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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)10.46.0.0/16
network10.46.0.0/16
broadcast10.46.255.255
first host10.46.0.1
last host10.46.255.254
subnet mask255.255.0.0
wildcard0.0.255.255
addresses65,536
usable hosts65,534
classA
ipcalc 10.46.0.0/16
address00001010.00101110.00000000.00000000
subnet mask11111111.11111111.00000000.00000000
network00001010.00101110.00000000.00000000
broadcast00001010.00101110.11111111.11111111
green = network part, grey = host part
hex0x0a2e0000
decimal170786816
reverse dns0.0.46.10.in-addr.arpa
ipv4-mapped::ffff:a2e:0

/16 split into /22 · 64 subnets

close ×
#networkhost rangebroadcast
110.46.0.0/2210.46.0.1 – 10.46.3.25410.46.3.255
210.46.4.0/2210.46.4.1 – 10.46.7.25410.46.7.255
310.46.8.0/2210.46.8.1 – 10.46.11.25410.46.11.255
410.46.12.0/2210.46.12.1 – 10.46.15.25410.46.15.255
510.46.16.0/2210.46.16.1 – 10.46.19.25410.46.19.255
610.46.20.0/2210.46.20.1 – 10.46.23.25410.46.23.255
710.46.24.0/2210.46.24.1 – 10.46.27.25410.46.27.255
810.46.28.0/2210.46.28.1 – 10.46.31.25410.46.31.255
910.46.32.0/2210.46.32.1 – 10.46.35.25410.46.35.255
1010.46.36.0/2210.46.36.1 – 10.46.39.25410.46.39.255
1110.46.40.0/2210.46.40.1 – 10.46.43.25410.46.43.255
1210.46.44.0/2210.46.44.1 – 10.46.47.25410.46.47.255
1310.46.48.0/2210.46.48.1 – 10.46.51.25410.46.51.255
1410.46.52.0/2210.46.52.1 – 10.46.55.25410.46.55.255
1510.46.56.0/2210.46.56.1 – 10.46.59.25410.46.59.255
1610.46.60.0/2210.46.60.1 – 10.46.63.25410.46.63.255
1710.46.64.0/2210.46.64.1 – 10.46.67.25410.46.67.255
1810.46.68.0/2210.46.68.1 – 10.46.71.25410.46.71.255
1910.46.72.0/2210.46.72.1 – 10.46.75.25410.46.75.255
2010.46.76.0/2210.46.76.1 – 10.46.79.25410.46.79.255
2110.46.80.0/2210.46.80.1 – 10.46.83.25410.46.83.255
2210.46.84.0/2210.46.84.1 – 10.46.87.25410.46.87.255
2310.46.88.0/2210.46.88.1 – 10.46.91.25410.46.91.255
2410.46.92.0/2210.46.92.1 – 10.46.95.25410.46.95.255
2510.46.96.0/2210.46.96.1 – 10.46.99.25410.46.99.255
2610.46.100.0/2210.46.100.1 – 10.46.103.25410.46.103.255
2710.46.104.0/2210.46.104.1 – 10.46.107.25410.46.107.255
2810.46.108.0/2210.46.108.1 – 10.46.111.25410.46.111.255
2910.46.112.0/2210.46.112.1 – 10.46.115.25410.46.115.255
3010.46.116.0/2210.46.116.1 – 10.46.119.25410.46.119.255
3110.46.120.0/2210.46.120.1 – 10.46.123.25410.46.123.255
3210.46.124.0/2210.46.124.1 – 10.46.127.25410.46.127.255
3310.46.128.0/2210.46.128.1 – 10.46.131.25410.46.131.255
3410.46.132.0/2210.46.132.1 – 10.46.135.25410.46.135.255
3510.46.136.0/2210.46.136.1 – 10.46.139.25410.46.139.255
3610.46.140.0/2210.46.140.1 – 10.46.143.25410.46.143.255
3710.46.144.0/2210.46.144.1 – 10.46.147.25410.46.147.255
3810.46.148.0/2210.46.148.1 – 10.46.151.25410.46.151.255
3910.46.152.0/2210.46.152.1 – 10.46.155.25410.46.155.255
4010.46.156.0/2210.46.156.1 – 10.46.159.25410.46.159.255
4110.46.160.0/2210.46.160.1 – 10.46.163.25410.46.163.255
4210.46.164.0/2210.46.164.1 – 10.46.167.25410.46.167.255
4310.46.168.0/2210.46.168.1 – 10.46.171.25410.46.171.255
4410.46.172.0/2210.46.172.1 – 10.46.175.25410.46.175.255
4510.46.176.0/2210.46.176.1 – 10.46.179.25410.46.179.255
4610.46.180.0/2210.46.180.1 – 10.46.183.25410.46.183.255
4710.46.184.0/2210.46.184.1 – 10.46.187.25410.46.187.255
4810.46.188.0/2210.46.188.1 – 10.46.191.25410.46.191.255
4910.46.192.0/2210.46.192.1 – 10.46.195.25410.46.195.255
5010.46.196.0/2210.46.196.1 – 10.46.199.25410.46.199.255
5110.46.200.0/2210.46.200.1 – 10.46.203.25410.46.203.255
5210.46.204.0/2210.46.204.1 – 10.46.207.25410.46.207.255
5310.46.208.0/2210.46.208.1 – 10.46.211.25410.46.211.255
5410.46.212.0/2210.46.212.1 – 10.46.215.25410.46.215.255
5510.46.216.0/2210.46.216.1 – 10.46.219.25410.46.219.255
5610.46.220.0/2210.46.220.1 – 10.46.223.25410.46.223.255
5710.46.224.0/2210.46.224.1 – 10.46.227.25410.46.227.255
5810.46.228.0/2210.46.228.1 – 10.46.231.25410.46.231.255
5910.46.232.0/2210.46.232.1 – 10.46.235.25410.46.235.255
6010.46.236.0/2210.46.236.1 – 10.46.239.25410.46.239.255
6110.46.240.0/2210.46.240.1 – 10.46.243.25410.46.243.255
6210.46.244.0/2210.46.244.1 – 10.46.247.25410.46.247.255
6310.46.248.0/2210.46.248.1 – 10.46.251.25410.46.251.255
6410.46.252.0/2210.46.252.1 – 10.46.255.25410.46.255.255
01 / table

IPv4 CIDR prefix table.

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

prefixsubnet maskaddresseshostsin your /16
/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-
/16255.255.0.065,53665,5341
/17255.255.128.032,76832,7662 split →
/18255.255.192.016,38416,3824 split →
/19255.255.224.08,1928,1908 split →
/20255.255.240.04,0964,09416 split →
/21255.255.248.02,0482,04632 split →
/22255.255.252.01,0241,02264 split →
/23255.255.254.0512510128 split →
/24255.255.255.0256254256 split →
/25255.255.255.128128126512 split →
/26255.255.255.19264621,024 split →
/27255.255.255.22432302,048 split →
/28255.255.255.24016144,096 split →
/29255.255.255.248868,192 split →
/30255.255.255.2524216,384 split →
/31255.255.255.2542232,768 split →
/32255.255.255.2551165,536 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 →