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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)10.7.239.0/26
network10.7.239.0/26
broadcast10.7.239.63
first host10.7.239.1
last host10.7.239.62
subnet mask255.255.255.192
wildcard0.0.0.63
addresses64
usable hosts62
classA
ipcalc 10.7.239.0/26
address00001010.00000111.11101111.00000000
subnet mask11111111.11111111.11111111.11000000
network00001010.00000111.11101111.00000000
broadcast00001010.00000111.11101111.00111111
green = network part, grey = host part
hex0x0a07ef00
decimal168292096
reverse dns0.239.7.10.in-addr.arpa
ipv4-mapped::ffff:a07:ef00

/26 split into /32 · 64 subnets

close ×
#networkhost rangebroadcast
110.7.239.0/3210.7.239.0 – 10.7.239.010.7.239.0
210.7.239.1/3210.7.239.1 – 10.7.239.110.7.239.1
310.7.239.2/3210.7.239.2 – 10.7.239.210.7.239.2
410.7.239.3/3210.7.239.3 – 10.7.239.310.7.239.3
510.7.239.4/3210.7.239.4 – 10.7.239.410.7.239.4
610.7.239.5/3210.7.239.5 – 10.7.239.510.7.239.5
710.7.239.6/3210.7.239.6 – 10.7.239.610.7.239.6
810.7.239.7/3210.7.239.7 – 10.7.239.710.7.239.7
910.7.239.8/3210.7.239.8 – 10.7.239.810.7.239.8
1010.7.239.9/3210.7.239.9 – 10.7.239.910.7.239.9
1110.7.239.10/3210.7.239.10 – 10.7.239.1010.7.239.10
1210.7.239.11/3210.7.239.11 – 10.7.239.1110.7.239.11
1310.7.239.12/3210.7.239.12 – 10.7.239.1210.7.239.12
1410.7.239.13/3210.7.239.13 – 10.7.239.1310.7.239.13
1510.7.239.14/3210.7.239.14 – 10.7.239.1410.7.239.14
1610.7.239.15/3210.7.239.15 – 10.7.239.1510.7.239.15
1710.7.239.16/3210.7.239.16 – 10.7.239.1610.7.239.16
1810.7.239.17/3210.7.239.17 – 10.7.239.1710.7.239.17
1910.7.239.18/3210.7.239.18 – 10.7.239.1810.7.239.18
2010.7.239.19/3210.7.239.19 – 10.7.239.1910.7.239.19
2110.7.239.20/3210.7.239.20 – 10.7.239.2010.7.239.20
2210.7.239.21/3210.7.239.21 – 10.7.239.2110.7.239.21
2310.7.239.22/3210.7.239.22 – 10.7.239.2210.7.239.22
2410.7.239.23/3210.7.239.23 – 10.7.239.2310.7.239.23
2510.7.239.24/3210.7.239.24 – 10.7.239.2410.7.239.24
2610.7.239.25/3210.7.239.25 – 10.7.239.2510.7.239.25
2710.7.239.26/3210.7.239.26 – 10.7.239.2610.7.239.26
2810.7.239.27/3210.7.239.27 – 10.7.239.2710.7.239.27
2910.7.239.28/3210.7.239.28 – 10.7.239.2810.7.239.28
3010.7.239.29/3210.7.239.29 – 10.7.239.2910.7.239.29
3110.7.239.30/3210.7.239.30 – 10.7.239.3010.7.239.30
3210.7.239.31/3210.7.239.31 – 10.7.239.3110.7.239.31
3310.7.239.32/3210.7.239.32 – 10.7.239.3210.7.239.32
3410.7.239.33/3210.7.239.33 – 10.7.239.3310.7.239.33
3510.7.239.34/3210.7.239.34 – 10.7.239.3410.7.239.34
3610.7.239.35/3210.7.239.35 – 10.7.239.3510.7.239.35
3710.7.239.36/3210.7.239.36 – 10.7.239.3610.7.239.36
3810.7.239.37/3210.7.239.37 – 10.7.239.3710.7.239.37
3910.7.239.38/3210.7.239.38 – 10.7.239.3810.7.239.38
4010.7.239.39/3210.7.239.39 – 10.7.239.3910.7.239.39
4110.7.239.40/3210.7.239.40 – 10.7.239.4010.7.239.40
4210.7.239.41/3210.7.239.41 – 10.7.239.4110.7.239.41
4310.7.239.42/3210.7.239.42 – 10.7.239.4210.7.239.42
4410.7.239.43/3210.7.239.43 – 10.7.239.4310.7.239.43
4510.7.239.44/3210.7.239.44 – 10.7.239.4410.7.239.44
4610.7.239.45/3210.7.239.45 – 10.7.239.4510.7.239.45
4710.7.239.46/3210.7.239.46 – 10.7.239.4610.7.239.46
4810.7.239.47/3210.7.239.47 – 10.7.239.4710.7.239.47
4910.7.239.48/3210.7.239.48 – 10.7.239.4810.7.239.48
5010.7.239.49/3210.7.239.49 – 10.7.239.4910.7.239.49
5110.7.239.50/3210.7.239.50 – 10.7.239.5010.7.239.50
5210.7.239.51/3210.7.239.51 – 10.7.239.5110.7.239.51
5310.7.239.52/3210.7.239.52 – 10.7.239.5210.7.239.52
5410.7.239.53/3210.7.239.53 – 10.7.239.5310.7.239.53
5510.7.239.54/3210.7.239.54 – 10.7.239.5410.7.239.54
5610.7.239.55/3210.7.239.55 – 10.7.239.5510.7.239.55
5710.7.239.56/3210.7.239.56 – 10.7.239.5610.7.239.56
5810.7.239.57/3210.7.239.57 – 10.7.239.5710.7.239.57
5910.7.239.58/3210.7.239.58 – 10.7.239.5810.7.239.58
6010.7.239.59/3210.7.239.59 – 10.7.239.5910.7.239.59
6110.7.239.60/3210.7.239.60 – 10.7.239.6010.7.239.60
6210.7.239.61/3210.7.239.61 – 10.7.239.6110.7.239.61
6310.7.239.62/3210.7.239.62 – 10.7.239.6210.7.239.62
6410.7.239.63/3210.7.239.63 – 10.7.239.6310.7.239.63
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 →