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)10.59.136.0/25
network10.59.136.0/25
broadcast10.59.136.127
first host10.59.136.1
last host10.59.136.126
subnet mask255.255.255.128
wildcard0.0.0.127
addresses128
usable hosts126
classA
ipcalc 10.59.136.0/25
address00001010.00111011.10001000.00000000
subnet mask11111111.11111111.11111111.10000000
network00001010.00111011.10001000.00000000
broadcast00001010.00111011.10001000.01111111
green = network part, grey = host part
hex0x0a3b8800
decimal171673600
reverse dns0.136.59.10.in-addr.arpa
ipv4-mapped::ffff:a3b:8800

/25 split into /32 · 128 subnets

close ×
#networkhost rangebroadcast
110.59.136.0/3210.59.136.0 – 10.59.136.010.59.136.0
210.59.136.1/3210.59.136.1 – 10.59.136.110.59.136.1
310.59.136.2/3210.59.136.2 – 10.59.136.210.59.136.2
410.59.136.3/3210.59.136.3 – 10.59.136.310.59.136.3
510.59.136.4/3210.59.136.4 – 10.59.136.410.59.136.4
610.59.136.5/3210.59.136.5 – 10.59.136.510.59.136.5
710.59.136.6/3210.59.136.6 – 10.59.136.610.59.136.6
810.59.136.7/3210.59.136.7 – 10.59.136.710.59.136.7
910.59.136.8/3210.59.136.8 – 10.59.136.810.59.136.8
1010.59.136.9/3210.59.136.9 – 10.59.136.910.59.136.9
1110.59.136.10/3210.59.136.10 – 10.59.136.1010.59.136.10
1210.59.136.11/3210.59.136.11 – 10.59.136.1110.59.136.11
1310.59.136.12/3210.59.136.12 – 10.59.136.1210.59.136.12
1410.59.136.13/3210.59.136.13 – 10.59.136.1310.59.136.13
1510.59.136.14/3210.59.136.14 – 10.59.136.1410.59.136.14
1610.59.136.15/3210.59.136.15 – 10.59.136.1510.59.136.15
1710.59.136.16/3210.59.136.16 – 10.59.136.1610.59.136.16
1810.59.136.17/3210.59.136.17 – 10.59.136.1710.59.136.17
1910.59.136.18/3210.59.136.18 – 10.59.136.1810.59.136.18
2010.59.136.19/3210.59.136.19 – 10.59.136.1910.59.136.19
2110.59.136.20/3210.59.136.20 – 10.59.136.2010.59.136.20
2210.59.136.21/3210.59.136.21 – 10.59.136.2110.59.136.21
2310.59.136.22/3210.59.136.22 – 10.59.136.2210.59.136.22
2410.59.136.23/3210.59.136.23 – 10.59.136.2310.59.136.23
2510.59.136.24/3210.59.136.24 – 10.59.136.2410.59.136.24
2610.59.136.25/3210.59.136.25 – 10.59.136.2510.59.136.25
2710.59.136.26/3210.59.136.26 – 10.59.136.2610.59.136.26
2810.59.136.27/3210.59.136.27 – 10.59.136.2710.59.136.27
2910.59.136.28/3210.59.136.28 – 10.59.136.2810.59.136.28
3010.59.136.29/3210.59.136.29 – 10.59.136.2910.59.136.29
3110.59.136.30/3210.59.136.30 – 10.59.136.3010.59.136.30
3210.59.136.31/3210.59.136.31 – 10.59.136.3110.59.136.31
3310.59.136.32/3210.59.136.32 – 10.59.136.3210.59.136.32
3410.59.136.33/3210.59.136.33 – 10.59.136.3310.59.136.33
3510.59.136.34/3210.59.136.34 – 10.59.136.3410.59.136.34
3610.59.136.35/3210.59.136.35 – 10.59.136.3510.59.136.35
3710.59.136.36/3210.59.136.36 – 10.59.136.3610.59.136.36
