ASN to IP Mapping
rubensk at gmail.com
Sat Mar 7 21:12:50 UTC 2015
On Sat, Mar 7, 2015 at 12:37 PM, Andrew Iwamoto <
aiwamoto at unleashed-technologies.com> wrote:
> Is there a tool or method to determine IP blocks assigned to an
> organization by ASN? I.e. if I have an organization's ASN number I want to
> know all blocks assigned to that ASN.
That's RIR/NIR-dependent, so you probably have to go thru all of them to
map all possible IP blocks. Other references suggested bgp.he.net that will
only list advertised networks, and IRRs will only have IRR-listed networks.
For instance, on ARIN for AS 15141:
Find the organization name; click on the link
Find the networks link:
Network ResourcesBAUSCH-LOMB (NET-161-242-0-0-1
Look for the other RIRs; rinse and repeat.
More information about the NANOG