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 14; Mobile; rv:139.0) Gecko/21575803 Firefox/139.0
• Mozilla/5.0 (Android 12; Mobile; rv:139.0) Gecko/12594680 Firefox/139.0
• Mozilla/5.0 (Android 13; Mobile; rv:139.0) Gecko/139.0 Firefox/139.0 [ip:5.62.41.32]
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:139.0) Gecko/20100101 Firefox/139.0 [ip:87.16.156.107]
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:139.0) Gecko/20100101 Firefox/139.0 [ip:195.5.14.56]
• Mozilla/5.0 (Android 13; Mobile; rv:139.0) Gecko/139.0 Firefox/139.0 [ip:151.47.220.204]
• Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:139.0) Gecko/20100101 Firefox/139.0 [ip:87.16.170.250]
• Mozilla/5.0 (Android 12; Mobile; rv:139.0) Gecko/139.0 Firefox/139.0 [ip:151.19.215.194]
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:139.0) Gecko/20100101 Firefox/139.0 [ip:79.57.42.78]
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:139.0) Gecko/20100101 Firefox/139.0 [ip:181.214.218.203]
• Mozilla/5.0 (Android 12; Mobile; rv:139.0) Gecko/139.0 Firefox/139.0 [ip:151.19.200.72]
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:139.0) Gecko/20100101 Firefox/139.0 [ip:2.35.64.227]
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:139.0) Gecko/20100101 Firefox/139.0 [ip:93.65.240.97]
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:139.0) Gecko/20100101 Firefox/139.0 [ip:90.187.61.49]
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:139.0) Gecko/20100101 Firefox/139.0 [ip:216.128.26.76]
• Mozilla/5.0 (Android 14; Mobile; rv:139.0) Gecko/139.0 Firefox/139.0 [ip:62.240.135.16]
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:139.0) Gecko/20100101 Firefox/139.0 [ip:93.238.168.88]
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:139.0) Gecko/20100101 Firefox/139.0 [ip:93.65.240.113]
• Mozilla/5.0 (Android 12; Mobile; rv:139.0) Gecko/139.0 Firefox/139.0 [ip:151.19.161.88]
• Mozilla/5.0 (Android 12; Mobile; rv:139.0) Gecko/139.0 Firefox/139.0 [ip:151.47.134.251]
• Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:139.0) Gecko/20100101 Firefox/139.0 [ip:156.18.72.113]
• Mozilla/5.0 (Android 12; Mobile; rv:139.0) Gecko/139.0 Firefox/139.0 [ip:151.47.134.66]
• Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:139.0) Gecko/20100101 Firefox/139.0 [ip:80.228.137.106]
• Mozilla/5.0 (Android 12; Mobile; rv:139.0) Gecko/139.0 Firefox/139.0 [ip:93.40.192.231]
• Mozilla/5.0 (Android 12; Mobile; rv:139.0) Gecko/139.0 Firefox/139.0 [ip:151.47.167.161]
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:139.0) Gecko/20100101 Firefox/139.0 [ip:151.48.128.241]
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:139.0) Gecko/20100101 Firefox/139.0 [ip:99.247.25.10]
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:139.0) Gecko/20100101 Firefox/139.0 [ip:90.156.111.113]
• Mozilla/5.0 (Windows NT 10.0; rv:139.0) Gecko/20100101 Firefox/139.0 [ip:76.139.214.139]
• Mozilla/5.0 (Android 14; Mobile; rv:139.0) Gecko/139.0 Firefox/139.0 [ip:217.249.215.22]
• Mozilla/5.0 (Android 12; Mobile; rv:139.0) Gecko/139.0 Firefox/139.0 [ip:151.19.216.225]
• Mozilla/5.0 (Android 12; Mobile; rv:139.0) Gecko/139.0 Firefox/139.0 [ip:151.19.132.148]
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:139.0) Gecko/20100101 Firefox/139.0 [ip:95.237.79.43]
• Mozilla/5.0 (Android 12; Mobile; rv:139.0) Gecko/139.0 Firefox/139.0 [ip:151.19.136.234]
• Mozilla/5.0 (Android 12; Mobile; rv:139.0) Gecko/139.0 Firefox/139.0 [ip:151.19.134.40]
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:139.0) Gecko/20100101 Firefox/139.0 [ip:31.13.115.2]
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:139.0) Gecko/20100101 Firefox/139.0 [ip:31.13.115.6]
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:139.0) Gecko/20100101 Firefox/139.0 [ip:93.45.52.239]
• Mozilla/5.0 (Android 13; Mobile; rv:139.0) Gecko/139.0 Firefox/139.0 [ip:159.242.234.186]
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:139.0) Gecko/20100101 Firefox/139.0 [ip:185.219.180.93]
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:139.0) Gecko/20100101 Firefox/139.0 [ip:88.147.58.136]
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:139.0) Gecko/20100101 Firefox/139.0 [ip:146.241.155.141]
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:139.0) Gecko/20100101 Firefox/139.0 [ip:151.47.140.28]
• Mozilla/5.0 (Android 14; Mobile; rv:139.0) Gecko/139.0 Firefox/139.0 [ip:217.246.152.90]
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:139.0) Gecko/20100101 Firefox/139.0 [ip:189.140.163.69]
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:139.0) Gecko/20100101 Firefox/139.0 [ip:173.68.67.73]
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:139.0) Gecko/20100101 Firefox/139.0 [ip:80.208.64.74]
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:139.0) Gecko/20100101 Firefox/139.0 [ip:88.147.48.187]
• Mozilla/5.0 (Android 15; Mobile; rv:139.0) Gecko/139.0 Firefox/139.0 [ip:146.70.147.119]
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:139.0) Gecko/20100101 Firefox/139.0 [ip:89.134.8.203]
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:139.0) Gecko/20100101 Firefox/139.0 [ip:109.52.204.85]
