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)10.158.59.0/25
network10.158.59.0/25
broadcast10.158.59.127
first host10.158.59.1
last host10.158.59.126
subnet mask255.255.255.128
wildcard0.0.0.127
addresses128
usable hosts126
classA
ipcalc 10.158.59.0/25
address00001010.10011110.00111011.00000000
subnet mask11111111.11111111.11111111.10000000
network00001010.10011110.00111011.00000000
broadcast00001010.10011110.00111011.01111111
green = network part, grey = host part
hex0x0a9e3b00
decimal178141952
reverse dns0.59.158.10.in-addr.arpa
ipv4-mapped::ffff:a9e:3b00

/25 split into /32 · 128 subnets

close ×
#networkhost rangebroadcast
110.158.59.0/3210.158.59.0 – 10.158.59.010.158.59.0
210.158.59.1/3210.158.59.1 – 10.158.59.110.158.59.1
310.158.59.2/3210.158.59.2 – 10.158.59.210.158.59.2
410.158.59.3/3210.158.59.3 – 10.158.59.310.158.59.3
510.158.59.4/3210.158.59.4 – 10.158.59.410.158.59.4
610.158.59.5/3210.158.59.5 – 10.158.59.510.158.59.5
710.158.59.6/3210.158.59.6 – 10.158.59.610.158.59.6
810.158.59.7/3210.158.59.7 – 10.158.59.710.158.59.7
910.158.59.8/3210.158.59.8 – 10.158.59.810.158.59.8
1010.158.59.9/3210.158.59.9 – 10.158.59.910.158.59.9
1110.158.59.10/3210.158.59.10 – 10.158.59.1010.158.59.10
1210.158.59.11/3210.158.59.11 – 10.158.59.1110.158.59.11
1310.158.59.12/3210.158.59.12 – 10.158.59.1210.158.59.12
1410.158.59.13/3210.158.59.13 – 10.158.59.1310.158.59.13
1510.158.59.14/3210.158.59.14 – 10.158.59.1410.158.59.14
1610.158.59.15/3210.158.59.15 – 10.158.59.1510.158.59.15
1710.158.59.16/3210.158.59.16 – 10.158.59.1610.158.59.16
1810.158.59.17/3210.158.59.17 – 10.158.59.1710.158.59.17
1910.158.59.18/3210.158.59.18 – 10.158.59.1810.158.59.18
2010.158.59.19/3210.158.59.19 – 10.158.59.1910.158.59.19
2110.158.59.20/3210.158.59.20 – 10.158.59.2010.158.59.20
2210.158.59.21/3210.158.59.21 – 10.158.59.2110.158.59.21
2310.158.59.22/3210.158.59.22 – 10.158.59.2210.158.59.22
2410.158.59.23/3210.158.59.23 – 10.158.59.2310.158.59.23
2510.158.59.24/3210.158.59.24 – 10.158.59.2410.158.59.24
2610.158.59.25/3210.158.59.25 – 10.158.59.2510.158.59.25
2710.158.59.26/3210.158.59.26 – 10.158.59.2610.158.59.26
2810.158.59.27/3210.158.59.27 – 10.158.59.2710.158.59.27
2910.158.59.28/3210.158.59.28 – 10.158.59.2810.158.59.28
3010.158.59.29/3210.158.59.29 – 10.158.59.2910.158.59.29
3110.158.59.30/3210.158.59.30 – 10.158.59.3010.158.59.30
3210.158.59.31/3210.158.59.31 – 10.158.59.3110.158.59.31
3310.158.59.32/3210.158.59.32 – 10.158.59.3210.158.59.32
3410.158.59.33/3210.158.59.33 – 10.158.59.3310.158.59.33
3510.158.59.34/3210.158.59.34 – 10.158.59.3410.158.59.34
3610.158.59.35/3210.158.59.35 – 10.158.59.3510.158.59.35
3710.158.59.36/3210.158.59.36 – 10.158.59.3610.158.59.36
3810.158.59.37/3210.158.59.37 – 10.158.59.3710.158.59.37
3910.158.59.38/3210.158.59.38 – 10.158.59.3810.158.59.38
