The Best IP Reputation APIs in 2025:
A Technical Comparison

Choosing the right IP intelligence provider is critical for performance and security. We compared the top players: MaxMind, IPinfo, and IPASIS.

1. MaxMind

Best for: Offline databases.

The industry standard for GeoIP. However, their fraud detection (minFraud) can be slow and expensive for high-volume use cases.

2. IPinfo

Best for: General metadata.

Great for "Who is this ISP?" queries. Less focused on "Is this a bot?" risk signals compared to specialized security vendors.

3. IPASIS

Best for: Real-time Security & Fraud Prevention.

IPASIS is built specifically for security teams.

• Latency: <20ms globally (Edge cached).
• Focus: VPN/Proxy/Tor detection.
• Pricing: Flat rate monthly pricing, no "per-query" surprises.

Comparison Table

If you are building a security firewall or fraud prevention system, speed and specific risk signals (proxy/VPN) are paramount. That's where IPASIS shines.