TelephoneStop wasting money on bad phone numbers
Invalid numbers kill your delivery rates, waste SMS credits, and tank your sender reputation. Check any number in seconds.
190+
countries
<50ms
response time
99.99%
uptime SLA
10K+
req/s
Clean your lists in minutes, not days
Paste a number, upload a CSV, or integrate our API. Every number gets checked against real carrier data across 190+ countries.
Catch fakes instantly
Detect invalid, disconnected, and disposable numbers before they cost you.
Works everywhere
Mobile, landline, VoIP, toll-free. Every country, every carrier, every format.
One API call
Validity, carrier, line type, and formatting — all in a single request under 50ms.
Your data never touches our servers
Phone numbers are validated in real time and immediately discarded. Zero data retention, TLS encryption on every request, fully GDPR and CCPA compliant.
SOC 2 Type IIGDPR compliantZero data retention