Hilfecenter & FAQ

A temporary non-VoIP phone number is a burner line issued by a licensed physical cellular carrier (such as T-Mobile, Vodafone, or AT&T). Unlike virtual VoIP numbers (Google Voice, TextNow), non-VoIP lines guarantee 100% OTP verification delivery for major services like WhatsApp, Telegram, Google, and online banking.

Yes! All numbers in our public free pool are 100% free for anyone to use around the world. There are no hidden fees, no credit card requirements, and no registration needed. Simply choose a country, copy the active number, and check incoming SMS messages in real-time.

Absolutely! Our physical cellular SIM routes pass all HLR/LNP carrier verification checks. Platforms like WhatsApp, Telegram, Uber, Signal, and Facebook actively block virtual VoIP lines, but recognize our non-VoIP numbers as standard mobile SIMs.

Free public numbers remain active for a few weeks before being cycled to keep the pool fresh. If you need a permanent, long-term dedicated number that only you control, you can rent a private dedicated line from our workspace dashboard.

No. Messages sent to free public numbers are visible to anyone visiting that number’s page. We recommend using free numbers for temporary app registrations. For banking, crypto exchanges, or sensitive personal accounts, always use our Private Dedicated Lines.

Yes! We provide robust REST and GraphQL APIs, along with Model Context Protocol (MCP) server integration for coding agents (Cursor, Claude, Antigravity) to fetch incoming SMS OTP messages, execute carrier lookups, and automate line provisioning.

Free numbers are shared public lines accessible to everyone. Dedicated numbers are private, reserved exclusively for your account, support 2-way SMS communication, guaranteed 99.9% uptime, and never recycle your incoming messages.

No installation required! The entire process works directly in your web browser on desktop, tablet, or mobile. You can view incoming SMS messages live without downloading any extra software.

We support 50+ countries around the world, including the United States, United Kingdom, Canada, France, Germany, Netherlands, Sweden, Spain, Australia, India, and Japan.

Our Carrier Lookup tool queries global HLR/VLR registries to inspect any phone number’s carrier operator (e.g. Verizon), line type (Cellular vs VoIP), location, and porting history in real-time.