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)10.89.151.0/26
network10.89.151.0/26
broadcast10.89.151.63
first host10.89.151.1
last host10.89.151.62
subnet mask255.255.255.192
wildcard0.0.0.63
addresses64
usable hosts62
classA
ipcalc 10.89.151.0/26
address00001010.01011001.10010111.00000000
subnet mask11111111.11111111.11111111.11000000
network00001010.01011001.10010111.00000000
broadcast00001010.01011001.10010111.00111111
green = network part, grey = host part
hex0x0a599700
decimal173643520
reverse dns0.151.89.10.in-addr.arpa
ipv4-mapped::ffff:a59:9700

/26 split into /32 · 64 subnets

close ×
#networkhost rangebroadcast
110.89.151.0/3210.89.151.0 – 10.89.151.010.89.151.0
210.89.151.1/3210.89.151.1 – 10.89.151.110.89.151.1
310.89.151.2/3210.89.151.2 – 10.89.151.210.89.151.2
410.89.151.3/3210.89.151.3 – 10.89.151.310.89.151.3
510.89.151.4/3210.89.151.4 – 10.89.151.410.89.151.4
610.89.151.5/3210.89.151.5 – 10.89.151.510.89.151.5
710.89.151.6/3210.89.151.6 – 10.89.151.610.89.151.6
810.89.151.7/3210.89.151.7 – 10.89.151.710.89.151.7
910.89.151.8/3210.89.151.8 – 10.89.151.810.89.151.8
1010.89.151.9/3210.89.151.9 – 10.89.151.910.89.151.9
1110.89.151.10/3210.89.151.10 – 10.89.151.1010.89.151.10
1210.89.151.11/3210.89.151.11 – 10.89.151.1110.89.151.11
1310.89.151.12/3210.89.151.12 – 10.89.151.1210.89.151.12
1410.89.151.13/3210.89.151.13 – 10.89.151.1310.89.151.13
1510.89.151.14/3210.89.151.14 – 10.89.151.1410.89.151.14
1610.89.151.15/3210.89.151.15 – 10.89.151.1510.89.151.15
1710.89.151.16/3210.89.151.16 – 10.89.151.1610.89.151.16
1810.89.151.17/3210.89.151.17 – 10.89.151.1710.89.151.17
1910.89.151.18/3210.89.151.18 – 10.89.151.1810.89.151.18
2010.89.151.19/3210.89.151.19 – 10.89.151.1910.89.151.19
2110.89.151.20/3210.89.151.20 – 10.89.151.2010.89.151.20
2210.89.151.21/3210.89.151.21 – 10.89.151.2110.89.151.21
2310.89.151.22/3210.89.151.22 – 10.89.151.2210.89.151.22
2410.89.151.23/3210.89.151.23 – 10.89.151.2310.89.151.23
2510.89.151.24/3210.89.151.24 – 10.89.151.2410.89.151.24
2610.89.151.25/3210.89.151.25 – 10.89.151.2510.89.151.25
2710.89.151.26/3210.89.151.26 – 10.89.151.2610.89.151.26
2810.89.151.27/3210.89.151.27 – 10.89.151.2710.89.151.27
2910.89.151.28/3210.89.151.28 – 10.89.151.2810.89.151.28
3010.89.151.29/3210.89.151.29 – 10.89.151.2910.89.151.29
3110.89.151.30/3210.89.151.30 – 10.89.151.3010.89.151.30
3210.89.151.31/3210.89.151.31 – 10.89.151.3110.89.151.31
3310.89.151.32/3210.89.151.32 – 10.89.151.3210.89.151.32
3410.89.151.33/3210.89.151.33 – 10.89.151.3310.89.151.33
3510.89.151.34/3210.89.151.34 – 10.89.151.3410.89.151.34
3610.89.151.35/3210.89.151.35 – 10.89.151.3510.89.151.35
3710.89.151.36/3210.89.151.36 – 10.89.151.3610.89.151.36
3810.89.151.37/3210.89.151.37 – 10.89.151.3710.89.151.37
3910.89.151.38/3210.89.151.38 – 10.89.151.3810.89.151.38
4010.89.151.39/3210.89.151.39 – 10.89.151.3910.89.151.39
4110.89.151.40/3210.89.151.40 – 10.89.151.4010.89.151.40
4210.89.151.41/3210.89.151.41 – 10.89.151.4110.89.151.41
4310.89.151.42/3210.89.151.42 – 10.89.151.4210.89.151.42
4410.89.151.43/3210.89.151.43 – 10.89.151.4310.89.151.43
4510.89.151.44/3210.89.151.44 – 10.89.151.4410.89.151.44
4610.89.151.45/3210.89.151.45 – 10.89.151.4510.89.151.45
4710.89.151.46/3210.89.151.46 – 10.89.151.4610.89.151.46
4810.89.151.47/3210.89.151.47 – 10.89.151.4710.89.151.47
4910.89.151.48/3210.89.151.48 – 10.89.151.4810.89.151.48
5010.89.151.49/3210.89.151.49 – 10.89.151.4910.89.151.49
5110.89.151.50/3210.89.151.50 – 10.89.151.5010.89.151.50
5210.89.151.51/3210.89.151.51 – 10.89.151.5110.89.151.51
5310.89.151.52/3210.89.151.52 – 10.89.151.5210.89.151.52
5410.89.151.53/3210.89.151.53 – 10.89.151.5310.89.151.53
5510.89.151.54/3210.89.151.54 – 10.89.151.5410.89.151.54
5610.89.151.55/3210.89.151.55 – 10.89.151.5510.89.151.55
5710.89.151.56/3210.89.151.56 – 10.89.151.5610.89.151.56
5810.89.151.57/3210.89.151.57 – 10.89.151.5710.89.151.57
5910.89.151.58/3210.89.151.58 – 10.89.151.5810.89.151.58
6010.89.151.59/3210.89.151.59 – 10.89.151.5910.89.151.59
6110.89.151.60/3210.89.151.60 – 10.89.151.6010.89.151.60
6210.89.151.61/3210.89.151.61 – 10.89.151.6110.89.151.61
6310.89.151.62/3210.89.151.62 – 10.89.151.6210.89.151.62
6410.89.151.63/3210.89.151.63 – 10.89.151.6310.89.151.63
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 →