Keep Customers Safe and Your Business Secure
Verify new users, protect accounts and transactions, and build trust with two-factor authentication and one-time passcodes.
Core Capabilities
Verify Users
Identify mobile and landline numbers and ensure correct formatting to maximize messaging efficiency and deliverability.
Authenticate Transactions
Prevent fraud and stay compliant with consumer protection regulations by requiring customers to confirm transactions via two-factor authentication.
Protect Accounts
Ensure logins from new devices or locations are authentic, giving your customers peace of mind about who's accessing their accounts.
Fallback Options
If an SMS can't be delivered, fallback methods like text-to-speech ensure your verification codes still get through every time.
Use Cases
OTP — One-Time Passcodes
Take control of verification by generating and validating codes yourself — we handle the messaging delivery via SMS, Voice, or any supported channel.
2FA — Two-Factor Authentication
Our 2FA API generates and sends verification codes, then confirms them for you — making it simple to implement multi-factor authentication.
Channel & SDK Integrations
Connect via Channel APIs or drop-in SDKs for PHP, Java, and more. Supports mobile and landline number verification with multi-language message templates.
Voice API (Text-to-Speech)
Deliver passcodes as automated voice calls — a critical fallback for users who cannot receive SMS, with custom passcode generation and length support.
Why TeleSystems for Verification?
TeleSystems powers enterprise-grade messaging services across 800+ global carriers, ensuring reach, reliability, and regulatory compliance with every message.
Global Reach
Connected to carriers in nearly every country, we reach your customers wherever they are with consistent, reliable verification delivery.
Intelligent Routing
Our system evaluates message routes in real-time to ensure your verification codes are delivered efficiently and on time.
Fallback Options
If an SMS can't be delivered, fallback methods like text-to-speech ensure your codes still get through — zero verification failures.
Ensure Delivery
Maximize message delivery rates with intelligent routing, automatic retries, and real-time delivery tracking across all channels.
Want to Reach More Customers?
Deliver verification messages that get through and drive real security outcomes.