▲* [http://www.asnumber.networx.ch AS Number plugin for Mozilla Firefox]
* [http://www.cidr-report.org/as2.0/ CIDR and ASN assignment report update continuously]
* [http://www.cisco.com/web/about/ac123/ac147/archived_issues/ipj_9-1/autonomous_system_numbers.html Exploring Autonomous System Numbers]
* [https://web.archive.org/web/20090419042119/http://www.menog.net/meetings/menog2/presentations/philip-smith-32bit-asn.pdf 32-bit ASN presentation at Doha, Qatar in 11-2007]
* [https://web.archive.org/web/20110820080505/http://fixedorbit.com/search.htm ASN Searching and Tracing by Fixed Orbit]