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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)10.5.83.0/26
network10.5.83.0/26
broadcast10.5.83.63
first host10.5.83.1
last host10.5.83.62
subnet mask255.255.255.192
wildcard0.0.0.63
addresses64
usable hosts62
classA
ipcalc 10.5.83.0/26
address00001010.00000101.01010011.00000000
subnet mask11111111.11111111.11111111.11000000
network00001010.00000101.01010011.00000000
broadcast00001010.00000101.01010011.00111111
green = network part, grey = host part
hex0x0a055300
decimal168121088
reverse dns0.83.5.10.in-addr.arpa
ipv4-mapped::ffff:a05:5300

/26 split into /32 · 64 subnets

close ×
#networkhost rangebroadcast
110.5.83.0/3210.5.83.0 – 10.5.83.010.5.83.0
210.5.83.1/3210.5.83.1 – 10.5.83.110.5.83.1
310.5.83.2/3210.5.83.2 – 10.5.83.210.5.83.2
410.5.83.3/3210.5.83.3 – 10.5.83.310.5.83.3
510.5.83.4/3210.5.83.4 – 10.5.83.410.5.83.4
610.5.83.5/3210.5.83.5 – 10.5.83.510.5.83.5
710.5.83.6/3210.5.83.6 – 10.5.83.610.5.83.6
810.5.83.7/3210.5.83.7 – 10.5.83.710.5.83.7
910.5.83.8/3210.5.83.8 – 10.5.83.810.5.83.8
1010.5.83.9/3210.5.83.9 – 10.5.83.910.5.83.9
1110.5.83.10/3210.5.83.10 – 10.5.83.1010.5.83.10
1210.5.83.11/3210.5.83.11 – 10.5.83.1110.5.83.11
1310.5.83.12/3210.5.83.12 – 10.5.83.1210.5.83.12
1410.5.83.13/3210.5.83.13 – 10.5.83.1310.5.83.13
1510.5.83.14/3210.5.83.14 – 10.5.83.1410.5.83.14
1610.5.83.15/3210.5.83.15 – 10.5.83.1510.5.83.15
1710.5.83.16/3210.5.83.16 – 10.5.83.1610.5.83.16
1810.5.83.17/3210.5.83.17 – 10.5.83.1710.5.83.17
1910.5.83.18/3210.5.83.18 – 10.5.83.1810.5.83.18
2010.5.83.19/3210.5.83.19 – 10.5.83.1910.5.83.19
2110.5.83.20/3210.5.83.20 – 10.5.83.2010.5.83.20
2210.5.83.21/3210.5.83.21 – 10.5.83.2110.5.83.21
2310.5.83.22/3210.5.83.22 – 10.5.83.2210.5.83.22
2410.5.83.23/3210.5.83.23 – 10.5.83.2310.5.83.23
2510.5.83.24/3210.5.83.24 – 10.5.83.2410.5.83.24
2610.5.83.25/3210.5.83.25 – 10.5.83.2510.5.83.25
2710.5.83.26/3210.5.83.26 – 10.5.83.2610.5.83.26
2810.5.83.27/3210.5.83.27 – 10.5.83.2710.5.83.27
2910.5.83.28/3210.5.83.28 – 10.5.83.2810.5.83.28
3010.5.83.29/3210.5.83.29 – 10.5.83.2910.5.83.29
3110.5.83.30/3210.5.83.30 – 10.5.83.3010.5.83.30
3210.5.83.31/3210.5.83.31 – 10.5.83.3110.5.83.31
3310.5.83.32/3210.5.83.32 – 10.5.83.3210.5.83.32
3410.5.83.33/3210.5.83.33 – 10.5.83.3310.5.83.33
3510.5.83.34/3210.5.83.34 – 10.5.83.3410.5.83.34
3610.5.83.35/3210.5.83.35 – 10.5.83.3510.5.83.35
3710.5.83.36/3210.5.83.36 – 10.5.83.3610.5.83.36
3810.5.83.37/3210.5.83.37 – 10.5.83.3710.5.83.37
3910.5.83.38/3210.5.83.38 – 10.5.83.3810.5.83.38
4010.5.83.39/3210.5.83.39 – 10.5.83.3910.5.83.39
4110.5.83.40/3210.5.83.40 – 10.5.83.4010.5.83.40
4210.5.83.41/3210.5.83.41 – 10.5.83.4110.5.83.41
4310.5.83.42/3210.5.83.42 – 10.5.83.4210.5.83.42
4410.5.83.43/3210.5.83.43 – 10.5.83.4310.5.83.43
4510.5.83.44/3210.5.83.44 – 10.5.83.4410.5.83.44
4610.5.83.45/3210.5.83.45 – 10.5.83.4510.5.83.45
4710.5.83.46/3210.5.83.46 – 10.5.83.4610.5.83.46
4810.5.83.47/3210.5.83.47 – 10.5.83.4710.5.83.47
4910.5.83.48/3210.5.83.48 – 10.5.83.4810.5.83.48
5010.5.83.49/3210.5.83.49 – 10.5.83.4910.5.83.49
5110.5.83.50/3210.5.83.50 – 10.5.83.5010.5.83.50
5210.5.83.51/3210.5.83.51 – 10.5.83.5110.5.83.51
5310.5.83.52/3210.5.83.52 – 10.5.83.5210.5.83.52
5410.5.83.53/3210.5.83.53 – 10.5.83.5310.5.83.53
5510.5.83.54/3210.5.83.54 – 10.5.83.5410.5.83.54
5610.5.83.55/3210.5.83.55 – 10.5.83.5510.5.83.55
5710.5.83.56/3210.5.83.56 – 10.5.83.5610.5.83.56
5810.5.83.57/3210.5.83.57 – 10.5.83.5710.5.83.57
5910.5.83.58/3210.5.83.58 – 10.5.83.5810.5.83.58
6010.5.83.59/3210.5.83.59 – 10.5.83.5910.5.83.59
6110.5.83.60/3210.5.83.60 – 10.5.83.6010.5.83.60
6210.5.83.61/3210.5.83.61 – 10.5.83.6110.5.83.61
6310.5.83.62/3210.5.83.62 – 10.5.83.6210.5.83.62
6410.5.83.63/3210.5.83.63 – 10.5.83.6310.5.83.63
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 →