You're looking at StableBuild's Deleted PyPI mirror - where we index all deleted packages from the Python package registry.

ipv4ac
1.0.0b0

This version was deleted from PyPI around 2024-03-12. Installing fails with:
$ pip3 install ipv4ac==1.0.0b0 ERROR: Could not find a version that satisfies the requirement ipv4ac==1.0.0b0
View other deleted versions of ipv4ac

Install through StableBuild

You can install this package from StableBuild's PyPI snapshots from before the version was deleted:
pip3 install \ -i https://YOUR_API_KEY.pypimirror.stablebuild.com/2024-03-11/ \ ipv4ac==1.0.0b0
Sign up for StableBuild to get an API key (it's free and takes <60 seconds!)

Or, download files manually

And install manually via pip:
ipv4ac-1.0.0b0-py3-none-any.whl (3.1KB)
ipv4ac-1.0.0b0.tar.gz (2.7KB)