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)10.58.128.0/17
network10.58.128.0/17
broadcast10.58.255.255
first host10.58.128.1
last host10.58.255.254
subnet mask255.255.128.0
wildcard0.0.127.255
addresses32,768
usable hosts32,766
classA
ipcalc 10.58.128.0/17
address00001010.00111010.10000000.00000000
subnet mask11111111.11111111.10000000.00000000
network00001010.00111010.10000000.00000000
broadcast00001010.00111010.11111111.11111111
green = network part, grey = host part
hex0x0a3a8000
decimal171606016
reverse dns0.128.58.10.in-addr.arpa
ipv4-mapped::ffff:a3a:8000

/17 split into /24 · 128 subnets

close ×
#networkhost rangebroadcast
110.58.128.0/2410.58.128.1 – 10.58.128.25410.58.128.255
210.58.129.0/2410.58.129.1 – 10.58.129.25410.58.129.255
310.58.130.0/2410.58.130.1 – 10.58.130.25410.58.130.255
410.58.131.0/2410.58.131.1 – 10.58.131.25410.58.131.255
510.58.132.0/2410.58.132.1 – 10.58.132.25410.58.132.255
610.58.133.0/2410.58.133.1 – 10.58.133.25410.58.133.255
710.58.134.0/2410.58.134.1 – 10.58.134.25410.58.134.255
810.58.135.0/2410.58.135.1 – 10.58.135.25410.58.135.255
910.58.136.0/2410.58.136.1 – 10.58.136.25410.58.136.255
1010.58.137.0/2410.58.137.1 – 10.58.137.25410.58.137.255
1110.58.138.0/2410.58.138.1 – 10.58.138.25410.58.138.255
1210.58.139.0/2410.58.139.1 – 10.58.139.25410.58.139.255
1310.58.140.0/2410.58.140.1 – 10.58.140.25410.58.140.255
1410.58.141.0/2410.58.141.1 – 10.58.141.25410.58.141.255
1510.58.142.0/2410.58.142.1 – 10.58.142.25410.58.142.255
1610.58.143.0/2410.58.143.1 – 10.58.143.25410.58.143.255
1710.58.144.0/2410.58.144.1 – 10.58.144.25410.58.144.255
1810.58.145.0/2410.58.145.1 – 10.58.145.25410.58.145.255
1910.58.146.0/2410.58.146.1 – 10.58.146.25410.58.146.255
2010.58.147.0/2410.58.147.1 – 10.58.147.25410.58.147.255
2110.58.148.0/2410.58.148.1 – 10.58.148.25410.58.148.255
2210.58.149.0/2410.58.149.1 – 10.58.149.25410.58.149.255
2310.58.150.0/2410.58.150.1 – 10.58.150.25410.58.150.255
2410.58.151.0/2410.58.151.1 – 10.58.151.25410.58.151.255
2510.58.152.0/2410.58.152.1 – 10.58.152.25410.58.152.255
2610.58.153.0/2410.58.153.1 – 10.58.153.25410.58.153.255
2710.58.154.0/2410.58.154.1 – 10.58.154.25410.58.154.255
2810.58.155.0/2410.58.155.1 – 10.58.155.25410.58.155.255
2910.58.156.0/2410.58.156.1 – 10.58.156.25410.58.156.255
3010.58.157.0/2410.58.157.1 – 10.58.157.25410.58.157.255
3110.58.158.0/2410.58.158.1 – 10.58.158.25410.58.158.255
3210.58.159.0/2410.58.159.1 – 10.58.159.25410.58.159.255
3310.58.160.0/2410.58.160.1 – 10.58.160.25410.58.160.255
3410.58.161.0/2410.58.161.1 – 10.58.161.25410.58.161.255
3510.58.162.0/2410.58.162.1 – 10.58.162.25410.58.162.255
3610.58.163.0/2410.58.163.1 – 10.58.163.25410.58.163.255
