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)10.78.83.0/25
network10.78.83.0/25
broadcast10.78.83.127
first host10.78.83.1
last host10.78.83.126
subnet mask255.255.255.128
wildcard0.0.0.127
addresses128
usable hosts126
classA
ipcalc 10.78.83.0/25
address00001010.01001110.01010011.00000000
subnet mask11111111.11111111.11111111.10000000
network00001010.01001110.01010011.00000000
broadcast00001010.01001110.01010011.01111111
green = network part, grey = host part
hex0x0a4e5300
decimal172905216
reverse dns0.83.78.10.in-addr.arpa
ipv4-mapped::ffff:a4e:5300

/25 split into /32 · 128 subnets

close ×
#networkhost rangebroadcast
110.78.83.0/3210.78.83.0 – 10.78.83.010.78.83.0
210.78.83.1/3210.78.83.1 – 10.78.83.110.78.83.1
310.78.83.2/3210.78.83.2 – 10.78.83.210.78.83.2
410.78.83.3/3210.78.83.3 – 10.78.83.310.78.83.3
510.78.83.4/3210.78.83.4 – 10.78.83.410.78.83.4
610.78.83.5/3210.78.83.5 – 10.78.83.510.78.83.5
710.78.83.6/3210.78.83.6 – 10.78.83.610.78.83.6
810.78.83.7/3210.78.83.7 – 10.78.83.710.78.83.7
910.78.83.8/3210.78.83.8 – 10.78.83.810.78.83.8
1010.78.83.9/3210.78.83.9 – 10.78.83.910.78.83.9
1110.78.83.10/3210.78.83.10 – 10.78.83.1010.78.83.10
1210.78.83.11/3210.78.83.11 – 10.78.83.1110.78.83.11
1310.78.83.12/3210.78.83.12 – 10.78.83.1210.78.83.12
1410.78.83.13/3210.78.83.13 – 10.78.83.1310.78.83.13
1510.78.83.14/3210.78.83.14 – 10.78.83.1410.78.83.14
1610.78.83.15/3210.78.83.15 – 10.78.83.1510.78.83.15
1710.78.83.16/3210.78.83.16 – 10.78.83.1610.78.83.16
1810.78.83.17/3210.78.83.17 – 10.78.83.1710.78.83.17
1910.78.83.18/3210.78.83.18 – 10.78.83.1810.78.83.18
2010.78.83.19/3210.78.83.19 – 10.78.83.1910.78.83.19
2110.78.83.20/3210.78.83.20 – 10.78.83.2010.78.83.20
2210.78.83.21/3210.78.83.21 – 10.78.83.2110.78.83.21
2310.78.83.22/3210.78.83.22 – 10.78.83.2210.78.83.22
2410.78.83.23/3210.78.83.23 – 10.78.83.2310.78.83.23
2510.78.83.24/3210.78.83.24 – 10.78.83.2410.78.83.24
2610.78.83.25/3210.78.83.25 – 10.78.83.2510.78.83.25
2710.78.83.26/3210.78.83.26 – 10.78.83.2610.78.83.26
2810.78.83.27/3210.78.83.27 – 10.78.83.2710.78.83.27
2910.78.83.28/3210.78.83.28 – 10.78.83.2810.78.83.28
3010.78.83.29/3210.78.83.29 – 10.78.83.2910.78.83.29
3110.78.83.30/3210.78.83.30 – 10.78.83.3010.78.83.30
3210.78.83.31/3210.78.83.31 – 10.78.83.3110.78.83.31
3310.78.83.32/3210.78.83.32 – 10.78.83.3210.78.83.32
3410.78.83.33/3210.78.83.33 – 10.78.83.3310.78.83.33
3510.78.83.34/3210.78.83.34 – 10.78.83.3410.78.83.34
3610.78.83.35/3210.78.83.35 – 10.78.83.3510.78.83.35
3710.78.83.36/3210.78.83.36 – 10.78.83.3610.78.83.36
