Short Code

Dedicated short codes (4-6 digit numbers) for high-throughput SMS campaigns. Higher sending rates, better deliverability, and carrier-approved for marketing and transactional messaging.

Categories

Looking for another tool?

Share

Overview

Short codes are abbreviated phone numbers (typically 4-6 digits) designed for high-volume SMS messaging. They offer higher throughput rates than long numbers, better deliverability, and are pre-approved by carriers for commercial messaging.

Advantages

Higher message throughput: send hundreds of messages per second. Better deliverability: carrier-whitelisted, lower filtering rates. Memorable numbers: easy for customers to remember and text. Two-way capable: receive replies on the same short code.

Use Cases

Marketing campaigns with high volume opt-in lists. Two-factor authentication (2FA) and OTP delivery. Voting, polling, and interactive campaigns. Customer engagement programs with keyword triggers.

We own our network

Global coverage

Order numbers in just one click in over 220 countries, including premium, vanity or toll-numbers.

Encrypted and secure

We offer state-of-the-art data encryption with HTTPS, SIP TLS & SRTP.

Reliable network

With multiple data centers and servers around the world, we offer a robust service you can rely on.

Registered carrier

We operate our own network for better performance, localization and support.

Illustrations that represent Callr's global network