Today, AWS End User Messaging expands SMS protect capabilities with phone number rules. With phone number rules, you can explicitly block or allow messages to individual phone numbers overriding your country rule settings.
You can use the new rules to fine tune your messaging strategy. For instance, you can use “block” rules to stop sending messages to specific numbers where you see abuse, helping you avoid unnecessary SMS costs. The phone number rules can be configured in the AWS End User Messaging console or accessed via APIs, enabling seamless integration with customer data platforms, contact centers, or other systems and databases that you integrate with.
To learn more and start using phone number block/allow rules, visit the AWS End User Messaging SMS User Guide.
Source:: Amazon AWS