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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)10.76.13.0/26
network10.76.13.0/26
broadcast10.76.13.63
first host10.76.13.1
last host10.76.13.62
subnet mask255.255.255.192
wildcard0.0.0.63
addresses64
usable hosts62
classA
ipcalc 10.76.13.0/26
address00001010.01001100.00001101.00000000
subnet mask11111111.11111111.11111111.11000000
network00001010.01001100.00001101.00000000
broadcast00001010.01001100.00001101.00111111
green = network part, grey = host part
hex0x0a4c0d00
decimal172756224
reverse dns0.13.76.10.in-addr.arpa
ipv4-mapped::ffff:a4c:d00

/26 split into /32 · 64 subnets

close ×
#networkhost rangebroadcast
110.76.13.0/3210.76.13.0 – 10.76.13.010.76.13.0
210.76.13.1/3210.76.13.1 – 10.76.13.110.76.13.1
310.76.13.2/3210.76.13.2 – 10.76.13.210.76.13.2
410.76.13.3/3210.76.13.3 – 10.76.13.310.76.13.3
510.76.13.4/3210.76.13.4 – 10.76.13.410.76.13.4
610.76.13.5/3210.76.13.5 – 10.76.13.510.76.13.5
710.76.13.6/3210.76.13.6 – 10.76.13.610.76.13.6
810.76.13.7/3210.76.13.7 – 10.76.13.710.76.13.7
910.76.13.8/3210.76.13.8 – 10.76.13.810.76.13.8
1010.76.13.9/3210.76.13.9 – 10.76.13.910.76.13.9
1110.76.13.10/3210.76.13.10 – 10.76.13.1010.76.13.10
1210.76.13.11/3210.76.13.11 – 10.76.13.1110.76.13.11
1310.76.13.12/3210.76.13.12 – 10.76.13.1210.76.13.12
1410.76.13.13/3210.76.13.13 – 10.76.13.1310.76.13.13
1510.76.13.14/3210.76.13.14 – 10.76.13.1410.76.13.14
1610.76.13.15/3210.76.13.15 – 10.76.13.1510.76.13.15
1710.76.13.16/3210.76.13.16 – 10.76.13.1610.76.13.16
1810.76.13.17/3210.76.13.17 – 10.76.13.1710.76.13.17
1910.76.13.18/3210.76.13.18 – 10.76.13.1810.76.13.18
2010.76.13.19/3210.76.13.19 – 10.76.13.1910.76.13.19
2110.76.13.20/3210.76.13.20 – 10.76.13.2010.76.13.20
2210.76.13.21/3210.76.13.21 – 10.76.13.2110.76.13.21
2310.76.13.22/3210.76.13.22 – 10.76.13.2210.76.13.22
2410.76.13.23/3210.76.13.23 – 10.76.13.2310.76.13.23
2510.76.13.24/3210.76.13.24 – 10.76.13.2410.76.13.24
2610.76.13.25/3210.76.13.25 – 10.76.13.2510.76.13.25
2710.76.13.26/3210.76.13.26 – 10.76.13.2610.76.13.26
2810.76.13.27/3210.76.13.27 – 10.76.13.2710.76.13.27
2910.76.13.28/3210.76.13.28 – 10.76.13.2810.76.13.28
3010.76.13.29/3210.76.13.29 – 10.76.13.2910.76.13.29
3110.76.13.30/3210.76.13.30 – 10.76.13.3010.76.13.30
3210.76.13.31/3210.76.13.31 – 10.76.13.3110.76.13.31
3310.76.13.32/3210.76.13.32 – 10.76.13.3210.76.13.32
3410.76.13.33/3210.76.13.33 – 10.76.13.3310.76.13.33
3510.76.13.34/3210.76.13.34 – 10.76.13.3410.76.13.34
3610.76.13.35/3210.76.13.35 – 10.76.13.3510.76.13.35
3710.76.13.36/3210.76.13.36 – 10.76.13.3610.76.13.36
3810.76.13.37/3210.76.13.37 – 10.76.13.3710.76.13.37
3910.76.13.38/3210.76.13.38 – 10.76.13.3810.76.13.38
4010.76.13.39/3210.76.13.39 – 10.76.13.3910.76.13.39
4110.76.13.40/3210.76.13.40 – 10.76.13.4010.76.13.40
4210.76.13.41/3210.76.13.41 – 10.76.13.4110.76.13.41
4310.76.13.42/3210.76.13.42 – 10.76.13.4210.76.13.42
4410.76.13.43/3210.76.13.43 – 10.76.13.4310.76.13.43
4510.76.13.44/3210.76.13.44 – 10.76.13.4410.76.13.44
4610.76.13.45/3210.76.13.45 – 10.76.13.4510.76.13.45
4710.76.13.46/3210.76.13.46 – 10.76.13.4610.76.13.46
4810.76.13.47/3210.76.13.47 – 10.76.13.4710.76.13.47
4910.76.13.48/3210.76.13.48 – 10.76.13.4810.76.13.48
5010.76.13.49/3210.76.13.49 – 10.76.13.4910.76.13.49
5110.76.13.50/3210.76.13.50 – 10.76.13.5010.76.13.50
5210.76.13.51/3210.76.13.51 – 10.76.13.5110.76.13.51
5310.76.13.52/3210.76.13.52 – 10.76.13.5210.76.13.52
5410.76.13.53/3210.76.13.53 – 10.76.13.5310.76.13.53
5510.76.13.54/3210.76.13.54 – 10.76.13.5410.76.13.54
5610.76.13.55/3210.76.13.55 – 10.76.13.5510.76.13.55
5710.76.13.56/3210.76.13.56 – 10.76.13.5610.76.13.56
5810.76.13.57/3210.76.13.57 – 10.76.13.5710.76.13.57
5910.76.13.58/3210.76.13.58 – 10.76.13.5810.76.13.58
6010.76.13.59/3210.76.13.59 – 10.76.13.5910.76.13.59
6110.76.13.60/3210.76.13.60 – 10.76.13.6010.76.13.60
6210.76.13.61/3210.76.13.61 – 10.76.13.6110.76.13.61
6310.76.13.62/3210.76.13.62 – 10.76.13.6210.76.13.62
6410.76.13.63/3210.76.13.63 – 10.76.13.6310.76.13.63
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 →