
Understanding SMS Routes on Ankarex.io – LLC, Shortcode, SID, Fixed & Mixed LLC-Shortcode
Choosing the correct SMS route type is essential for effectively reaching your audience. Ankarex offers multiple routing options designed to fit various business needs. In this guide, we'll explain each route clearly, helping you decide which one best suits your use-case.
SMS Route Types and Their Differences
1. LLC (Long Code Number - SIM) SMS Route
- Description: LLC routes use standard phone numbers, typically virtual numbers resembling regular mobile numbers.
- Characteristics:
- Cost-effective.
- Great for person-to-person communication.
- Supports conversational interactions.
- Lower throughput; suitable for smaller batches.
Example:
+10939393999
Hello, how are you doing today?
2. Shortcode SMS Route
- Description: Shortcodes are typically 5-6 digit numeric codes.
- Characteristics:
- High throughput capability.
- Great for marketing campaigns or alerts.
- Easy to remember and highly recognizable.
- Higher cost compared to LLC.
Example:
50432
Your verification code is: 98453
3. SID (Sender ID) SMS Route
- Description: Alphanumeric Sender IDs allow businesses to use a custom sender name.
- Characteristics:
- Branding-friendly.
- Usually allows up to 11 alphanumeric characters.
- Often used for notifications, OTP, and transactional messages.
- Cannot receive replies.
Example:
ANKAREX
Your package has been shipped and is on its way!
4. Fixed SMS Route
- Description: A dedicated route, typically from a single number consistently used for communications.
- Characteristics:
- Predictable and consistent sender identity.
- Ideal for businesses needing stable sender identification.
- Typically used in trusted, ongoing communication.
Example:
+10939888888
Your monthly statement is ready. Visit our website to download it.
5. Mixed LLC-Shortcode SMS Route
- Description: Combines benefits of both LLC and Shortcodes by dynamically adjusting routes based on message type or campaign needs.
- Characteristics:
- Enhanced flexibility and efficiency.
- Ideal for companies running diverse SMS campaigns.
- Balances cost and performance dynamically.
Example:
Shortcode (Alerts): 50432
Verification code: 49845
LLC (Conversational): +10939393999
Hi John! Thanks for contacting support, how can we assist today?

Quick Comparison Table
| Route Type | Number Type | Throughput | Replies Supported? | Branding | Use Case |
|------------|-------------|------------|--------------------|----------|----------|
| LLC | Standard | Low | ✅ | ❌ | P2P communication |
| Shortcode | Short Number| High | ✅ | ❌ | Marketing, verification |
| SID | Alphanumeric| Medium-High| ❌ | ✅ | OTP, branding |
| Fixed | Standard | Medium | ✅ | ❌ | Trusted, stable identity |
| Mixed | Combination | Variable | ✅ | Partial | Flexible campaigns |
Choose the right SMS route for your business needs and maximize your outreach efficiency with Ankarex.io!