IPLogs vs proxycheck.io
proxycheck.io and IPLogs both offer free proxy and VPN detection. IPLogs differentiates with seven direct VPN-provider APIs (not aggregator-only), active OpenVPN/WireGuard/IKEv2 probing, Apple Private Relay and Cloudflare WARP separation, per-signal provenance, and a published 0.3% false-positive rate. proxycheck.io is a simpler, well-established proxy-flagging API.
What proxycheck.io is
proxycheck.io is a long-running, popular proxy and VPN detection API with a free daily query allowance and an optional key for higher limits. It returns a proxy/VPN flag, type, and risk score, and is known for being simple to integrate. It is the closest free alternative to IPLogs in mission.
Pricing, free-tier limits, and feature sets change. Verify current details on proxycheck.io before deciding. This page reflects publicly documented behavior as of 2026-05-21.
Side-by-side
| Capability | IPLogs | proxycheck.io |
|---|---|---|
| Free tier for VPN/proxy detection | Unlimited, fair-use | Free daily query allowance |
| Signup / API key required | No signup, no key | Optional key for higher limits |
| Direct VPN-provider ingestion | 7 provider APIs (Mullvad, PIA, IVPN…) | Aggregated proxy/VPN feeds |
| Active protocol probing | OpenVPN/WireGuard/IKEv2/REALITY | Feed/heuristic based |
| Apple Private Relay / WARP separation | Distinct signals | Often typed as VPN |
| Per-signal provenance returned | Every matching feed/probe listed | Type + risk score |
| Published false-positive rate | 0.3% on a Cymru-validated corpus | Not published |
| Public CC-BY datasets | /tools catalog | API only |
When to choose IPLogs
- You want direct VPN-provider ground truth plus active probing, not aggregator feeds alone.
- Apple Private Relay and Cloudflare WARP must not be lumped in with commercial VPNs.
- You need per-signal provenance and a published false-positive rate.
- You want downloadable CC-BY datasets in addition to the API.
When to choose proxycheck.io
- You want a simple, long-established proxy/VPN flag and are happy with a daily allowance.
- Your integration already targets proxycheck.io's response format.
- You prefer a single risk score over per-signal detail.
See the numbers
IPLogs publishes its detection accuracy openly: 0.3% false-positive rate on a Cymru-validated corpus. For live, head-to-head API responses across six vendors on controlled test IPs, see the empirical VPN-detection API test.
FAQ
Is IPLogs a free alternative to proxycheck.io?
Yes, and the two are the closest in mission — both offer free proxy and VPN detection. IPLogs adds seven direct VPN-provider APIs, active protocol probing, Apple Private Relay/WARP separation, per-signal provenance, and a published false-positive rate.
What's the main difference between IPLogs and proxycheck.io?
Sourcing and transparency. IPLogs ingests seven VPN providers' own server lists directly and actively probes IPs for VPN protocols, then returns every matching signal. proxycheck.io returns a simpler proxy/VPN flag, type, and risk score from aggregated feeds.
Do both support IPv6?
IPLogs treats IPv6 as first-class across detection and the dashboard. Verify proxycheck.io's current IPv6 coverage on their documentation, as feature sets change.