Sinch Scheduled Maintenance - Number Lookup API - MCC/MNC Mapping Update for T-Mobile

Scheduled for May 28, 07:00 - 10:00 UTC

Scheduled

Please be advised that on May 28, Sinch will update the MCC/MNC mapping for T-Mobile in the USA for our Number Lookup API service.

The current mapping of 310/120 will be changed to 310/260.

We expect no service disruption. If your systems have a direct dependency on MCC/MNC values for T-Mobile, please update your configuration accordingly.

We appreciate your patience and apologize for any inconvenience experienced during this maintenance period. If for any reason the maintenance is extended or cancelled we will advise you accordingly. Please contact support@sinch.com for further information.
Posted May 18, 2026 - 03:02 UTC
This scheduled maintenance affects: Number Lookup API v2 (API).
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