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)10.78.94.0/25
network10.78.94.0/25
broadcast10.78.94.127
first host10.78.94.1
last host10.78.94.126
subnet mask255.255.255.128
wildcard0.0.0.127
addresses128
usable hosts126
classA
ipcalc 10.78.94.0/25
address00001010.01001110.01011110.00000000
subnet mask11111111.11111111.11111111.10000000
network00001010.01001110.01011110.00000000
broadcast00001010.01001110.01011110.01111111
green = network part, grey = host part
hex0x0a4e5e00
decimal172908032
reverse dns0.94.78.10.in-addr.arpa
ipv4-mapped::ffff:a4e:5e00

/25 split into /32 · 128 subnets

close ×
#networkhost rangebroadcast
110.78.94.0/3210.78.94.0 – 10.78.94.010.78.94.0
210.78.94.1/3210.78.94.1 – 10.78.94.110.78.94.1
310.78.94.2/3210.78.94.2 – 10.78.94.210.78.94.2
410.78.94.3/3210.78.94.3 – 10.78.94.310.78.94.3
510.78.94.4/3210.78.94.4 – 10.78.94.410.78.94.4
610.78.94.5/3210.78.94.5 – 10.78.94.510.78.94.5
710.78.94.6/3210.78.94.6 – 10.78.94.610.78.94.6
810.78.94.7/3210.78.94.7 – 10.78.94.710.78.94.7
910.78.94.8/3210.78.94.8 – 10.78.94.810.78.94.8
1010.78.94.9/3210.78.94.9 – 10.78.94.910.78.94.9
1110.78.94.10/3210.78.94.10 – 10.78.94.1010.78.94.10
1210.78.94.11/3210.78.94.11 – 10.78.94.1110.78.94.11
1310.78.94.12/3210.78.94.12 – 10.78.94.1210.78.94.12
1410.78.94.13/3210.78.94.13 – 10.78.94.1310.78.94.13
1510.78.94.14/3210.78.94.14 – 10.78.94.1410.78.94.14
1610.78.94.15/3210.78.94.15 – 10.78.94.1510.78.94.15
1710.78.94.16/3210.78.94.16 – 10.78.94.1610.78.94.16
1810.78.94.17/3210.78.94.17 – 10.78.94.1710.78.94.17
1910.78.94.18/3210.78.94.18 – 10.78.94.1810.78.94.18
2010.78.94.19/3210.78.94.19 – 10.78.94.1910.78.94.19
2110.78.94.20/3210.78.94.20 – 10.78.94.2010.78.94.20
2210.78.94.21/3210.78.94.21 – 10.78.94.2110.78.94.21
2310.78.94.22/3210.78.94.22 – 10.78.94.2210.78.94.22
2410.78.94.23/3210.78.94.23 – 10.78.94.2310.78.94.23
2510.78.94.24/3210.78.94.24 – 10.78.94.2410.78.94.24
2610.78.94.25/3210.78.94.25 – 10.78.94.2510.78.94.25
2710.78.94.26/3210.78.94.26 – 10.78.94.2610.78.94.26
2810.78.94.27/3210.78.94.27 – 10.78.94.2710.78.94.27
2910.78.94.28/3210.78.94.28 – 10.78.94.2810.78.94.28
3010.78.94.29/3210.78.94.29 – 10.78.94.2910.78.94.29
3110.78.94.30/3210.78.94.30 – 10.78.94.3010.78.94.30
3210.78.94.31/3210.78.94.31 – 10.78.94.3110.78.94.31
3310.78.94.32/3210.78.94.32 – 10.78.94.3210.78.94.32
3410.78.94.33/3210.78.94.33 – 10.78.94.3310.78.94.33
3510.78.94.34/3210.78.94.34 – 10.78.94.3410.78.94.34
3610.78.94.35/3210.78.94.35 – 10.78.94.3510.78.94.35
3710.78.94.36/3210.78.94.36 – 10.78.94.3610.78.94.36
