Windows Version and Builds Numbers

Operating System	Version / Build
Windows Server 2012	6.2.9200 (04.09.2012)
Windows Home Server 2011	6.1.8400 (05.04.2011)
Windows Server 2008 R2, SP1	6.1.7601
Windows Server 2008 R2, RTM	6.1.7600.16385 (22.10.2009)
Windows Server 2008	6.0.6001 (27.02.2008)
Windows Server 2003	5.2.3790.1218
Windows Server 2003, Service Pack 1	5.2.3790.1180
Windows Server 2003	5.2.3790 (24.04.2003)
Windows Home Server	5.2.3790 (16.06.2007)
Windows Server 2003 (Beta?)	5.2.3763
Windows .NET Server 2003 RC2	5.2.3718
Windows .NET Server Release Candidate 1 (RC1)	5.2.3660
Windows .NET Server Beta 3	5.2.3590
Windows .NET Server interim	5.2.3541
Windows 2000	5.00.2195 (17.02.2000)
Windows 2000 (Beta 3)	5.00.2183
Windows 2000 (Beta 3 RC2)	5.00.2128
Windows 2000 (Beta 3)	5.00.2031
Windows NT 5.00 (Beta 2)	5.00.1515
Windows NT 4.00	4.00.1381 (24.08.1996)
Windows NT 3.51	3.51.1057 (30.05.1995)
Windows NT 3.5	3.50.807 (21.09.1994)
Windows NT 3.1	3.10.528 (27.07.1993)
Whistler Server interim release	2410
Whistler Server interim release	2267
Whistler Server alpha	2257
Whistler Server Preview	2250