Simple phone validation
for everyone
Remove fake phone numbers and spam users from your contact lists. Validate if a phone number is valid ⏱️ in under 0.5 seconds.
"Telephone.so" delivers all we need in a phone validation service: top security, scalability, performance, and extensive integrations”.
A happy customer, probablyWhat does this exactly do?
tl;dr — Remove invalid phone numbers, block fake users and bots, preventing fraud, and 💸 saving thousands of your precious dollars.
What can I use this for?
Phone Marketing
A small business owner or marketer trying to promote your products or services through phone campaigns.
Prevent you from calling invalid phone numbers, which can waste resources and affect your campaign efficiency.
Spam Signups
Running a website with a user signup page, or a newsletter subscription form that asks for a phone number.
Detect invalid phone numbers before they register, prevent spam and fake users, and maintain a high-quality user database.
Fraud Prevention
An online retailer or service provider who wants to prevent fake accounts from being used at checkout.
Detect disposable phone numbers, catch users trying to use multiple accounts, and prevent fraud instantly.
"Telephone.so" delivers all we need in a phone validation service: top security, scalability, performance, and extensive integrations”.
Another happy customer, maybetough as a brick.
Try us out in a second, integrate us in a minute, and stick with us forever.
Don't overthink it — we're fast (🚀 ~500ms) and always open (🫀 99.999% uptime).
I'm sold. How much is it?
tl;dr — if you're validating one phone at a time, free forever. If you need to validate whole lists or plan to integrate, it's super cheap.
Single validation
If you just want to check a few phones from time to time or you're just testing out the service, it is completely free as long as you validate one phone at a time.
Start for freeLists or API
For advanced use cases where you need to check multiple phones at once, or you're integrating our validator with your service. 90% off for your first month!
Ger started