3810.78.83.37/3210.78.83.37 – 10.78.83.3710.78.83.37
3910.78.83.38/3210.78.83.38 – 10.78.83.3810.78.83.38
4010.78.83.39/3210.78.83.39 – 10.78.83.3910.78.83.39
4110.78.83.40/3210.78.83.40 – 10.78.83.4010.78.83.40
4210.78.83.41/3210.78.83.41 – 10.78.83.4110.78.83.41
4310.78.83.42/3210.78.83.42 – 10.78.83.4210.78.83.42
4410.78.83.43/3210.78.83.43 – 10.78.83.4310.78.83.43
4510.78.83.44/3210.78.83.44 – 10.78.83.4410.78.83.44
4610.78.83.45/3210.78.83.45 – 10.78.83.4510.78.83.45
4710.78.83.46/3210.78.83.46 – 10.78.83.4610.78.83.46
4810.78.83.47/3210.78.83.47 – 10.78.83.4710.78.83.47
4910.78.83.48/3210.78.83.48 – 10.78.83.4810.78.83.48
5010.78.83.49/3210.78.83.49 – 10.78.83.4910.78.83.49
5110.78.83.50/3210.78.83.50 – 10.78.83.5010.78.83.50
5210.78.83.51/3210.78.83.51 – 10.78.83.5110.78.83.51
5310.78.83.52/3210.78.83.52 – 10.78.83.5210.78.83.52
5410.78.83.53/3210.78.83.53 – 10.78.83.5310.78.83.53
5510.78.83.54/3210.78.83.54 – 10.78.83.5410.78.83.54
5610.78.83.55/3210.78.83.55 – 10.78.83.5510.78.83.55
5710.78.83.56/3210.78.83.56 – 10.78.83.5610.78.83.56
5810.78.83.57/3210.78.83.57 – 10.78.83.5710.78.83.57
5910.78.83.58/3210.78.83.58 – 10.78.83.5810.78.83.58
6010.78.83.59/3210.78.83.59 – 10.78.83.5910.78.83.59
6110.78.83.60/3210.78.83.60 – 10.78.83.6010.78.83.60
6210.78.83.61/3210.78.83.61 – 10.78.83.6110.78.83.61
6310.78.83.62/3210.78.83.62 – 10.78.83.6210.78.83.62
6410.78.83.63/3210.78.83.63 – 10.78.83.6310.78.83.63
6510.78.83.64/3210.78.83.64 – 10.78.83.6410.78.83.64
6610.78.83.65/3210.78.83.65 – 10.78.83.6510.78.83.65
6710.78.83.66/3210.78.83.66 – 10.78.83.6610.78.83.66
6810.78.83.67/3210.78.83.67 – 10.78.83.6710.78.83.67
6910.78.83.68/3210.78.83.68 – 10.78.83.6810.78.83.68
7010.78.83.69/3210.78.83.69 – 10.78.83.6910.78.83.69
7110.78.83.70/3210.78.83.70 – 10.78.83.7010.78.83.70
7210.78.83.71/3210.78.83.71 – 10.78.83.7110.78.83.71
7310.78.83.72/3210.78.83.72 – 10.78.83.7210.78.83.72
7410.78.83.73/3210.78.83.73 – 10.78.83.7310.78.83.73
7510.78.83.74/3210.78.83.74 – 10.78.83.7410.78.83.74
7610.78.83.75/3210.78.83.75 – 10.78.83.7510.78.83.75
7710.78.83.76/3210.78.83.76 – 10.78.83.7610.78.83.76
7810.78.83.77/3210.78.83.77 – 10.78.83.7710.78.83.77
7910.78.83.78/3210.78.83.78 – 10.78.83.7810.78.83.78
8010.78.83.79/3210.78.83.79 – 10.78.83.7910.78.83.79
8110.78.83.80/3210.78.83.80 – 10.78.83.8010.78.83.80
8210.78.83.81/3210.78.83.81 – 10.78.83.8110.78.83.81
8310.78.83.82/3210.78.83.82 – 10.78.83.8210.78.83.82
8410.78.83.83/3210.78.83.83 – 10.78.83.8310.78.83.83
