SMS Short Codes

A short code is a leased 5 or 6-digit number (e.g., 23329) that can send and receive SMS messages with mobile phones. They allow consumers to subscribe to mobile messaging campaigns.

Our short codes enable your application to send a high volume of text messages. Mobile Terminated (MT) or outgoing messages can be sent at a rate of up to 300 messages per second or 18,000 per minute. Mobile Originated (MO) or incoming messaging do not have any limitations. This high-throughput is great for time sensitive and general bulk SMS messages.

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SHORT CODES ARE PERFECT FOR

  • Marketing Messages

  • Critical Alerts

  • Two-Factor Authentication

  • Customer Reminders, Updates, & Notifications

  • Bulk/Mass Broadcasting

  • Automated Text Messages

  • Two-Way Messaging

No Limit

Send an unlimited amount of messages per day.

Personalize

Make your brand recognizable with a customized short code or have one assigned to you by the carriers.

Going Live

CDYNE handles the 8-12 week dedicated short code provisioning process for you.

Track

View delivery receipts and content of received messages on your Postback URL.

TYPES OF SMS SHORT CODES

23329

VANITY
(Custom/Personalized)

A specific number that you choose when you lease your short code.

RANDOM
(Generic)

Assigned to you when you lease it and cannot be reviewed or exchanged.

Learn more about the differences between vanity and random short codes.

THINGS TO KNOW ABOUT SHORT CODES

  • Short codes can only be leased. In the U.S., short codes are available in three-, six-, or twelve-month terms.
  • Short codes must be activated in each country, and only give access to cellular carriers within that country. For example, messages on a U.S. short code may only be sent to recipients in the U.S. Additionally, not all international carriers support short codes.
  • SMS short codes do not support voice capabilities. If interested in both SMS and voice, a long code is recommended. Learn more about the differences between long and short codes.
  • Keywords can be used with short codes.
  • Short code usage requires carrier approval which is done through a short code provisioning process that CDYNE will handle and may take up to three months to approve. Download the Guide to the Short Code Application Process.
  • At all times, text messages must be in accordance with applicable federal and state laws, rules, and regulations and proof of recipient opt-in or explicit consent are required. Read more about the text guidelines.

THE CDYNE ADVANTAGE

CDYNE will automatically split message longer than 160 characters (U.S) and 136 characters (Canada) into two or more messages for delivery.

You can migrate your short code to CDYNE from another gateway easily.

With a dedicated short code, you can have unlimited keywords.

CDYNE's long code back up feature will send any message out using the phone numbers if they cannot be delivered for any reason from the short code.

CDYNE SMS Notify! includes keyword management features in an effort to uphold applicable federal and state laws, rules and regulations.

SMS Notify!'s short and long codes support sending or receiving MMS.

SMS Notify! is supported by most U.S. carriers and Canada carriers: short code and long code.

Competitive use-based SMS pricing with no hidden fees.

Real-time message traffic reporting.