ip
ipku.in

IPv4 Subnet Calculator

Enter an IP with a CIDR prefix or a subnet mask to see its network, broadcast, host range, and host count. You can also split the network into smaller subnets.

$ ipcalc
Try:192.168.1.10/2410.0.0.0/8172.16.5.4/20203.0.113.9/29
IPv6 calculator →
private IP (RFC 1918)10.97.128.0/17
network10.97.128.0/17
broadcast10.97.255.255
first host10.97.128.1
last host10.97.255.254
subnet mask255.255.128.0
wildcard0.0.127.255
addresses32,768
usable hosts32,766
classA
ipcalc 10.97.128.0/17
address00001010.01100001.10000000.00000000
subnet mask11111111.11111111.10000000.00000000
network00001010.01100001.10000000.00000000
broadcast00001010.01100001.11111111.11111111
green = network part, grey = host part
hex0x0a618000
decimal174161920
reverse dns0.128.97.10.in-addr.arpa
ipv4-mapped::ffff:a61:8000

/17 split into /24 · 128 subnets

close ×
#networkhost rangebroadcast
110.97.128.0/2410.97.128.1 – 10.97.128.25410.97.128.255
210.97.129.0/2410.97.129.1 – 10.97.129.25410.97.129.255
310.97.130.0/2410.97.130.1 – 10.97.130.25410.97.130.255
410.97.131.0/2410.97.131.1 – 10.97.131.25410.97.131.255
510.97.132.0/2410.97.132.1 – 10.97.132.25410.97.132.255
610.97.133.0/2410.97.133.1 – 10.97.133.25410.97.133.255
710.97.134.0/2410.97.134.1 – 10.97.134.25410.97.134.255
810.97.135.0/2410.97.135.1 – 10.97.135.25410.97.135.255
910.97.136.0/2410.97.136.1 – 10.97.136.25410.97.136.255
1010.97.137.0/2410.97.137.1 – 10.97.137.25410.97.137.255
1110.97.138.0/2410.97.138.1 – 10.97.138.25410.97.138.255
1210.97.139.0/2410.97.139.1 – 10.97.139.25410.97.139.255
1310.97.140.0/2410.97.140.1 – 10.97.140.25410.97.140.255
1410.97.141.0/2410.97.141.1 – 10.97.141.25410.97.141.255
1510.97.142.0/2410.97.142.1 – 10.97.142.25410.97.142.255
1610.97.143.0/2410.97.143.1 – 10.97.143.25410.97.143.255
1710.97.144.0/2410.97.144.1 – 10.97.144.25410.97.144.255
1810.97.145.0/2410.97.145.1 – 10.97.145.25410.97.145.255
1910.97.146.0/2410.97.146.1 – 10.97.146.25410.97.146.255
2010.97.147.0/2410.97.147.1 – 10.97.147.25410.97.147.255
2110.97.148.0/2410.97.148.1 – 10.97.148.25410.97.148.255
2210.97.149.0/2410.97.149.1 – 10.97.149.25410.97.149.255
2310.97.150.0/2410.97.150.1 – 10.97.150.25410.97.150.255
2410.97.151.0/2410.97.151.1 – 10.97.151.25410.97.151.255
2510.97.152.0/2410.97.152.1 – 10.97.152.25410.97.152.255
2610.97.153.0/2410.97.153.1 – 10.97.153.25410.97.153.255
2710.97.154.0/2410.97.154.1 – 10.97.154.25410.97.154.255
2810.97.155.0/2410.97.155.1 – 10.97.155.25410.97.155.255
2910.97.156.0/2410.97.156.1 – 10.97.156.25410.97.156.255
3010.97.157.0/2410.97.157.1 – 10.97.157.25410.97.157.255
3110.97.158.0/2410.97.158.1 – 10.97.158.25410.97.158.255
3210.97.159.0/2410.97.159.1 – 10.97.159.25410.97.159.255
3310.97.160.0/2410.97.160.1 – 10.97.160.25410.97.160.255
3410.97.161.0/2410.97.161.1 – 10.97.161.25410.97.161.255
3510.97.162.0/2410.97.162.1 – 10.97.162.25410.97.162.255
3610.97.163.0/2410.97.163.1 – 10.97.163.25410.97.163.255
3710.97.164.0/2410.97.164.1 – 10.97.164.25410.97.164.255
3810.97.165.0/2410.97.165.1 – 10.97.165.25410.97.165.255
3910.97.166.0/2410.97.166.1 – 10.97.166.25410.97.166.255
4010.97.167.0/2410.97.167.1 – 10.97.167.25410.97.167.255
4110.97.168.0/2410.97.168.1 – 10.97.168.25410.97.168.255
4210.97.169.0/2410.97.169.1 – 10.97.169.25410.97.169.255
4310.97.170.0/2410.97.170.1 – 10.97.170.25410.97.170.255
4410.97.171.0/2410.97.171.1 – 10.97.171.25410.97.171.255
4510.97.172.0/2410.97.172.1 – 10.97.172.25410.97.172.255
4610.97.173.0/2410.97.173.1 – 10.97.173.25410.97.173.255
4710.97.174.0/2410.97.174.1 – 10.97.174.25410.97.174.255
4810.97.175.0/2410.97.175.1 – 10.97.175.25410.97.175.255
4910.97.176.0/2410.97.176.1 – 10.97.176.25410.97.176.255
5010.97.177.0/2410.97.177.1 – 10.97.177.25410.97.177.255
5110.97.178.0/2410.97.178.1 – 10.97.178.25410.97.178.255
5210.97.179.0/2410.97.179.1 – 10.97.179.25410.97.179.255
5310.97.180.0/2410.97.180.1 – 10.97.180.25410.97.180.255
5410.97.181.0/2410.97.181.1 – 10.97.181.25410.97.181.255
5510.97.182.0/2410.97.182.1 – 10.97.182.25410.97.182.255
5610.97.183.0/2410.97.183.1 – 10.97.183.25410.97.183.255
5710.97.184.0/2410.97.184.1 – 10.97.184.25410.97.184.255
