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)10.26.128.0/17
network10.26.128.0/17
broadcast10.26.255.255
first host10.26.128.1
last host10.26.255.254
subnet mask255.255.128.0
wildcard0.0.127.255
addresses32,768
usable hosts32,766
classA
ipcalc 10.26.128.0/17
address00001010.00011010.10000000.00000000
subnet mask11111111.11111111.10000000.00000000
network00001010.00011010.10000000.00000000
broadcast00001010.00011010.11111111.11111111
green = network part, grey = host part
hex0x0a1a8000
decimal169508864
reverse dns0.128.26.10.in-addr.arpa
ipv4-mapped::ffff:a1a:8000

/17 split into /24 · 128 subnets

close ×
#networkhost rangebroadcast
110.26.128.0/2410.26.128.1 – 10.26.128.25410.26.128.255
210.26.129.0/2410.26.129.1 – 10.26.129.25410.26.129.255
310.26.130.0/2410.26.130.1 – 10.26.130.25410.26.130.255
410.26.131.0/2410.26.131.1 – 10.26.131.25410.26.131.255
510.26.132.0/2410.26.132.1 – 10.26.132.25410.26.132.255
610.26.133.0/2410.26.133.1 – 10.26.133.25410.26.133.255
710.26.134.0/2410.26.134.1 – 10.26.134.25410.26.134.255
810.26.135.0/2410.26.135.1 – 10.26.135.25410.26.135.255
910.26.136.0/2410.26.136.1 – 10.26.136.25410.26.136.255
1010.26.137.0/2410.26.137.1 – 10.26.137.25410.26.137.255
1110.26.138.0/2410.26.138.1 – 10.26.138.25410.26.138.255
1210.26.139.0/2410.26.139.1 – 10.26.139.25410.26.139.255
1310.26.140.0/2410.26.140.1 – 10.26.140.25410.26.140.255
1410.26.141.0/2410.26.141.1 – 10.26.141.25410.26.141.255
1510.26.142.0/2410.26.142.1 – 10.26.142.25410.26.142.255
1610.26.143.0/2410.26.143.1 – 10.26.143.25410.26.143.255
1710.26.144.0/2410.26.144.1 – 10.26.144.25410.26.144.255
1810.26.145.0/2410.26.145.1 – 10.26.145.25410.26.145.255
1910.26.146.0/2410.26.146.1 – 10.26.146.25410.26.146.255
2010.26.147.0/2410.26.147.1 – 10.26.147.25410.26.147.255
2110.26.148.0/2410.26.148.1 – 10.26.148.25410.26.148.255
2210.26.149.0/2410.26.149.1 – 10.26.149.25410.26.149.255
2310.26.150.0/2410.26.150.1 – 10.26.150.25410.26.150.255
2410.26.151.0/2410.26.151.1 – 10.26.151.25410.26.151.255
2510.26.152.0/2410.26.152.1 – 10.26.152.25410.26.152.255
2610.26.153.0/2410.26.153.1 – 10.26.153.25410.26.153.255
2710.26.154.0/2410.26.154.1 – 10.26.154.25410.26.154.255
2810.26.155.0/2410.26.155.1 – 10.26.155.25410.26.155.255
2910.26.156.0/2410.26.156.1 – 10.26.156.25410.26.156.255
3010.26.157.0/2410.26.157.1 – 10.26.157.25410.26.157.255
3110.26.158.0/2410.26.158.1 – 10.26.158.25410.26.158.255
3210.26.159.0/2410.26.159.1 – 10.26.159.25410.26.159.255
3310.26.160.0/2410.26.160.1 – 10.26.160.25410.26.160.255
3410.26.161.0/2410.26.161.1 – 10.26.161.25410.26.161.255
3510.26.162.0/2410.26.162.1 – 10.26.162.25410.26.162.255
3610.26.163.0/2410.26.163.1 – 10.26.163.25410.26.163.255
