Upcoming Changes to ARIN Issued Reports

Posted: Tuesday, 19 May 2015

In June, ARIN will be modifying the daily email report sent to the ARIN-Issued mailing list. Each report will contain Autonomous System Number (ASN) assignments in addition to the IPv4 and IPv6 assignments
and allocations already contained in these reports.

This modification is in response to ARIN Suggestion 2014.27: Daily Report of ARIN-issued AS Numbers. To subscribe to the ARIN-Issued mailing list, visit:


The format will add ASNs to the existing report as follows:

Remove AS<number>-AS<number>
Remove AS<number>
Add AS<number>
Add AS<number>-AS<number>

Where <number> is either a 2- or 4-byte ASN.


Mark Kosters
Chief Technology Officer
American Registry for Internet Numbers (ARIN)