# Types of Sender ID

## **Alphanumeric Sender ID**

Alphanumeric Sender ID is unique combinations of alphabetic characters and numbers utilized to represent your business identity. In certain regions, it's necessary to pre-register alphanumeric sender IDs with local carriers. Refer to our comprehensive [list of country-specific requirements](/docs/sms/sender-id/alphanumeric-sender-id-availability-and-registration.md) for Sender IDs for precise guidelines.

{% hint style="info" %}
Alphanumeric Sender ID can extend up to 11 characters in length. \
It accept a variety of characters, including both uppercase and lowercase ASCII letters and digits from 0 through 9. However, it cannot consist solely of numerals.
{% endhint %}

## **Short Code Sender ID**

A short code sender ID is a phone number consisting of three to six characters utilized for sending and receiving SMS messages. There are no limitations on the number of SMS messages you can dispatch per day using a short code sender ID, enabling large-scale communication with your customer base.

## **Long Code Sender ID**

A Long Code Sender ID is a standard phone number used to send and receive voice calls and SMS messages. These phone numbers are commonly referred to as "long codes" (10-digit numbers in many countries) when differentiating them from SMS short codes (5-6 digit numbers).

## Examples

| Sender     | Type         |
| ---------- | ------------ |
| Miatel     | Alphanumeric |
| 67788      | Short Code   |
| 6596997788 | Long Code    |


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