nanog mailing list archives
Re: IP to authoritative CIDR webservices
From: Christopher Morrow <morrowc.lists () gmail com>
Date: Wed, 16 Dec 2009 23:25:56 -0500
On Tue, Dec 15, 2009 at 12:18 AM, William Pitcock <nenolod () systeminplace net> wrote:
Hi, On Mon, 2009-12-14 at 21:12 -0800, Paul Ferguson wrote:On Mon, Dec 14, 2009 at 8:57 PM, William Pitcock <nenolod () 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.
there's also the lightish weight routeviews DNS zone data: $ host -W 6 -R 10 -t txt 50.35.2.128.asn.routeviews.org 50.35.2.128.asn.routeviews.org descriptive text "9" "128.2.0.0" "16" 128.2.35.50 lives in 128.2.0.0/16 from ASN9 -chris (thanks to joe/joel/dmm and capitan kemp)
Current thread:
- IP to authoritative CIDR webservices William Pitcock (Dec 14)
- Re: IP to authoritative CIDR webservices Paul Ferguson (Dec 14)
- Re: IP to authoritative CIDR webservices William Pitcock (Dec 14)
- Re: IP to authoritative CIDR webservices Tim Wilde (Dec 15)
- Re: IP to authoritative CIDR webservices Christopher Morrow (Dec 16)
- Re: IP to authoritative CIDR webservices William Pitcock (Dec 14)
- Message not available
- Re: IP to authoritative CIDR webservices William Pitcock (Dec 14)
- Re: IP to authoritative CIDR webservices Reed Loden (Dec 14)
- Re: IP to authoritative CIDR webservices James Raftery (Dec 15)
- Re: IP to authoritative CIDR webservices William Pitcock (Dec 14)
- Re: IP to authoritative CIDR webservices Paul Ferguson (Dec 14)
- Re: IP to authoritative CIDR webservices Andree Toonk (Dec 16)