3810.59.136.37/3210.59.136.37 – 10.59.136.3710.59.136.37
3910.59.136.38/3210.59.136.38 – 10.59.136.3810.59.136.38
4010.59.136.39/3210.59.136.39 – 10.59.136.3910.59.136.39
4110.59.136.40/3210.59.136.40 – 10.59.136.4010.59.136.40
4210.59.136.41/3210.59.136.41 – 10.59.136.4110.59.136.41
4310.59.136.42/3210.59.136.42 – 10.59.136.4210.59.136.42
4410.59.136.43/3210.59.136.43 – 10.59.136.4310.59.136.43
4510.59.136.44/3210.59.136.44 – 10.59.136.4410.59.136.44
4610.59.136.45/3210.59.136.45 – 10.59.136.4510.59.136.45
4710.59.136.46/3210.59.136.46 – 10.59.136.4610.59.136.46
4810.59.136.47/3210.59.136.47 – 10.59.136.4710.59.136.47
4910.59.136.48/3210.59.136.48 – 10.59.136.4810.59.136.48
5010.59.136.49/3210.59.136.49 – 10.59.136.4910.59.136.49
5110.59.136.50/3210.59.136.50 – 10.59.136.5010.59.136.50
5210.59.136.51/3210.59.136.51 – 10.59.136.5110.59.136.51
5310.59.136.52/3210.59.136.52 – 10.59.136.5210.59.136.52
5410.59.136.53/3210.59.136.53 – 10.59.136.5310.59.136.53
5510.59.136.54/3210.59.136.54 – 10.59.136.5410.59.136.54
5610.59.136.55/3210.59.136.55 – 10.59.136.5510.59.136.55
5710.59.136.56/3210.59.136.56 – 10.59.136.5610.59.136.56
5810.59.136.57/3210.59.136.57 – 10.59.136.5710.59.136.57
5910.59.136.58/3210.59.136.58 – 10.59.136.5810.59.136.58
6010.59.136.59/3210.59.136.59 – 10.59.136.5910.59.136.59
6110.59.136.60/3210.59.136.60 – 10.59.136.6010.59.136.60
6210.59.136.61/3210.59.136.61 – 10.59.136.6110.59.136.61
6310.59.136.62/3210.59.136.62 – 10.59.136.6210.59.136.62
6410.59.136.63/3210.59.136.63 – 10.59.136.6310.59.136.63
6510.59.136.64/3210.59.136.64 – 10.59.136.6410.59.136.64
6610.59.136.65/3210.59.136.65 – 10.59.136.6510.59.136.65
6710.59.136.66/3210.59.136.66 – 10.59.136.6610.59.136.66
6810.59.136.67/3210.59.136.67 – 10.59.136.6710.59.136.67
6910.59.136.68/3210.59.136.68 – 10.59.136.6810.59.136.68
7010.59.136.69/3210.59.136.69 – 10.59.136.6910.59.136.69
7110.59.136.70/3210.59.136.70 – 10.59.136.7010.59.136.70
7210.59.136.71/3210.59.136.71 – 10.59.136.7110.59.136.71
7310.59.136.72/3210.59.136.72 – 10.59.136.7210.59.136.72
7410.59.136.73/3210.59.136.73 – 10.59.136.7310.59.136.73
7510.59.136.74/3210.59.136.74 – 10.59.136.7410.59.136.74
7610.59.136.75/3210.59.136.75 – 10.59.136.7510.59.136.75
7710.59.136.76/3210.59.136.76 – 10.59.136.7610.59.136.76
7810.59.136.77/3210.59.136.77 – 10.59.136.7710.59.136.77
7910.59.136.78/3210.59.136.78 – 10.59.136.7810.59.136.78
8010.59.136.79/3210.59.136.79 – 10.59.136.7910.59.136.79
8110.59.136.80/3210.59.136.80 – 10.59.136.8010.59.136.80
8210.59.136.81/3210.59.136.81 – 10.59.136.8110.59.136.81
8310.59.136.82/3210.59.136.82 – 10.59.136.8210.59.136.82
8410.59.136.83/3210.59.136.83 – 10.59.136.8310.59.136.83