3810.78.94.37/3210.78.94.37 – 10.78.94.3710.78.94.37
3910.78.94.38/3210.78.94.38 – 10.78.94.3810.78.94.38
4010.78.94.39/3210.78.94.39 – 10.78.94.3910.78.94.39
4110.78.94.40/3210.78.94.40 – 10.78.94.4010.78.94.40
4210.78.94.41/3210.78.94.41 – 10.78.94.4110.78.94.41
4310.78.94.42/3210.78.94.42 – 10.78.94.4210.78.94.42
4410.78.94.43/3210.78.94.43 – 10.78.94.4310.78.94.43
4510.78.94.44/3210.78.94.44 – 10.78.94.4410.78.94.44
4610.78.94.45/3210.78.94.45 – 10.78.94.4510.78.94.45
4710.78.94.46/3210.78.94.46 – 10.78.94.4610.78.94.46
4810.78.94.47/3210.78.94.47 – 10.78.94.4710.78.94.47
4910.78.94.48/3210.78.94.48 – 10.78.94.4810.78.94.48
5010.78.94.49/3210.78.94.49 – 10.78.94.4910.78.94.49
5110.78.94.50/3210.78.94.50 – 10.78.94.5010.78.94.50
5210.78.94.51/3210.78.94.51 – 10.78.94.5110.78.94.51
5310.78.94.52/3210.78.94.52 – 10.78.94.5210.78.94.52
5410.78.94.53/3210.78.94.53 – 10.78.94.5310.78.94.53
5510.78.94.54/3210.78.94.54 – 10.78.94.5410.78.94.54
5610.78.94.55/3210.78.94.55 – 10.78.94.5510.78.94.55
5710.78.94.56/3210.78.94.56 – 10.78.94.5610.78.94.56
5810.78.94.57/3210.78.94.57 – 10.78.94.5710.78.94.57
5910.78.94.58/3210.78.94.58 – 10.78.94.5810.78.94.58
6010.78.94.59/3210.78.94.59 – 10.78.94.5910.78.94.59
6110.78.94.60/3210.78.94.60 – 10.78.94.6010.78.94.60
6210.78.94.61/3210.78.94.61 – 10.78.94.6110.78.94.61
6310.78.94.62/3210.78.94.62 – 10.78.94.6210.78.94.62
6410.78.94.63/3210.78.94.63 – 10.78.94.6310.78.94.63
6510.78.94.64/3210.78.94.64 – 10.78.94.6410.78.94.64
6610.78.94.65/3210.78.94.65 – 10.78.94.6510.78.94.65
6710.78.94.66/3210.78.94.66 – 10.78.94.6610.78.94.66
6810.78.94.67/3210.78.94.67 – 10.78.94.6710.78.94.67
6910.78.94.68/3210.78.94.68 – 10.78.94.6810.78.94.68
7010.78.94.69/3210.78.94.69 – 10.78.94.6910.78.94.69
7110.78.94.70/3210.78.94.70 – 10.78.94.7010.78.94.70
7210.78.94.71/3210.78.94.71 – 10.78.94.7110.78.94.71
7310.78.94.72/3210.78.94.72 – 10.78.94.7210.78.94.72
7410.78.94.73/3210.78.94.73 – 10.78.94.7310.78.94.73
7510.78.94.74/3210.78.94.74 – 10.78.94.7410.78.94.74
7610.78.94.75/3210.78.94.75 – 10.78.94.7510.78.94.75
7710.78.94.76/3210.78.94.76 – 10.78.94.7610.78.94.76
7810.78.94.77/3210.78.94.77 – 10.78.94.7710.78.94.77
7910.78.94.78/3210.78.94.78 – 10.78.94.7810.78.94.78
8010.78.94.79/3210.78.94.79 – 10.78.94.7910.78.94.79
8110.78.94.80/3210.78.94.80 – 10.78.94.8010.78.94.80
8210.78.94.81/3210.78.94.81 – 10.78.94.8110.78.94.81
8310.78.94.82/3210.78.94.82 – 10.78.94.8210.78.94.82
8410.78.94.83/3210.78.94.83 – 10.78.94.8310.78.94.83
