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.

33922 entries · Last updated Jul 22, 2026, 03:58:12 AM

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Firefox User-Agents — updated Jul 22, 2026, 03:58:12 AM

4822 results
# Raw User-Agent Browser OS Device
251 Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.13) Gecko/20101206 Red Hat/3.6-3.el4 Firefox/3.6.13 Firefox 3.6.13 Red Hat —
252 Mozilla/5.0 (X11; U; OpenBSD i386; en-US; rv:1.9.2.8) Gecko/20101230 Firefox/3.6.8 Firefox 3.6.8 OpenBSD —
253 Mozilla/5.0 (X11; U; Linux i686; es-AR; rv:1.9.1.8) Gecko/20100214 Ubuntu/9.10 (karmic) Firefox/3.5.8 Firefox 3.5.8 Ubuntu —
254 Mozilla/5.0 (Windows; U; Windows NT 5.1; it; rv:1.9.2.11) Gecko/20101012 Firefox/3.6.11 ( .NET CLR 3.5.30729) Firefox 3.6.11 Windows —
255 Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.6) Gecko/20100117 Gentoo Firefox/3.5.6 Firefox 3.5.6 Gentoo —
256 Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9.1.8) Gecko/20100202 Firefox/3.5.8 (.NET CLR 3.5.30729) FirePHP/0.4 Firefox 3.5.8 Windows —
257 Mozilla/5.0 (X11; U; Linux x86_64; es-ES; rv:1.9.2.12) Gecko/20101027 Fedora/3.6.12-1.fc13 Firefox/3.6.12 Firefox 3.6.12 Fedora —
258 Mozilla/5.0 (Windows; U; Windows NT 5.1; fr; rv:1.9.2b4) Gecko/20091124 Firefox/3.6b4 (.NET CLR 3.5.30729) Firefox 3.6b4 Windows —
259 Mozilla/5.0 (Windows NT 5.1; rv:2.0b8pre) Gecko/20101127 Firefox/4.0b8pre Firefox 4.0b8pre Windows —
260 Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_3; rv:1.9.4.20) Gecko/4174-11-22 18:15:54.431824 Firefox/5.0 Firefox 5.0 macOS —
261 Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/120.0 Firefox 120.0 Windows —
262 Mozilla/5.0 (Windows NT 10.0; rv:128.0) Gecko/20100101 Firefox/128.0 Firefox 128.0 Windows —
263 Mozilla/5.0 (Windows NT 5.0; gu-IN; rv:1.9.0.20) Gecko/9403-06-27 15:19:03.865204 Firefox/14.0 Firefox 14.0 Windows —
264 Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0 Firefox 64.0 Windows —
265 Mozilla/5.0 (Windows 98; pl-PL; rv:1.9.2.20) Gecko/4256-01-19 18:49:55.009872 Firefox/3.8 Firefox 3.8 Windows —
266 Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:152.0) Gecko/20100101 Firefox/152.0 GLS/100.10.9263.92 Firefox 152.0 Windows —
267 Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:137.0) Gecko/20100101 Firefox/137.0 Firefox 137.0 Ubuntu —
268 Mozilla/5.0 (X11; Linux i686; rv:114.0) Gecko/20100101 Firefox/114.0 Firefox 114.0 Linux —
269 Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:152.0) Gecko/20100101 Firefox/152.0 r3dfox/152.0.4 Firefox 152.0 Windows —
270 Mozilla/5.0 (Windows; U; Windows NT 5.1; pt-PT; rv:1.9.1.2) Gecko/20090729 Firefox/3.5.2 (.NET CLR 3.5.30729) Firefox 3.5.2 Windows —
271 Mozilla/5.0 (Windows NT 6.3; Win64; x64; rv:109.0) Gecko/20100101 Firefox/115.0 Firefox 115.0 Windows —
272 Mozilla/5.0 (X11; U; Linux i686; rv:19.0) Gecko/20100101 Slackware/13 Firefox/19.0 Firefox 19.0 Slackware —
273 Mozilla/5.0 (Macintosh; U; PPC Mac OS X 10_10_7; rv:1.9.3.20) Gecko/9585-10-06 16:56:56.973389 Firefox/3.6.8 Firefox 3.6.8 macOS —
