Phone Validation & Fraud Check
Confirm that a phone number is real, reachable, and trustworthy before you act on it. We validate format, detect line type, identify the carrier, and ping the live mobile network — then layer on fraud signals like SIM-swap, recent porting, and disposable VoIP detection across 240+ countries.
What isPhone Validation & Fraud Check?
Phone validation parses and standardises any number to E.164 format, then verifies it against the global telecom infrastructure. We detect the line type — mobile, landline, or VoIP — and identify the carrier and country of origin. A live HLR (Home Location Register) lookup pings the subscriber's home network to confirm the number is active and reachable right now, and resolves number portability so you see the true current carrier rather than the original allocation.
On top of validation, we score fraud risk. Signals include recent SIM-swap activity, numbers ported within the last few days, disposable or virtual VoIP numbers commonly used to evade detection, and unusual allocation patterns — combined into a single risk score your systems can act on. All checks are GDPR-aligned, processing only the number itself and the network metadata it returns.
Best for:
- Verifying contact details at signup before they reach your CRM
- Reducing SMS/OTP delivery failures and the wasted spend they cause
- Blocking virtual and VoIP numbers used to commit fraud
- SIM-swap and account-takeover protection at the point of risk
- Cleaning legacy CRM phone data and removing dead numbers
- Improving contact and connect rates for sales and collections teams
Why teams rely onnetwork-level phone checks.
Reach Real Numbers
Live HLR lookups confirm a number is active and reachable on its carrier network before you spend a message or a sales call on it.
Cut SMS Waste
Screen out invalid, inactive, and unroutable numbers up front so your OTP and notification spend only goes to deliverable handsets.
Stop Account Fraud
SIM-swap, recent-porting, and disposable VoIP signals flag the high-risk numbers fraudsters use for account takeover before they get through.
Cleaner Contact Data
Standardised E.164 numbers enriched with line type, carrier, and country keep your CRM accurate and your connect rates high.
Every number checked at the network level
Returned in a single API response
Specialist Tip
An HLR lookup queries the subscriber's live carrier network rather than a static database, so it tells you whether a number is switched on and reachable at that exact moment. Run it before you send an OTP and you stop paying for messages that will never deliver — and you catch numbers that have just been disconnected or ported in a SIM-swap attack before they reach a real victim.
More ways toverify and enrich your data.
Start validating numbers in real time.
Tell us about your use case and our team will get your first phone validation and fraud checks running in minutes. Usage-based pricing, no minimum commitment, and full HLR plus risk signals from day one.