Phone Validator

Our phone validator will verify, clean, and check numbers in your contact list. It works for cell and landline devices in the United States and Canada.

  • Check if a number is a cell or landline device
  • Find service provider by phone number
  • Define time zone to restrict calling times

Get 250 FREE phone lookup credits when you join today. No credit card info required.

Programmable Phone Validator

Our phone number validator can Integrate with your website, database, or any system using SOAP (Simple Object Access Protocol) or REST (Representational State Transfer) protocols.

API Documentation
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Boost Deliverability

Scrub your contact list before starting a marketing campaign to both remove any wrong numbers and verify whether phone numbers are active. This will ensure deliverability.

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Increase Conversions

Instantly verify your contacts' phone numbers, time zones, and locations to target customers more precisely and boost conversions rates.

Contact data with checkmark folded.

Reduce Typos & Errors

With phone number verification, you can correct your users' contact data immediately when they sign up for products and services on your website.

Accurate and Reliable Phone Verification Service

Number verification is essential for any company, small or large, looking to do a phone number check to identify outdated numbers in their contact list, especially before a voice or SMS marketing campaign! CDYNE's Phone Verify API has been the go-to, cost-effective solution for phone number validation since 1999. We are a company you can trust.

Free Carrier Lookup API

When you sign up for Phone Verify you will receive 250 bonus phone number lookup credits. You can validate a large chunk of your customer contact list for FREE without ever having to enter your credit card information.

Check Phone Carrier in the U.S & Canada

Validate phone numbers in the United States and Canada instantly. Plus, with the “carrier lookup by phone number” feature you can determine which contacts in your list are associated with a specific phone company.

Cell or Landline Validator

Our number validator can determine whether your contacts' phone numbers are landline or mobile devices. By using this information, you will have more success with targeting for any of your marketing campaigns.

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Feature-Packed Phone Number Validation

Create powerful phone verification applications that boost conversions and sales.

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Remove Dashes, Parentheses, & Spaces

Our phone validator API can standardize your contact list by removing any dashes, spaces, and parentheses.

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Receive Latest SMTP Email String Data

Our phone validator API can return the same email domain that person's cell phone provider would use.

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Define Time Zones to Restrict Calling Times

Increase your marketing campaign's efficiency by targeting contacts by their location in a specific country.

Person with landline and cellphone.

Landline & Cell Phone Validator

Save time and money by scrubbing your list of contacts and determining whether or not they are landlines or mobile.

What Separates CDYNE's Phone Verify from the Competition?

Pay-As-You-Go Subscriptions
Free 250 Phone Lookup Credits
No Contracts or Hidden Fees
Determine if a phone number is valid
Remove dashes, parentheses & spaces
Receive latest SMTP email string data
Define time zone to restrict calling times
Validate wireless vs landline data for compliance
Customer Support
Dedicated Account Manager
Emergency Support
Live Chat, Phone, & Email Support
Contact Sales Explore Pricing

Why Use CDYNE's Phone Verification Drop Service?

Find out whether a phone number is wireless or a landline—in real time. Even if the phone number has been ported between service providers, Phone Verification will return the latest information.

Phone Verification validates the ten digits of a U.S. telephone number and returns carrier information, plus the Location Routing Number (LRN) for telephone numbers administered by the North American Numbering Plan Administration (NANPA). LRN is a unique 10-digit number that represents a telephone switch through which multiple phone numbers are routed. The LRN enables Local Number Portability (LNP), which allows phone numbers to be ported to different carriers.

With Phone Verify, you get complete phone number information validation at a per-transaction rate.

Our Support Team Cares

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Let Us Serve You

We're constantly striving to provide quality support for all customers, seven days a week. Expect fast response times, fast troubleshooting, and easy-to-read documentation that will never leave you waiting for answers. Get in touch with us using live chat, phone, or email.

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Phone Validator Industry Leaders

We've been rated 5 out of 5 stars on Capterra, Google and Facebook – based on 35+ reviews.

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Award-Winning Company

Phone Verify API is powered by CDYNE Corporation. CDYNE has been ranked in the Inc. 5000's top 5000 companies in America six times in a row from 2012–2018. We're passionate about providing you with the best services in the industry and proving our value by driving real results.

Trusted CDYNE Customers

  • CollaborateMD
  • Teleflora
  • Quest
  • Rooms To Go
  • Southwestern Fundraising

250 Free Phone Number Lookup Credits

All first time customers will receive 250 free phone verification credits when you sign up for Phone Verify API.

Start Free Trial

No contracts, no hidden fees, and pay-as-you-go subscriptions.