3710.26.164.0/2410.26.164.1 – 10.26.164.25410.26.164.255
3810.26.165.0/2410.26.165.1 – 10.26.165.25410.26.165.255
3910.26.166.0/2410.26.166.1 – 10.26.166.25410.26.166.255
4010.26.167.0/2410.26.167.1 – 10.26.167.25410.26.167.255
4110.26.168.0/2410.26.168.1 – 10.26.168.25410.26.168.255
4210.26.169.0/2410.26.169.1 – 10.26.169.25410.26.169.255
4310.26.170.0/2410.26.170.1 – 10.26.170.25410.26.170.255
4410.26.171.0/2410.26.171.1 – 10.26.171.25410.26.171.255
4510.26.172.0/2410.26.172.1 – 10.26.172.25410.26.172.255
4610.26.173.0/2410.26.173.1 – 10.26.173.25410.26.173.255
4710.26.174.0/2410.26.174.1 – 10.26.174.25410.26.174.255
4810.26.175.0/2410.26.175.1 – 10.26.175.25410.26.175.255
4910.26.176.0/2410.26.176.1 – 10.26.176.25410.26.176.255
5010.26.177.0/2410.26.177.1 – 10.26.177.25410.26.177.255
5110.26.178.0/2410.26.178.1 – 10.26.178.25410.26.178.255
5210.26.179.0/2410.26.179.1 – 10.26.179.25410.26.179.255
5310.26.180.0/2410.26.180.1 – 10.26.180.25410.26.180.255
5410.26.181.0/2410.26.181.1 – 10.26.181.25410.26.181.255
5510.26.182.0/2410.26.182.1 – 10.26.182.25410.26.182.255
5610.26.183.0/2410.26.183.1 – 10.26.183.25410.26.183.255
5710.26.184.0/2410.26.184.1 – 10.26.184.25410.26.184.255
5810.26.185.0/2410.26.185.1 – 10.26.185.25410.26.185.255
5910.26.186.0/2410.26.186.1 – 10.26.186.25410.26.186.255
6010.26.187.0/2410.26.187.1 – 10.26.187.25410.26.187.255
6110.26.188.0/2410.26.188.1 – 10.26.188.25410.26.188.255
6210.26.189.0/2410.26.189.1 – 10.26.189.25410.26.189.255
6310.26.190.0/2410.26.190.1 – 10.26.190.25410.26.190.255
6410.26.191.0/2410.26.191.1 – 10.26.191.25410.26.191.255
6510.26.192.0/2410.26.192.1 – 10.26.192.25410.26.192.255
6610.26.193.0/2410.26.193.1 – 10.26.193.25410.26.193.255
6710.26.194.0/2410.26.194.1 – 10.26.194.25410.26.194.255
6810.26.195.0/2410.26.195.1 – 10.26.195.25410.26.195.255
6910.26.196.0/2410.26.196.1 – 10.26.196.25410.26.196.255
7010.26.197.0/2410.26.197.1 – 10.26.197.25410.26.197.255
7110.26.198.0/2410.26.198.1 – 10.26.198.25410.26.198.255
7210.26.199.0/2410.26.199.1 – 10.26.199.25410.26.199.255
7310.26.200.0/2410.26.200.1 – 10.26.200.25410.26.200.255
7410.26.201.0/2410.26.201.1 – 10.26.201.25410.26.201.255
7510.26.202.0/2410.26.202.1 – 10.26.202.25410.26.202.255
7610.26.203.0/2410.26.203.1 – 10.26.203.25410.26.203.255
7710.26.204.0/2410.26.204.1 – 10.26.204.25410.26.204.255
7810.26.205.0/2410.26.205.1 – 10.26.205.25410.26.205.255
7910.26.206.0/2410.26.206.1 – 10.26.206.25410.26.206.255
8010.26.207.0/2410.26.207.1 – 10.26.207.25410.26.207.255
8110.26.208.0/2410.26.208.1 – 10.26.208.25410.26.208.255
8210.26.209.0/2410.26.209.1 – 10.26.209.25410.26.209.255
8310.26.210.0/2410.26.210.1 – 10.26.210.25410.26.210.255
