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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)10.52.35.0/26
network10.52.35.0/26
broadcast10.52.35.63
first host10.52.35.1
last host10.52.35.62
subnet mask255.255.255.192
wildcard0.0.0.63
addresses64
usable hosts62
classA
ipcalc 10.52.35.0/26
address00001010.00110100.00100011.00000000
subnet mask11111111.11111111.11111111.11000000
network00001010.00110100.00100011.00000000
broadcast00001010.00110100.00100011.00111111
green = network part, grey = host part
hex0x0a342300
decimal171188992
reverse dns0.35.52.10.in-addr.arpa
ipv4-mapped::ffff:a34:2300

/26 split into /32 · 64 subnets

close ×
#networkhost rangebroadcast
110.52.35.0/3210.52.35.0 – 10.52.35.010.52.35.0
210.52.35.1/3210.52.35.1 – 10.52.35.110.52.35.1
310.52.35.2/3210.52.35.2 – 10.52.35.210.52.35.2
410.52.35.3/3210.52.35.3 – 10.52.35.310.52.35.3
510.52.35.4/3210.52.35.4 – 10.52.35.410.52.35.4
610.52.35.5/3210.52.35.5 – 10.52.35.510.52.35.5
710.52.35.6/3210.52.35.6 – 10.52.35.610.52.35.6
810.52.35.7/3210.52.35.7 – 10.52.35.710.52.35.7
910.52.35.8/3210.52.35.8 – 10.52.35.810.52.35.8
1010.52.35.9/3210.52.35.9 – 10.52.35.910.52.35.9
1110.52.35.10/3210.52.35.10 – 10.52.35.1010.52.35.10
1210.52.35.11/3210.52.35.11 – 10.52.35.1110.52.35.11
1310.52.35.12/3210.52.35.12 – 10.52.35.1210.52.35.12
1410.52.35.13/3210.52.35.13 – 10.52.35.1310.52.35.13
1510.52.35.14/3210.52.35.14 – 10.52.35.1410.52.35.14
1610.52.35.15/3210.52.35.15 – 10.52.35.1510.52.35.15
1710.52.35.16/3210.52.35.16 – 10.52.35.1610.52.35.16
1810.52.35.17/3210.52.35.17 – 10.52.35.1710.52.35.17
1910.52.35.18/3210.52.35.18 – 10.52.35.1810.52.35.18
2010.52.35.19/3210.52.35.19 – 10.52.35.1910.52.35.19
2110.52.35.20/3210.52.35.20 – 10.52.35.2010.52.35.20
2210.52.35.21/3210.52.35.21 – 10.52.35.2110.52.35.21
2310.52.35.22/3210.52.35.22 – 10.52.35.2210.52.35.22
2410.52.35.23/3210.52.35.23 – 10.52.35.2310.52.35.23
2510.52.35.24/3210.52.35.24 – 10.52.35.2410.52.35.24
2610.52.35.25/3210.52.35.25 – 10.52.35.2510.52.35.25
2710.52.35.26/3210.52.35.26 – 10.52.35.2610.52.35.26
2810.52.35.27/3210.52.35.27 – 10.52.35.2710.52.35.27
2910.52.35.28/3210.52.35.28 – 10.52.35.2810.52.35.28
3010.52.35.29/3210.52.35.29 – 10.52.35.2910.52.35.29
3110.52.35.30/3210.52.35.30 – 10.52.35.3010.52.35.30
3210.52.35.31/3210.52.35.31 – 10.52.35.3110.52.35.31
3310.52.35.32/3210.52.35.32 – 10.52.35.3210.52.35.32
3410.52.35.33/3210.52.35.33 – 10.52.35.3310.52.35.33
3510.52.35.34/3210.52.35.34 – 10.52.35.3410.52.35.34
3610.52.35.35/3210.52.35.35 – 10.52.35.3510.52.35.35
3710.52.35.36/3210.52.35.36 – 10.52.35.3610.52.35.36
3810.52.35.37/3210.52.35.37 – 10.52.35.3710.52.35.37
3910.52.35.38/3210.52.35.38 – 10.52.35.3810.52.35.38
4010.52.35.39/3210.52.35.39 – 10.52.35.3910.52.35.39
4110.52.35.40/3210.52.35.40 – 10.52.35.4010.52.35.40
4210.52.35.41/3210.52.35.41 – 10.52.35.4110.52.35.41
4310.52.35.42/3210.52.35.42 – 10.52.35.4210.52.35.42
4410.52.35.43/3210.52.35.43 – 10.52.35.4310.52.35.43
4510.52.35.44/3210.52.35.44 – 10.52.35.4410.52.35.44
4610.52.35.45/3210.52.35.45 – 10.52.35.4510.52.35.45
4710.52.35.46/3210.52.35.46 – 10.52.35.4610.52.35.46
4810.52.35.47/3210.52.35.47 – 10.52.35.4710.52.35.47
4910.52.35.48/3210.52.35.48 – 10.52.35.4810.52.35.48
5010.52.35.49/3210.52.35.49 – 10.52.35.4910.52.35.49
5110.52.35.50/3210.52.35.50 – 10.52.35.5010.52.35.50
5210.52.35.51/3210.52.35.51 – 10.52.35.5110.52.35.51
5310.52.35.52/3210.52.35.52 – 10.52.35.5210.52.35.52
5410.52.35.53/3210.52.35.53 – 10.52.35.5310.52.35.53
5510.52.35.54/3210.52.35.54 – 10.52.35.5410.52.35.54
5610.52.35.55/3210.52.35.55 – 10.52.35.5510.52.35.55
5710.52.35.56/3210.52.35.56 – 10.52.35.5610.52.35.56
5810.52.35.57/3210.52.35.57 – 10.52.35.5710.52.35.57
5910.52.35.58/3210.52.35.58 – 10.52.35.5810.52.35.58
6010.52.35.59/3210.52.35.59 – 10.52.35.5910.52.35.59
6110.52.35.60/3210.52.35.60 – 10.52.35.6010.52.35.60
6210.52.35.61/3210.52.35.61 – 10.52.35.6110.52.35.61
6310.52.35.62/3210.52.35.62 – 10.52.35.6210.52.35.62
6410.52.35.63/3210.52.35.63 – 10.52.35.6310.52.35.63
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 →