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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)10.89.136.0/26
network10.89.136.0/26
broadcast10.89.136.63
first host10.89.136.1
last host10.89.136.62
subnet mask255.255.255.192
wildcard0.0.0.63
addresses64
usable hosts62
classA
ipcalc 10.89.136.0/26
address00001010.01011001.10001000.00000000
subnet mask11111111.11111111.11111111.11000000
network00001010.01011001.10001000.00000000
broadcast00001010.01011001.10001000.00111111
green = network part, grey = host part
hex0x0a598800
decimal173639680
reverse dns0.136.89.10.in-addr.arpa
ipv4-mapped::ffff:a59:8800

/26 split into /32 · 64 subnets

close ×
#networkhost rangebroadcast
110.89.136.0/3210.89.136.0 – 10.89.136.010.89.136.0
210.89.136.1/3210.89.136.1 – 10.89.136.110.89.136.1
310.89.136.2/3210.89.136.2 – 10.89.136.210.89.136.2
410.89.136.3/3210.89.136.3 – 10.89.136.310.89.136.3
510.89.136.4/3210.89.136.4 – 10.89.136.410.89.136.4
610.89.136.5/3210.89.136.5 – 10.89.136.510.89.136.5
710.89.136.6/3210.89.136.6 – 10.89.136.610.89.136.6
810.89.136.7/3210.89.136.7 – 10.89.136.710.89.136.7
910.89.136.8/3210.89.136.8 – 10.89.136.810.89.136.8
1010.89.136.9/3210.89.136.9 – 10.89.136.910.89.136.9
1110.89.136.10/3210.89.136.10 – 10.89.136.1010.89.136.10
1210.89.136.11/3210.89.136.11 – 10.89.136.1110.89.136.11
1310.89.136.12/3210.89.136.12 – 10.89.136.1210.89.136.12
1410.89.136.13/3210.89.136.13 – 10.89.136.1310.89.136.13
1510.89.136.14/3210.89.136.14 – 10.89.136.1410.89.136.14
1610.89.136.15/3210.89.136.15 – 10.89.136.1510.89.136.15
1710.89.136.16/3210.89.136.16 – 10.89.136.1610.89.136.16
1810.89.136.17/3210.89.136.17 – 10.89.136.1710.89.136.17
1910.89.136.18/3210.89.136.18 – 10.89.136.1810.89.136.18
2010.89.136.19/3210.89.136.19 – 10.89.136.1910.89.136.19
2110.89.136.20/3210.89.136.20 – 10.89.136.2010.89.136.20
2210.89.136.21/3210.89.136.21 – 10.89.136.2110.89.136.21
2310.89.136.22/3210.89.136.22 – 10.89.136.2210.89.136.22
2410.89.136.23/3210.89.136.23 – 10.89.136.2310.89.136.23
2510.89.136.24/3210.89.136.24 – 10.89.136.2410.89.136.24
2610.89.136.25/3210.89.136.25 – 10.89.136.2510.89.136.25
2710.89.136.26/3210.89.136.26 – 10.89.136.2610.89.136.26
2810.89.136.27/3210.89.136.27 – 10.89.136.2710.89.136.27
2910.89.136.28/3210.89.136.28 – 10.89.136.2810.89.136.28
3010.89.136.29/3210.89.136.29 – 10.89.136.2910.89.136.29
3110.89.136.30/3210.89.136.30 – 10.89.136.3010.89.136.30
3210.89.136.31/3210.89.136.31 – 10.89.136.3110.89.136.31
3310.89.136.32/3210.89.136.32 – 10.89.136.3210.89.136.32
3410.89.136.33/3210.89.136.33 – 10.89.136.3310.89.136.33
3510.89.136.34/3210.89.136.34 – 10.89.136.3410.89.136.34
3610.89.136.35/3210.89.136.35 – 10.89.136.3510.89.136.35
3710.89.136.36/3210.89.136.36 – 10.89.136.3610.89.136.36
3810.89.136.37/3210.89.136.37 – 10.89.136.3710.89.136.37
3910.89.136.38/3210.89.136.38 – 10.89.136.3810.89.136.38
4010.89.136.39/3210.89.136.39 – 10.89.136.3910.89.136.39
4110.89.136.40/3210.89.136.40 – 10.89.136.4010.89.136.40
4210.89.136.41/3210.89.136.41 – 10.89.136.4110.89.136.41
4310.89.136.42/3210.89.136.42 – 10.89.136.4210.89.136.42
4410.89.136.43/3210.89.136.43 – 10.89.136.4310.89.136.43
4510.89.136.44/3210.89.136.44 – 10.89.136.4410.89.136.44
4610.89.136.45/3210.89.136.45 – 10.89.136.4510.89.136.45
4710.89.136.46/3210.89.136.46 – 10.89.136.4610.89.136.46
4810.89.136.47/3210.89.136.47 – 10.89.136.4710.89.136.47
4910.89.136.48/3210.89.136.48 – 10.89.136.4810.89.136.48
5010.89.136.49/3210.89.136.49 – 10.89.136.4910.89.136.49
5110.89.136.50/3210.89.136.50 – 10.89.136.5010.89.136.50
5210.89.136.51/3210.89.136.51 – 10.89.136.5110.89.136.51
5310.89.136.52/3210.89.136.52 – 10.89.136.5210.89.136.52
5410.89.136.53/3210.89.136.53 – 10.89.136.5310.89.136.53
5510.89.136.54/3210.89.136.54 – 10.89.136.5410.89.136.54
5610.89.136.55/3210.89.136.55 – 10.89.136.5510.89.136.55
5710.89.136.56/3210.89.136.56 – 10.89.136.5610.89.136.56
5810.89.136.57/3210.89.136.57 – 10.89.136.5710.89.136.57
5910.89.136.58/3210.89.136.58 – 10.89.136.5810.89.136.58
6010.89.136.59/3210.89.136.59 – 10.89.136.5910.89.136.59
6110.89.136.60/3210.89.136.60 – 10.89.136.6010.89.136.60
6210.89.136.61/3210.89.136.61 – 10.89.136.6110.89.136.61
6310.89.136.62/3210.89.136.62 – 10.89.136.6210.89.136.62
6410.89.136.63/3210.89.136.63 – 10.89.136.6310.89.136.63
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 →