To confirm the Nomorobo App is working, simply open the app and tap 'Send Me a Test Robocall'
Depending on what you have the app set to, Identify or Send Directly to Voicemail, you will get an immediate robocall, and you can see how the app handles it.
**If the test robocall neither rings nor is sent to voicemail, be sure to check your blocked call list and ensure the number (202) 759-0375 is not listed**
For iOS: Go to Settings > Phone > Call Blocking & Identification
For Android: Open your device's Phone App > More > Settings > Blocked Numbers