Simon Willison’s Weblog

IPy. Handy Python module for manipulating IP addresses—use IP(ip_addr).iptype() == ’PUBLIC’ to check that an address isn’t in a private address range.

Posted 24th December 2007 at 1:19 pm

Recent articles

OpenAI are quietly adopting skills, now available in ChatGPT and Codex CLI - 12th December 2025
GPT-5.2 - 11th December 2025
Useful patterns for building HTML tools - 10th December 2025

ip 4 ipaddresses 1 ipy 1 networking 22 python 1212 security 569

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