Hi, On Mon, 2009-12-14 at 21:12 -0800, Paul Ferguson wrote: > On Mon, Dec 14, 2009 at 8:57 PM, William Pitcock > <neno...@systeminplace.net> wrote: > > > Hi, > > > > Does anyone know of a webservice that converts a given IP into the > > public CIDR range that belongs to? I am developing a tool where IP to > > CIDR conversion based on RIR whois data would be useful for implementing > > filtersets. > > > > WHOIS? > > Alternatively, use the Team Cymru tool to find the AS, then the CIDR Report > portal to determine all perfixes originated by the AS in question: > > http://asn.cymru.com/
Looks like their WHOIS server in verbose mode will do the trick for what I want, as it provides predictable output. Thank you. William
