul 07 Jan 07 July 06 Jan 06 Jul 05 Jan 05 Jul 04 Jan 04 Jan 03 Jul 02 Jan 02 Jul 01 Jan 01 Jul 00 Jan 00 Jul 99 Jan 99 Jul 98 Jan 98		Old Results Jul 97 Jan 97 Jul 96 Jan 96 Jul 95 Jan 95
Related Documents The RIPE Region Hostcount The Netcraft Web Server Survey GVU Center's WWW User Survey Cooperative Association for Internet Data Analysis Growth of the World Wide Web (through 1996) The Internet Society