5810.97.185.0/2410.97.185.1 – 10.97.185.25410.97.185.255
5910.97.186.0/2410.97.186.1 – 10.97.186.25410.97.186.255
6010.97.187.0/2410.97.187.1 – 10.97.187.25410.97.187.255
6110.97.188.0/2410.97.188.1 – 10.97.188.25410.97.188.255
6210.97.189.0/2410.97.189.1 – 10.97.189.25410.97.189.255
6310.97.190.0/2410.97.190.1 – 10.97.190.25410.97.190.255
6410.97.191.0/2410.97.191.1 – 10.97.191.25410.97.191.255
6510.97.192.0/2410.97.192.1 – 10.97.192.25410.97.192.255
6610.97.193.0/2410.97.193.1 – 10.97.193.25410.97.193.255
6710.97.194.0/2410.97.194.1 – 10.97.194.25410.97.194.255
6810.97.195.0/2410.97.195.1 – 10.97.195.25410.97.195.255
6910.97.196.0/2410.97.196.1 – 10.97.196.25410.97.196.255
7010.97.197.0/2410.97.197.1 – 10.97.197.25410.97.197.255
7110.97.198.0/2410.97.198.1 – 10.97.198.25410.97.198.255
7210.97.199.0/2410.97.199.1 – 10.97.199.25410.97.199.255
7310.97.200.0/2410.97.200.1 – 10.97.200.25410.97.200.255
7410.97.201.0/2410.97.201.1 – 10.97.201.25410.97.201.255
7510.97.202.0/2410.97.202.1 – 10.97.202.25410.97.202.255
7610.97.203.0/2410.97.203.1 – 10.97.203.25410.97.203.255
7710.97.204.0/2410.97.204.1 – 10.97.204.25410.97.204.255
7810.97.205.0/2410.97.205.1 – 10.97.205.25410.97.205.255
7910.97.206.0/2410.97.206.1 – 10.97.206.25410.97.206.255
8010.97.207.0/2410.97.207.1 – 10.97.207.25410.97.207.255
8110.97.208.0/2410.97.208.1 – 10.97.208.25410.97.208.255
8210.97.209.0/2410.97.209.1 – 10.97.209.25410.97.209.255
8310.97.210.0/2410.97.210.1 – 10.97.210.25410.97.210.255
8410.97.211.0/2410.97.211.1 – 10.97.211.25410.97.211.255
8510.97.212.0/2410.97.212.1 – 10.97.212.25410.97.212.255
8610.97.213.0/2410.97.213.1 – 10.97.213.25410.97.213.255
8710.97.214.0/2410.97.214.1 – 10.97.214.25410.97.214.255
8810.97.215.0/2410.97.215.1 – 10.97.215.25410.97.215.255
8910.97.216.0/2410.97.216.1 – 10.97.216.25410.97.216.255
9010.97.217.0/2410.97.217.1 – 10.97.217.25410.97.217.255
9110.97.218.0/2410.97.218.1 – 10.97.218.25410.97.218.255
9210.97.219.0/2410.97.219.1 – 10.97.219.25410.97.219.255
9310.97.220.0/2410.97.220.1 – 10.97.220.25410.97.220.255
9410.97.221.0/2410.97.221.1 – 10.97.221.25410.97.221.255
9510.97.222.0/2410.97.222.1 – 10.97.222.25410.97.222.255
9610.97.223.0/2410.97.223.1 – 10.97.223.25410.97.223.255
9710.97.224.0/2410.97.224.1 – 10.97.224.25410.97.224.255
9810.97.225.0/2410.97.225.1 – 10.97.225.25410.97.225.255
9910.97.226.0/2410.97.226.1 – 10.97.226.25410.97.226.255
10010.97.227.0/2410.97.227.1 – 10.97.227.25410.97.227.255
10110.97.228.0/2410.97.228.1 – 10.97.228.25410.97.228.255
10210.97.229.0/2410.97.229.1 – 10.97.229.25410.97.229.255
10310.97.230.0/2410.97.230.1 – 10.97.230.25410.97.230.255
10410.97.231.0/2410.97.231.1 – 10.97.231.25410.97.231.255
10510.97.232.0/2410.97.232.1 – 10.97.232.25410.97.232.255
10610.97.233.0/2410.97.233.1 – 10.97.233.25410.97.233.255
10710.97.234.0/2410.97.234.1 – 10.97.234.25410.97.234.255
10810.97.235.0/2410.97.235.1 – 10.97.235.25410.97.235.255
10910.97.236.0/2410.97.236.1 – 10.97.236.25410.97.236.255
11010.97.237.0/2410.97.237.1 – 10.97.237.25410.97.237.255
11110.97.238.0/2410.97.238.1 – 10.97.238.25410.97.238.255
11210.97.239.0/2410.97.239.1 – 10.97.239.25410.97.239.255
11310.97.240.0/2410.97.240.1 – 10.97.240.25410.97.240.255
11410.97.241.0/2410.97.241.1 – 10.97.241.25410.97.241.255
11510.97.242.0/2410.97.242.1 – 10.97.242.25410.97.242.255
11610.97.243.0/2410.97.243.1 – 10.97.243.25410.97.243.255
11710.97.244.0/2410.97.244.1 – 10.97.244.25410.97.244.255
11810.97.245.0/2410.97.245.1 – 10.97.245.25410.97.245.255
11910.97.246.0/2410.97.246.1 – 10.97.246.25410.97.246.255
12010.97.247.0/2410.97.247.1 – 10.97.247.25410.97.247.255
12110.97.248.0/2410.97.248.1 – 10.97.248.25410.97.248.255
12210.97.249.0/2410.97.249.1 – 10.97.249.25410.97.249.255
12310.97.250.0/2410.97.250.1 – 10.97.250.25410.97.250.255
12410.97.251.0/2410.97.251.1 – 10.97.251.25410.97.251.255
12510.97.252.0/2410.97.252.1 – 10.97.252.25410.97.252.255
12610.97.253.0/2410.97.253.1 – 10.97.253.25410.97.253.255
12710.97.254.0/2410.97.254.1 – 10.97.254.25410.97.254.255
12810.97.255.0/2410.97.255.1 – 10.97.255.25410.97.255.255
01 / table

