For more information, please visit the following pages:

• Firefox
• Mozilla Foundation
• Gecko

Latest user agents (if you are looking for complete list, download it here):

• Mozilla/5.0 (Android 12; Mobile; rv:139.0) Gecko/25717952 Firefox/139.0
• Mozilla/5.0 (Android 10; Mobile; rv:139.0) Gecko/26272019 Firefox/139.0
• Mozilla/5.0 (Android 14; Mobile; rv:139.0) Gecko/19910652 Firefox/139.0
• Mozilla/5.0 (Android 11; Mobile; rv:139.0) Gecko/29715965 Firefox/139.0 [ip:95.234.36.75]
• Mozilla/5.0 (Android 13; Mobile; rv:139.0) Gecko/19482015 Firefox/139.0
• Mozilla/5.0 (Android 13; Mobile; rv:139.0) Gecko/23931639 Firefox/139.0
• Mozilla/5.0 (Android 10; Mobile; rv:139.0) Gecko/13127867 Firefox/139.0
• Mozilla/5.0 (Android 13; Mobile; rv:139.0) Gecko/23751234 Firefox/139.0
• Mozilla/5.0 (Android 13; Mobile; rv:139.0) Gecko/26237330 Firefox/139.0
• Mozilla/5.0 (Android 11; Mobile; rv:139.0) Gecko/11829925 Firefox/139.0
• Mozilla/5.0 (Android 13; Mobile; rv:139.0) Gecko/13508025 Firefox/139.0
• Mozilla/5.0 (Wayland like X11; Linux x86_64; en-US; rv:139.0esr) Gecko/20211219 Firefox/139.0esr
• Mozilla/5.0 (X11; Linux x86_64; rv:139.0esr) Gecko/20172610 Firefox/139.0esr
• Mozilla/5.0 (Android 10; Mobile; rv:139.0) Gecko/17164835 Firefox/139.0
• Mozilla/5.0 (Android 14; Mobile; rv:139.0) Gecko/24680045 Firefox/139.0
• Mozilla/5.0 (Android 12; Mobile; rv:139.0) Gecko/14847459 Firefox/139.0 [ip:5.91.239.67]
• Mozilla/5.0 (Android 14; Mobile; rv:139.0) Gecko/28506826 Firefox/139.0
• Mozilla/5.0 (Android 11; Mobile; rv:139.0) Gecko/19721599 Firefox/139.0 [ip:151.82.25.67]
• Mozilla/5.0 (Android 14; Mobile; rv:139.0) Gecko/14410935 Firefox/139.0
• Mozilla/5.0 (Android 13; Mobile; rv:139.0) Gecko/16233041 Firefox/139.0
• Mozilla/5.0 (Android 12; Mobile; rv:139.0) Gecko/17284347 Firefox/139.0
• Mozilla/5.0 (Android 13; Mobile; rv:139.0) Gecko/13058391 Firefox/139.0
• Mozilla/5.0 (Android 13; Mobile; rv:139.0) Gecko/24328083 Firefox/139.0
• Mozilla/5.0 (Android 14; Mobile; rv:139.0) Gecko/16749735 Firefox/139.0
• Mozilla/5.0 (Android 10; Mobile; rv:139.0) Gecko/18214152 Firefox/139.0
• Mozilla/5.0 (Android 11; Mobile; rv:139.0) Gecko/15350975 Firefox/139.0
• Mozilla/5.0 (Android 12; Mobile; rv:139.0) Gecko/12710582 Firefox/139.0
• Mozilla/5.0 (Android 14; Mobile; rv:139.0) Gecko/28005893 Firefox/139.0
• Mozilla/5.0 (Android 13; Mobile; rv:139.0) Gecko/15956440 Firefox/139.0
• Mozilla/5.0 (Android 11; Mobile; rv:139.0) Gecko/29499282 Firefox/139.0
• Mozilla/5.0 (Android 11; Mobile; rv:139.0) Gecko/15038930 Firefox/139.0
• Mozilla/5.0 (Android 12; Mobile; rv:139.0) Gecko/22940857 Firefox/139.0
