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MCC: 231 Dial Code: 421 Alphanumeric Sender IDs are supported and will be maintained, no registration is required.

There are no restrictions with regards to content towards this destination.

Please make sure to always refer to our <a href="https://support.telnyx.com/en/articles/1310359-acceptable-use-policy-for-messaging">Acceptable Use Policy for Messaging</a>.

<a href="https://telnyx.com/products/sms-api" rel="nofollow noopener noreferrer" target="_blank">SMS API</a> product features

<a href="https://telnyx.com/products/mms-api" rel="nofollow noopener noreferrer" target="_blank">MMS API</a> product features

<a href="https://telnyx.com/pricing/messaging" rel="nofollow noopener noreferrer" target="_blank">Messaging API pricing</a>

<a href="https://telnyx.com/resources/sms-opt-in" rel="nofollow noopener noreferrer" target="_blank">SMS opt-in guide</a>

<a href="https://telnyx.com/resources/sms-numbers-traffic-types" rel="nofollow noopener noreferrer" target="_blank">SMS number type guide</a>

<a href="https://telnyx.com/resources/hosted-sms-how-to-guide" rel="nofollow noopener noreferrer" target="_blank">Guide to hosted SMS</a>

<a href="https://telnyx.com/resources/CTIA-SMS-guidelines" rel="nofollow noopener noreferrer" target="_blank">Mastering CTIA guidelines</a>

<a href="https://telnyx.com/resources/bulk-sms-guide" rel="nofollow noopener noreferrer" target="_blank">Guide to compliant bulk SMS</a>

<a href="https://telnyx.com/resources/how-to-ensure-compliance-with-sms-regulations" rel="nofollow noopener noreferrer" target="_blank">SMS compliance and regulations</a>

- <a href="https://telnyx.com/products/sms-api" rel="nofollow noopener noreferrer" target="_blank">SMS API</a> product features
- <a href="https://telnyx.com/products/mms-api" rel="nofollow noopener noreferrer" target="_blank">MMS API</a> product features
- <a href="https://telnyx.com/pricing/messaging" rel="nofollow noopener noreferrer" target="_blank">Messaging API pricing</a>
- <a href="https://telnyx.com/resources/sms-opt-in" rel="nofollow noopener noreferrer" target="_blank">SMS opt-in guide</a>
- <a href="https://telnyx.com/resources/sms-numbers-traffic-types" rel="nofollow noopener noreferrer" target="_blank">SMS number type guide</a>
- <a href="https://telnyx.com/resources/hosted-sms-how-to-guide" rel="nofollow noopener noreferrer" target="_blank">Guide to hosted SMS</a>
- <a href="https://telnyx.com/resources/CTIA-SMS-guidelines" rel="nofollow noopener noreferrer" target="_blank">Mastering CTIA guidelines</a>
- <a href="https://telnyx.com/resources/bulk-sms-guide" rel="nofollow noopener noreferrer" target="_blank">Guide to compliant bulk SMS</a>
- <a href="https://telnyx.com/resources/how-to-ensure-compliance-with-sms-regulations" rel="nofollow noopener noreferrer" target="_blank">SMS compliance and regulations</a>

Sending SMS to Slovakia? Check out our comprehensive guidelines to ensure compliance in Slovakia.

Slovakia: SMS Guidelines

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Slovakia: SMS Guidelines

SMS Resources for Slovakia