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)10.84.128.0/17
network10.84.128.0/17
broadcast10.84.255.255
first host10.84.128.1
last host10.84.255.254
subnet mask255.255.128.0
wildcard0.0.127.255
addresses32,768
usable hosts32,766
classA
ipcalc 10.84.128.0/17
address00001010.01010100.10000000.00000000
subnet mask11111111.11111111.10000000.00000000
network00001010.01010100.10000000.00000000
broadcast00001010.01010100.11111111.11111111
green = network part, grey = host part
hex0x0a548000
decimal173309952
reverse dns0.128.84.10.in-addr.arpa
ipv4-mapped::ffff:a54:8000

/17 split into /24 · 128 subnets

close ×
#networkhost rangebroadcast
110.84.128.0/2410.84.128.1 – 10.84.128.25410.84.128.255
210.84.129.0/2410.84.129.1 – 10.84.129.25410.84.129.255
310.84.130.0/2410.84.130.1 – 10.84.130.25410.84.130.255
410.84.131.0/2410.84.131.1 – 10.84.131.25410.84.131.255
510.84.132.0/2410.84.132.1 – 10.84.132.25410.84.132.255
610.84.133.0/2410.84.133.1 – 10.84.133.25410.84.133.255
710.84.134.0/2410.84.134.1 – 10.84.134.25410.84.134.255
810.84.135.0/2410.84.135.1 – 10.84.135.25410.84.135.255
910.84.136.0/2410.84.136.1 – 10.84.136.25410.84.136.255
1010.84.137.0/2410.84.137.1 – 10.84.137.25410.84.137.255
1110.84.138.0/2410.84.138.1 – 10.84.138.25410.84.138.255
1210.84.139.0/2410.84.139.1 – 10.84.139.25410.84.139.255
1310.84.140.0/2410.84.140.1 – 10.84.140.25410.84.140.255
1410.84.141.0/2410.84.141.1 – 10.84.141.25410.84.141.255
1510.84.142.0/2410.84.142.1 – 10.84.142.25410.84.142.255
1610.84.143.0/2410.84.143.1 – 10.84.143.25410.84.143.255
1710.84.144.0/2410.84.144.1 – 10.84.144.25410.84.144.255
1810.84.145.0/2410.84.145.1 – 10.84.145.25410.84.145.255
1910.84.146.0/2410.84.146.1 – 10.84.146.25410.84.146.255
2010.84.147.0/2410.84.147.1 – 10.84.147.25410.84.147.255
2110.84.148.0/2410.84.148.1 – 10.84.148.25410.84.148.255
2210.84.149.0/2410.84.149.1 – 10.84.149.25410.84.149.255
2310.84.150.0/2410.84.150.1 – 10.84.150.25410.84.150.255
2410.84.151.0/2410.84.151.1 – 10.84.151.25410.84.151.255
2510.84.152.0/2410.84.152.1 – 10.84.152.25410.84.152.255
2610.84.153.0/2410.84.153.1 – 10.84.153.25410.84.153.255
2710.84.154.0/2410.84.154.1 – 10.84.154.25410.84.154.255
2810.84.155.0/2410.84.155.1 – 10.84.155.25410.84.155.255
2910.84.156.0/2410.84.156.1 – 10.84.156.25410.84.156.255
3010.84.157.0/2410.84.157.1 – 10.84.157.25410.84.157.255
3110.84.158.0/2410.84.158.1 – 10.84.158.25410.84.158.255
3210.84.159.0/2410.84.159.1 – 10.84.159.25410.84.159.255
3310.84.160.0/2410.84.160.1 – 10.84.160.25410.84.160.255
3410.84.161.0/2410.84.161.1 – 10.84.161.25410.84.161.255
3510.84.162.0/2410.84.162.1 – 10.84.162.25410.84.162.255
3610.84.163.0/2410.84.163.1 – 10.84.163.25410.84.163.255
