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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)10.75.53.0/26
network10.75.53.0/26
broadcast10.75.53.63
first host10.75.53.1
last host10.75.53.62
subnet mask255.255.255.192
wildcard0.0.0.63
addresses64
usable hosts62
classA
ipcalc 10.75.53.0/26
address00001010.01001011.00110101.00000000
subnet mask11111111.11111111.11111111.11000000
network00001010.01001011.00110101.00000000
broadcast00001010.01001011.00110101.00111111
green = network part, grey = host part
hex0x0a4b3500
decimal172700928
reverse dns0.53.75.10.in-addr.arpa
ipv4-mapped::ffff:a4b:3500

/26 split into /32 · 64 subnets

close ×
#networkhost rangebroadcast
110.75.53.0/3210.75.53.0 – 10.75.53.010.75.53.0
210.75.53.1/3210.75.53.1 – 10.75.53.110.75.53.1
310.75.53.2/3210.75.53.2 – 10.75.53.210.75.53.2
410.75.53.3/3210.75.53.3 – 10.75.53.310.75.53.3
510.75.53.4/3210.75.53.4 – 10.75.53.410.75.53.4
610.75.53.5/3210.75.53.5 – 10.75.53.510.75.53.5
710.75.53.6/3210.75.53.6 – 10.75.53.610.75.53.6
810.75.53.7/3210.75.53.7 – 10.75.53.710.75.53.7
910.75.53.8/3210.75.53.8 – 10.75.53.810.75.53.8
1010.75.53.9/3210.75.53.9 – 10.75.53.910.75.53.9
1110.75.53.10/3210.75.53.10 – 10.75.53.1010.75.53.10
1210.75.53.11/3210.75.53.11 – 10.75.53.1110.75.53.11
1310.75.53.12/3210.75.53.12 – 10.75.53.1210.75.53.12
1410.75.53.13/3210.75.53.13 – 10.75.53.1310.75.53.13
1510.75.53.14/3210.75.53.14 – 10.75.53.1410.75.53.14
1610.75.53.15/3210.75.53.15 – 10.75.53.1510.75.53.15
1710.75.53.16/3210.75.53.16 – 10.75.53.1610.75.53.16
1810.75.53.17/3210.75.53.17 – 10.75.53.1710.75.53.17
1910.75.53.18/3210.75.53.18 – 10.75.53.1810.75.53.18
2010.75.53.19/3210.75.53.19 – 10.75.53.1910.75.53.19
2110.75.53.20/3210.75.53.20 – 10.75.53.2010.75.53.20
2210.75.53.21/3210.75.53.21 – 10.75.53.2110.75.53.21
2310.75.53.22/3210.75.53.22 – 10.75.53.2210.75.53.22
2410.75.53.23/3210.75.53.23 – 10.75.53.2310.75.53.23
2510.75.53.24/3210.75.53.24 – 10.75.53.2410.75.53.24
2610.75.53.25/3210.75.53.25 – 10.75.53.2510.75.53.25
2710.75.53.26/3210.75.53.26 – 10.75.53.2610.75.53.26
2810.75.53.27/3210.75.53.27 – 10.75.53.2710.75.53.27
2910.75.53.28/3210.75.53.28 – 10.75.53.2810.75.53.28
3010.75.53.29/3210.75.53.29 – 10.75.53.2910.75.53.29
3110.75.53.30/3210.75.53.30 – 10.75.53.3010.75.53.30
3210.75.53.31/3210.75.53.31 – 10.75.53.3110.75.53.31
3310.75.53.32/3210.75.53.32 – 10.75.53.3210.75.53.32
3410.75.53.33/3210.75.53.33 – 10.75.53.3310.75.53.33
3510.75.53.34/3210.75.53.34 – 10.75.53.3410.75.53.34
3610.75.53.35/3210.75.53.35 – 10.75.53.3510.75.53.35
3710.75.53.36/3210.75.53.36 – 10.75.53.3610.75.53.36
3810.75.53.37/3210.75.53.37 – 10.75.53.3710.75.53.37
3910.75.53.38/3210.75.53.38 – 10.75.53.3810.75.53.38
4010.75.53.39/3210.75.53.39 – 10.75.53.3910.75.53.39
4110.75.53.40/3210.75.53.40 – 10.75.53.4010.75.53.40
4210.75.53.41/3210.75.53.41 – 10.75.53.4110.75.53.41
4310.75.53.42/3210.75.53.42 – 10.75.53.4210.75.53.42
4410.75.53.43/3210.75.53.43 – 10.75.53.4310.75.53.43
4510.75.53.44/3210.75.53.44 – 10.75.53.4410.75.53.44
4610.75.53.45/3210.75.53.45 – 10.75.53.4510.75.53.45
4710.75.53.46/3210.75.53.46 – 10.75.53.4610.75.53.46
4810.75.53.47/3210.75.53.47 – 10.75.53.4710.75.53.47
4910.75.53.48/3210.75.53.48 – 10.75.53.4810.75.53.48
5010.75.53.49/3210.75.53.49 – 10.75.53.4910.75.53.49
5110.75.53.50/3210.75.53.50 – 10.75.53.5010.75.53.50
5210.75.53.51/3210.75.53.51 – 10.75.53.5110.75.53.51
5310.75.53.52/3210.75.53.52 – 10.75.53.5210.75.53.52
5410.75.53.53/3210.75.53.53 – 10.75.53.5310.75.53.53
5510.75.53.54/3210.75.53.54 – 10.75.53.5410.75.53.54
5610.75.53.55/3210.75.53.55 – 10.75.53.5510.75.53.55
5710.75.53.56/3210.75.53.56 – 10.75.53.5610.75.53.56
5810.75.53.57/3210.75.53.57 – 10.75.53.5710.75.53.57
5910.75.53.58/3210.75.53.58 – 10.75.53.5810.75.53.58
6010.75.53.59/3210.75.53.59 – 10.75.53.5910.75.53.59
6110.75.53.60/3210.75.53.60 – 10.75.53.6010.75.53.60
6210.75.53.61/3210.75.53.61 – 10.75.53.6110.75.53.61
6310.75.53.62/3210.75.53.62 – 10.75.53.6210.75.53.62
6410.75.53.63/3210.75.53.63 – 10.75.53.6310.75.53.63
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 →