You're looking at StableBuild's Deleted PyPI mirror - where we index all deleted packages from the Python package registry.
telco was reported malicious
OSV:MAL-2025-192363 - Malicious code in telco (PyPI)

telco

This package was deleted from PyPI around 2025-12-11. Installing fails with:
$ pip3 install telco ERROR: Could not find a version that satisfies the requirement telco (from versions: none) ERROR: No matching distribution found for telco

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/2025-12-10/ \ telco
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Or, download files manually

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1.0.1
1.0.2