User Agent String.Com 

User Agent String explained :

Netscape 4.79C-SGI
Mozilla	MozillaProductSlice. Claims to be a Mozilla based user agent, which is only true for Gecko browsers like Firefox and Netscape. For all other user agents it means 'Mozilla-compatible'. In modern browsers, this is only used for historical reasons. It has no real meaning anymore
4.79C-SGI	Browser version
en	Language Tag, indicates the language for which the client had been localized (e.g. menus and buttons in the user interface) en = English
X11	X Window System a windowing system for bitmap displays
I	Security values: N for no security U for strong security I for weak security
IRIX64 6.5 IP28	Operating System: IRIX Version 6.5 (IP28 = processor) running on a Indigo2 model with a R10000 CPU at 190 Mhz
Last visit:	2021.08.31 07:11
All Netscape user agent strings