The best VPN/proxy detection and device… The best VPN/proxy detection and device fingerprint service in the world by far. Not only are their prices the best, but support is the best I've ever dealt with. Been using for 5 years and here's to another 50!

Ruins legitimate website traffic Their VPN/proxy detection data service is very draconian and leads to many false positives that ultimately degrade the service experience of many clients I have worked with, who have had their users' residential and cellular IP addresses falsely assigned a high fraud risk. I myself have had several instances where I have been blocked by sites using data from IPQS despite using low risk corporate or residential IPs, needless to say causing endless headache. I would not recommend using this company for proxy detection unless you are looking to alienate legitimate website visitors. Additionally, they are not very receptive to requests to unblock IP addresses and seemingly have an arbitrary and secretive process by which they assign fraud scores.

Verify emails and more at IPQualityScore I'm completing a small project for a church and needed to verify 1500 email addresses before we sent our first email blast to the 1500 registered users. The staff provided me with a quick and easy solution, and I was able to verify all email addresses within minutes. I recommend ipqualityscore.com for all of your website Fraud verification and email needs. Their API response time is quick, and the information is accurate and trustworthy. Great job!

Good so far! Been using for months now, great service and support very responsive. Just a shame their non-free plans are such a big jump up from the free ones.

GREAT TEAM, VERY ACCURATE DATA! Our company tested IPQS against 10+ service providers to determine the best IP address data and then again against 15+ service providers for email validation. IPQualityScore outperformed by a significant margin across both services (email + IP). We were also impressed with the quick response times from their support team and our account rep. Their data is a much higher caliber than what's typically found in the industry and you can see that the team works hard to maintain their edge against fraudsters.