Yes, we offer 2 options to block incoming calls to any number.
1. WHITE-LISTS We offer a white-list for you to add only the numbers permitted to call your Did Numbers and Free Call In Numbers.
2. IP ADDRESS This option is only available for the more advanced users, if you know the IP Address of your client phone, you can add an Ip Address to allowed Ip addresses.
IP address is the most secure way of blocking access to your numbers. Please contact support with your request.