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Proxy guides, experiments & operator notes
Engineering guides and first-party measurements for people operating proxy-backed data systems.
- 01Guides20
- 02Tutorials13
- 03Comparisons5
- 04Research5
Newest update Jul 30, 2026 · methodology-open research
Free Proxy List Benchmark: 2,911 Proxies Tested
Results from a June 11, 2026 test of 2,911 entries across seven free proxy lists, covering availability, HTTPS, latency, stability, and study limits.
11 min readRead articleResearch
05 entries
Residential IP Reputation: 1,000 Published Observations
What 1,000 redacted route observations across 25 ASNs show about DNSBL labels, Tor and DROP checks, network classification, and dataset...
10 min readRead
Headless Browser Detection Signals: Defensive Testing
How sites combine browser, rendering, network, session, and behavior signals—and how to test them defensively without treating a...
10 min readRead
TLS Fingerprinting Through Proxies: JA3, JA4, Tunnels
How JA3 and JA4 summarize TLS clients, when proxies preserve or replace a ClientHello, and how to test a path without treating a hash as...
10 min readRead
Free Proxy List Methodology and Coverage Limits
Definitions for the fields Databay publishes, the freshness and filtering rules in the website code, and limits on what those...
4 min readRead
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