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)10.78.153.0/25
network10.78.153.0/25
broadcast10.78.153.127
first host10.78.153.1
last host10.78.153.126
subnet mask255.255.255.128
wildcard0.0.0.127
addresses128
usable hosts126
classA
ipcalc 10.78.153.0/25
address00001010.01001110.10011001.00000000
subnet mask11111111.11111111.11111111.10000000
network00001010.01001110.10011001.00000000
broadcast00001010.01001110.10011001.01111111
green = network part, grey = host part
hex0x0a4e9900
decimal172923136
reverse dns0.153.78.10.in-addr.arpa
ipv4-mapped::ffff:a4e:9900

/25 split into /32 · 128 subnets

close ×
#networkhost rangebroadcast
110.78.153.0/3210.78.153.0 – 10.78.153.010.78.153.0
210.78.153.1/3210.78.153.1 – 10.78.153.110.78.153.1
310.78.153.2/3210.78.153.2 – 10.78.153.210.78.153.2
410.78.153.3/3210.78.153.3 – 10.78.153.310.78.153.3
510.78.153.4/3210.78.153.4 – 10.78.153.410.78.153.4
610.78.153.5/3210.78.153.5 – 10.78.153.510.78.153.5
710.78.153.6/3210.78.153.6 – 10.78.153.610.78.153.6
810.78.153.7/3210.78.153.7 – 10.78.153.710.78.153.7
910.78.153.8/3210.78.153.8 – 10.78.153.810.78.153.8
1010.78.153.9/3210.78.153.9 – 10.78.153.910.78.153.9
1110.78.153.10/3210.78.153.10 – 10.78.153.1010.78.153.10
1210.78.153.11/3210.78.153.11 – 10.78.153.1110.78.153.11
1310.78.153.12/3210.78.153.12 – 10.78.153.1210.78.153.12
1410.78.153.13/3210.78.153.13 – 10.78.153.1310.78.153.13
1510.78.153.14/3210.78.153.14 – 10.78.153.1410.78.153.14
1610.78.153.15/3210.78.153.15 – 10.78.153.1510.78.153.15
1710.78.153.16/3210.78.153.16 – 10.78.153.1610.78.153.16
1810.78.153.17/3210.78.153.17 – 10.78.153.1710.78.153.17
1910.78.153.18/3210.78.153.18 – 10.78.153.1810.78.153.18
2010.78.153.19/3210.78.153.19 – 10.78.153.1910.78.153.19
2110.78.153.20/3210.78.153.20 – 10.78.153.2010.78.153.20
2210.78.153.21/3210.78.153.21 – 10.78.153.2110.78.153.21
2310.78.153.22/3210.78.153.22 – 10.78.153.2210.78.153.22
2410.78.153.23/3210.78.153.23 – 10.78.153.2310.78.153.23
2510.78.153.24/3210.78.153.24 – 10.78.153.2410.78.153.24
2610.78.153.25/3210.78.153.25 – 10.78.153.2510.78.153.25
2710.78.153.26/3210.78.153.26 – 10.78.153.2610.78.153.26
2810.78.153.27/3210.78.153.27 – 10.78.153.2710.78.153.27
2910.78.153.28/3210.78.153.28 – 10.78.153.2810.78.153.28
3010.78.153.29/3210.78.153.29 – 10.78.153.2910.78.153.29
3110.78.153.30/3210.78.153.30 – 10.78.153.3010.78.153.30
3210.78.153.31/3210.78.153.31 – 10.78.153.3110.78.153.31
3310.78.153.32/3210.78.153.32 – 10.78.153.3210.78.153.32
3410.78.153.33/3210.78.153.33 – 10.78.153.3310.78.153.33
3510.78.153.34/3210.78.153.34 – 10.78.153.3410.78.153.34
3610.78.153.35/3210.78.153.35 – 10.78.153.3510.78.153.35
3710.78.153.36/3210.78.153.36 – 10.78.153.3610.78.153.36
3810.78.153.37/3210.78.153.37 – 10.78.153.3710.78.153.37
