The ISC Domain Survey

The Domain Survey attempts to discover every host on the Internet by doing a complete search of the allocated address space and following links to domain names. It is sponsored by Internet Systems Consortium, Inc. with technical operations subcontracted to 3waylabs. Survey data is collected and published quarterly. If you are interested in an e-mail notification for new surveys, please click here for our mailing list manager. 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 January 2012. Buy domain survey data on DVD. How the survey works Host Count History (text, 1981-present) Frequently Asked Questions License terms for survey subscription DVD-ROM data Survey Definitions ISO Country Codes Archival Data files from old surveys (through July 1997) gzipped format.
Past Results Jan 11 Jul 10 Jan 10 Jul 09 Jan 09 Jul 08 Jan 08 Jul 07 Jan 07 Jul 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