Verify Every Address on Your Lead List
ProxyBox-powered API that confirms business addresses and websites are real using residential IPs to bypass bot detection. No false positives from datacenter IP blocks.
ProxyBox-powered API that confirms business addresses and websites are real using residential IPs to bypass bot detection. No false positives from datacenter IP blocks.
Most address verification APIs check from datacenter IPs, which triggers bot detection and returns false negatives. We verify from actual residential IPs across 195 countries, so you get accurate results that reflect what your sales team will encounter when they call.
Import 100K addresses from your CSV. Get verified/unverified status, working website URLs, and geocoding data back in 24 hours. Cleaner lists mean higher reply rates for your outbound sales team.
Data buyers and B2B platforms need to verify every address before selling. Residential-IP checks ensure accuracy your customers trust.
Sales teams filter out bad addresses before cold-calling campaigns. Lower bounce rates, higher connect rates.
Identify ghost companies and shell offices. Verify business registrations match physical addresses using our geo-database.
Keep shipper and carrier contact lists current. Weekly updates of hiring signals and facility changes tied to real addresses.
Quarterly address verification to catch companies that moved, merged, or closed. Reduce invalid outreach campaigns.
Send a CSV, JSON, or API call with your list of business addresses. No API key setup required for testing.
Our ProxyBox fleet checks each address from real residential IPs across the country. Detects if the address is valid, has a working website, and maps geocoding data.
Real-time API for single lookups. Batch mode for 1K+ addresses, processed within 24 hours. Results include confidence scores and geo-coordinates.
Free tier: 10,000 addresses/month. Paid plans start at $199/month for 500K verifications. Volume discounts for enterprise customers.
See Full PricingStandard APIs use datacenter IPs, which trigger bot detection and return false negatives. We use ProxyBox residential IPs, so we get the same results your sales team will encounter. Real verification, not statistical guessing.
We store only the verification result (valid/invalid/unknown) and geocoding data. We do not retain the original address text. Compliance details in our Security & Privacy documentation.
Address verification is one layer of do-not-call compliance, but it is not a substitute for proper TCPA opt-out scrubbing. See our Security page for details on appropriate use cases.
99.5% uptime SLA for paid plans. Real-time queries processed with sub-second latency. See our full SLA in Security documentation.
Start with 10,000 free verifications. No credit card required. Full access to batch and real-time APIs.
Register interest
This is not a purchase and there is no card field. It puts your address, this product, and whatever you write below in front of a person, and you get a written answer about what finishing it, or handing it over for you to run yourself, would actually take.