https://www.truecaller.com/ https://www.truecaller.com/ does this to a certain extent. Users flag phone numbers / caller IDs as spam, giving you the discretion

https://www.truecaller.com/ https://www.truecaller.com/ does this to a certain extent. Users flag phone numbers / caller IDs as spam, giving you the discretion to block, whitelist, or subscribe to lists to autoblock common spam callers similar to adblock plug-ins.