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 (Windows NT 10.0; Win64; x64; rv:66.0) Gecko/20100101 Firefox/66.0 [ip:202.61.226.98]
• Mozilla/5.0 (X11; Ubuntu; Linux i686; rv:66.0) Gecko/20100101 Firefox/66.0 [ip:151.36.53.22]
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:66.0) Gecko/20100101 Firefox/66.0 [ip:168.101.48.63]
• Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:66.0) Gecko/20100101 Firefox/66.0 [ip:181.110.190.226]
• Mozilla/5.0 (X11; Ubuntu; Linux i686; rv:66.0) Gecko/20100101 Firefox/66.0 [ip:201.234.92.13]
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:66.0) Gecko/20100101 Firefox/66.0 [ip:168.101.48.54]
• Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:66.0) Gecko/20100101 Firefox/66.0 [ip:38.51.94.244]
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_1; rv:66.0.5) Gecko/20100101 Firefox/66.0.5
• Mozilla/5.0 (X11; Linux x86_64; rv:66.0.3) Gecko/20100101 Firefox/66.0.3
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_3; rv:66.0.4) Gecko/20100101 Firefox/66.0.4
• Mozilla/5.0 (X11; Linux i686 on x86_64; rv:66.0.5) Gecko/20100101 Firefox/66.0.5
• Mozilla/5.0 (X11; Ubuntu; Linux i686; rv:66.0) Gecko/20100101 Firefox/66.0 [ip:93.34.83.3]
• Mozilla/5.0 (X11; Ubuntu; Linux i686; rv:66.0) Gecko/20100101 Firefox/66.0 [ip:93.34.81.112]
• Mozilla/5.0 (X11; Ubuntu; Linux i686; rv:66.0) Gecko/20100101 Firefox/66.0 [ip:93.34.83.151]
• Mozilla/5.0 (X11; Ubuntu; Linux i686; rv:66.0) Gecko/20100101 Firefox/66.0 [ip:5.77.76.187]
• Mozilla/5.0 (X11; Ubuntu; Linux i686; rv:66.0) Gecko/20100101 Firefox/66.0 [ip:79.168.87.156]
• Mozilla/5.0 (X11; U; SunOS sun4u; en-US; rv:66.0) Gecko/20100101 Firefox/66.0
• Mozilla/5.0 (X11; Ubuntu; Linux i686; rv:66.0) Gecko/20100101 Firefox/66.0 [ip:62.170.29.57]
• Mozilla/5.0 (Android 3.2.4; Mobile; rv:66.0) Gecko/66.0 Firefox/66.0
• Mozilla/5.0 (Android 9.0; Tablet; rv:66.0) Gecko/66.0 Firefox/66.0
• Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:66.0) Gecko/20100101 Firefox/66.0 [ip:5.179.130.46]
• Mozilla/5.0 (X11; Ubuntu; Linux i686; rv:66.0) Gecko/20100101 Firefox/66.0 [ip:93.34.81.96]
• Mozilla/5.0 (X11; Ubuntu; Linux i686; rv:66.0) Gecko/20100101 Firefox/66.0 [ip:93.34.83.211]
• Mozilla/5.0 (X11; Ubuntu; Linux i686; rv:66.0) Gecko/20100101 Firefox/66.0 [ip:93.34.81.207]
• Mozilla/5.0 (X11; Ubuntu; Linux i686; rv:66.0) Gecko/20100101 Firefox/66.0 [ip:93.34.80.63]
• Mozilla/5.0 (X11; Ubuntu; Linux i686; rv:66.0) Gecko/20100101 Firefox/66.0 [ip:93.34.81.107]
• Mozilla/5.0 (X11; Ubuntu; Linux i686; rv:66.0) Gecko/20100101 Firefox/66.0 [ip:5.179.163.68]
• Mozilla/5.0 (X11; Ubuntu; Linux i686; rv:66.0) Gecko/20100101 Firefox/66.0 [ip:5.77.73.18]
• Mozilla/5.0 (Android 7.1.1; LAVA A2 Build/LMY47D; Mobile; rv:66.0) Gecko/66.0 Firefox/66.0
• Mozilla/5.0 (Android 5.1; S905TL Build/LMY47D; Mobile; rv:66.0) Gecko/66.0 Firefox/66.0
• Mozilla/5.0 (Android 6.0.1; Ilium L610 Build/MRA58K; Mobile; rv:66.0) Gecko/66.0 Firefox/66.0
• Mozilla/5.0 (Android 4.3; Mobile; rv:66.0.2) Gecko/66.0.2 Firefox/66.0.2