8510.78.83.84/3210.78.83.84 – 10.78.83.8410.78.83.84
8610.78.83.85/3210.78.83.85 – 10.78.83.8510.78.83.85
8710.78.83.86/3210.78.83.86 – 10.78.83.8610.78.83.86
8810.78.83.87/3210.78.83.87 – 10.78.83.8710.78.83.87
8910.78.83.88/3210.78.83.88 – 10.78.83.8810.78.83.88
9010.78.83.89/3210.78.83.89 – 10.78.83.8910.78.83.89
9110.78.83.90/3210.78.83.90 – 10.78.83.9010.78.83.90
9210.78.83.91/3210.78.83.91 – 10.78.83.9110.78.83.91
9310.78.83.92/3210.78.83.92 – 10.78.83.9210.78.83.92
9410.78.83.93/3210.78.83.93 – 10.78.83.9310.78.83.93
9510.78.83.94/3210.78.83.94 – 10.78.83.9410.78.83.94
9610.78.83.95/3210.78.83.95 – 10.78.83.9510.78.83.95
9710.78.83.96/3210.78.83.96 – 10.78.83.9610.78.83.96
9810.78.83.97/3210.78.83.97 – 10.78.83.9710.78.83.97
9910.78.83.98/3210.78.83.98 – 10.78.83.9810.78.83.98
10010.78.83.99/3210.78.83.99 – 10.78.83.9910.78.83.99
10110.78.83.100/3210.78.83.100 – 10.78.83.10010.78.83.100
10210.78.83.101/3210.78.83.101 – 10.78.83.10110.78.83.101
10310.78.83.102/3210.78.83.102 – 10.78.83.10210.78.83.102
10410.78.83.103/3210.78.83.103 – 10.78.83.10310.78.83.103
10510.78.83.104/3210.78.83.104 – 10.78.83.10410.78.83.104
10610.78.83.105/3210.78.83.105 – 10.78.83.10510.78.83.105
10710.78.83.106/3210.78.83.106 – 10.78.83.10610.78.83.106
10810.78.83.107/3210.78.83.107 – 10.78.83.10710.78.83.107
10910.78.83.108/3210.78.83.108 – 10.78.83.10810.78.83.108
11010.78.83.109/3210.78.83.109 – 10.78.83.10910.78.83.109
11110.78.83.110/3210.78.83.110 – 10.78.83.11010.78.83.110
11210.78.83.111/3210.78.83.111 – 10.78.83.11110.78.83.111
11310.78.83.112/3210.78.83.112 – 10.78.83.11210.78.83.112
11410.78.83.113/3210.78.83.113 – 10.78.83.11310.78.83.113
11510.78.83.114/3210.78.83.114 – 10.78.83.11410.78.83.114
11610.78.83.115/3210.78.83.115 – 10.78.83.11510.78.83.115
11710.78.83.116/3210.78.83.116 – 10.78.83.11610.78.83.116
11810.78.83.117/3210.78.83.117 – 10.78.83.11710.78.83.117
11910.78.83.118/3210.78.83.118 – 10.78.83.11810.78.83.118
12010.78.83.119/3210.78.83.119 – 10.78.83.11910.78.83.119
12110.78.83.120/3210.78.83.120 – 10.78.83.12010.78.83.120
12210.78.83.121/3210.78.83.121 – 10.78.83.12110.78.83.121
12310.78.83.122/3210.78.83.122 – 10.78.83.12210.78.83.122
12410.78.83.123/3210.78.83.123 – 10.78.83.12310.78.83.123
12510.78.83.124/3210.78.83.124 – 10.78.83.12410.78.83.124
12610.78.83.125/3210.78.83.125 – 10.78.83.12510.78.83.125
12710.78.83.126/3210.78.83.126 – 10.78.83.12610.78.83.126
12810.78.83.127/3210.78.83.127 – 10.78.83.12710.78.83.127
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 →