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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)10.131.154.0/26
network10.131.154.0/26
broadcast10.131.154.63
first host10.131.154.1
last host10.131.154.62
subnet mask255.255.255.192
wildcard0.0.0.63
addresses64
usable hosts62
classA
ipcalc 10.131.154.0/26
address00001010.10000011.10011010.00000000
subnet mask11111111.11111111.11111111.11000000
network00001010.10000011.10011010.00000000
broadcast00001010.10000011.10011010.00111111
green = network part, grey = host part
hex0x0a839a00
decimal176396800
reverse dns0.154.131.10.in-addr.arpa
ipv4-mapped::ffff:a83:9a00

/26 split into /32 · 64 subnets

close ×
#networkhost rangebroadcast
110.131.154.0/3210.131.154.0 – 10.131.154.010.131.154.0
210.131.154.1/3210.131.154.1 – 10.131.154.110.131.154.1
310.131.154.2/3210.131.154.2 – 10.131.154.210.131.154.2
410.131.154.3/3210.131.154.3 – 10.131.154.310.131.154.3
510.131.154.4/3210.131.154.4 – 10.131.154.410.131.154.4
610.131.154.5/3210.131.154.5 – 10.131.154.510.131.154.5
710.131.154.6/3210.131.154.6 – 10.131.154.610.131.154.6
810.131.154.7/3210.131.154.7 – 10.131.154.710.131.154.7
910.131.154.8/3210.131.154.8 – 10.131.154.810.131.154.8
1010.131.154.9/3210.131.154.9 – 10.131.154.910.131.154.9
1110.131.154.10/3210.131.154.10 – 10.131.154.1010.131.154.10
1210.131.154.11/3210.131.154.11 – 10.131.154.1110.131.154.11
1310.131.154.12/3210.131.154.12 – 10.131.154.1210.131.154.12
1410.131.154.13/3210.131.154.13 – 10.131.154.1310.131.154.13
1510.131.154.14/3210.131.154.14 – 10.131.154.1410.131.154.14
1610.131.154.15/3210.131.154.15 – 10.131.154.1510.131.154.15
1710.131.154.16/3210.131.154.16 – 10.131.154.1610.131.154.16
1810.131.154.17/3210.131.154.17 – 10.131.154.1710.131.154.17
1910.131.154.18/3210.131.154.18 – 10.131.154.1810.131.154.18
2010.131.154.19/3210.131.154.19 – 10.131.154.1910.131.154.19
2110.131.154.20/3210.131.154.20 – 10.131.154.2010.131.154.20
2210.131.154.21/3210.131.154.21 – 10.131.154.2110.131.154.21
2310.131.154.22/3210.131.154.22 – 10.131.154.2210.131.154.22
2410.131.154.23/3210.131.154.23 – 10.131.154.2310.131.154.23
2510.131.154.24/3210.131.154.24 – 10.131.154.2410.131.154.24
2610.131.154.25/3210.131.154.25 – 10.131.154.2510.131.154.25
2710.131.154.26/3210.131.154.26 – 10.131.154.2610.131.154.26
2810.131.154.27/3210.131.154.27 – 10.131.154.2710.131.154.27
2910.131.154.28/3210.131.154.28 – 10.131.154.2810.131.154.28
3010.131.154.29/3210.131.154.29 – 10.131.154.2910.131.154.29
3110.131.154.30/3210.131.154.30 – 10.131.154.3010.131.154.30
3210.131.154.31/3210.131.154.31 – 10.131.154.3110.131.154.31
3310.131.154.32/3210.131.154.32 – 10.131.154.3210.131.154.32
3410.131.154.33/3210.131.154.33 – 10.131.154.3310.131.154.33
3510.131.154.34/3210.131.154.34 – 10.131.154.3410.131.154.34
3610.131.154.35/3210.131.154.35 – 10.131.154.3510.131.154.35
3710.131.154.36/3210.131.154.36 – 10.131.154.3610.131.154.36
3810.131.154.37/3210.131.154.37 – 10.131.154.3710.131.154.37
3910.131.154.38/3210.131.154.38 – 10.131.154.3810.131.154.38
4010.131.154.39/3210.131.154.39 – 10.131.154.3910.131.154.39
4110.131.154.40/3210.131.154.40 – 10.131.154.4010.131.154.40
4210.131.154.41/3210.131.154.41 – 10.131.154.4110.131.154.41
4310.131.154.42/3210.131.154.42 – 10.131.154.4210.131.154.42
4410.131.154.43/3210.131.154.43 – 10.131.154.4310.131.154.43
4510.131.154.44/3210.131.154.44 – 10.131.154.4410.131.154.44
4610.131.154.45/3210.131.154.45 – 10.131.154.4510.131.154.45
4710.131.154.46/3210.131.154.46 – 10.131.154.4610.131.154.46
4810.131.154.47/3210.131.154.47 – 10.131.154.4710.131.154.47
4910.131.154.48/3210.131.154.48 – 10.131.154.4810.131.154.48
5010.131.154.49/3210.131.154.49 – 10.131.154.4910.131.154.49
5110.131.154.50/3210.131.154.50 – 10.131.154.5010.131.154.50
5210.131.154.51/3210.131.154.51 – 10.131.154.5110.131.154.51
5310.131.154.52/3210.131.154.52 – 10.131.154.5210.131.154.52
5410.131.154.53/3210.131.154.53 – 10.131.154.5310.131.154.53
5510.131.154.54/3210.131.154.54 – 10.131.154.5410.131.154.54
5610.131.154.55/3210.131.154.55 – 10.131.154.5510.131.154.55
5710.131.154.56/3210.131.154.56 – 10.131.154.5610.131.154.56
5810.131.154.57/3210.131.154.57 – 10.131.154.5710.131.154.57
5910.131.154.58/3210.131.154.58 – 10.131.154.5810.131.154.58
6010.131.154.59/3210.131.154.59 – 10.131.154.5910.131.154.59
6110.131.154.60/3210.131.154.60 – 10.131.154.6010.131.154.60
6210.131.154.61/3210.131.154.61 – 10.131.154.6110.131.154.61
6310.131.154.62/3210.131.154.62 – 10.131.154.6210.131.154.62
6410.131.154.63/3210.131.154.63 – 10.131.154.6310.131.154.63
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 →