3710.58.164.0/2410.58.164.1 – 10.58.164.25410.58.164.255
3810.58.165.0/2410.58.165.1 – 10.58.165.25410.58.165.255
3910.58.166.0/2410.58.166.1 – 10.58.166.25410.58.166.255
4010.58.167.0/2410.58.167.1 – 10.58.167.25410.58.167.255
4110.58.168.0/2410.58.168.1 – 10.58.168.25410.58.168.255
4210.58.169.0/2410.58.169.1 – 10.58.169.25410.58.169.255
4310.58.170.0/2410.58.170.1 – 10.58.170.25410.58.170.255
4410.58.171.0/2410.58.171.1 – 10.58.171.25410.58.171.255
4510.58.172.0/2410.58.172.1 – 10.58.172.25410.58.172.255
4610.58.173.0/2410.58.173.1 – 10.58.173.25410.58.173.255
4710.58.174.0/2410.58.174.1 – 10.58.174.25410.58.174.255
4810.58.175.0/2410.58.175.1 – 10.58.175.25410.58.175.255
4910.58.176.0/2410.58.176.1 – 10.58.176.25410.58.176.255
5010.58.177.0/2410.58.177.1 – 10.58.177.25410.58.177.255
5110.58.178.0/2410.58.178.1 – 10.58.178.25410.58.178.255
5210.58.179.0/2410.58.179.1 – 10.58.179.25410.58.179.255
5310.58.180.0/2410.58.180.1 – 10.58.180.25410.58.180.255
5410.58.181.0/2410.58.181.1 – 10.58.181.25410.58.181.255
5510.58.182.0/2410.58.182.1 – 10.58.182.25410.58.182.255
5610.58.183.0/2410.58.183.1 – 10.58.183.25410.58.183.255
5710.58.184.0/2410.58.184.1 – 10.58.184.25410.58.184.255
5810.58.185.0/2410.58.185.1 – 10.58.185.25410.58.185.255
5910.58.186.0/2410.58.186.1 – 10.58.186.25410.58.186.255
6010.58.187.0/2410.58.187.1 – 10.58.187.25410.58.187.255
6110.58.188.0/2410.58.188.1 – 10.58.188.25410.58.188.255
6210.58.189.0/2410.58.189.1 – 10.58.189.25410.58.189.255
6310.58.190.0/2410.58.190.1 – 10.58.190.25410.58.190.255
6410.58.191.0/2410.58.191.1 – 10.58.191.25410.58.191.255
6510.58.192.0/2410.58.192.1 – 10.58.192.25410.58.192.255
6610.58.193.0/2410.58.193.1 – 10.58.193.25410.58.193.255
6710.58.194.0/2410.58.194.1 – 10.58.194.25410.58.194.255
6810.58.195.0/2410.58.195.1 – 10.58.195.25410.58.195.255
6910.58.196.0/2410.58.196.1 – 10.58.196.25410.58.196.255
7010.58.197.0/2410.58.197.1 – 10.58.197.25410.58.197.255
7110.58.198.0/2410.58.198.1 – 10.58.198.25410.58.198.255
7210.58.199.0/2410.58.199.1 – 10.58.199.25410.58.199.255
7310.58.200.0/2410.58.200.1 – 10.58.200.25410.58.200.255
7410.58.201.0/2410.58.201.1 – 10.58.201.25410.58.201.255
7510.58.202.0/2410.58.202.1 – 10.58.202.25410.58.202.255
7610.58.203.0/2410.58.203.1 – 10.58.203.25410.58.203.255
7710.58.204.0/2410.58.204.1 – 10.58.204.25410.58.204.255
7810.58.205.0/2410.58.205.1 – 10.58.205.25410.58.205.255
7910.58.206.0/2410.58.206.1 – 10.58.206.25410.58.206.255
8010.58.207.0/2410.58.207.1 – 10.58.207.25410.58.207.255
8110.58.208.0/2410.58.208.1 – 10.58.208.25410.58.208.255
8210.58.209.0/2410.58.209.1 – 10.58.209.25410.58.209.255
8310.58.210.0/2410.58.210.1 – 10.58.210.25410.58.210.255