• Mozilla/5.0 (Android 12; Mobile; rv:139.0) Gecko/13539802 Firefox/139.0
• Mozilla/5.0 (Android 12; Mobile; rv:139.0) Gecko/28062651 Firefox/139.0
• Mozilla/5.0 (Android 13; Mobile; rv:139.0) Gecko/13813937 Firefox/139.0
• Mozilla/5.0 (Android 10; Mobile; rv:139.0) Gecko/12424692 Firefox/139.0
• Mozilla/5.0 (Android 10; Mobile; rv:139.0) Gecko/26259676 Firefox/139.0
• Mozilla/5.0 (Android 12; Mobile; rv:139.0) Gecko/22277269 Firefox/139.0
• Mozilla/5.0 (Android 12; Mobile; rv:139.0) Gecko/24177083 Firefox/139.0
• Mozilla/5.0 (Android 13; Mobile; rv:139.0) Gecko/19108997 Firefox/139.0
• Mozilla/5.0 (Android 11; Mobile; rv:139.0) Gecko/14264365 Firefox/139.0
• Mozilla/5.0 (Android 14; Mobile; rv:139.0) Gecko/28687353 Firefox/139.0
• Mozilla/5.0 (Android 13; Mobile; rv:139.0) Gecko/27003459 Firefox/139.0
• Mozilla/5.0 (Android 12; Mobile; rv:139.0) Gecko/27073518 Firefox/139.0
• Mozilla/5.0 (Android 14; Mobile; rv:139.0) Gecko/24890751 Firefox/139.0
• Mozilla/5.0 (Android 13; Mobile; rv:139.0) Gecko/16123090 Firefox/139.0
• Mozilla/5.0 (Android 13; Mobile; rv:139.0) Gecko/10562232 Firefox/139.0
• Mozilla/5.0 (Android 11; Mobile; rv:139.0) Gecko/28761597 Firefox/139.0 [ip:95.235.17.187]
• Mozilla/5.0 (Android 14; Mobile; rv:139.0) Gecko/11378353 Firefox/139.0
• Mozilla/5.0 (Android 13; Mobile; rv:139.0) Gecko/11944530 Firefox/139.0
• Mozilla/5.0 (Android 14; Mobile; rv:139.0) Gecko/26825649 Firefox/139.0
• Mozilla/5.0 (Android 10; Mobile; rv:139.0) Gecko/22197804 Firefox/139.0 [ip:93.45.206.209]
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10; rv:139.0) Gecko/20100101 Firefox/139.0
• Mozilla/5.0 (Macintosh; Intel Mac OS X 11; rv:139.0) Gecko/20110101 Firefox/139.0
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13; rv:139.0) Gecko/20000101 Firefox/139.0
• Mozilla/5.0 (Android 10; Mobile; rv:139.0) Gecko/20028421 Firefox/139.0
• Mozilla/5.0 (Android 14; Mobile; rv:139.0) Gecko/25394881 Firefox/139.0
• Mozilla/5.0 (Android 10; Mobile; rv:139.0) Gecko/17813452 Firefox/139.0
• Mozilla/5.0 (Android 10; Mobile; rv:139.0) Gecko/15088013 Firefox/139.0
• Mozilla/5.0 (X11; Linux x86_64; rv:139.0) Gecko/20100101 Firefox/139.0 [ip:151.53.4.119]
• Mozilla/5.0 (Android 12; Mobile; rv:139.0) Gecko/12198980 Firefox/139.0 [ip:87.19.23.36]
• Mozilla/5.0 (Android 14; Mobile; rv:139.0) Gecko/16916289 Firefox/139.0
• Mozilla/5.0 (Android 14; Mobile; rv:139.0) Gecko/25129530 Firefox/139.0
• Mozilla/5.0 (Android 14; Mobile; rv:139.0) Gecko/14763275 Firefox/139.0
• Mozilla/5.0 (Android 14; Mobile; rv:139.0) Gecko/15400951 Firefox/139.0
• Mozilla/5.0 (Android 13; Mobile; rv:139.0) Gecko/15347822 Firefox/139.0 [ip:151.19.106.138]
