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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)10.111.167.0/26
network10.111.167.0/26
broadcast10.111.167.63
first host10.111.167.1
last host10.111.167.62
subnet mask255.255.255.192
wildcard0.0.0.63
addresses64
usable hosts62
classA
ipcalc 10.111.167.0/26
address00001010.01101111.10100111.00000000
subnet mask11111111.11111111.11111111.11000000
network00001010.01101111.10100111.00000000
broadcast00001010.01101111.10100111.00111111
green = network part, grey = host part
hex0x0a6fa700
decimal175089408
reverse dns0.167.111.10.in-addr.arpa
ipv4-mapped::ffff:a6f:a700

/26 split into /32 · 64 subnets

close ×
#networkhost rangebroadcast
110.111.167.0/3210.111.167.0 – 10.111.167.010.111.167.0
210.111.167.1/3210.111.167.1 – 10.111.167.110.111.167.1
310.111.167.2/3210.111.167.2 – 10.111.167.210.111.167.2
410.111.167.3/3210.111.167.3 – 10.111.167.310.111.167.3
510.111.167.4/3210.111.167.4 – 10.111.167.410.111.167.4
610.111.167.5/3210.111.167.5 – 10.111.167.510.111.167.5
710.111.167.6/3210.111.167.6 – 10.111.167.610.111.167.6
810.111.167.7/3210.111.167.7 – 10.111.167.710.111.167.7
910.111.167.8/3210.111.167.8 – 10.111.167.810.111.167.8
1010.111.167.9/3210.111.167.9 – 10.111.167.910.111.167.9
1110.111.167.10/3210.111.167.10 – 10.111.167.1010.111.167.10
1210.111.167.11/3210.111.167.11 – 10.111.167.1110.111.167.11
1310.111.167.12/3210.111.167.12 – 10.111.167.1210.111.167.12
1410.111.167.13/3210.111.167.13 – 10.111.167.1310.111.167.13
1510.111.167.14/3210.111.167.14 – 10.111.167.1410.111.167.14
1610.111.167.15/3210.111.167.15 – 10.111.167.1510.111.167.15
1710.111.167.16/3210.111.167.16 – 10.111.167.1610.111.167.16
1810.111.167.17/3210.111.167.17 – 10.111.167.1710.111.167.17
1910.111.167.18/3210.111.167.18 – 10.111.167.1810.111.167.18
2010.111.167.19/3210.111.167.19 – 10.111.167.1910.111.167.19
2110.111.167.20/3210.111.167.20 – 10.111.167.2010.111.167.20
2210.111.167.21/3210.111.167.21 – 10.111.167.2110.111.167.21
2310.111.167.22/3210.111.167.22 – 10.111.167.2210.111.167.22
2410.111.167.23/3210.111.167.23 – 10.111.167.2310.111.167.23
2510.111.167.24/3210.111.167.24 – 10.111.167.2410.111.167.24
2610.111.167.25/3210.111.167.25 – 10.111.167.2510.111.167.25
2710.111.167.26/3210.111.167.26 – 10.111.167.2610.111.167.26
2810.111.167.27/3210.111.167.27 – 10.111.167.2710.111.167.27
2910.111.167.28/3210.111.167.28 – 10.111.167.2810.111.167.28
3010.111.167.29/3210.111.167.29 – 10.111.167.2910.111.167.29
3110.111.167.30/3210.111.167.30 – 10.111.167.3010.111.167.30
3210.111.167.31/3210.111.167.31 – 10.111.167.3110.111.167.31
3310.111.167.32/3210.111.167.32 – 10.111.167.3210.111.167.32
3410.111.167.33/3210.111.167.33 – 10.111.167.3310.111.167.33
3510.111.167.34/3210.111.167.34 – 10.111.167.3410.111.167.34
3610.111.167.35/3210.111.167.35 – 10.111.167.3510.111.167.35
3710.111.167.36/3210.111.167.36 – 10.111.167.3610.111.167.36
3810.111.167.37/3210.111.167.37 – 10.111.167.3710.111.167.37
3910.111.167.38/3210.111.167.38 – 10.111.167.3810.111.167.38
4010.111.167.39/3210.111.167.39 – 10.111.167.3910.111.167.39
4110.111.167.40/3210.111.167.40 – 10.111.167.4010.111.167.40
4210.111.167.41/3210.111.167.41 – 10.111.167.4110.111.167.41
4310.111.167.42/3210.111.167.42 – 10.111.167.4210.111.167.42
4410.111.167.43/3210.111.167.43 – 10.111.167.4310.111.167.43
4510.111.167.44/3210.111.167.44 – 10.111.167.4410.111.167.44
4610.111.167.45/3210.111.167.45 – 10.111.167.4510.111.167.45
4710.111.167.46/3210.111.167.46 – 10.111.167.4610.111.167.46
4810.111.167.47/3210.111.167.47 – 10.111.167.4710.111.167.47
4910.111.167.48/3210.111.167.48 – 10.111.167.4810.111.167.48
5010.111.167.49/3210.111.167.49 – 10.111.167.4910.111.167.49
5110.111.167.50/3210.111.167.50 – 10.111.167.5010.111.167.50
5210.111.167.51/3210.111.167.51 – 10.111.167.5110.111.167.51
5310.111.167.52/3210.111.167.52 – 10.111.167.5210.111.167.52
5410.111.167.53/3210.111.167.53 – 10.111.167.5310.111.167.53
5510.111.167.54/3210.111.167.54 – 10.111.167.5410.111.167.54
5610.111.167.55/3210.111.167.55 – 10.111.167.5510.111.167.55
5710.111.167.56/3210.111.167.56 – 10.111.167.5610.111.167.56
5810.111.167.57/3210.111.167.57 – 10.111.167.5710.111.167.57
5910.111.167.58/3210.111.167.58 – 10.111.167.5810.111.167.58
6010.111.167.59/3210.111.167.59 – 10.111.167.5910.111.167.59
6110.111.167.60/3210.111.167.60 – 10.111.167.6010.111.167.60
6210.111.167.61/3210.111.167.61 – 10.111.167.6110.111.167.61
6310.111.167.62/3210.111.167.62 – 10.111.167.6210.111.167.62
6410.111.167.63/3210.111.167.63 – 10.111.167.6310.111.167.63
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 →