VPN & Proxy Detection
Advanced analysis to identify if your connection routes through a VPN, proxy, or datacenter.
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What Is VPN & Proxy Detection?
VPN and proxy detection is the process of identifying whether an IP address originates from a commercial anonymization service rather than a genuine residential or business internet connection. Websites, streaming platforms, and security systems use VPN detection to enforce geo-restrictions, prevent fraud, and comply with licensing agreements.
Our VPN detection uses ASN (Autonomous System Number) analysis powered by MaxMind GeoLite2 data — the same technology used by enterprise security tools. All analysis is performed locally: your IP is never shared with third-party services, maintaining the privacy-first principles we are built on.
Connection Types We Detect
Commercial VPN providers like NordVPN, ExpressVPN, Mullvad, and Surfshark. Identified via known ASN ranges.
HTTP/SOCKS proxy servers that route web traffic through intermediary nodes.
Tor (The Onion Router) exit nodes that anonymize traffic through layered encryption.
Cloud provider IPs (AWS, GCP, Azure, OVH) not associated with residential users.
Apple's iCloud Private Relay service, identified by Apple Inc. / AS6185 ASN.
Standard residential ISP connections — the most trustworthy connection type for services.
Why Privacy-First Detection Matters
Unlike services that send your IP to multiple third-party enrichment APIs, our tool performs all analysis using locally stored MaxMind GeoLite2 databases. This means: no IP address leakage to external services, faster response times (no API round-trips), and consistent results that aren't affected by third-party rate limits or downtime.
Frequently Asked Questions
How does VPN detection work?
VPN detection uses multiple signals to identify masked connections: ASN (Autonomous System Number) analysis to identify known VPN provider IP ranges, data center fingerprinting (VPN servers are typically hosted in data centers, not residential ISPs), reverse DNS patterns, and IP reputation databases. Our tool uses local MaxMind GeoLite2 data — no third-party APIs.
Can websites detect if I'm using a VPN?
Yes. Most major websites and platforms can detect VPN usage through ASN analysis, IP reputation checks, and behavioral signals. Commercial VPN providers' IP ranges are well-documented. Dedicated IPs and residential proxies are harder to detect but still identifiable through advanced fingerprinting methods.
What is the difference between a VPN and a proxy?
A VPN (Virtual Private Network) encrypts all your device's traffic and routes it through a private server, masking your IP at the OS level. A proxy routes specific application traffic (usually HTTP/HTTPS) through a server, without encryption. VPNs offer broader protection, while proxies are simpler but less secure.
What is iCloud Private Relay?
Apple's iCloud Private Relay is a privacy feature for iCloud+ subscribers that splits your internet traffic between Apple and Cloudflare servers so neither can see both your IP address and what you're browsing. It assigns a temporary IP in your approximate region and shows as 'relay' in IP detection tools.
Why does my VPN show as a data center IP?
Commercial VPN providers host their servers in data centers (AWS, Vultr, OVH, etc.) rather than on residential ISP networks. When you connect through a VPN, your traffic originates from that data center's IP block. This is how VPN detection tools identify VPN traffic — by recognizing data center ASNs.
Does using a VPN make me completely anonymous?
No. While a VPN hides your IP address from websites and your ISP, it does not make you anonymous. Your VPN provider can see your traffic. Browser fingerprinting, cookies, login sessions, and behavioral tracking can still identify you. For stronger anonymity, combine a VPN with Tor browser, though this significantly reduces browsing speed.
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