Yes, there is an option in BlackBerry Z30 mobile to keep a mobile number in the blocked list.
To block a mobile number on your BlackBerry Z30, follow these steps:
Open the Phone app.
Tap the Menu key.
Tap Settings.
Tap Call Blocking.
Tap Add.
Enter the phone number you want to block in the Phone Number field.
Tap Save.
Once you have blocked a phone number, you will no longer receive calls or text messages from that number.
To unblock a phone number, follow these steps:
Open the Phone app.
Tap the Menu key.
Tap Settings.
Tap Call Blocking.
Tap and hold the https://classydatabase.com/cell-phone-number-list/ you want to unblock.
Tap Unblock.
Note: Depending on your wireless service provider, you may also be able to block phone numbers from your carrier's website or customer service department.
Here are some additional things to keep in mind about blocking phone numbers on your BlackBerry Z30:
You can block up to 50 phone numbers.
Blocked phone numbers will still be able to leave voicemails, but you will not receive a notification when they do.
You can still view blocked phone numbers in your call history.
Blocked phone numbers will still be able to send you text messages, but you will not receive them.
If you are having trouble blocking a phone number on your BlackBerry Z30, contact your wireless service provider for assistance.