Welcome to 51Degrees
Real-time user intelligence that transforms web requests into powerful insights
Why settle for vague analytics when you can truly understand who's visiting your site and what they need? 51Degrees gives you instant, precise intelligence so you can detect devices, pinpoint locations, and deliver brilliant user experiences at lightning speed, all with industry-leading accuracy.
What We Do
At 51Degrees, we turn every user interaction into a chance to learn, optimize, and impress. Here's how:
- Device Detection - Detect 250+ device properties from HTTP headers and other signals to tailor every user experience.
- IP Intelligence - Unlock geolocation, ISP, and network data from IP addresses for sharper insights and smarter decisions.
- Reverse Geocoding - Transform latitude and longitude into real-world addresses, cities, and regions.
- Ultra-fast Performance - Enjoy lightning-fast detection speeds thanks to in-process deployment.
- Privacy-first Architecture - Prefer to keep your data close? Our On-premise options ensure full control and compliance.
Get Started Fast
Mix and match our services to fit your needs:
Device Detection
Identify devices, browsers, and capabilities to deliver tailored experiences across smartphones, tablets, desktops, TVs, and IoT devices.
- Overview - How it works and why it matters
- Quick Start - Cloud vs. On-premise setup
- Apple Detection - Pinpoint specific iPhone/iPad models
IP Intelligence
Tap into geolocation, ISP, and network insights. Perfect for fraud prevention, personalization, and compliance.
- Overview - Understand network data and location capabilities
- Quick Start - Integrate in minutes
Reverse Geocoding
Turn GPS coordinates into meaningful places. Bring real-world context to your digital experiences.
- Overview - Map coordinates to addresses, cities, and regions
- Quick Start - Step-by-step implementation guide
Client-Side Only
Prefer a lightweight approach? Implement device detection directly in the browser - no server-side code needed.
- Cloud Configurator - Generate custom JavaScript snippets
- Setup Guide - Resource Key and integration steps
- Cloud API Reference - Complete HTTP API documentation
Language Support
Work in the language that suits you best. Our services are production-ready across:
| Language | Device Detection | IP Intelligence |
| .NET (C#) | device-detection-dotnet | ip-intelligence-dotnet |
| Java | device-detection-java | ip-intelligence-java |
| Go | device-detection-go | ip-intelligence-go |
| Node.js | device-detection-node | - |
| Python | device-detection-python | - |
| PHP | device-detection-php | - |
Specialized Integrations
Tailor your setup for maximum performance:
- Nginx Module - integrate device detection at the edge
- Prebid Integration - boost programmatic advertising
- UA Parser JS - seamless cloud API integration
- Varnish Module - cache smarter, deliver faster
Explore all our SDKs on GitHub.
Common Use Cases
Here's how you can combine our services for real-world results:
🎯 Enhanced User Experience
Device Detection + IP Intelligence = spot-on content delivery.
Detect mobile users in rural areas and serve relevant content tailored to their needs.
🛡️ Fraud Prevention & Security
Device Detection + IP Intelligence = rock-solid risk assessment.
Spot suspicious device and location patterns, detect bots, and prevent account takeovers.
📊 Programmatic Advertising
Device Detection + IP Intelligence + Prebid Integration = better targeting.
Enrich bid requests with precise device and location data for sharper targeting.
📈 Advanced Analytics
Device Detection + IP Intelligence = next-level audience segmentation.
See the difference between "iPhone users in London" and "Android tablet users in rural areas" for highly targeted insights.
🌍 Geo-Compliance & Personalization
IP Intelligence + Reverse Geocoding = smarter, compliant experiences.
Enable GDPR compliance, local content licensing, and location-based personalization.
⚡ Performance Optimization
Device Detection + IP Intelligence = faster, smarter websites.
Serve optimized images, adjust content for connection speeds, and choose the best CDN for each user.
Documentation Hub
Everything you need to succeed:
💡 Quick Starts
- Device Detection - Cloud vs. On-premise
- IP Intelligence - Location and network data
- Reverse Geocoding - From coordinates to addresses
Deep Dives
Advanced Topics
💬 Get Support
We're here to help every step of the way:
- Have quick questions? Raise an issue on GitHub
- Need enterprise support? Email us at support@51degrees.com
- Looking for API details? Check the Cloud API documentation
- Want performance tips? Get in touch for optimization advice.