Phone Verification API
Verify and validate phone numbers within seconds
Verify and validate phone numbers through personalised OTP messages, SSN trace, and advanced identity verification solutions. Onboard new users, validate existing ones, and get comprehensive data associated with a phone number and device.


<5s
API response time
100M+
phone numbers verified
2x
More Fraud Detection
Trusted by industry leaders
Everyone has a phone, why not use it to build trust?
Phone verification is the easiest way to detect fraudsters and onboard honest users
Verify new users instantly with OTP authentication
Streamline your user onboarding with real-time phone verification. Our 4 or 6 digit one-time password (OTP) system delivers instant verification codes, allowing legitimate users to access your services without delay. Convert and onboard users quickly with instant phone number verification that completes in seconds.

Get an additional layer of security for your business
Protect your platform from fraudulent accounts and unauthorized access with robust phone verification. By confirming that real users are behind each account, you create trust in your business operations. This extra security layer helps prevent account takeovers, spam accounts, and potential fraud attempts before they can impact your business.

Protect against security breaches
Protect yourself from security breaches with our advanced security features. We use advanced encryption, secure server-side storage, and regular security audits to protect your sensitive user data.

Let’s not keep your new users waiting
Validating a new user shouldn’t take more than a few seconds!
Steps:
Solutions for all your mobile verification needs
Here’s everything you can do for your business with our Phone KYC suite
OTP Verification
OTP Verification enables secure user authentication by validating phone numbers through automated one-time passwords and delivers instant verification codes to confirm successful authentication.
Identity Verification
Signzy’s IDV Lite and IDV Advance APIs use a phone-first approach to validate user-provided personal identifying information (PII) and confirm ownership of their phone number using authoritative data like device and phone number tenure data.
Phone number Verification
The Phone Number Intelligence API provides a detailed analysis of each identifier's risk level with the single input of phone number, and also generates a risk score, indicating the potential risk associated with the current transaction.
SSN Trace API
Social Security Trace fetches the name and address history of a user and also confirms whether the Social Security number is valid and matches the candidate’s name and address history.
1 phone number — endless use cases
Signzy’s Phone Validation API has a wide range of use cases across domains
New User Onboarding
Legal Compliance
2-Factor Authentication
Transaction Validation
Customer Support
Account Recovery
Strengthen your security with end-to-end verification solutions
Your business is unstoppable - so why should we stop at OTP verification?
Email Verification
Verify user identities by capturing only verified email addresses. Get details if an email ID is non-existent, inactive, disposable, or mistyped. Also extract personal details of the user and company information.
Domain Verification
Verify a domain and ensure business legitimacy and status. Extract essential information like legal name, founding year, location, contact details, business operations, etc.
Developers love us for a reason!
Integrate the API during lunch hour, customize based on your needs, and go live within 2-4 weeks!

FAQ
What are the use cases of phone verification?
Phone verification ensures security, prevents fraud, and validates user authenticity across industries. It helps with user onboarding, two-factor authentication (2FA), and KYC compliance.
Businesses in finance, e-commerce, telecom, healthcare, and travel use it to secure transactions, verify accounts, prevent fake users, and enable safe communication, enhancing trust and reliability.
What are the benefits of using the Phone Verification API?
Implementing phone verification enhances security by confirming user identities, reduces fraudulent activities, and ensures that the contact information collected is accurate and up-to-date.
Is the API compliant with global data protection regulations?
Signzy's API is designed to adhere to international data protection standards, ensuring that user data is handled securely and in compliance with relevant regulations.
How does the API help in reducing fraud?
By verifying the authenticity of email addresses and retrieving associated information, the API helps identify and filter out invalid or potentially fraudulent entries, thereby reducing the risk of fraud.
What is the typical response time for the Phone Check API?
The API is optimized for real-time verification, typically delivering data within seconds, ensuring a seamless user experience.
Does the API handle international phone numbers?
Yes, the API supports phone numbers across 180+ countries, allowing businesses to verify users across different countries!
How can I get support if I encounter issues with the API?
You can troubleshoot through our documentation or get in touch with us through connect@teamsignzy.com