How to check if a phone number is VoIP
Detect whether a phone number is a VoIP line or a real mobile before trusting it for verification. Free line-type lookup, step-by-step.
Some services reject VoIP numbers for sign-up verification because they are cheap and disposable. Here is how to check a number’s line type so you know whether it is a real mobile or VoIP.
Line-type detection
Line-type lookup uses numbering-plan and carrier data to classify a number as mobile, landline, VoIP, toll-free, and more. It is not always 100% — number portability and virtual carriers can blur lines — but it is accurate enough to filter out obvious VoIP numbers.
When you need a real mobile
If a target verification rejects VoIP, you need a genuine mobile (non-VoIP) number. Our number catalog flags non-VoIP options for exactly this — so you can order a real-SIM number for verifications that will not accept VoIP.
Step by step
Enter the number (in E.164, or add a country hint) into the phone validator.
Read the detected line type: mobile, landline, VoIP, toll-free, etc.
If it is VoIP and you need a real mobile, use the non-VoIP filter in the number catalog.
Try it now — free, no signup
Use the phone validator in your browser. Then, when you need it at scale with an API key and higher limits, grab the full Eveses API.