IPv4 CIDR prefix table.

Click a prefix longer than your network to split it into subnets.

prefixsubnet maskaddresseshostsin your /17
/00.0.0.04,294,967,2964,294,967,294-
/1128.0.0.02,147,483,6482,147,483,646-
/2192.0.0.01,073,741,8241,073,741,822-
/3224.0.0.0536,870,912536,870,910-
/4240.0.0.0268,435,456268,435,454-
/5248.0.0.0134,217,728134,217,726-
/6252.0.0.067,108,86467,108,862-
/7254.0.0.033,554,43233,554,430-
/8255.0.0.016,777,21616,777,214-
/9255.128.0.08,388,6088,388,606-
/10255.192.0.04,194,3044,194,302-
/11255.224.0.02,097,1522,097,150-
/12255.240.0.01,048,5761,048,574-
/13255.248.0.0524,288524,286-
/14255.252.0.0262,144262,142-
/15255.254.0.0131,072131,070-
/16255.255.0.065,53665,534-
/17255.255.128.032,76832,7661
/18255.255.192.016,38416,3822 split →
/19255.255.224.08,1928,1904 split →
/20255.255.240.04,0964,0948 split →
/21255.255.248.02,0482,04616 split →
/22255.255.252.01,0241,02232 split →
/23255.255.254.051251064 split →
/24255.255.255.0256254128 split →
/25255.255.255.128128126256 split →
/26255.255.255.1926462512 split →
/27255.255.255.22432301,024 split →
/28255.255.255.24016142,048 split →
/29255.255.255.248864,096 split →
/30255.255.255.252428,192 split →
/31255.255.255.2542216,384 split →
/32255.255.255.2551132,768 split →
02 / faq

About this calculator.

How do I use this subnet calculator?

▼

Type an IP address followed by a prefix, like 192.168.1.10/24, or by a subnet mask, like 192.168.1.10 255.255.255.0. Without a prefix it uses /24. Click a row in the table to split the network into smaller subnets.

Why are usable hosts always 2 fewer?

▼

The first address in a subnet is the network address and the last is the broadcast address, so neither can go to a device. The exceptions are /31 (point-to-point links, RFC 3021) and /32 (a single address), which use every address.

Can I use it from a terminal?

▼

Yes. curl 'ipku.in/en/tools/ipv4-subnet-calculator?q=192.168.1.10/24' returns the result as plain text.

Learn how to work it out →