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.

IPQS Fraud Intelligence is best solutions IPQS offers many features that help my business protect itself from fraud activites on the internet. I use IPQS for email validation so that it can quickly browse through my email addresses for legitimacy and recognize suspicious email addresses, which are frequently utilized for fraudulent purposes. Also, it can recognize when a client is interfacing with a site through an intermediary, which can be an indication of dubious action. Their API interface reaction time is very fast, and the data is accurate and reliable. I've been using IPQS for few months now and I can say that it's one of the best fraud detection solutions in the market

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!

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.