• Mozilla/5.0 (FreeBSD; Viera; ru:66.0) Gecko/20100101 Firefox/66.0
• Mozilla/5.0 (Android 6.0; PMT3318_3GE Build/MRA58K; Tablet; rv:66.0) Gecko/66.0 Firefox/66.0
• Mozilla/5.0 (Android 7.0; es-es; Mobile; rv:66.0) Gecko/66.0 Firefox/66.0
• Mozilla/5.0 (Windows NT 6.1; rv:66.0) Gecko/20100101 Firefox/66.0 anonymized by Abelssoft 298666885
• Mozilla/5.0 (Windows NT 10.0; WOW64; rv:66.0.5) Gecko/20100101 Firefox/66.0.5
• Mozilla/5.0 (Android 6.0; NV-E508 Build/MRA58K; Mobile; rv:66.0) Gecko/66.0 Firefox/66.0
• Mozilla/5.0 (X11; OpenBSD amd64; rv:56.0) Gecko/20100101 Firefox/66.0
• Mozilla/5.0 (Windows NT 10.0; rv:66.0) Gecko/20100101 Firefox/66.0 anonymized by Abelssoft 546631737
• Mozilla/5.0 (Windows NT 6.1; WOW64; rv:66.0) Gecko/20100101 Firefox/66.0,gzip(gfe)
• Mozilla/5.0 (Android 10; Tablet; rv:66.0) Gecko/66.0 Firefox/66.0
• Mozilla/5.0 (Windows NT 6.3; rv:66.0.2) Gecko/20100101 Firefox/66.0.2
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:66.0.5) Gecko/20100101 Firefox/66.0.5
• Mozilla/5.0 (X11; Ubuntu; Linux i686; rv:66.0) Gecko/20100101 Firefox/66.0,gzip(gfe)
• Mozilla/5.0 (Android 5.1;AppleWebKit/537.16;Build/LMY47I; Tablet; rv:66.0) Gecko/66.0 Firefox/66.0
• Mozilla/5.0 (Windows NT 6.1; rv:66.0.4) Gecko/20100101 Firefox/66.0.4
• Mozilla/5.0 (Windows NT 10.0; WOW64; rv:66.0.4) Gecko/20100101 Firefox/66.0.4
• Mozilla/5.0 (Android 6.1; Tecno phantom 8 Build/LMY47V; Mobile; rv:66.0) Gecko/66.0 Firefox/66.0
• Mozilla/5.0 (Android 6.0; BP326 Forte Build/MRA58K; Mobile; rv:66.0) Gecko/66.0 Firefox/66.0
• Mozilla/5.0 (Android 7.0; i5050 Build/NRD90M; Mobile; rv:66.0) Gecko/66.0 Firefox/66.0
• Mozilla/5.0 (Android 6.0.1; Mobile; rv:66.0.5) Gecko/66.0.5 Firefox/66.0.5
• Mozilla/5.0 (Windows NT 6.2; Win64; x64; rv:64.0) Gecko/20100101 Firefox/66.0
• Mozilla/5.0 (Android 8.1.1; Micromax Q465 Build/LMY47D; Mobile; rv:66.0) Gecko/66.0 Firefox/66.0
• Mozilla/5.0 (Windows NT 6.2; rv:66.0.3) Gecko/20100101 Firefox/66.0.3
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_5; rv:66.0.2) Gecko/20100101 Firefox/66.0.2
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:66.0.2) Gecko/20100101 Firefox/66.0.2
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; WOW64; rv:41.0) Gecko/20100101 Firefox/66.0.2 (x64 de) Anonymisiert durch AlMiSoft Browser-Maulkorb 43169481
• Mozilla/5.0 (Android 6.0; ONYX-1 Build/MRA58K; Mobile; rv:66.0) Gecko/66.0 Firefox/66.0
• Mozilla/5.0 (Android 6.0; Z12 Build/MRA58K; Mobile; rv:66.0) Gecko/66.0 Firefox/66.0
• Mozilla/5.0 (Android 5.1; A1 Armour Build/LMY47I; Mobile; rv:66.0) Gecko/66.0 Firefox/66.0
• Mozilla/5.0 (Android 6.0.1; ZTE-Z956 Build/MMB29M; Mobile; rv:66.0) Gecko/66.0 Firefox/66.0
• Mozilla/5.0 (Android 5.1; YU 6000 Build/LMY47D; Mobile; rv:66.0) Gecko/66.0 Firefox/66.0
• Mozilla/5.0 (Windows NT 6.3; WOW64; rv:33.0) Gecko/20100101 Firefox/66.0
• Mozilla/5.0 (Android 6.0; Singtech S1 Build/MRA58K; Mobile; rv:66.0) Gecko/66.0 Firefox/66.0
• Mozilla/5.0 (Android 6.0.1; BUSH SPIRA D4 5.5 Build/MMB29M; Mobile; rv:66.0) Gecko/66.0 Firefox/66.0
