Question: I need a way to detect and block suspicious IP addresses to prevent fraud on my platform. Any suggestions?

If you want to spot and block suspicious IP addresses to keep fraud off your site, IPQS is a good option. It's got AI-based fraud detection, bot detection and transaction protection, with real-time monitoring based on sophisticated algorithms that examine more than 300 data points. It also can spot proxy and VPN servers, verify email addresses, validate phone numbers and score fraud risk. It can also be integrated with Hubspot, Salesforce and Outreach.

Another good option is Ipregistry, which offers what it says is accurate and reliable IP address data. It's got a full range of IP Geolocation and Threat Intelligence data, with information on more than 3 million locations. It's got threat intelligence from 220+ OSINT Threat Feeds, proxy and VPN detection, and a big data set for user profiling and fraud blocking. That makes it good for publishers, ad networks and financial services.

And for a serious IP geolocation and online fraud prevention service, MaxMind is a good choice. Its machine learning approach scores risk in real time so you can block fraud. MaxMind covers 99.9999% of IP addresses, and its location data is designed to be noninvasive, so it's a good choice for companies that want to protect billions of transactions each year.

And then there's CrowdSec, which uses the collective wisdom of the crowd to improve security and block malicious IP addresses. It collects real-world data from millions of people and shares signals about aggressive IP addresses daily, which means it can be a good way to cut downtime and security alerts. CrowdSec can be integrated with your existing firewalls and CDNs, and it offers curated data on IP behavior and real-time updates.