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)10.22.0.0/26
network10.22.0.0/26
broadcast10.22.0.63
first host10.22.0.1
last host10.22.0.62
subnet mask255.255.255.192
wildcard0.0.0.63
addresses64
usable hosts62
classA
ipcalc 10.22.0.0/26
address00001010.00010110.00000000.00000000
subnet mask11111111.11111111.11111111.11000000
network00001010.00010110.00000000.00000000
broadcast00001010.00010110.00000000.00111111
green = network part, grey = host part
hex0x0a160000
decimal169213952
reverse dns0.0.22.10.in-addr.arpa
ipv4-mapped::ffff:a16:0

/26 split into /32 · 64 subnets

close ×
#networkhost rangebroadcast
110.22.0.0/3210.22.0.0 – 10.22.0.010.22.0.0
210.22.0.1/3210.22.0.1 – 10.22.0.110.22.0.1
310.22.0.2/3210.22.0.2 – 10.22.0.210.22.0.2
410.22.0.3/3210.22.0.3 – 10.22.0.310.22.0.3
510.22.0.4/3210.22.0.4 – 10.22.0.410.22.0.4
610.22.0.5/3210.22.0.5 – 10.22.0.510.22.0.5
710.22.0.6/3210.22.0.6 – 10.22.0.610.22.0.6
810.22.0.7/3210.22.0.7 – 10.22.0.710.22.0.7
910.22.0.8/3210.22.0.8 – 10.22.0.810.22.0.8
1010.22.0.9/3210.22.0.9 – 10.22.0.910.22.0.9
1110.22.0.10/3210.22.0.10 – 10.22.0.1010.22.0.10
1210.22.0.11/3210.22.0.11 – 10.22.0.1110.22.0.11
1310.22.0.12/3210.22.0.12 – 10.22.0.1210.22.0.12
1410.22.0.13/3210.22.0.13 – 10.22.0.1310.22.0.13
1510.22.0.14/3210.22.0.14 – 10.22.0.1410.22.0.14
1610.22.0.15/3210.22.0.15 – 10.22.0.1510.22.0.15
1710.22.0.16/3210.22.0.16 – 10.22.0.1610.22.0.16
1810.22.0.17/3210.22.0.17 – 10.22.0.1710.22.0.17
1910.22.0.18/3210.22.0.18 – 10.22.0.1810.22.0.18
2010.22.0.19/3210.22.0.19 – 10.22.0.1910.22.0.19
2110.22.0.20/3210.22.0.20 – 10.22.0.2010.22.0.20
2210.22.0.21/3210.22.0.21 – 10.22.0.2110.22.0.21
2310.22.0.22/3210.22.0.22 – 10.22.0.2210.22.0.22
2410.22.0.23/3210.22.0.23 – 10.22.0.2310.22.0.23
2510.22.0.24/3210.22.0.24 – 10.22.0.2410.22.0.24
2610.22.0.25/3210.22.0.25 – 10.22.0.2510.22.0.25
2710.22.0.26/3210.22.0.26 – 10.22.0.2610.22.0.26
2810.22.0.27/3210.22.0.27 – 10.22.0.2710.22.0.27
2910.22.0.28/3210.22.0.28 – 10.22.0.2810.22.0.28
3010.22.0.29/3210.22.0.29 – 10.22.0.2910.22.0.29
3110.22.0.30/3210.22.0.30 – 10.22.0.3010.22.0.30
3210.22.0.31/3210.22.0.31 – 10.22.0.3110.22.0.31
3310.22.0.32/3210.22.0.32 – 10.22.0.3210.22.0.32
3410.22.0.33/3210.22.0.33 – 10.22.0.3310.22.0.33
3510.22.0.34/3210.22.0.34 – 10.22.0.3410.22.0.34
3610.22.0.35/3210.22.0.35 – 10.22.0.3510.22.0.35
3710.22.0.36/3210.22.0.36 – 10.22.0.3610.22.0.36
3810.22.0.37/3210.22.0.37 – 10.22.0.3710.22.0.37
3910.22.0.38/3210.22.0.38 – 10.22.0.3810.22.0.38
4010.22.0.39/3210.22.0.39 – 10.22.0.3910.22.0.39
4110.22.0.40/3210.22.0.40 – 10.22.0.4010.22.0.40
4210.22.0.41/3210.22.0.41 – 10.22.0.4110.22.0.41
4310.22.0.42/3210.22.0.42 – 10.22.0.4210.22.0.42
4410.22.0.43/3210.22.0.43 – 10.22.0.4310.22.0.43
4510.22.0.44/3210.22.0.44 – 10.22.0.4410.22.0.44
4610.22.0.45/3210.22.0.45 – 10.22.0.4510.22.0.45
4710.22.0.46/3210.22.0.46 – 10.22.0.4610.22.0.46
4810.22.0.47/3210.22.0.47 – 10.22.0.4710.22.0.47
4910.22.0.48/3210.22.0.48 – 10.22.0.4810.22.0.48
5010.22.0.49/3210.22.0.49 – 10.22.0.4910.22.0.49
5110.22.0.50/3210.22.0.50 – 10.22.0.5010.22.0.50
5210.22.0.51/3210.22.0.51 – 10.22.0.5110.22.0.51
5310.22.0.52/3210.22.0.52 – 10.22.0.5210.22.0.52
5410.22.0.53/3210.22.0.53 – 10.22.0.5310.22.0.53
5510.22.0.54/3210.22.0.54 – 10.22.0.5410.22.0.54
5610.22.0.55/3210.22.0.55 – 10.22.0.5510.22.0.55
5710.22.0.56/3210.22.0.56 – 10.22.0.5610.22.0.56
5810.22.0.57/3210.22.0.57 – 10.22.0.5710.22.0.57
5910.22.0.58/3210.22.0.58 – 10.22.0.5810.22.0.58
6010.22.0.59/3210.22.0.59 – 10.22.0.5910.22.0.59
6110.22.0.60/3210.22.0.60 – 10.22.0.6010.22.0.60
6210.22.0.61/3210.22.0.61 – 10.22.0.6110.22.0.61
6310.22.0.62/3210.22.0.62 – 10.22.0.6210.22.0.62
6410.22.0.63/3210.22.0.63 – 10.22.0.6310.22.0.63
01 / table

IPv4 CIDR prefix table.

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

prefixsubnet maskaddresseshostsin your /26
/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-
/17255.255.128.032,76832,766-
/18255.255.192.016,38416,382-
/19255.255.224.08,1928,190-
/20255.255.240.04,0964,094-
/21255.255.248.02,0482,046-
/22255.255.252.01,0241,022-
/23255.255.254.0512510-
/24255.255.255.0256254-
/25255.255.255.128128126-
/26255.255.255.19264621
/27255.255.255.22432302 split →
/28255.255.255.24016144 split →
/29255.255.255.248868 split →
/30255.255.255.2524216 split →
/31255.255.255.2542232 split →
/32255.255.255.2551164 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 →