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Why Register for A2P 10DLC?

Why Register for A2P 10DLC?

Profile Headshot of Amit Gairola
Amit Gairola

2
mins read

June 18, 2024

Why Register for A2P 10DLC

Key Takeways

The introduction of A2P (Application-to-Person) 10DLC (10-Digit Long Code) has brought significant improvements to business messaging. This system, tailored for high-volume and business-oriented SMS communications, ensures compliance, reliability, and enhanced performance.

Here’s why registering for A2P 10DLC is essential for your business:

  1. Compliance with Regulations

As of August 31, 2023, major U.S. carriers have mandated the registration of all A2P 10DLC numbers to comply with regulations set by the Campaign Registry, TCPA (Telephone Consumer Protection Act), and CTIA (Cellular Telecommunications Industry Association).  
Unregistered numbers face the risk of message blocking, increased filtering, and hefty fines. Compliance ensures your text messages or text blasts reach your audience without legal repercussions.  

  1. Enhanced Message Deliverability

Registered A2P 10DLC numbers are prioritized by carriers, reducing the likelihood of messages being flagged as spam. This prioritization leads to higher delivery rates and ensures that your critical communications are received by the intended recipients. Unregistered numbers can suffer from significant delivery issues, undermining your SMS messaging campaigns​.

  1. Improved Trust and Reputation

The Campaign Registry assigns a Trust Score to businesses based on their registration and compliance status. This score, ranging from 1 to 100, influences message throughput rates, with higher scores allowing for greater message volumes. A higher Trust Score reflects your business’s credibility and adherence to best practices, enhancing customer trust and engagement​​.

  1. Cost-Effective Messaging

A2P 10DLC offers a cost-effective alternative to short codes, which are traditionally more expensive to lease and maintain. Registration and ongoing costs for A2P 10DLC are relatively lower, making it a budget-friendly option for businesses that need to send large volumes of messages without compromising on delivery performance and compliance​.

  1. Scalability for High-Volume Messaging

A2P 10DLC supports higher throughput rates compared to traditional long codes, making it ideal for businesses that need to send large volumes of messages. This scalability is crucial for marketing campaigns, customer notifications, and other time-sensitive communications like OTP SMS, ensuring your messages are sent quickly and efficiently​.

  1. Future-Proofing Your Business Communication

The messaging landscape is continuously evolving, with increasing emphasis on compliance and regulation. We are seeing trends like silent network authentication.  

By registering for A2P 10DLC, you are future-proofing your communication strategy, ensuring compliance with current and future regulations. This proactive approach prevents potential disruptions and additional compliance costs down the line​​ for both promotional and transactional SMS.

A2P 10DLC Registration Process

Registering for A2P 10DLC involves submitting your business and campaign details to the Campaign Registry. This includes providing your EIN, business information, and examples of messages you intend to send. The process can take up to five weeks for approval. You can refer to our guide on how to register for A2P 10DLC for details.

Messaging Without A2P 10DLC

Registering for A2P 10DLC is a strategic move that offers numerous benefits, including compliance, improved deliverability, cost-effectiveness, and scalability.  

Although, there are use cases where you’d like to get started immediately like onboarding users through SMS verification. This is where service providers like Message Central come in. With the platform, you can simply use the templates with them and start sending SMS.  

You can get in touch with the team to know more.

Frequently Asked Questions

How do I choose the right OTP service provider?

When selecting an OTP SMS service provider, focus on:

  • Delivery reliability and speed
  • Global coverage and local compliance
  • Multi-channel support and fallback
  • Ease of integration
  • Pricing transparency

The right provider should not just send OTPs but ensure they are delivered consistently across regions and networks.

Not all OTP SMS service providers are built the same.

Some optimize for cost, others for flexibility but very few balance delivery reliability, global coverage and ease of use. And that balance is what actually impacts whether your users receive OTPs on time.

If OTP is critical to your product, focus on:

  • reliable delivery (not just sending)
  • multi-channel fallback
  • scalability across regions

Try It for Yourself

Why is multi-channel OTP important?

Relying only on SMS can lead to failed verifications due to:

  • network issues
  • telecom filtering
  • device limitations

Multi-channel OTP systems (SMS + WhatsApp + voice) improve success rates by automatically retrying through alternative channels if one fails.

What is the best OTP SMS service provider in India?

Some of the commonly used OTP SMS service providers in India include MSG91, Exotel and 2Factor.

That said, India has additional challenges like DLT compliance and operator filtering. Platforms that handle these internally while also offering fallback options tend to provide more consistent OTP delivery.

Which is the cheapest OTP service provider?

Providers like Fast2SMS and 2Factor are often considered among the cheapest OTP service providers, especially in India.

However, lower pricing can come with trade-offs such as:

  • lower route quality
  • higher delivery delays
  • limited fallback options

For mission-critical OTP flows, reliability often matters more than just cost.

Which is the best OTP service provider in 2026?

The best OTP service provider depends on your use case.

  • For global scale and flexibility: Twilio, Infobip
  • For cost-effective APIs: Plivo
  • For India-focused SMS OTP: MSG91, Exotel

However, platforms like Message Central stand out by balancing global coverage, multi-channel fallback and ease of deployment, making them suitable for businesses that prioritize delivery reliability.

What is an OTP service provider?

An OTP service provider enables businesses to send temporary verification codes to users via channels like SMS, WhatsApp or voice to authenticate logins, transactions or sign-ups.

Modern OTP SMS service providers go beyond just sending messages, they ensure reliable delivery using optimized routing, retries and sometimes multi-channel fallback.

Ready to Get Started?

Build an effective communication funnel with Message Central.

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