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)10.78.196.0/25
network10.78.196.0/25
broadcast10.78.196.127
first host10.78.196.1
last host10.78.196.126
subnet mask255.255.255.128
wildcard0.0.0.127
addresses128
usable hosts126
classA
ipcalc 10.78.196.0/25
address00001010.01001110.11000100.00000000
subnet mask11111111.11111111.11111111.10000000
network00001010.01001110.11000100.00000000
broadcast00001010.01001110.11000100.01111111
green = network part, grey = host part
hex0x0a4ec400
decimal172934144
reverse dns0.196.78.10.in-addr.arpa
ipv4-mapped::ffff:a4e:c400

/25 split into /32 · 128 subnets

close ×
#networkhost rangebroadcast
110.78.196.0/3210.78.196.0 – 10.78.196.010.78.196.0
210.78.196.1/3210.78.196.1 – 10.78.196.110.78.196.1
310.78.196.2/3210.78.196.2 – 10.78.196.210.78.196.2
410.78.196.3/3210.78.196.3 – 10.78.196.310.78.196.3
510.78.196.4/3210.78.196.4 – 10.78.196.410.78.196.4
610.78.196.5/3210.78.196.5 – 10.78.196.510.78.196.5
710.78.196.6/3210.78.196.6 – 10.78.196.610.78.196.6
810.78.196.7/3210.78.196.7 – 10.78.196.710.78.196.7
910.78.196.8/3210.78.196.8 – 10.78.196.810.78.196.8
1010.78.196.9/3210.78.196.9 – 10.78.196.910.78.196.9
1110.78.196.10/3210.78.196.10 – 10.78.196.1010.78.196.10
1210.78.196.11/3210.78.196.11 – 10.78.196.1110.78.196.11
1310.78.196.12/3210.78.196.12 – 10.78.196.1210.78.196.12
1410.78.196.13/3210.78.196.13 – 10.78.196.1310.78.196.13
1510.78.196.14/3210.78.196.14 – 10.78.196.1410.78.196.14
1610.78.196.15/3210.78.196.15 – 10.78.196.1510.78.196.15
1710.78.196.16/3210.78.196.16 – 10.78.196.1610.78.196.16
1810.78.196.17/3210.78.196.17 – 10.78.196.1710.78.196.17
1910.78.196.18/3210.78.196.18 – 10.78.196.1810.78.196.18
2010.78.196.19/3210.78.196.19 – 10.78.196.1910.78.196.19
2110.78.196.20/3210.78.196.20 – 10.78.196.2010.78.196.20
2210.78.196.21/3210.78.196.21 – 10.78.196.2110.78.196.21
2310.78.196.22/3210.78.196.22 – 10.78.196.2210.78.196.22
2410.78.196.23/3210.78.196.23 – 10.78.196.2310.78.196.23
2510.78.196.24/3210.78.196.24 – 10.78.196.2410.78.196.24
2610.78.196.25/3210.78.196.25 – 10.78.196.2510.78.196.25
2710.78.196.26/3210.78.196.26 – 10.78.196.2610.78.196.26
2810.78.196.27/3210.78.196.27 – 10.78.196.2710.78.196.27
2910.78.196.28/3210.78.196.28 – 10.78.196.2810.78.196.28
3010.78.196.29/3210.78.196.29 – 10.78.196.2910.78.196.29
3110.78.196.30/3210.78.196.30 – 10.78.196.3010.78.196.30
3210.78.196.31/3210.78.196.31 – 10.78.196.3110.78.196.31
3310.78.196.32/3210.78.196.32 – 10.78.196.3210.78.196.32
3410.78.196.33/3210.78.196.33 – 10.78.196.3310.78.196.33
3510.78.196.34/3210.78.196.34 – 10.78.196.3410.78.196.34
3610.78.196.35/3210.78.196.35 – 10.78.196.3510.78.196.35
3710.78.196.36/3210.78.196.36 – 10.78.196.3610.78.196.36
