VoIP Number Lookup by CallFlow

Check if a phone number is VoIP, mobile or landline and see its carrier and country. Free, works worldwide, no sign-up.

Find out what kind of phone number you are looking at — without leaving the page. VoIP Number Lookup by CallFlow puts the free phone number checker from callflow.solutions in your toolbar. Type or paste a number, pick the country, and in a second you see: • Line type — mobile, landline, VoIP or another category (toll-free, premium, etc.) • Whether it is a VoIP (internet-based) line — the kind robocallers and throwaway accounts favour • Carrier of record • Location and country Works with numbers from around the world. Enter them the way you would dial at home, or in international format with a plus sign — the extension validates and normalises the number before it is checked, so typos are caught instantly. Right-click any phone number you see on a page and choose “Look up … with CallFlow” to check it straight away. “Open Full Lookup” takes you to the complete tool on callflow.solutions with the number already filled in. WHO IT IS FOR • Sales and support teams qualifying leads and callbacks • Anyone deciding whether to call back an unknown number • Teams that need to know if a number can receive SMS codes (VoIP numbers often cannot) • Fraud, trust & safety and compliance work where line type is a signal WHAT IT DOES NOT DO • No names, addresses or owner identity — only what the phone network knows about the line • No account, no sign-up, no cookies, no tracking, no ads • It never reads your browsing history or the pages you visit; the only thing sent to callflow.solutions is the number you ask it to check (and the country you picked) LIMITS The checker is free with a fair-use allowance per day; the extension shows how many checks you have left and when the allowance resets. PRIVACY The extension talks to callflow.solutions only, over HTTPS. Full details: https://callflow.solutions/privacy#free-lookup CallFlow is a call-routing and tracking platform for businesses. Learn more at https://callflow.solutions