3710.84.164.0/2410.84.164.1 – 10.84.164.25410.84.164.255
3810.84.165.0/2410.84.165.1 – 10.84.165.25410.84.165.255
3910.84.166.0/2410.84.166.1 – 10.84.166.25410.84.166.255
4010.84.167.0/2410.84.167.1 – 10.84.167.25410.84.167.255
4110.84.168.0/2410.84.168.1 – 10.84.168.25410.84.168.255
4210.84.169.0/2410.84.169.1 – 10.84.169.25410.84.169.255
4310.84.170.0/2410.84.170.1 – 10.84.170.25410.84.170.255
4410.84.171.0/2410.84.171.1 – 10.84.171.25410.84.171.255
4510.84.172.0/2410.84.172.1 – 10.84.172.25410.84.172.255
4610.84.173.0/2410.84.173.1 – 10.84.173.25410.84.173.255
4710.84.174.0/2410.84.174.1 – 10.84.174.25410.84.174.255
4810.84.175.0/2410.84.175.1 – 10.84.175.25410.84.175.255
4910.84.176.0/2410.84.176.1 – 10.84.176.25410.84.176.255
5010.84.177.0/2410.84.177.1 – 10.84.177.25410.84.177.255
5110.84.178.0/2410.84.178.1 – 10.84.178.25410.84.178.255
5210.84.179.0/2410.84.179.1 – 10.84.179.25410.84.179.255
5310.84.180.0/2410.84.180.1 – 10.84.180.25410.84.180.255
5410.84.181.0/2410.84.181.1 – 10.84.181.25410.84.181.255
5510.84.182.0/2410.84.182.1 – 10.84.182.25410.84.182.255
5610.84.183.0/2410.84.183.1 – 10.84.183.25410.84.183.255
5710.84.184.0/2410.84.184.1 – 10.84.184.25410.84.184.255
5810.84.185.0/2410.84.185.1 – 10.84.185.25410.84.185.255
5910.84.186.0/2410.84.186.1 – 10.84.186.25410.84.186.255
6010.84.187.0/2410.84.187.1 – 10.84.187.25410.84.187.255
6110.84.188.0/2410.84.188.1 – 10.84.188.25410.84.188.255
6210.84.189.0/2410.84.189.1 – 10.84.189.25410.84.189.255
6310.84.190.0/2410.84.190.1 – 10.84.190.25410.84.190.255
6410.84.191.0/2410.84.191.1 – 10.84.191.25410.84.191.255
6510.84.192.0/2410.84.192.1 – 10.84.192.25410.84.192.255
6610.84.193.0/2410.84.193.1 – 10.84.193.25410.84.193.255
6710.84.194.0/2410.84.194.1 – 10.84.194.25410.84.194.255
6810.84.195.0/2410.84.195.1 – 10.84.195.25410.84.195.255
6910.84.196.0/2410.84.196.1 – 10.84.196.25410.84.196.255
7010.84.197.0/2410.84.197.1 – 10.84.197.25410.84.197.255
7110.84.198.0/2410.84.198.1 – 10.84.198.25410.84.198.255
7210.84.199.0/2410.84.199.1 – 10.84.199.25410.84.199.255
7310.84.200.0/2410.84.200.1 – 10.84.200.25410.84.200.255
7410.84.201.0/2410.84.201.1 – 10.84.201.25410.84.201.255
7510.84.202.0/2410.84.202.1 – 10.84.202.25410.84.202.255
7610.84.203.0/2410.84.203.1 – 10.84.203.25410.84.203.255
7710.84.204.0/2410.84.204.1 – 10.84.204.25410.84.204.255
7810.84.205.0/2410.84.205.1 – 10.84.205.25410.84.205.255
7910.84.206.0/2410.84.206.1 – 10.84.206.25410.84.206.255
8010.84.207.0/2410.84.207.1 – 10.84.207.25410.84.207.255
8110.84.208.0/2410.84.208.1 – 10.84.208.25410.84.208.255
8210.84.209.0/2410.84.209.1 – 10.84.209.25410.84.209.255
8310.84.210.0/2410.84.210.1 – 10.84.210.25410.84.210.255
