There is free service called Certstream [0]. It does not provide notifications, you need to ingest the stream, look for the patterns of interest to you and hand

There is free service called Certstream [0]. It does not provide notifications, you need to ingest the stream, look for the patterns of interest to you and handle notifications by yourself. But it's fairly easy and the service is commonly used by security teams. [0] https://certstream.calidog.io/ https://certstream.calidog.io/