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IP to authoritative CIDR webservices

Subject: IP to authoritative CIDR webservices
From: nenolod at systeminplace.net (William Pitcock)
Date: Mon, 14 Dec 2009 22:57:58 -0600

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.

William

Follow-Ups:
- IP to authoritative CIDR webservices
  - From: fergdawgster at gmail.com (Paul Ferguson)
- IP to authoritative CIDR webservices
  - From: andree+nanog at toonk.nl (Andree Toonk)

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