Firefox

A living catalog of real browser User-Agent strings seen on CheckProxy.org and shared IP databases. Filter by browser, operating system, device type, or search the raw string — ideal for antidetect profiles and proxy testing.

1914 entries · Last updated Jun 6, 2026, 11:10:17 AM

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Firefox User-Agents — updated Jun 6, 2026, 11:10:17 AM

253 results
# Raw User-Agent Browser OS Device
251 Mozilla/5.0 (Windows NT 10.0; Win64; x64; WOW64; rv:41.0) Gecko/20100101 Firefox/140.0.2 (x64 de) Firefox 140.0.2 Windows —
252 Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:122.0) Gecko/20100101 Firefox/122.0 Firefox 122.0 Windows —
253 Mozilla/5.0 (X11; Linux x86_64; rv:122.0) Gecko/20100101 Firefox/122.0 Firefox 122.0 Linux —

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