4010.158.59.39/3210.158.59.39 – 10.158.59.3910.158.59.39
4110.158.59.40/3210.158.59.40 – 10.158.59.4010.158.59.40
4210.158.59.41/3210.158.59.41 – 10.158.59.4110.158.59.41
4310.158.59.42/3210.158.59.42 – 10.158.59.4210.158.59.42
4410.158.59.43/3210.158.59.43 – 10.158.59.4310.158.59.43
4510.158.59.44/3210.158.59.44 – 10.158.59.4410.158.59.44
4610.158.59.45/3210.158.59.45 – 10.158.59.4510.158.59.45
4710.158.59.46/3210.158.59.46 – 10.158.59.4610.158.59.46
4810.158.59.47/3210.158.59.47 – 10.158.59.4710.158.59.47
4910.158.59.48/3210.158.59.48 – 10.158.59.4810.158.59.48
5010.158.59.49/3210.158.59.49 – 10.158.59.4910.158.59.49
5110.158.59.50/3210.158.59.50 – 10.158.59.5010.158.59.50
5210.158.59.51/3210.158.59.51 – 10.158.59.5110.158.59.51
5310.158.59.52/3210.158.59.52 – 10.158.59.5210.158.59.52
5410.158.59.53/3210.158.59.53 – 10.158.59.5310.158.59.53
5510.158.59.54/3210.158.59.54 – 10.158.59.5410.158.59.54
5610.158.59.55/3210.158.59.55 – 10.158.59.5510.158.59.55
5710.158.59.56/3210.158.59.56 – 10.158.59.5610.158.59.56
5810.158.59.57/3210.158.59.57 – 10.158.59.5710.158.59.57
5910.158.59.58/3210.158.59.58 – 10.158.59.5810.158.59.58
6010.158.59.59/3210.158.59.59 – 10.158.59.5910.158.59.59
6110.158.59.60/3210.158.59.60 – 10.158.59.6010.158.59.60
6210.158.59.61/3210.158.59.61 – 10.158.59.6110.158.59.61
6310.158.59.62/3210.158.59.62 – 10.158.59.6210.158.59.62
6410.158.59.63/3210.158.59.63 – 10.158.59.6310.158.59.63
6510.158.59.64/3210.158.59.64 – 10.158.59.6410.158.59.64
6610.158.59.65/3210.158.59.65 – 10.158.59.6510.158.59.65
6710.158.59.66/3210.158.59.66 – 10.158.59.6610.158.59.66
6810.158.59.67/3210.158.59.67 – 10.158.59.6710.158.59.67
6910.158.59.68/3210.158.59.68 – 10.158.59.6810.158.59.68
7010.158.59.69/3210.158.59.69 – 10.158.59.6910.158.59.69
7110.158.59.70/3210.158.59.70 – 10.158.59.7010.158.59.70
7210.158.59.71/3210.158.59.71 – 10.158.59.7110.158.59.71
7310.158.59.72/3210.158.59.72 – 10.158.59.7210.158.59.72
7410.158.59.73/3210.158.59.73 – 10.158.59.7310.158.59.73
7510.158.59.74/3210.158.59.74 – 10.158.59.7410.158.59.74
7610.158.59.75/3210.158.59.75 – 10.158.59.7510.158.59.75
7710.158.59.76/3210.158.59.76 – 10.158.59.7610.158.59.76
7810.158.59.77/3210.158.59.77 – 10.158.59.7710.158.59.77
7910.158.59.78/3210.158.59.78 – 10.158.59.7810.158.59.78
8010.158.59.79/3210.158.59.79 – 10.158.59.7910.158.59.79
8110.158.59.80/3210.158.59.80 – 10.158.59.8010.158.59.80
8210.158.59.81/3210.158.59.81 – 10.158.59.8110.158.59.81
8310.158.59.82/3210.158.59.82 – 10.158.59.8210.158.59.82
8410.158.59.83/3210.158.59.83 – 10.158.59.8310.158.59.83
8510.158.59.84/3210.158.59.84 – 10.158.59.8410.158.59.84
8610.158.59.85/3210.158.59.85 – 10.158.59.8510.158.59.85
8710.158.59.86/3210.158.59.86 – 10.158.59.8610.158.59.86
8810.158.59.87/3210.158.59.87 – 10.158.59.8710.158.59.87
8910.158.59.88/3210.158.59.88 – 10.158.59.8810.158.59.88
