To block spam calls on your phone, turn on Filter spam calls. You don't get missed call or voicemail notifications, but filtered calls are in your call history, and you can check your voicemail.
Caller ID by Google shows the names of companies and services with a Google My Business listing. It also looks for directory matches that show caller information for work or school accounts. Caller ID may show a business category. source
Google.Phone app is available on most Android devices running Android v9.0 and above.
alternative :
- CallBlocker - feature-rich call-spam fighting app, enter numbers to be blocked with wildcards
- YetAnotherCallBlocker - blacklist with wildcard support, blocks calls with negative rating automatically, uses offline database
- (in-app purchases) Should I Answer? - block call when number is........"not stored in contacts". (2020 version - no tested)
In case you don't want to install any extra application, enable to receive calls only from Contacts via :