8510.78.94.84/3210.78.94.84 – 10.78.94.8410.78.94.84
8610.78.94.85/3210.78.94.85 – 10.78.94.8510.78.94.85
8710.78.94.86/3210.78.94.86 – 10.78.94.8610.78.94.86
8810.78.94.87/3210.78.94.87 – 10.78.94.8710.78.94.87
8910.78.94.88/3210.78.94.88 – 10.78.94.8810.78.94.88
9010.78.94.89/3210.78.94.89 – 10.78.94.8910.78.94.89
9110.78.94.90/3210.78.94.90 – 10.78.94.9010.78.94.90
9210.78.94.91/3210.78.94.91 – 10.78.94.9110.78.94.91
9310.78.94.92/3210.78.94.92 – 10.78.94.9210.78.94.92
9410.78.94.93/3210.78.94.93 – 10.78.94.9310.78.94.93
9510.78.94.94/3210.78.94.94 – 10.78.94.9410.78.94.94
9610.78.94.95/3210.78.94.95 – 10.78.94.9510.78.94.95
9710.78.94.96/3210.78.94.96 – 10.78.94.9610.78.94.96
9810.78.94.97/3210.78.94.97 – 10.78.94.9710.78.94.97
9910.78.94.98/3210.78.94.98 – 10.78.94.9810.78.94.98
10010.78.94.99/3210.78.94.99 – 10.78.94.9910.78.94.99
10110.78.94.100/3210.78.94.100 – 10.78.94.10010.78.94.100
10210.78.94.101/3210.78.94.101 – 10.78.94.10110.78.94.101
10310.78.94.102/3210.78.94.102 – 10.78.94.10210.78.94.102
10410.78.94.103/3210.78.94.103 – 10.78.94.10310.78.94.103
10510.78.94.104/3210.78.94.104 – 10.78.94.10410.78.94.104
10610.78.94.105/3210.78.94.105 – 10.78.94.10510.78.94.105
10710.78.94.106/3210.78.94.106 – 10.78.94.10610.78.94.106
10810.78.94.107/3210.78.94.107 – 10.78.94.10710.78.94.107
10910.78.94.108/3210.78.94.108 – 10.78.94.10810.78.94.108
11010.78.94.109/3210.78.94.109 – 10.78.94.10910.78.94.109
11110.78.94.110/3210.78.94.110 – 10.78.94.11010.78.94.110
11210.78.94.111/3210.78.94.111 – 10.78.94.11110.78.94.111
11310.78.94.112/3210.78.94.112 – 10.78.94.11210.78.94.112
11410.78.94.113/3210.78.94.113 – 10.78.94.11310.78.94.113
11510.78.94.114/3210.78.94.114 – 10.78.94.11410.78.94.114
11610.78.94.115/3210.78.94.115 – 10.78.94.11510.78.94.115
11710.78.94.116/3210.78.94.116 – 10.78.94.11610.78.94.116
11810.78.94.117/3210.78.94.117 – 10.78.94.11710.78.94.117
11910.78.94.118/3210.78.94.118 – 10.78.94.11810.78.94.118
12010.78.94.119/3210.78.94.119 – 10.78.94.11910.78.94.119
12110.78.94.120/3210.78.94.120 – 10.78.94.12010.78.94.120
12210.78.94.121/3210.78.94.121 – 10.78.94.12110.78.94.121
12310.78.94.122/3210.78.94.122 – 10.78.94.12210.78.94.122
12410.78.94.123/3210.78.94.123 – 10.78.94.12310.78.94.123
12510.78.94.124/3210.78.94.124 – 10.78.94.12410.78.94.124
12610.78.94.125/3210.78.94.125 – 10.78.94.12510.78.94.125
12710.78.94.126/3210.78.94.126 – 10.78.94.12610.78.94.126
12810.78.94.127/3210.78.94.127 – 10.78.94.12710.78.94.127
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 →