274 Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:109.0) Gecko/20100101 Firefox/113.0 Firefox 113.0 macOS —
275 Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:134.0) Gecko/20100101 Firefox/135.0 Firefox 135.0 Windows —
276 Mozilla/5.0 (Windows NT 5.01; nan-TW; rv:1.9.0.20) Gecko/9853-01-17 22:58:01.702179 Firefox/3.6.8 Firefox 3.6.8 Windows —
277 Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Firefox/115.0 Firefox 115.0 Windows —
278 Mozilla/5.0 (X11; Linux x86_64; rv:7.0a1) Gecko/20110623 Firefox/7.0a1 Firefox 7.0a1 Linux —
279 Mozilla/5.0 (Windows NT 10.0; WOW64; x64; rv:136.0esr) Gecko/20100101 Firefox/136.0esr Firefox 136.0esr Windows —
280 Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:154.0) Gecko/20100101 Firefox/154.0 Firefox 154.0 Windows —
281 Mozilla/5.0 (WindowsCE 6.0; rv:2.0.1) Gecko/20100101 Firefox/4.0.1 Firefox 4.0.1 — —
282 Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:152.0) Gecko/20100101 Firefox/152.0,gzip(gfe) Firefox 152.0 Windows —
283 Mozilla/5.0 (Windows NT 6.1; WOW64; rv:136.0) Gecko/20000101 Firefox/136.0 Firefox 136.0 Windows —
284 Mozilla/5.0 (X11; Linux x86_64; rv:122.0) Gecko/20100101 Firefox/122.0 Firefox 122.0 Linux —
285 Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/8E30A Firefox 8E30A Windows —
286 Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:135.0) Gecko/20100101 Firefox/135.0 Firefox 135.0 Ubuntu —
287 Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:140.0) Gecko/20100101 Firefox/140.0 Firefox 140.0 macOS —
288 Mozilla/5.0 (X11; Linux i686; rv:1.9.7.20) Gecko/3259-02-06 20:10:37.228050 Firefox/3.6.7 Firefox 3.6.7 Linux —
289 Mozilla/5.0 (Macintosh; PPC Mac OS X 10_8_6; rv:1.9.5.20) Gecko/4609-04-23 00:17:25.177795 Firefox/3.8 Firefox 3.8 macOS —
290 Mozilla/5.0 (Macintosh; Intel Mac OS X 10.13; rv:109.0) Gecko/20100101 Firefox/113.0 Firefox 113.0 macOS —
291 Mozilla/5.0 (Windows NT 10.0; rv:152.0) Gecko/20100101 Firefox/152.0 Firefox 152.0 Windows —
292 Mozilla/5.0 (X11; Linux x86_64; rv:1.9.5.20) Gecko/8007-06-28 07:22:22.438538 Firefox/3.8 Firefox 3.8 Linux —
293 Mozilla/5.0 (Windows NT 6.3; Win64; x64; rv:152.0) Gecko/20100101 Firefox/152.0 r3dfox/152.0.4 Firefox 152.0 Windows —
294 Mozilla/5.0 (X11; Linux i686; rv:1.9.7.20) Gecko/9569-05-01 10:57:57.353302 Firefox/4.0 Firefox 4.0 Linux —
295 Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:145.0) Gecko/20100101 Firefox/145.0 Firefox 145.0 Windows —
296 Mozilla/5.0 (X11; Linux x86_64; rv:1.9.6.20) Gecko/8491-09-14 12:59:02.366394 Firefox/3.8 Firefox 3.8 Linux —
297 Mozilla/5.0 (Windows NT 6.2; tn-ZA; rv:1.9.1.20) Gecko/3931-11-09 07:56:52.511978 Firefox/3.8 Firefox 3.8 Windows —
298 Mozilla/5.0 (Windows NT 4.0; bho-IN; rv:1.9.2.20) Gecko/9120-01-28 21:12:38.253723 Firefox/3.8 Firefox 3.8 Windows —
299 Mozilla/5.0 (X11; Linux x86_64; rv:1.9.6.20) Gecko/4544-08-06 23:57:06.510651 Firefox/3.6.18 Firefox 3.6.18 Linux —
300 Mozilla/5.0 (X11; Linux i686; rv:1.9.5.20) Gecko/2062-06-27 16:37:00.020259 Firefox/14.0 Firefox 14.0 Linux —

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