8410.84.211.0/2410.84.211.1 – 10.84.211.25410.84.211.255
8510.84.212.0/2410.84.212.1 – 10.84.212.25410.84.212.255
8610.84.213.0/2410.84.213.1 – 10.84.213.25410.84.213.255
8710.84.214.0/2410.84.214.1 – 10.84.214.25410.84.214.255
8810.84.215.0/2410.84.215.1 – 10.84.215.25410.84.215.255
8910.84.216.0/2410.84.216.1 – 10.84.216.25410.84.216.255
9010.84.217.0/2410.84.217.1 – 10.84.217.25410.84.217.255
9110.84.218.0/2410.84.218.1 – 10.84.218.25410.84.218.255
9210.84.219.0/2410.84.219.1 – 10.84.219.25410.84.219.255
9310.84.220.0/2410.84.220.1 – 10.84.220.25410.84.220.255
9410.84.221.0/2410.84.221.1 – 10.84.221.25410.84.221.255
9510.84.222.0/2410.84.222.1 – 10.84.222.25410.84.222.255
9610.84.223.0/2410.84.223.1 – 10.84.223.25410.84.223.255
9710.84.224.0/2410.84.224.1 – 10.84.224.25410.84.224.255
9810.84.225.0/2410.84.225.1 – 10.84.225.25410.84.225.255
9910.84.226.0/2410.84.226.1 – 10.84.226.25410.84.226.255
10010.84.227.0/2410.84.227.1 – 10.84.227.25410.84.227.255
10110.84.228.0/2410.84.228.1 – 10.84.228.25410.84.228.255
10210.84.229.0/2410.84.229.1 – 10.84.229.25410.84.229.255
10310.84.230.0/2410.84.230.1 – 10.84.230.25410.84.230.255
10410.84.231.0/2410.84.231.1 – 10.84.231.25410.84.231.255
10510.84.232.0/2410.84.232.1 – 10.84.232.25410.84.232.255
10610.84.233.0/2410.84.233.1 – 10.84.233.25410.84.233.255
10710.84.234.0/2410.84.234.1 – 10.84.234.25410.84.234.255
10810.84.235.0/2410.84.235.1 – 10.84.235.25410.84.235.255
10910.84.236.0/2410.84.236.1 – 10.84.236.25410.84.236.255
11010.84.237.0/2410.84.237.1 – 10.84.237.25410.84.237.255
11110.84.238.0/2410.84.238.1 – 10.84.238.25410.84.238.255
11210.84.239.0/2410.84.239.1 – 10.84.239.25410.84.239.255
11310.84.240.0/2410.84.240.1 – 10.84.240.25410.84.240.255
11410.84.241.0/2410.84.241.1 – 10.84.241.25410.84.241.255
11510.84.242.0/2410.84.242.1 – 10.84.242.25410.84.242.255
11610.84.243.0/2410.84.243.1 – 10.84.243.25410.84.243.255
11710.84.244.0/2410.84.244.1 – 10.84.244.25410.84.244.255
11810.84.245.0/2410.84.245.1 – 10.84.245.25410.84.245.255
11910.84.246.0/2410.84.246.1 – 10.84.246.25410.84.246.255
12010.84.247.0/2410.84.247.1 – 10.84.247.25410.84.247.255
12110.84.248.0/2410.84.248.1 – 10.84.248.25410.84.248.255
12210.84.249.0/2410.84.249.1 – 10.84.249.25410.84.249.255
12310.84.250.0/2410.84.250.1 – 10.84.250.25410.84.250.255
12410.84.251.0/2410.84.251.1 – 10.84.251.25410.84.251.255
12510.84.252.0/2410.84.252.1 – 10.84.252.25410.84.252.255
12610.84.253.0/2410.84.253.1 – 10.84.253.25410.84.253.255
12710.84.254.0/2410.84.254.1 – 10.84.254.25410.84.254.255
12810.84.255.0/2410.84.255.1 – 10.84.255.25410.84.255.255
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 →