Someone updated .Net Framework on Win2003 server (required for another app). Unfortunately didn't check existing IIS sites and their requirements so it broke a custom c# web site. Uninstalled without error in the OS, but website still 404ing, reboot and iisreset didn't fix it. "%systemroot%\Microsoft.NET\Framework\ VERSION \aspnet_regiis.exe" –i Then iisreset. All good :) Read about it here http://msdn.microsoft.com/en-us/library/k6h9cz8h(v=vs.80).aspx
Here are the possible Class C subnets: | Bits | Mask | CIDR | Subnets | Hosts | | 0 | 255.255.255.0 | /24 | 1 | 254 | | 1 | 255.255.255.128 | /25 | 2 | 126 | | 2 | 255.255.255.192 | /26 | 4 | 62 | | 3 | 255.255.255.224 | /27 | 8 | 30 | | 4 | 255.255.255.240 | /28 | 16 | 14 | | 5 | 255.255.255.248 | /29 | 32 | 6 | | 6 | 255.255.255.252 | /30 | 64 | 2 | * Classless Inter-Domain Routing notation