Phone Number Validator: Verify Any Number in 2 Seconds (Free + Bulk)

Cleanlist achieves 98% email accuracy through real-time verification and cross-referencing across 15+ data providers. Every record is validated before delivery.

Every new account starts with 30 free credits. Each credit processes one record (enrichment, verification, or lookup). No credit card required to start.

Cleanlist uses waterfall enrichment across 15+ providers including major B2B data sources. The system automatically selects the best provider for each record to maximize match rates.

Yes. Cleanlist integrates with HubSpot, Salesforce, and other CRMs. Enriched data syncs back automatically. You can also upload CSV files or use the REST API.

Most jobs complete in under 2 minutes for up to 10,000 records. Larger files are processed in batches with progress updates.

No. Cleanlist verifies phone numbers through carrier database queries and connectivity checks at the network level — no calls are placed, and the number owner receives no notification. This is the same technology carriers use to route calls, applied to pre-verify your list before dialing.

Line type detection is 95-98% accurate for numbers in the US and Canada, based on carrier records. Note that number porting (when someone moves a landline number to a mobile carrier, or vice versa) can create temporary discrepancies. Cleanlist uses real-time carrier lookups that reflect current porting status.

Yes. Cleanlist supports phone verification in 200+ countries. Coverage and accuracy are highest in the US, Canada, UK, Australia, Germany, and France. For other countries, carrier data availability varies — Cleanlist returns a coverage confidence indicator for each region.

A phone validator checks the number is properly formatted and follows numbering plan rules (this is what the free tool above does, plus what Cleanlist runs on every record at scale). A phone verifier additionally confirms the number is currently in service — typically via an HLR (Home Location Register) lookup against the live mobile network or a connectivity check. Validation alone catches roughly 70-80% of bad numbers; full verification catches 95-99%. Both are included in Cleanlist's paid tier.

Yes — the widget on this page validates one phone number at a time, 25 checks per IP per day, with no signup required. It returns the E.164 format, country, line type (where derivable), and validity verdict. For bulk validation (100 to 1,000,000+ numbers), upload a CSV to your free Cleanlist account — 30 free credits, no card.

Twilio Lookup is a paid developer API ($0.005-0.04 per lookup) designed for validating numbers in apps. Veriphone is a free browser tool for one-off checks, similar in scope to our widget. Cleanlist's distinct value is bulk validation against multiple carrier sources in a single pass, returning E.164 + carrier + line type + DNC status + connectivity in one CSV — purpose-built for SDR teams cleaning a dialing list before a campaign.

Significantly — for two reasons. First, you stop wasting dials on disconnected numbers (typically 25-40% of the average B2B list). Second, your caller ID is less likely to get flagged as 'Spam Likely' by carrier screening services, because the pattern of repeatedly hitting dead numbers is one of the strongest spam-flag signals. SDR teams that pre-validate their lists report 40-60% fewer spam flags and 2-3x higher connect rates per hour of dialing.