8410.58.211.0/2410.58.211.1 – 10.58.211.25410.58.211.255
8510.58.212.0/2410.58.212.1 – 10.58.212.25410.58.212.255
8610.58.213.0/2410.58.213.1 – 10.58.213.25410.58.213.255
8710.58.214.0/2410.58.214.1 – 10.58.214.25410.58.214.255
8810.58.215.0/2410.58.215.1 – 10.58.215.25410.58.215.255
8910.58.216.0/2410.58.216.1 – 10.58.216.25410.58.216.255
9010.58.217.0/2410.58.217.1 – 10.58.217.25410.58.217.255
9110.58.218.0/2410.58.218.1 – 10.58.218.25410.58.218.255
9210.58.219.0/2410.58.219.1 – 10.58.219.25410.58.219.255
9310.58.220.0/2410.58.220.1 – 10.58.220.25410.58.220.255
9410.58.221.0/2410.58.221.1 – 10.58.221.25410.58.221.255
9510.58.222.0/2410.58.222.1 – 10.58.222.25410.58.222.255
9610.58.223.0/2410.58.223.1 – 10.58.223.25410.58.223.255
9710.58.224.0/2410.58.224.1 – 10.58.224.25410.58.224.255
9810.58.225.0/2410.58.225.1 – 10.58.225.25410.58.225.255
9910.58.226.0/2410.58.226.1 – 10.58.226.25410.58.226.255
10010.58.227.0/2410.58.227.1 – 10.58.227.25410.58.227.255
10110.58.228.0/2410.58.228.1 – 10.58.228.25410.58.228.255
10210.58.229.0/2410.58.229.1 – 10.58.229.25410.58.229.255
10310.58.230.0/2410.58.230.1 – 10.58.230.25410.58.230.255
10410.58.231.0/2410.58.231.1 – 10.58.231.25410.58.231.255
10510.58.232.0/2410.58.232.1 – 10.58.232.25410.58.232.255
10610.58.233.0/2410.58.233.1 – 10.58.233.25410.58.233.255
10710.58.234.0/2410.58.234.1 – 10.58.234.25410.58.234.255
10810.58.235.0/2410.58.235.1 – 10.58.235.25410.58.235.255
10910.58.236.0/2410.58.236.1 – 10.58.236.25410.58.236.255
11010.58.237.0/2410.58.237.1 – 10.58.237.25410.58.237.255
11110.58.238.0/2410.58.238.1 – 10.58.238.25410.58.238.255
11210.58.239.0/2410.58.239.1 – 10.58.239.25410.58.239.255
11310.58.240.0/2410.58.240.1 – 10.58.240.25410.58.240.255
11410.58.241.0/2410.58.241.1 – 10.58.241.25410.58.241.255
11510.58.242.0/2410.58.242.1 – 10.58.242.25410.58.242.255
11610.58.243.0/2410.58.243.1 – 10.58.243.25410.58.243.255
11710.58.244.0/2410.58.244.1 – 10.58.244.25410.58.244.255
11810.58.245.0/2410.58.245.1 – 10.58.245.25410.58.245.255
11910.58.246.0/2410.58.246.1 – 10.58.246.25410.58.246.255
12010.58.247.0/2410.58.247.1 – 10.58.247.25410.58.247.255
12110.58.248.0/2410.58.248.1 – 10.58.248.25410.58.248.255
12210.58.249.0/2410.58.249.1 – 10.58.249.25410.58.249.255
12310.58.250.0/2410.58.250.1 – 10.58.250.25410.58.250.255
12410.58.251.0/2410.58.251.1 – 10.58.251.25410.58.251.255
12510.58.252.0/2410.58.252.1 – 10.58.252.25410.58.252.255
12610.58.253.0/2410.58.253.1 – 10.58.253.25410.58.253.255
12710.58.254.0/2410.58.254.1 – 10.58.254.25410.58.254.255
12810.58.255.0/2410.58.255.1 – 10.58.255.25410.58.255.255
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 →