This is to let you know that we have updated the AS Numbers registry in
cooperation with the RIRs. It now shows which RIR currently provides Whois
service for an AS Number instead of the RIR to which the AS Number was
The updated registry is now over 2000 lines long but the format has not
changed. In addition to the current format, the AS Numbers registry will be
made available in XML during July.
The updated registry will shortly be available at: