Because Apple frequently blocks these repositories, Nabzclan moves their domain often. As of this writing, the "hot" access point is usually a Telegram channel or a Static Repo URL for AltStore.
Occasionally, Nabzclan signs a batch of apps with a leaked Enterprise certificate. nabzclan ipa library repo hot
Here's a step-by-step guide to using the NabzClan IPA Library Repo: Because Apple frequently blocks these repositories