3810.78.196.37/3210.78.196.37 – 10.78.196.3710.78.196.37
3910.78.196.38/3210.78.196.38 – 10.78.196.3810.78.196.38
4010.78.196.39/3210.78.196.39 – 10.78.196.3910.78.196.39
4110.78.196.40/3210.78.196.40 – 10.78.196.4010.78.196.40
4210.78.196.41/3210.78.196.41 – 10.78.196.4110.78.196.41
4310.78.196.42/3210.78.196.42 – 10.78.196.4210.78.196.42
4410.78.196.43/3210.78.196.43 – 10.78.196.4310.78.196.43
4510.78.196.44/3210.78.196.44 – 10.78.196.4410.78.196.44
4610.78.196.45/3210.78.196.45 – 10.78.196.4510.78.196.45
4710.78.196.46/3210.78.196.46 – 10.78.196.4610.78.196.46
4810.78.196.47/3210.78.196.47 – 10.78.196.4710.78.196.47
4910.78.196.48/3210.78.196.48 – 10.78.196.4810.78.196.48
5010.78.196.49/3210.78.196.49 – 10.78.196.4910.78.196.49
5110.78.196.50/3210.78.196.50 – 10.78.196.5010.78.196.50
5210.78.196.51/3210.78.196.51 – 10.78.196.5110.78.196.51
5310.78.196.52/3210.78.196.52 – 10.78.196.5210.78.196.52
5410.78.196.53/3210.78.196.53 – 10.78.196.5310.78.196.53
5510.78.196.54/3210.78.196.54 – 10.78.196.5410.78.196.54
5610.78.196.55/3210.78.196.55 – 10.78.196.5510.78.196.55
5710.78.196.56/3210.78.196.56 – 10.78.196.5610.78.196.56
5810.78.196.57/3210.78.196.57 – 10.78.196.5710.78.196.57
5910.78.196.58/3210.78.196.58 – 10.78.196.5810.78.196.58
6010.78.196.59/3210.78.196.59 – 10.78.196.5910.78.196.59
6110.78.196.60/3210.78.196.60 – 10.78.196.6010.78.196.60
6210.78.196.61/3210.78.196.61 – 10.78.196.6110.78.196.61
6310.78.196.62/3210.78.196.62 – 10.78.196.6210.78.196.62
6410.78.196.63/3210.78.196.63 – 10.78.196.6310.78.196.63
6510.78.196.64/3210.78.196.64 – 10.78.196.6410.78.196.64
6610.78.196.65/3210.78.196.65 – 10.78.196.6510.78.196.65
6710.78.196.66/3210.78.196.66 – 10.78.196.6610.78.196.66
6810.78.196.67/3210.78.196.67 – 10.78.196.6710.78.196.67
6910.78.196.68/3210.78.196.68 – 10.78.196.6810.78.196.68
7010.78.196.69/3210.78.196.69 – 10.78.196.6910.78.196.69
7110.78.196.70/3210.78.196.70 – 10.78.196.7010.78.196.70
7210.78.196.71/3210.78.196.71 – 10.78.196.7110.78.196.71
7310.78.196.72/3210.78.196.72 – 10.78.196.7210.78.196.72
7410.78.196.73/3210.78.196.73 – 10.78.196.7310.78.196.73
7510.78.196.74/3210.78.196.74 – 10.78.196.7410.78.196.74
7610.78.196.75/3210.78.196.75 – 10.78.196.7510.78.196.75
7710.78.196.76/3210.78.196.76 – 10.78.196.7610.78.196.76
7810.78.196.77/3210.78.196.77 – 10.78.196.7710.78.196.77
7910.78.196.78/3210.78.196.78 – 10.78.196.7810.78.196.78
8010.78.196.79/3210.78.196.79 – 10.78.196.7910.78.196.79
8110.78.196.80/3210.78.196.80 – 10.78.196.8010.78.196.80
8210.78.196.81/3210.78.196.81 – 10.78.196.8110.78.196.81
8310.78.196.82/3210.78.196.82 – 10.78.196.8210.78.196.82
8410.78.196.83/3210.78.196.83 – 10.78.196.8310.78.196.83