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:139.0) Gecko/20100101 Firefox/139.0 [ip:192.167.42.66]
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:139.0) Gecko/20100101 Firefox/139.0 [ip:195.85.176.106]
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:139.0) Gecko/20100101 Firefox/139.0 [ip:78.211.126.164]
• Mozilla/5.0 (Android 12; Mobile; rv:139.0) Gecko/139.0 Firefox/139.0 [ip:151.46.185.118]
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:139.0) Gecko/20100101 Firefox/139.0 [ip:151.47.203.49]
• Mozilla/5.0 (Android 12; Mobile; rv:139.0) Gecko/139.0 Firefox/139.0 [ip:151.44.204.98]
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:139.0) Gecko/20100101 Firefox/139.0 [ip:77.72.38.66]
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:139.0) Gecko/20100101 Firefox/139.0 [ip:88.147.41.221]
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:139.0) Gecko/20100101 Firefox/139.0 [ip:88.207.113.100]
• Mozilla/5.0 (Android 14; Mobile; rv:139.0) Gecko/139.0 Firefox/139.0 [ip:84.167.139.38]
• Mozilla/5.0 (Android 12; Mobile; rv:139.0) Gecko/139.0 Firefox/139.0 [ip:151.44.205.1]
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:139.0) Gecko/20100101 Firefox/139.0 [ip:86.185.30.60]
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:139.0) Gecko/20100101 Firefox/139.0 [ip:79.22.73.203]
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:139.0) Gecko/20100101 Firefox/139.0 [ip:93.38.40.68]
• Mozilla/5.0 (Android 14; Mobile; rv:139.0) Gecko/139.0 Firefox/139.0 [ip:80.187.70.219]
• Mozilla/5.0 (Android 12; Mobile; rv:139.0) Gecko/139.0 Firefox/139.0 [ip:151.44.198.87]
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:139.0) Gecko/20100101 Firefox/139.0 [ip:5.179.133.254]
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:139.0) Gecko/20100101 Firefox/139.0 [ip:5.88.173.230]
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:139.0) Gecko/20100101 Firefox/139.0 [ip:88.147.34.239]
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:139.0) Gecko/20100101 Firefox/139.0 [ip:151.47.97.4]
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:139.0) Gecko/20100101 Firefox/139.0 [ip:151.19.201.62]
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:139.0) Gecko/20100101 Firefox/139.0 [ip:146.241.145.202]
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:139.0) Gecko/20100101 Firefox/139.0 [ip:149.102.233.45]
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:139.0) Gecko/20100101 Firefox/139.0 TO-Browser/TOB7.139.0.207_10
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:139.0) Gecko/20100101 Firefox/139.0 [ip:188.174.217.0]
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:139.0) Gecko/20100101 Firefox/139.0 [ip:93.193.136.106]
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:139.0) Gecko/20100101 Firefox/139.0 [ip:146.241.199.171]
• Mozilla/5.0 (X11; Linux x86_64; rv:139.0) Gecko/20100101 Firefox/139.0 [ip:86.163.12.188]
• Mozilla/5.0 (Android 12; Mobile; rv:139.0) Gecko/139.0 Firefox/139.0 [ip:151.47.208.54]
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:139.0) Gecko/20100101 Firefox/139.0 [ip:93.39.225.122]
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:139.0) Gecko/20100101 Firefox/139.0 [ip:88.147.35.248]
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:139.0) Gecko/20100101 Firefox/139.0 [ip:37.65.26.189]
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:139.0) Gecko/20100101 Firefox/139.0 [ip:2.44.141.85]
• Mozilla/5.0 (Android 12; Mobile; rv:139.0) Gecko/139.0 Firefox/139.0 [ip:151.47.204.8]
• Mozilla/5.0 (Android 12; Mobile; rv:139.0) Gecko/139.0 Firefox/139.0 [ip:151.19.168.247]
• Mozilla/5.0 (Android 13; Mobile; rv:139.0) Gecko/139.0 Firefox/139.0 [ip:37.165.155.128]
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:139.0) Gecko/20100101 Firefox/139.0 [ip:46.10.57.5]
• Mozilla/5.0 (Android 10; Mobile; rv:139.0) Gecko/139.0 Firefox/139.0 [ip:84.142.254.140]
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:139.0) Gecko/20100101 Firefox/139.0 [ip:94.253.239.106]
• Mozilla/5.0 (Android 15; Mobile; rv:139.0) Gecko/139.0 Firefox/139.0 [ip:81.214.104.92]
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:139.0) Gecko/20100101 Firefox/139.0 [ip:88.147.42.227]
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:139.0) Gecko/20100101 Firefox/139.0 [ip:151.47.152.230]
• Mozilla/5.0 (Android 10; Mobile; rv:139.0) Gecko/139.0 Firefox/139.0 [ip:37.43.57.158]
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:139.0) Gecko/20100101 Firefox/139.0 [ip:100.12.187.195]
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:139.0) Gecko/20100101 Firefox/139.0 [ip:78.134.120.135]
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:139.0) Gecko/20100101 Firefox/139.0 [ip:93.193.131.92]
• Mozilla/5.0 (Android 14; Mobile; rv:139.0) Gecko/139.0 Firefox/139.0 [ip:79.203.100.103]
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:139.0) Gecko/20100101 Firefox/139.0 [ip:151.38.245.99]
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:139.0) Gecko/20100101 Firefox/139.0 [ip:84.0.215.197]