8410.26.211.0/2410.26.211.1 – 10.26.211.25410.26.211.255
8510.26.212.0/2410.26.212.1 – 10.26.212.25410.26.212.255
8610.26.213.0/2410.26.213.1 – 10.26.213.25410.26.213.255
8710.26.214.0/2410.26.214.1 – 10.26.214.25410.26.214.255
8810.26.215.0/2410.26.215.1 – 10.26.215.25410.26.215.255
8910.26.216.0/2410.26.216.1 – 10.26.216.25410.26.216.255
9010.26.217.0/2410.26.217.1 – 10.26.217.25410.26.217.255
9110.26.218.0/2410.26.218.1 – 10.26.218.25410.26.218.255
9210.26.219.0/2410.26.219.1 – 10.26.219.25410.26.219.255
9310.26.220.0/2410.26.220.1 – 10.26.220.25410.26.220.255
9410.26.221.0/2410.26.221.1 – 10.26.221.25410.26.221.255
9510.26.222.0/2410.26.222.1 – 10.26.222.25410.26.222.255
9610.26.223.0/2410.26.223.1 – 10.26.223.25410.26.223.255
9710.26.224.0/2410.26.224.1 – 10.26.224.25410.26.224.255
9810.26.225.0/2410.26.225.1 – 10.26.225.25410.26.225.255
9910.26.226.0/2410.26.226.1 – 10.26.226.25410.26.226.255
10010.26.227.0/2410.26.227.1 – 10.26.227.25410.26.227.255
10110.26.228.0/2410.26.228.1 – 10.26.228.25410.26.228.255
10210.26.229.0/2410.26.229.1 – 10.26.229.25410.26.229.255
10310.26.230.0/2410.26.230.1 – 10.26.230.25410.26.230.255
10410.26.231.0/2410.26.231.1 – 10.26.231.25410.26.231.255
10510.26.232.0/2410.26.232.1 – 10.26.232.25410.26.232.255
10610.26.233.0/2410.26.233.1 – 10.26.233.25410.26.233.255
10710.26.234.0/2410.26.234.1 – 10.26.234.25410.26.234.255
10810.26.235.0/2410.26.235.1 – 10.26.235.25410.26.235.255
10910.26.236.0/2410.26.236.1 – 10.26.236.25410.26.236.255
11010.26.237.0/2410.26.237.1 – 10.26.237.25410.26.237.255
11110.26.238.0/2410.26.238.1 – 10.26.238.25410.26.238.255
11210.26.239.0/2410.26.239.1 – 10.26.239.25410.26.239.255
11310.26.240.0/2410.26.240.1 – 10.26.240.25410.26.240.255
11410.26.241.0/2410.26.241.1 – 10.26.241.25410.26.241.255
11510.26.242.0/2410.26.242.1 – 10.26.242.25410.26.242.255
11610.26.243.0/2410.26.243.1 – 10.26.243.25410.26.243.255
11710.26.244.0/2410.26.244.1 – 10.26.244.25410.26.244.255
11810.26.245.0/2410.26.245.1 – 10.26.245.25410.26.245.255
11910.26.246.0/2410.26.246.1 – 10.26.246.25410.26.246.255
12010.26.247.0/2410.26.247.1 – 10.26.247.25410.26.247.255
12110.26.248.0/2410.26.248.1 – 10.26.248.25410.26.248.255
12210.26.249.0/2410.26.249.1 – 10.26.249.25410.26.249.255
12310.26.250.0/2410.26.250.1 – 10.26.250.25410.26.250.255
12410.26.251.0/2410.26.251.1 – 10.26.251.25410.26.251.255
12510.26.252.0/2410.26.252.1 – 10.26.252.25410.26.252.255
12610.26.253.0/2410.26.253.1 – 10.26.253.25410.26.253.255
12710.26.254.0/2410.26.254.1 – 10.26.254.25410.26.254.255
12810.26.255.0/2410.26.255.1 – 10.26.255.25410.26.255.255
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 →