• Mozilla/5.0 (Android 7.0; X417 Amaze Build/NRD90M; Mobile; rv:66.0) Gecko/66.0 Firefox/66.0
• Mozilla/5.0 (Android 6.0; M-PPxX532L Build/MRA58K; Mobile; rv:66.0) Gecko/66.0 Firefox/66.0
• Mozilla/5.0 (Android 7.1.2; CASPER_VIA_G1_Plus Build/N2G47H; Mobile; rv:66.0) Gecko/66.0 Firefox/66.0
• Mozilla/5.0 (Android 6.0; QMobile E1 Build/MRA58K; Mobile; rv:66.0) Gecko/66.0 Firefox/66.0
• Mozilla/5.0 (Android 6.0; en-gb; Mobile; rv:66.0) Gecko/66.0 Firefox/66.0
• Mozilla/5.0 (Android 6.0;Build/MRA58K; Mobile; rv:66.0) Gecko/66.0 Firefox/66.0
• Mozilla/5.0 (Windows NT 10.0; rv:66.0) Gecko/20100101 Firefox/66.0 anonymized by Abelssoft 1655911765
• Mozilla/5.0 (Windows NT 6.1; rv:66.0) Gecko/20100101 Firefox/66.0,gzip(gfe)
• Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:66.0.2) Gecko/20100101 Firefox/66.0.2
• Mozilla/5.0 (Android 6.0; ru-ru; Mobile; rv:66.0) Gecko/66.0 Firefox/66.0
• Mozilla/5.0 (Android 5.1;AppleWebKit/537.36;Build/LMY47I; Tablet; rv:66.0) Gecko/66.0 Firefox/66.0
• Mozilla/5.0 (Android 7.0.99; Tablet; rv:66.0) Gecko/66.0 Firefox/66.0
• Mozilla/5.0 (Android 6.0;AppleWebKit/535.19;Build/MRA58K; Mobile; rv:66.0) Gecko/66.0 Firefox/66.0
• Mozilla/5.0 (Android iDOS; Mobile; rv:66.0) Gecko/66.0 Firefox/66.0
• Mozilla/5.0 (Windows NT 10.0; rv:66.0) Gecko/20100101 Firefox/66.0 anonymized by Abelssoft 1868253856
• Mozilla/5.0 (Windows NT 10.0; rv:66.0) Gecko/20100101 Firefox/66.0 anonymized by Abelssoft 514470384
• Mozilla/5.0 (Android 6.0; MPQC124i Build/MRA58K; Tablet; rv:66.0) Gecko/66.0 Firefox/66.0
• Mozilla/5.0 (Android 7.0; ru-ru; Tablet; rv:66.0) Gecko/66.0 Firefox/66.0
• Mozilla/5.0 (Android 6.1; AG-06 Build/KOT49H; Tablet; rv:66.0) Gecko/66.0 Firefox/66.0
• Mozilla/5.0 (Android 7.0; U70A Build/NRD90M; Tablet; rv:66.0) Gecko/66.0 Firefox/66.0
• Mozilla/5.0 (Windows NT 6.1; rv:66.0) Gecko/20100101 Firefox/66.0 anonymized by Abelssoft 1006770566
• Mozilla/5.0 (Windows NT 6.1; rv:66.0) Gecko/20100101 Firefox/66.0 anonymized by Abelssoft 1903876617
• Mozilla/5.0 (Android 7.0; ru-ru; Mobile; rv:66.0) Gecko/66.0 Firefox/66.0
• Mozilla/5.0 (Android 6.0; es-es; Mobile; rv:66.0) Gecko/66.0 Firefox/66.0
• Mozilla/5.0 (Android 6.0.1; L4 Build/MOB31K; Mobile; rv:66.0) Gecko/66.0 Firefox/66.0
• Mozilla/5.0 (Windows NT 10.0; rv:66.0) Gecko/20100101 Firefox/66.0 anonymized by Abelssoft 125577078
• Mozilla/5.0 (Windows NT 10.0; rv:66.0) Gecko/20100101 sqDYqQtX-14 Firefox/66.0
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:66.0) Gecko/20100101 W4TESiHi-42 Firefox/66.0
• Mozilla/5.0 (Android 6.0; super 8 Build/LMY47I; Tablet; rv:66.0) Gecko/66.0 Firefox/66.0
• Mozilla/5.0 (Android 5.1; MS45 Build/LMY47D; Mobile; rv:66.0) Gecko/66.0 Firefox/66.0
• Mozilla/5.0 (Android 7.0; Archos Core 55 4G Build/NRD90M; Mobile; rv:66.0) Gecko/66.0 Firefox/66.0
• Mozilla/5.0 (Android 5.1;Build/L701_4G; Tablet; rv:66.0) Gecko/66.0 Firefox/66.0
• Mozilla/5.0 (Android 5.1;AppleWebKit/535.19;Build/LMY47I; Tablet; rv:66.0) Gecko/66.0 Firefox/66.0
• Mozilla/5.0 (Android 5.1.99;AppleWebKit/537.36;Build/LMY47V; Tablet; rv:66.0) Gecko/66.0 Firefox/66.0