Telnyx has launched Wireless Blocklists, giving you precise control over where your SIMs connect, by country or by carrier. This feature helps you align connectivity with your organization’s security, compliance, and cost-management policies, ensuring every SIM operates only in approved regions and networks worldwide.
Built for granular control, Wireless Blocklists let enterprises define and manage connection permissions via API, making it easy to restrict SIM activity to preferred locations and carriers across global deployments.
Wireless Blocklists let you block entire countries or individual mobile operators using standardized identifiers:
You can create, modify, and delete these blocklists, apply them to SIM groups, and view active restrictions directly within SIM group information, all via API.
When a SIM attempts to attach to a network, Telnyx checks the connection request against your active blocklists:
If the MCC or PLMN matches a blocked entry, the SIM’s connection attempt is denied.
These blocked attempts are logged and viewable in your connectivity logs within the Mission Control Portal, giving you full visibility into when and where restrictions are applied.
Prevent High-Cost Roaming Block SIM connectivity in regions with expensive roaming rates and control spend at scale.
Increase Security and Compliance Limit where devices can connect to prevent unauthorized or non-compliant usage.
Granular Carrier Control Apply restrictions at the carrier level using PLMN identifiers for precise network management.
Full API Control Create, manage, and apply blocklists programmatically for large-scale or automated deployments.
Real-Time Visibility Track and audit blocked attempts directly in the Mission Control Portal.
Due to 3G network architecture constraints, when applying any blocklist to a SIM, 3G data services are disabled across the footprint.
This design aligns with the global sunset of 3G networks and reflects current industry and infrastructure standards.
Sign up or log in to your Telnyx Mission Control Portal account and follow the steps:
Learn more in our Wireless Blocklist API documentation.
