Accurate contact data,
without the procurement cycle

What DQE LLC does

DQE LLC develops DQVerify — a real-time data validation platform that verifies postal addresses (US USPS CASS certified, plus 240+ international territories), email addresses, and phone numbers in a single API call. Unlike traditional validation vendors that require procurement cycles, SFTP file transfers, and enterprise contracts, DQVerify is fully self-serve: sign up with a business email, receive 100 free validations, and start calling the API immediately.

Address validation is USPS CASS-certified through a licensed OEM partnership. Email validation performs live SMTP handshakes and checks disposable domain and spam trap databases. Phone validation identifies carrier, line type (mobile, landline, VoIP), active status — all returned in the same JSON response, under 150ms at the 95th percentile.

The platform processes over 10 billion validation queries per year for retail, logistics, hospitality, marketing operations, and developer teams across the United States.