On Sat, Mar 7, 2015 at 12:37 PM, Andrew Iwamoto < aiwam...@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: http://whois.arin.net/rest/asn/AS15141 Find the organization name; click on the link http://whois.arin.net/rest/org/BAUSCH-1.html Find the networks link: http://whois.arin.net/rest/org/BAUSCH-1/nets Network ResourcesBAUSCH-LOMB (NET-161-242-0-0-1 <http://whois.arin.net/rest/net/NET-161-242-0-0-1.html>)161.242.0.0 - 161.242.255.255 Look for the other RIRs; rinse and repeat. Rubens