8510.59.136.84/3210.59.136.84 – 10.59.136.8410.59.136.84
8610.59.136.85/3210.59.136.85 – 10.59.136.8510.59.136.85
8710.59.136.86/3210.59.136.86 – 10.59.136.8610.59.136.86
8810.59.136.87/3210.59.136.87 – 10.59.136.8710.59.136.87
8910.59.136.88/3210.59.136.88 – 10.59.136.8810.59.136.88
9010.59.136.89/3210.59.136.89 – 10.59.136.8910.59.136.89
9110.59.136.90/3210.59.136.90 – 10.59.136.9010.59.136.90
9210.59.136.91/3210.59.136.91 – 10.59.136.9110.59.136.91
9310.59.136.92/3210.59.136.92 – 10.59.136.9210.59.136.92
9410.59.136.93/3210.59.136.93 – 10.59.136.9310.59.136.93
9510.59.136.94/3210.59.136.94 – 10.59.136.9410.59.136.94
9610.59.136.95/3210.59.136.95 – 10.59.136.9510.59.136.95
9710.59.136.96/3210.59.136.96 – 10.59.136.9610.59.136.96
9810.59.136.97/3210.59.136.97 – 10.59.136.9710.59.136.97
9910.59.136.98/3210.59.136.98 – 10.59.136.9810.59.136.98
10010.59.136.99/3210.59.136.99 – 10.59.136.9910.59.136.99
10110.59.136.100/3210.59.136.100 – 10.59.136.10010.59.136.100
10210.59.136.101/3210.59.136.101 – 10.59.136.10110.59.136.101
10310.59.136.102/3210.59.136.102 – 10.59.136.10210.59.136.102
10410.59.136.103/3210.59.136.103 – 10.59.136.10310.59.136.103
10510.59.136.104/3210.59.136.104 – 10.59.136.10410.59.136.104
10610.59.136.105/3210.59.136.105 – 10.59.136.10510.59.136.105
10710.59.136.106/3210.59.136.106 – 10.59.136.10610.59.136.106
10810.59.136.107/3210.59.136.107 – 10.59.136.10710.59.136.107
10910.59.136.108/3210.59.136.108 – 10.59.136.10810.59.136.108
11010.59.136.109/3210.59.136.109 – 10.59.136.10910.59.136.109
11110.59.136.110/3210.59.136.110 – 10.59.136.11010.59.136.110
11210.59.136.111/3210.59.136.111 – 10.59.136.11110.59.136.111
11310.59.136.112/3210.59.136.112 – 10.59.136.11210.59.136.112
11410.59.136.113/3210.59.136.113 – 10.59.136.11310.59.136.113
11510.59.136.114/3210.59.136.114 – 10.59.136.11410.59.136.114
11610.59.136.115/3210.59.136.115 – 10.59.136.11510.59.136.115
11710.59.136.116/3210.59.136.116 – 10.59.136.11610.59.136.116
11810.59.136.117/3210.59.136.117 – 10.59.136.11710.59.136.117
11910.59.136.118/3210.59.136.118 – 10.59.136.11810.59.136.118
12010.59.136.119/3210.59.136.119 – 10.59.136.11910.59.136.119
12110.59.136.120/3210.59.136.120 – 10.59.136.12010.59.136.120
12210.59.136.121/3210.59.136.121 – 10.59.136.12110.59.136.121
12310.59.136.122/3210.59.136.122 – 10.59.136.12210.59.136.122
12410.59.136.123/3210.59.136.123 – 10.59.136.12310.59.136.123
12510.59.136.124/3210.59.136.124 – 10.59.136.12410.59.136.124
12610.59.136.125/3210.59.136.125 – 10.59.136.12510.59.136.125
12710.59.136.126/3210.59.136.126 – 10.59.136.12610.59.136.126
12810.59.136.127/3210.59.136.127 – 10.59.136.12710.59.136.127
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 →