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



Address:   172.1.0.0             10101100 .00000001.00000000.00000000
Netmask: 255.0.0.0 = 8 11111111 .00000000.00000000.00000000
Wildcard: 0.255.255.255 00000000 .11111111.11111111.11111111
=> Network: 172.0.0.0/8 10101100 .00000000.00000000.00000000 (Class B)
Broadcast: 172.255.255.255 10101100 .11111111.11111111.11111111
HostMin: 172.0.0.1 10101100 .00000000.00000000.00000001
HostMax: 172.255.255.254 10101100 .11111111.11111111.11111110
Hosts/Net: 16777214

Subnets Netmask: 255.224.0.0 = 11 11111111.111 00000.00000000.00000000
Wildcard: 0.31.255.255 00000000.000 11111.11111111.11111111
Network: 172.0.0.0/11 10101100.000 00000.00000000.00000000 (Class B)
Broadcast: 172.31.255.255 10101100.000 11111.11111111.11111111
HostMin: 172.0.0.1 10101100.000 00000.00000000.00000001
HostMax: 172.31.255.254 10101100.000 11111.11111111.11111110
Hosts/Net: 2097150

Network: 172.32.0.0/11 10101100.001 00000.00000000.00000000 (Class B)
Broadcast: 172.63.255.255 10101100.001 11111.11111111.11111111
HostMin: 172.32.0.1 10101100.001 00000.00000000.00000001
HostMax: 172.63.255.254 10101100.001 11111.11111111.11111110
Hosts/Net: 2097150

Network: 172.64.0.0/11 10101100.010 00000.00000000.00000000 (Class B)
Broadcast: 172.95.255.255 10101100.010 11111.11111111.11111111
HostMin: 172.64.0.1 10101100.010 00000.00000000.00000001
HostMax: 172.95.255.254 10101100.010 11111.11111111.11111110
Hosts/Net: 2097150

Network: 172.96.0.0/11 10101100.011 00000.00000000.00000000 (Class B)
Broadcast: 172.127.255.255 10101100.011 11111.11111111.11111111
HostMin: 172.96.0.1 10101100.011 00000.00000000.00000001
HostMax: 172.127.255.254 10101100.011 11111.11111111.11111110
Hosts/Net: 2097150

Network: 172.128.0.0/11 10101100.100 00000.00000000.00000000 (Class B)
Broadcast: 172.159.255.255 10101100.100 11111.11111111.11111111
HostMin: 172.128.0.1 10101100.100 00000.00000000.00000001
HostMax: 172.159.255.254 10101100.100 11111.11111111.11111110
Hosts/Net: 2097150

Network: 172.160.0.0/11 10101100.101 00000.00000000.00000000 (Class B)
Broadcast: 172.191.255.255 10101100.101 11111.11111111.11111111
HostMin: 172.160.0.1 10101100.101 00000.00000000.00000001
HostMax: 172.191.255.254 10101100.101 11111.11111111.11111110
Hosts/Net: 2097150

Network: 172.192.0.0/11 10101100.110 00000.00000000.00000000 (Class B)
Broadcast: 172.223.255.255 10101100.110 11111.11111111.11111111
HostMin: 172.192.0.1 10101100.110 00000.00000000.00000001
HostMax: 172.223.255.254 10101100.110 11111.11111111.11111110
Hosts/Net: 2097150

Network: 172.224.0.0/11 10101100.111 00000.00000000.00000000 (Class B)
Broadcast: 172.255.255.255 10101100.111 11111.11111111.11111111
HostMin: 172.224.0.1 10101100.111 00000.00000000.00000001
HostMax: 172.255.255.254 10101100.111 11111.11111111.11111110
Hosts/Net: 2097150

Subnets: 8
Hosts: 16777200

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.