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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)10.35.1.0/26
network10.35.1.0/26
broadcast10.35.1.63
first host10.35.1.1
last host10.35.1.62
subnet mask255.255.255.192
wildcard0.0.0.63
addresses64
usable hosts62
classA
ipcalc 10.35.1.0/26
address00001010.00100011.00000001.00000000
subnet mask11111111.11111111.11111111.11000000
network00001010.00100011.00000001.00000000
broadcast00001010.00100011.00000001.00111111
green = network part, grey = host part
hex0x0a230100
decimal170066176
reverse dns0.1.35.10.in-addr.arpa
ipv4-mapped::ffff:a23:100

/26 split into /32 · 64 subnets

close ×
#networkhost rangebroadcast
110.35.1.0/3210.35.1.0 – 10.35.1.010.35.1.0
210.35.1.1/3210.35.1.1 – 10.35.1.110.35.1.1
310.35.1.2/3210.35.1.2 – 10.35.1.210.35.1.2
410.35.1.3/3210.35.1.3 – 10.35.1.310.35.1.3
510.35.1.4/3210.35.1.4 – 10.35.1.410.35.1.4
610.35.1.5/3210.35.1.5 – 10.35.1.510.35.1.5
710.35.1.6/3210.35.1.6 – 10.35.1.610.35.1.6
810.35.1.7/3210.35.1.7 – 10.35.1.710.35.1.7
910.35.1.8/3210.35.1.8 – 10.35.1.810.35.1.8
1010.35.1.9/3210.35.1.9 – 10.35.1.910.35.1.9
1110.35.1.10/3210.35.1.10 – 10.35.1.1010.35.1.10
1210.35.1.11/3210.35.1.11 – 10.35.1.1110.35.1.11
1310.35.1.12/3210.35.1.12 – 10.35.1.1210.35.1.12
1410.35.1.13/3210.35.1.13 – 10.35.1.1310.35.1.13
1510.35.1.14/3210.35.1.14 – 10.35.1.1410.35.1.14
1610.35.1.15/3210.35.1.15 – 10.35.1.1510.35.1.15
1710.35.1.16/3210.35.1.16 – 10.35.1.1610.35.1.16
1810.35.1.17/3210.35.1.17 – 10.35.1.1710.35.1.17
1910.35.1.18/3210.35.1.18 – 10.35.1.1810.35.1.18
2010.35.1.19/3210.35.1.19 – 10.35.1.1910.35.1.19
2110.35.1.20/3210.35.1.20 – 10.35.1.2010.35.1.20
2210.35.1.21/3210.35.1.21 – 10.35.1.2110.35.1.21
2310.35.1.22/3210.35.1.22 – 10.35.1.2210.35.1.22
2410.35.1.23/3210.35.1.23 – 10.35.1.2310.35.1.23
2510.35.1.24/3210.35.1.24 – 10.35.1.2410.35.1.24
2610.35.1.25/3210.35.1.25 – 10.35.1.2510.35.1.25
2710.35.1.26/3210.35.1.26 – 10.35.1.2610.35.1.26
2810.35.1.27/3210.35.1.27 – 10.35.1.2710.35.1.27
2910.35.1.28/3210.35.1.28 – 10.35.1.2810.35.1.28
3010.35.1.29/3210.35.1.29 – 10.35.1.2910.35.1.29
3110.35.1.30/3210.35.1.30 – 10.35.1.3010.35.1.30
3210.35.1.31/3210.35.1.31 – 10.35.1.3110.35.1.31
3310.35.1.32/3210.35.1.32 – 10.35.1.3210.35.1.32
3410.35.1.33/3210.35.1.33 – 10.35.1.3310.35.1.33
3510.35.1.34/3210.35.1.34 – 10.35.1.3410.35.1.34
3610.35.1.35/3210.35.1.35 – 10.35.1.3510.35.1.35
3710.35.1.36/3210.35.1.36 – 10.35.1.3610.35.1.36
3810.35.1.37/3210.35.1.37 – 10.35.1.3710.35.1.37
3910.35.1.38/3210.35.1.38 – 10.35.1.3810.35.1.38
4010.35.1.39/3210.35.1.39 – 10.35.1.3910.35.1.39
4110.35.1.40/3210.35.1.40 – 10.35.1.4010.35.1.40
4210.35.1.41/3210.35.1.41 – 10.35.1.4110.35.1.41
4310.35.1.42/3210.35.1.42 – 10.35.1.4210.35.1.42
4410.35.1.43/3210.35.1.43 – 10.35.1.4310.35.1.43
4510.35.1.44/3210.35.1.44 – 10.35.1.4410.35.1.44
4610.35.1.45/3210.35.1.45 – 10.35.1.4510.35.1.45
4710.35.1.46/3210.35.1.46 – 10.35.1.4610.35.1.46
4810.35.1.47/3210.35.1.47 – 10.35.1.4710.35.1.47
4910.35.1.48/3210.35.1.48 – 10.35.1.4810.35.1.48
5010.35.1.49/3210.35.1.49 – 10.35.1.4910.35.1.49
5110.35.1.50/3210.35.1.50 – 10.35.1.5010.35.1.50
5210.35.1.51/3210.35.1.51 – 10.35.1.5110.35.1.51
5310.35.1.52/3210.35.1.52 – 10.35.1.5210.35.1.52
5410.35.1.53/3210.35.1.53 – 10.35.1.5310.35.1.53
5510.35.1.54/3210.35.1.54 – 10.35.1.5410.35.1.54
5610.35.1.55/3210.35.1.55 – 10.35.1.5510.35.1.55
5710.35.1.56/3210.35.1.56 – 10.35.1.5610.35.1.56
5810.35.1.57/3210.35.1.57 – 10.35.1.5710.35.1.57
5910.35.1.58/3210.35.1.58 – 10.35.1.5810.35.1.58
6010.35.1.59/3210.35.1.59 – 10.35.1.5910.35.1.59
6110.35.1.60/3210.35.1.60 – 10.35.1.6010.35.1.60
6210.35.1.61/3210.35.1.61 – 10.35.1.6110.35.1.61
6310.35.1.62/3210.35.1.62 – 10.35.1.6210.35.1.62
6410.35.1.63/3210.35.1.63 – 10.35.1.6310.35.1.63
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 →