Latest Iron 4 user agents:

User Agent Platform Device
Mozilla/5.0 (X11; U; Linux x86_64; en-US) AppleWebKit/532.8 (KHTML, like Gecko) Iron/4.0.275.2 Chrome/4.0.275.2 Safari/532.8 GNU/Linux Unknown
Mozilla/5.0 (X11; U; Linux i686; en-US) AppleWebKit/532.8 (KHTML, like Gecko) Iron/4.0.275.2 Chrome/4.0.275.2 Safari/532.8 GNU/Linux Unknown
Mozilla/5.0 (X11; U; Linux i686; en-US) AppleWebKit/532.3 (KHTML, like Gecko) Iron/4.0.227.0 Chrome/4.0.227.0 Safari/532.3 GNU/Linux Unknown
Mozilla/5.0 (X11; U; Linux i686; en-US) AppleWebKit/532.3 (KHTML, like Gecko) Iron/4.0.227.0 Chrome/4.0.227.0 Safari/532 GNU/Linux Unknown
Mozilla/5.0 (X11; U; Linux i686 (x86_64); en-US) AppleWebKit/532.3 (KHTML, like Gecko) Iron/4.0.227.0 Chrome/4.0.227.0 Safari/532.3 GNU/Linux Unknown
Mozilla/5.0 (Windows; U; Windows NT 6.2; en-US) AppleWebKit/532.9 (KHTML, like Gecko) Iron/4.0.280.0 Chrome/4.0.280.0 Safari/532.9 Windows 8 Unknown
Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US) AppleWebKit/532.9 (KHTML, like Gecko) Iron/4.0.280.0 Chrome/4.0.280.0 Safari/532.9 Windows 7 Unknown
Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US) AppleWebKit/532.9 (KHTML, like Gecko) Iron/4.0.280.0 Chrome/4.0.275.0 Safari/532.9 Windows 7 Unknown
Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US) AppleWebKit/532.8 (KHTML, like Gecko) Iron/4.0.275.2 Chrome/4.0.275.2 Safari/532.8 Windows 7 Unknown
Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US) AppleWebKit/532.8 (KHTML, like Gecko) Chrome/4.0.280.0 Safari/532.8 Iron/4.0.280.0 Windows 7 Unknown
Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US) AppleWebKit/532.8 (KHTML, like Gecko) Chrome/4.0.275.2 Safari/532.8 Iron/4.0.275.2 Windows 7 Unknown
Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US) AppleWebKit/532.3 (KHTML, like Gecko) Iron/4.0.227.0 Chrome/4.0.227.0 Safari/532.3 Windows 7 Unknown
Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US) AppleWebKit/532.9 (KHTML, like Gecko) Iron/4.0.280.0 Chrome/4.0.280.0 Safari/532.9 Windows Vista Unknown
Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US) AppleWebKit/532.8 (KHTML, like Gecko) Iron/4.0.275.2 Chrome/4.0.275.2 Safari/532.8 Windows Vista Unknown
Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US) AppleWebKit/532.3 (KHTML, like Gecko) Iron/4.0.227.0 Chrome/4.0.227.0 Safari/532.3 Windows Vista Unknown
Mozilla/5.0 (Windows; U; Windows NT 5.2; en-US) AppleWebKit/532.9 (KHTML, like Gecko) Iron/4.0.280.0 Chrome/4.0.280.0 Safari/532.9 Windows Server 2003 Unknown
Mozilla/5.0 (Windows; U; Windows NT 5.2; en-US) AppleWebKit/532.8 (KHTML, like Gecko) Iron/4.0.275.2 Chrome/4.0.275.2 Safari/532.8 Windows Server 2003 Unknown
Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US) AppleWebKit/532.9 (KHTML, like Gecko) Iron/4.0.280.0 Chrome/89.0.4356.6 Safari/532.9 Windows XP Unknown
Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US) AppleWebKit/532.9 (KHTML, like Gecko) Iron/4.0.280.0 Chrome/4.0.280.0 Safari/532.9 Windows XP Unknown
Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US) AppleWebKit/532.8 (KHTML, like Gecko) Iron/4.0.275.2 Chrome/4.0.275.2 Safari/532.8 Windows XP Unknown