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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)10.32.60.0/26
network10.32.60.0/26
broadcast10.32.60.63
first host10.32.60.1
last host10.32.60.62
subnet mask255.255.255.192
wildcard0.0.0.63
addresses64
usable hosts62
classA
ipcalc 10.32.60.0/26
address00001010.00100000.00111100.00000000
subnet mask11111111.11111111.11111111.11000000
network00001010.00100000.00111100.00000000
broadcast00001010.00100000.00111100.00111111
green = network part, grey = host part
hex0x0a203c00
decimal169884672
reverse dns0.60.32.10.in-addr.arpa
ipv4-mapped::ffff:a20:3c00

/26 split into /32 · 64 subnets

close ×
#networkhost rangebroadcast
110.32.60.0/3210.32.60.0 – 10.32.60.010.32.60.0
210.32.60.1/3210.32.60.1 – 10.32.60.110.32.60.1
310.32.60.2/3210.32.60.2 – 10.32.60.210.32.60.2
410.32.60.3/3210.32.60.3 – 10.32.60.310.32.60.3
510.32.60.4/3210.32.60.4 – 10.32.60.410.32.60.4
610.32.60.5/3210.32.60.5 – 10.32.60.510.32.60.5
710.32.60.6/3210.32.60.6 – 10.32.60.610.32.60.6
810.32.60.7/3210.32.60.7 – 10.32.60.710.32.60.7
910.32.60.8/3210.32.60.8 – 10.32.60.810.32.60.8
1010.32.60.9/3210.32.60.9 – 10.32.60.910.32.60.9
1110.32.60.10/3210.32.60.10 – 10.32.60.1010.32.60.10
1210.32.60.11/3210.32.60.11 – 10.32.60.1110.32.60.11
1310.32.60.12/3210.32.60.12 – 10.32.60.1210.32.60.12
1410.32.60.13/3210.32.60.13 – 10.32.60.1310.32.60.13
1510.32.60.14/3210.32.60.14 – 10.32.60.1410.32.60.14
1610.32.60.15/3210.32.60.15 – 10.32.60.1510.32.60.15
1710.32.60.16/3210.32.60.16 – 10.32.60.1610.32.60.16
1810.32.60.17/3210.32.60.17 – 10.32.60.1710.32.60.17
1910.32.60.18/3210.32.60.18 – 10.32.60.1810.32.60.18
2010.32.60.19/3210.32.60.19 – 10.32.60.1910.32.60.19
2110.32.60.20/3210.32.60.20 – 10.32.60.2010.32.60.20
2210.32.60.21/3210.32.60.21 – 10.32.60.2110.32.60.21
2310.32.60.22/3210.32.60.22 – 10.32.60.2210.32.60.22
2410.32.60.23/3210.32.60.23 – 10.32.60.2310.32.60.23
2510.32.60.24/3210.32.60.24 – 10.32.60.2410.32.60.24
2610.32.60.25/3210.32.60.25 – 10.32.60.2510.32.60.25
2710.32.60.26/3210.32.60.26 – 10.32.60.2610.32.60.26
2810.32.60.27/3210.32.60.27 – 10.32.60.2710.32.60.27
2910.32.60.28/3210.32.60.28 – 10.32.60.2810.32.60.28
3010.32.60.29/3210.32.60.29 – 10.32.60.2910.32.60.29
3110.32.60.30/3210.32.60.30 – 10.32.60.3010.32.60.30
3210.32.60.31/3210.32.60.31 – 10.32.60.3110.32.60.31
3310.32.60.32/3210.32.60.32 – 10.32.60.3210.32.60.32
3410.32.60.33/3210.32.60.33 – 10.32.60.3310.32.60.33
3510.32.60.34/3210.32.60.34 – 10.32.60.3410.32.60.34
3610.32.60.35/3210.32.60.35 – 10.32.60.3510.32.60.35
3710.32.60.36/3210.32.60.36 – 10.32.60.3610.32.60.36
3810.32.60.37/3210.32.60.37 – 10.32.60.3710.32.60.37
3910.32.60.38/3210.32.60.38 – 10.32.60.3810.32.60.38
4010.32.60.39/3210.32.60.39 – 10.32.60.3910.32.60.39
4110.32.60.40/3210.32.60.40 – 10.32.60.4010.32.60.40
4210.32.60.41/3210.32.60.41 – 10.32.60.4110.32.60.41
4310.32.60.42/3210.32.60.42 – 10.32.60.4210.32.60.42
4410.32.60.43/3210.32.60.43 – 10.32.60.4310.32.60.43
4510.32.60.44/3210.32.60.44 – 10.32.60.4410.32.60.44
4610.32.60.45/3210.32.60.45 – 10.32.60.4510.32.60.45
4710.32.60.46/3210.32.60.46 – 10.32.60.4610.32.60.46
4810.32.60.47/3210.32.60.47 – 10.32.60.4710.32.60.47
4910.32.60.48/3210.32.60.48 – 10.32.60.4810.32.60.48
5010.32.60.49/3210.32.60.49 – 10.32.60.4910.32.60.49
5110.32.60.50/3210.32.60.50 – 10.32.60.5010.32.60.50
5210.32.60.51/3210.32.60.51 – 10.32.60.5110.32.60.51
5310.32.60.52/3210.32.60.52 – 10.32.60.5210.32.60.52
5410.32.60.53/3210.32.60.53 – 10.32.60.5310.32.60.53
5510.32.60.54/3210.32.60.54 – 10.32.60.5410.32.60.54
5610.32.60.55/3210.32.60.55 – 10.32.60.5510.32.60.55
5710.32.60.56/3210.32.60.56 – 10.32.60.5610.32.60.56
5810.32.60.57/3210.32.60.57 – 10.32.60.5710.32.60.57
5910.32.60.58/3210.32.60.58 – 10.32.60.5810.32.60.58
6010.32.60.59/3210.32.60.59 – 10.32.60.5910.32.60.59
6110.32.60.60/3210.32.60.60 – 10.32.60.6010.32.60.60
6210.32.60.61/3210.32.60.61 – 10.32.60.6110.32.60.61
6310.32.60.62/3210.32.60.62 – 10.32.60.6210.32.60.62
6410.32.60.63/3210.32.60.63 – 10.32.60.6310.32.60.63
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 →