DQE LLC builds self-serve data quality infrastructure — postal address validation for the US and 240+ international territories, plus email and phone, all under one API key. US addresses processed with USPS CASS Certified software. Set up in five minutes.
DQE LLC develops DQVerify — a real-time data validation platform that verifies postal addresses (US addresses processed with USPS CASS Certified software, plus 240+ international territories), email addresses, and phone numbers from one platform, with one API key. 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 1,000 free credits, and start calling the API immediately.
US address validation uses USPS CASS Certified software 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 serves retail, logistics, hospitality, marketing operations, and developer teams across the United States.
Address standardization and deliverability verification via a licensed OEM partnership.
We do not sell personal information. Validation inputs are not retained once your request completes.
Validation technology developed and operated by our affiliate DQE Software SAS under an ISO/IEC 27001:2022-certified ISMS (BSI IS 845668).
Phone validation identifies carrier, line type (mobile / VoIP / landline), and active status in real time.
Drop in your data, get results in minutes. No sales call, no contract, no setup headaches.
1,000 free credits · 14 days · no card required Offer ends Nov 30.