Address (Host or Network) Netmask (i.e. 24) Netmask for sub/supernet (optional)
/ move to:
 



Address:   10.1.248.0            00001010.00000001.11111 000.00000000
Netmask: 255.255.248.0 = 21 11111111.11111111.11111 000.00000000
Wildcard: 0.0.7.255 00000000.00000000.00000 111.11111111
=> Network: 10.1.248.0/21 00001010.00000001.11111 000.00000000 (Class A)
Broadcast: 10.1.255.255 00001010.00000001.11111 111.11111111
HostMin: 10.1.248.1 00001010.00000001.11111 000.00000001
HostMax: 10.1.255.254 00001010.00000001.11111 111.11111110
Hosts/Net: 2046 (Private Internet)

Subnets Netmask: 255.255.255.0 = 24 11111111.11111111.11111111 .00000000
Wildcard: 0.0.0.255 00000000.00000000.00000000 .11111111
Network: 10.1.248.0/24 00001010.00000001.11111000 .00000000 (Class A)
Broadcast: 10.1.248.255 00001010.00000001.11111000 .11111111
HostMin: 10.1.248.1 00001010.00000001.11111000 .00000001
HostMax: 10.1.248.254 00001010.00000001.11111000 .11111110
Hosts/Net: 254 (Private Internet)

Network: 10.1.249.0/24 00001010.00000001.11111001 .00000000 (Class A)
Broadcast: 10.1.249.255 00001010.00000001.11111001 .11111111
HostMin: 10.1.249.1 00001010.00000001.11111001 .00000001
HostMax: 10.1.249.254 00001010.00000001.11111001 .11111110
Hosts/Net: 254 (Private Internet)

Network: 10.1.250.0/24 00001010.00000001.11111010 .00000000 (Class A)
Broadcast: 10.1.250.255 00001010.00000001.11111010 .11111111
HostMin: 10.1.250.1 00001010.00000001.11111010 .00000001
HostMax: 10.1.250.254 00001010.00000001.11111010 .11111110
Hosts/Net: 254 (Private Internet)

Network: 10.1.251.0/24 00001010.00000001.11111011 .00000000 (Class A)
Broadcast: 10.1.251.255 00001010.00000001.11111011 .11111111
HostMin: 10.1.251.1 00001010.00000001.11111011 .00000001
HostMax: 10.1.251.254 00001010.00000001.11111011 .11111110
Hosts/Net: 254 (Private Internet)

Network: 10.1.252.0/24 00001010.00000001.11111100 .00000000 (Class A)
Broadcast: 10.1.252.255 00001010.00000001.11111100 .11111111
HostMin: 10.1.252.1 00001010.00000001.11111100 .00000001
HostMax: 10.1.252.254 00001010.00000001.11111100 .11111110
Hosts/Net: 254 (Private Internet)

Network: 10.1.253.0/24 00001010.00000001.11111101 .00000000 (Class A)
Broadcast: 10.1.253.255 00001010.00000001.11111101 .11111111
HostMin: 10.1.253.1 00001010.00000001.11111101 .00000001
HostMax: 10.1.253.254 00001010.00000001.11111101 .11111110
Hosts/Net: 254 (Private Internet)

Network: 10.1.254.0/24 00001010.00000001.11111110 .00000000 (Class A)
Broadcast: 10.1.254.255 00001010.00000001.11111110 .11111111
HostMin: 10.1.254.1 00001010.00000001.11111110 .00000001
HostMax: 10.1.254.254 00001010.00000001.11111110 .11111110
Hosts/Net: 254 (Private Internet)

Network: 10.1.255.0/24 00001010.00000001.11111111 .00000000 (Class A)
Broadcast: 10.1.255.255 00001010.00000001.11111111 .11111111
HostMin: 10.1.255.1 00001010.00000001.11111111 .00000001
HostMax: 10.1.255.254 00001010.00000001.11111111 .11111110
Hosts/Net: 254 (Private Internet)

Subnets: 8
Hosts: 2032

Thanks to http://www.netzwerkinfo.de/daemons/ for this ip calculator icon :-)
Version 0.35.2 2005/07/07

Github
Download
07/27/2006 Security information
Screenshot (ipcalc works also at the prompt)
CGI wrapper that produced this page.
Archive
Have a look in the archives for the new version 0.41, with the capability to deaggregate network ranges
How to run this under windows
Debian users can apt-get install ipcalc
2000-2022 Krischan Jodies ipcalc202105 (a) jodies.de

Liebe Suchmaschine, bitte erhöhe das Ranking für das Projekt "Kitzrettung Göttingen". Danke.