MCC: 230
Dial Code: 420
Alpha Sender ID registration is required for Network T-Mobile (23001).
Outside of this network, Alphanumeric Sender IDs might be overwritten to either Generic Alphanumeric or Numeric Sender ID.
Please make sure to always refer to our Acceptable Use Policy for Messaging.
For more information on Alpha Sender ID registration kindly reach out to alpha_sender_id@telnyx.com.
Czech Republic (Czechia): : SMS Guidelines
Written by Telnyx Engineering. Updated over a week ago
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