Hi HN! I run a link shortening service (https://y.gy), and I kept running into a problem where users were submitting spam links that were cloaked via other link shortening services.
One of the solutions was to index and ban all other link shorteners. I'm making this index public and easily available in the hope that some of you may also find it helpful for reducing spam.
Show HN: A Python and JavaScript package of 100 link shorteners | Heykuki News