8510.78.196.84/3210.78.196.84 – 10.78.196.8410.78.196.84
8610.78.196.85/3210.78.196.85 – 10.78.196.8510.78.196.85
8710.78.196.86/3210.78.196.86 – 10.78.196.8610.78.196.86
8810.78.196.87/3210.78.196.87 – 10.78.196.8710.78.196.87
8910.78.196.88/3210.78.196.88 – 10.78.196.8810.78.196.88
9010.78.196.89/3210.78.196.89 – 10.78.196.8910.78.196.89
9110.78.196.90/3210.78.196.90 – 10.78.196.9010.78.196.90
9210.78.196.91/3210.78.196.91 – 10.78.196.9110.78.196.91
9310.78.196.92/3210.78.196.92 – 10.78.196.9210.78.196.92
9410.78.196.93/3210.78.196.93 – 10.78.196.9310.78.196.93
9510.78.196.94/3210.78.196.94 – 10.78.196.9410.78.196.94
9610.78.196.95/3210.78.196.95 – 10.78.196.9510.78.196.95
9710.78.196.96/3210.78.196.96 – 10.78.196.9610.78.196.96
9810.78.196.97/3210.78.196.97 – 10.78.196.9710.78.196.97
9910.78.196.98/3210.78.196.98 – 10.78.196.9810.78.196.98
10010.78.196.99/3210.78.196.99 – 10.78.196.9910.78.196.99
10110.78.196.100/3210.78.196.100 – 10.78.196.10010.78.196.100
10210.78.196.101/3210.78.196.101 – 10.78.196.10110.78.196.101
10310.78.196.102/3210.78.196.102 – 10.78.196.10210.78.196.102
10410.78.196.103/3210.78.196.103 – 10.78.196.10310.78.196.103
10510.78.196.104/3210.78.196.104 – 10.78.196.10410.78.196.104
10610.78.196.105/3210.78.196.105 – 10.78.196.10510.78.196.105
10710.78.196.106/3210.78.196.106 – 10.78.196.10610.78.196.106
10810.78.196.107/3210.78.196.107 – 10.78.196.10710.78.196.107
10910.78.196.108/3210.78.196.108 – 10.78.196.10810.78.196.108
11010.78.196.109/3210.78.196.109 – 10.78.196.10910.78.196.109
11110.78.196.110/3210.78.196.110 – 10.78.196.11010.78.196.110
11210.78.196.111/3210.78.196.111 – 10.78.196.11110.78.196.111
11310.78.196.112/3210.78.196.112 – 10.78.196.11210.78.196.112
11410.78.196.113/3210.78.196.113 – 10.78.196.11310.78.196.113
11510.78.196.114/3210.78.196.114 – 10.78.196.11410.78.196.114
11610.78.196.115/3210.78.196.115 – 10.78.196.11510.78.196.115
11710.78.196.116/3210.78.196.116 – 10.78.196.11610.78.196.116
11810.78.196.117/3210.78.196.117 – 10.78.196.11710.78.196.117
11910.78.196.118/3210.78.196.118 – 10.78.196.11810.78.196.118
12010.78.196.119/3210.78.196.119 – 10.78.196.11910.78.196.119
12110.78.196.120/3210.78.196.120 – 10.78.196.12010.78.196.120
12210.78.196.121/3210.78.196.121 – 10.78.196.12110.78.196.121
12310.78.196.122/3210.78.196.122 – 10.78.196.12210.78.196.122
12410.78.196.123/3210.78.196.123 – 10.78.196.12310.78.196.123
12510.78.196.124/3210.78.196.124 – 10.78.196.12410.78.196.124
12610.78.196.125/3210.78.196.125 – 10.78.196.12510.78.196.125
12710.78.196.126/3210.78.196.126 – 10.78.196.12610.78.196.126
12810.78.196.127/3210.78.196.127 – 10.78.196.12710.78.196.127
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 →