Clean and verify large phone lists without losing control of cost.
Clear intent-matched introduction with direct next action.
Clean formatting, strip invalid characters, and resolve country destination codes.
Separate duplicates and fresh hits. Only charge for un-cached fresh verification.
Exact billable units frozen before paid job starts. Zero price surprises.
How it works
From raw input to trusted verification results without pricing surprises.
Add your data
Step 1 of 4Upload a supported file, paste records, or create a verification job through the API.
Supports .csv, .xlsx, .xls, .txt (up to 1,000,000 rows per job)
Deterministic Normalization
E.164 and RFC parsing happens in local memory before upstream submission. Invalid records are dropped with zero fee.
Encrypted HMAC-SHA256 Cache
Cache keys are computed using HMAC-SHA256 with tenant isolation. Zero plain contact data is stored unencrypted at rest.
Double-Entry Ledger Invariant
All application accounting uses integer USD micros. Maximum quote is frozen before execution, with zero surprise fees.
Asynchronous Webhook Push
Handle high-volume jobs with signed HMAC-SHA256 webhooks, automatic retries, and strict idempotency keys.
Ready to verify your contact data?
Start with free preflight inspection. Review pricing before committing a single credit.
Bulk workflow capabilities
Auto-detect columns, delimiter types, and header mappings.
Detect invalid format numbers and exact duplicates before paying.
Download enriched results with normalized fields and checked-at dates.
Designed as a reusable workflow capability rather than a one-off upload screen.
Designed as a reusable workflow capability rather than a one-off upload screen.
Designed as a reusable workflow capability rather than a one-off upload screen.
Designed as a reusable workflow capability rather than a one-off upload screen.
Check your data before you process it.
Run a preflight first. See counts, routing and cost before processing.