ip
ipku.in

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)10.182.47.0/26
network10.182.47.0/26
broadcast10.182.47.63
first host10.182.47.1
last host10.182.47.62
subnet mask255.255.255.192
wildcard0.0.0.63
addresses64
usable hosts62
classA
ipcalc 10.182.47.0/26
address00001010.10110110.00101111.00000000
subnet mask11111111.11111111.11111111.11000000
network00001010.10110110.00101111.00000000
broadcast00001010.10110110.00101111.00111111
green = network part, grey = host part
hex0x0ab62f00
decimal179711744
reverse dns0.47.182.10.in-addr.arpa
ipv4-mapped::ffff:ab6:2f00

/26 split into /32 · 64 subnets

close ×
#networkhost rangebroadcast
110.182.47.0/3210.182.47.0 – 10.182.47.010.182.47.0
210.182.47.1/3210.182.47.1 – 10.182.47.110.182.47.1
310.182.47.2/3210.182.47.2 – 10.182.47.210.182.47.2
410.182.47.3/3210.182.47.3 – 10.182.47.310.182.47.3
510.182.47.4/3210.182.47.4 – 10.182.47.410.182.47.4
610.182.47.5/3210.182.47.5 – 10.182.47.510.182.47.5
710.182.47.6/3210.182.47.6 – 10.182.47.610.182.47.6
810.182.47.7/3210.182.47.7 – 10.182.47.710.182.47.7
910.182.47.8/3210.182.47.8 – 10.182.47.810.182.47.8
1010.182.47.9/3210.182.47.9 – 10.182.47.910.182.47.9
1110.182.47.10/3210.182.47.10 – 10.182.47.1010.182.47.10
1210.182.47.11/3210.182.47.11 – 10.182.47.1110.182.47.11
1310.182.47.12/3210.182.47.12 – 10.182.47.1210.182.47.12
1410.182.47.13/3210.182.47.13 – 10.182.47.1310.182.47.13
1510.182.47.14/3210.182.47.14 – 10.182.47.1410.182.47.14
1610.182.47.15/3210.182.47.15 – 10.182.47.1510.182.47.15
1710.182.47.16/3210.182.47.16 – 10.182.47.1610.182.47.16
1810.182.47.17/3210.182.47.17 – 10.182.47.1710.182.47.17
1910.182.47.18/3210.182.47.18 – 10.182.47.1810.182.47.18
2010.182.47.19/3210.182.47.19 – 10.182.47.1910.182.47.19
2110.182.47.20/3210.182.47.20 – 10.182.47.2010.182.47.20
2210.182.47.21/3210.182.47.21 – 10.182.47.2110.182.47.21
2310.182.47.22/3210.182.47.22 – 10.182.47.2210.182.47.22
2410.182.47.23/3210.182.47.23 – 10.182.47.2310.182.47.23
2510.182.47.24/3210.182.47.24 – 10.182.47.2410.182.47.24
2610.182.47.25/3210.182.47.25 – 10.182.47.2510.182.47.25
2710.182.47.26/3210.182.47.26 – 10.182.47.2610.182.47.26
2810.182.47.27/3210.182.47.27 – 10.182.47.2710.182.47.27
2910.182.47.28/3210.182.47.28 – 10.182.47.2810.182.47.28
3010.182.47.29/3210.182.47.29 – 10.182.47.2910.182.47.29
3110.182.47.30/3210.182.47.30 – 10.182.47.3010.182.47.30
3210.182.47.31/3210.182.47.31 – 10.182.47.3110.182.47.31
3310.182.47.32/3210.182.47.32 – 10.182.47.3210.182.47.32
3410.182.47.33/3210.182.47.33 – 10.182.47.3310.182.47.33
3510.182.47.34/3210.182.47.34 – 10.182.47.3410.182.47.34
3610.182.47.35/3210.182.47.35 – 10.182.47.3510.182.47.35
3710.182.47.36/3210.182.47.36 – 10.182.47.3610.182.47.36
3810.182.47.37/3210.182.47.37 – 10.182.47.3710.182.47.37
3910.182.47.38/3210.182.47.38 – 10.182.47.3810.182.47.38
4010.182.47.39/3210.182.47.39 – 10.182.47.3910.182.47.39
4110.182.47.40/3210.182.47.40 – 10.182.47.4010.182.47.40
4210.182.47.41/3210.182.47.41 – 10.182.47.4110.182.47.41
4310.182.47.42/3210.182.47.42 – 10.182.47.4210.182.47.42
4410.182.47.43/3210.182.47.43 – 10.182.47.4310.182.47.43
4510.182.47.44/3210.182.47.44 – 10.182.47.4410.182.47.44
4610.182.47.45/3210.182.47.45 – 10.182.47.4510.182.47.45
4710.182.47.46/3210.182.47.46 – 10.182.47.4610.182.47.46
4810.182.47.47/3210.182.47.47 – 10.182.47.4710.182.47.47
4910.182.47.48/3210.182.47.48 – 10.182.47.4810.182.47.48
5010.182.47.49/3210.182.47.49 – 10.182.47.4910.182.47.49
5110.182.47.50/3210.182.47.50 – 10.182.47.5010.182.47.50
5210.182.47.51/3210.182.47.51 – 10.182.47.5110.182.47.51
5310.182.47.52/3210.182.47.52 – 10.182.47.5210.182.47.52
5410.182.47.53/3210.182.47.53 – 10.182.47.5310.182.47.53
5510.182.47.54/3210.182.47.54 – 10.182.47.5410.182.47.54
5610.182.47.55/3210.182.47.55 – 10.182.47.5510.182.47.55
5710.182.47.56/3210.182.47.56 – 10.182.47.5610.182.47.56
5810.182.47.57/3210.182.47.57 – 10.182.47.5710.182.47.57
5910.182.47.58/3210.182.47.58 – 10.182.47.5810.182.47.58
6010.182.47.59/3210.182.47.59 – 10.182.47.5910.182.47.59
6110.182.47.60/3210.182.47.60 – 10.182.47.6010.182.47.60
6210.182.47.61/3210.182.47.61 – 10.182.47.6110.182.47.61
6310.182.47.62/3210.182.47.62 – 10.182.47.6210.182.47.62
6410.182.47.63/3210.182.47.63 – 10.182.47.6310.182.47.63
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 →