• Mozilla/5.0 (Android 10; Mobile; rv:139.0) Gecko/10809039 Firefox/139.0
• Mozilla/5.0 (Android 14; Mobile; rv:139.0) Gecko/19481858 Firefox/139.0
• Mozilla/5.0 (Android 13; Mobile; rv:139.0) Gecko/23000532 Firefox/139.0 [ip:95.74.55.50]
• Mozilla/5.0 (Android 10; Mobile; rv:139.0) Gecko/22200927 Firefox/139.0 [ip:93.45.197.233]
• Mozilla/5.0 (Android 13; Mobile; rv:139.0) Gecko/28534143 Firefox/139.0
• Mozilla/5.0 (Android 12; Mobile; rv:139.0) Gecko/28588600 Firefox/139.0
• Mozilla/5.0 (Android 12; Mobile; rv:139.0) Gecko/27328815 Firefox/139.0
• Mozilla/5.0 (Android 10; Mobile; rv:139.0) Gecko/21897015 Firefox/139.0
• Mozilla/5.0 (Android 10; Mobile; rv:139.0) Gecko/29358783 Firefox/139.0
• Mozilla/5.0 (Android 12; Mobile; rv:139.0) Gecko/21061996 Firefox/139.0
• Mozilla/5.0 (Android 13; Mobile; rv:139.0) Gecko/10921802 Firefox/139.0 [ip:186.191.232.151]
• Mozilla/5.0 (Android 10; Mobile; rv:139.0) Gecko/12257106 Firefox/139.0 [ip:83.195.0.204]
• Mozilla/5.0 (Android 14; Mobile; rv:139.0) Gecko/10323141 Firefox/139.0
• Mozilla/5.0 (Android 11; Mobile; rv:139.0) Gecko/14259081 Firefox/139.0
• Mozilla/5.0 (Android 14; Mobile; rv:139.0) Gecko/12571014 Firefox/139.0
• Mozilla/5.0 (Android 11; Mobile; rv:139.0) Gecko/21374525 Firefox/139.0
• Mozilla/5.0 (Android 10; Mobile; rv:139.0) Gecko/29743267 Firefox/139.0
• Mozilla/5.0 (Android 13; Mobile; rv:139.0) Gecko/20945394 Firefox/139.0
• Mozilla/5.0 (Android 14; Mobile; rv:139.0) Gecko/22812020 Firefox/139.0
• Mozilla/5.0 (Android 13; Mobile; rv:139.0) Gecko/20894748 Firefox/139.0
• Mozilla/5.0 (Android 10; Mobile; rv:139.0) Gecko/16478906 Firefox/139.0
• Mozilla/5.0 (Android 12; Mobile; rv:139.0) Gecko/16027185 Firefox/139.0 [ip:87.9.215.169]
• Mozilla/5.0 (Android 10; Mobile; rv:139.0) Gecko/21359552 Firefox/139.0
• Mozilla/5.0 (Android 12; Mobile; rv:139.0) Gecko/27466927 Firefox/139.0 [ip:5.91.225.75]
• Mozilla/5.0 (Android 12; Mobile; rv:139.0) Gecko/18065157 Firefox/139.0
• Mozilla/5.0 (Android 12; Mobile; rv:139.0) Gecko/15153222 Firefox/139.0 [ip:37.182.176.64]
• Mozilla/5.0 (Android 10; Mobile; rv:139.0) Gecko/11963164 Firefox/139.0 [ip:181.230.162.10]
• Mozilla/5.0 (Android 11; Mobile; rv:139.0) Gecko/24985801 Firefox/139.0
• Mozilla/5.0 (Android 11; Mobile; rv:139.0) Gecko/19400876 Firefox/139.0
• Mozilla/5.0 (Android 10; Mobile; rv:139.0) Gecko/27397786 Firefox/139.0 [ip:185.231.38.30]
• Mozilla/5.0 (Android 14; Mobile; rv:139.0) Gecko/23401927 Firefox/139.0
• Mozilla/5.0 (Android 13; Mobile; rv:139.0) Gecko/27548181 Firefox/139.0
• Mozilla/5.0 (Android 12; Mobile; rv:139.0) Gecko/17183332 Firefox/139.0
• Mozilla/5.0 (Android 13; Mobile; rv:139.0) Gecko/23529514 Firefox/139.0