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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)10.1.7.0/26
network10.1.7.0/26
broadcast10.1.7.63
first host10.1.7.1
last host10.1.7.62
subnet mask255.255.255.192
wildcard0.0.0.63
addresses64
usable hosts62
classA
ipcalc 10.1.7.0/26
address00001010.00000001.00000111.00000000
subnet mask11111111.11111111.11111111.11000000
network00001010.00000001.00000111.00000000
broadcast00001010.00000001.00000111.00111111
green = network part, grey = host part
hex0x0a010700
decimal167839488
reverse dns0.7.1.10.in-addr.arpa
ipv4-mapped::ffff:a01:700

/26 split into /32 · 64 subnets

close ×
#networkhost rangebroadcast
110.1.7.0/3210.1.7.0 – 10.1.7.010.1.7.0
210.1.7.1/3210.1.7.1 – 10.1.7.110.1.7.1
310.1.7.2/3210.1.7.2 – 10.1.7.210.1.7.2
410.1.7.3/3210.1.7.3 – 10.1.7.310.1.7.3
510.1.7.4/3210.1.7.4 – 10.1.7.410.1.7.4
610.1.7.5/3210.1.7.5 – 10.1.7.510.1.7.5
710.1.7.6/3210.1.7.6 – 10.1.7.610.1.7.6
810.1.7.7/3210.1.7.7 – 10.1.7.710.1.7.7
910.1.7.8/3210.1.7.8 – 10.1.7.810.1.7.8
1010.1.7.9/3210.1.7.9 – 10.1.7.910.1.7.9
1110.1.7.10/3210.1.7.10 – 10.1.7.1010.1.7.10
1210.1.7.11/3210.1.7.11 – 10.1.7.1110.1.7.11
1310.1.7.12/3210.1.7.12 – 10.1.7.1210.1.7.12
1410.1.7.13/3210.1.7.13 – 10.1.7.1310.1.7.13
1510.1.7.14/3210.1.7.14 – 10.1.7.1410.1.7.14
1610.1.7.15/3210.1.7.15 – 10.1.7.1510.1.7.15
1710.1.7.16/3210.1.7.16 – 10.1.7.1610.1.7.16
1810.1.7.17/3210.1.7.17 – 10.1.7.1710.1.7.17
1910.1.7.18/3210.1.7.18 – 10.1.7.1810.1.7.18
2010.1.7.19/3210.1.7.19 – 10.1.7.1910.1.7.19
2110.1.7.20/3210.1.7.20 – 10.1.7.2010.1.7.20
2210.1.7.21/3210.1.7.21 – 10.1.7.2110.1.7.21
2310.1.7.22/3210.1.7.22 – 10.1.7.2210.1.7.22
2410.1.7.23/3210.1.7.23 – 10.1.7.2310.1.7.23
2510.1.7.24/3210.1.7.24 – 10.1.7.2410.1.7.24
2610.1.7.25/3210.1.7.25 – 10.1.7.2510.1.7.25
2710.1.7.26/3210.1.7.26 – 10.1.7.2610.1.7.26
2810.1.7.27/3210.1.7.27 – 10.1.7.2710.1.7.27
2910.1.7.28/3210.1.7.28 – 10.1.7.2810.1.7.28
3010.1.7.29/3210.1.7.29 – 10.1.7.2910.1.7.29
3110.1.7.30/3210.1.7.30 – 10.1.7.3010.1.7.30
3210.1.7.31/3210.1.7.31 – 10.1.7.3110.1.7.31
3310.1.7.32/3210.1.7.32 – 10.1.7.3210.1.7.32
3410.1.7.33/3210.1.7.33 – 10.1.7.3310.1.7.33
3510.1.7.34/3210.1.7.34 – 10.1.7.3410.1.7.34
3610.1.7.35/3210.1.7.35 – 10.1.7.3510.1.7.35
3710.1.7.36/3210.1.7.36 – 10.1.7.3610.1.7.36
3810.1.7.37/3210.1.7.37 – 10.1.7.3710.1.7.37
3910.1.7.38/3210.1.7.38 – 10.1.7.3810.1.7.38
4010.1.7.39/3210.1.7.39 – 10.1.7.3910.1.7.39
4110.1.7.40/3210.1.7.40 – 10.1.7.4010.1.7.40
4210.1.7.41/3210.1.7.41 – 10.1.7.4110.1.7.41
4310.1.7.42/3210.1.7.42 – 10.1.7.4210.1.7.42
4410.1.7.43/3210.1.7.43 – 10.1.7.4310.1.7.43
4510.1.7.44/3210.1.7.44 – 10.1.7.4410.1.7.44
4610.1.7.45/3210.1.7.45 – 10.1.7.4510.1.7.45
4710.1.7.46/3210.1.7.46 – 10.1.7.4610.1.7.46
4810.1.7.47/3210.1.7.47 – 10.1.7.4710.1.7.47
4910.1.7.48/3210.1.7.48 – 10.1.7.4810.1.7.48
5010.1.7.49/3210.1.7.49 – 10.1.7.4910.1.7.49
5110.1.7.50/3210.1.7.50 – 10.1.7.5010.1.7.50
5210.1.7.51/3210.1.7.51 – 10.1.7.5110.1.7.51
5310.1.7.52/3210.1.7.52 – 10.1.7.5210.1.7.52
5410.1.7.53/3210.1.7.53 – 10.1.7.5310.1.7.53
5510.1.7.54/3210.1.7.54 – 10.1.7.5410.1.7.54
5610.1.7.55/3210.1.7.55 – 10.1.7.5510.1.7.55
5710.1.7.56/3210.1.7.56 – 10.1.7.5610.1.7.56
5810.1.7.57/3210.1.7.57 – 10.1.7.5710.1.7.57
5910.1.7.58/3210.1.7.58 – 10.1.7.5810.1.7.58
6010.1.7.59/3210.1.7.59 – 10.1.7.5910.1.7.59
6110.1.7.60/3210.1.7.60 – 10.1.7.6010.1.7.60
6210.1.7.61/3210.1.7.61 – 10.1.7.6110.1.7.61
6310.1.7.62/3210.1.7.62 – 10.1.7.6210.1.7.62
6410.1.7.63/3210.1.7.63 – 10.1.7.6310.1.7.63
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 →