9010.158.59.89/3210.158.59.89 – 10.158.59.8910.158.59.89
9110.158.59.90/3210.158.59.90 – 10.158.59.9010.158.59.90
9210.158.59.91/3210.158.59.91 – 10.158.59.9110.158.59.91
9310.158.59.92/3210.158.59.92 – 10.158.59.9210.158.59.92
9410.158.59.93/3210.158.59.93 – 10.158.59.9310.158.59.93
9510.158.59.94/3210.158.59.94 – 10.158.59.9410.158.59.94
9610.158.59.95/3210.158.59.95 – 10.158.59.9510.158.59.95
9710.158.59.96/3210.158.59.96 – 10.158.59.9610.158.59.96
9810.158.59.97/3210.158.59.97 – 10.158.59.9710.158.59.97
9910.158.59.98/3210.158.59.98 – 10.158.59.9810.158.59.98
10010.158.59.99/3210.158.59.99 – 10.158.59.9910.158.59.99
10110.158.59.100/3210.158.59.100 – 10.158.59.10010.158.59.100
10210.158.59.101/3210.158.59.101 – 10.158.59.10110.158.59.101
10310.158.59.102/3210.158.59.102 – 10.158.59.10210.158.59.102
10410.158.59.103/3210.158.59.103 – 10.158.59.10310.158.59.103
10510.158.59.104/3210.158.59.104 – 10.158.59.10410.158.59.104
10610.158.59.105/3210.158.59.105 – 10.158.59.10510.158.59.105
10710.158.59.106/3210.158.59.106 – 10.158.59.10610.158.59.106
10810.158.59.107/3210.158.59.107 – 10.158.59.10710.158.59.107
10910.158.59.108/3210.158.59.108 – 10.158.59.10810.158.59.108
11010.158.59.109/3210.158.59.109 – 10.158.59.10910.158.59.109
11110.158.59.110/3210.158.59.110 – 10.158.59.11010.158.59.110
11210.158.59.111/3210.158.59.111 – 10.158.59.11110.158.59.111
11310.158.59.112/3210.158.59.112 – 10.158.59.11210.158.59.112
11410.158.59.113/3210.158.59.113 – 10.158.59.11310.158.59.113
11510.158.59.114/3210.158.59.114 – 10.158.59.11410.158.59.114
11610.158.59.115/3210.158.59.115 – 10.158.59.11510.158.59.115
11710.158.59.116/3210.158.59.116 – 10.158.59.11610.158.59.116
11810.158.59.117/3210.158.59.117 – 10.158.59.11710.158.59.117
11910.158.59.118/3210.158.59.118 – 10.158.59.11810.158.59.118
12010.158.59.119/3210.158.59.119 – 10.158.59.11910.158.59.119
12110.158.59.120/3210.158.59.120 – 10.158.59.12010.158.59.120
12210.158.59.121/3210.158.59.121 – 10.158.59.12110.158.59.121
12310.158.59.122/3210.158.59.122 – 10.158.59.12210.158.59.122
12410.158.59.123/3210.158.59.123 – 10.158.59.12310.158.59.123
12510.158.59.124/3210.158.59.124 – 10.158.59.12410.158.59.124
12610.158.59.125/3210.158.59.125 – 10.158.59.12510.158.59.125
12710.158.59.126/3210.158.59.126 – 10.158.59.12610.158.59.126
12810.158.59.127/3210.158.59.127 – 10.158.59.12710.158.59.127
01 / table

IPv4 CIDR prefix table.

Click a prefix longer than your network to split it into subnets.

prefixsubnet maskaddresseshostsin your /25
/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-
/25255.255.255.1281281261
/26255.255.255.19264622 split →
/27255.255.255.22432304 split →
/28255.255.255.24016148 split →
/29255.255.255.2488616 split →
/30255.255.255.2524232 split →
/31255.255.255.2542264 split →
/32255.255.255.25511128 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 →