3910.78.153.38/3210.78.153.38 – 10.78.153.3810.78.153.38
4010.78.153.39/3210.78.153.39 – 10.78.153.3910.78.153.39
4110.78.153.40/3210.78.153.40 – 10.78.153.4010.78.153.40
4210.78.153.41/3210.78.153.41 – 10.78.153.4110.78.153.41
4310.78.153.42/3210.78.153.42 – 10.78.153.4210.78.153.42
4410.78.153.43/3210.78.153.43 – 10.78.153.4310.78.153.43
4510.78.153.44/3210.78.153.44 – 10.78.153.4410.78.153.44
4610.78.153.45/3210.78.153.45 – 10.78.153.4510.78.153.45
4710.78.153.46/3210.78.153.46 – 10.78.153.4610.78.153.46
4810.78.153.47/3210.78.153.47 – 10.78.153.4710.78.153.47
4910.78.153.48/3210.78.153.48 – 10.78.153.4810.78.153.48
5010.78.153.49/3210.78.153.49 – 10.78.153.4910.78.153.49
5110.78.153.50/3210.78.153.50 – 10.78.153.5010.78.153.50
5210.78.153.51/3210.78.153.51 – 10.78.153.5110.78.153.51
5310.78.153.52/3210.78.153.52 – 10.78.153.5210.78.153.52
5410.78.153.53/3210.78.153.53 – 10.78.153.5310.78.153.53
5510.78.153.54/3210.78.153.54 – 10.78.153.5410.78.153.54
5610.78.153.55/3210.78.153.55 – 10.78.153.5510.78.153.55
5710.78.153.56/3210.78.153.56 – 10.78.153.5610.78.153.56
5810.78.153.57/3210.78.153.57 – 10.78.153.5710.78.153.57
5910.78.153.58/3210.78.153.58 – 10.78.153.5810.78.153.58
6010.78.153.59/3210.78.153.59 – 10.78.153.5910.78.153.59
6110.78.153.60/3210.78.153.60 – 10.78.153.6010.78.153.60
6210.78.153.61/3210.78.153.61 – 10.78.153.6110.78.153.61
6310.78.153.62/3210.78.153.62 – 10.78.153.6210.78.153.62
6410.78.153.63/3210.78.153.63 – 10.78.153.6310.78.153.63
6510.78.153.64/3210.78.153.64 – 10.78.153.6410.78.153.64
6610.78.153.65/3210.78.153.65 – 10.78.153.6510.78.153.65
6710.78.153.66/3210.78.153.66 – 10.78.153.6610.78.153.66
6810.78.153.67/3210.78.153.67 – 10.78.153.6710.78.153.67
6910.78.153.68/3210.78.153.68 – 10.78.153.6810.78.153.68
7010.78.153.69/3210.78.153.69 – 10.78.153.6910.78.153.69
7110.78.153.70/3210.78.153.70 – 10.78.153.7010.78.153.70
7210.78.153.71/3210.78.153.71 – 10.78.153.7110.78.153.71
7310.78.153.72/3210.78.153.72 – 10.78.153.7210.78.153.72
7410.78.153.73/3210.78.153.73 – 10.78.153.7310.78.153.73
7510.78.153.74/3210.78.153.74 – 10.78.153.7410.78.153.74
7610.78.153.75/3210.78.153.75 – 10.78.153.7510.78.153.75
7710.78.153.76/3210.78.153.76 – 10.78.153.7610.78.153.76
7810.78.153.77/3210.78.153.77 – 10.78.153.7710.78.153.77
7910.78.153.78/3210.78.153.78 – 10.78.153.7810.78.153.78
8010.78.153.79/3210.78.153.79 – 10.78.153.7910.78.153.79
8110.78.153.80/3210.78.153.80 – 10.78.153.8010.78.153.80
8210.78.153.81/3210.78.153.81 – 10.78.153.8110.78.153.81
8310.78.153.82/3210.78.153.82 – 10.78.153.8210.78.153.82
8410.78.153.83/3210.78.153.83 – 10.78.153.8310.78.153.83
8510.78.153.84/3210.78.153.84 – 10.78.153.8410.78.153.84
8610.78.153.85/3210.78.153.85 – 10.78.153.8510.78.153.85
8710.78.153.86/3210.78.153.86 – 10.78.153.8610.78.153.86
8810.78.153.87/3210.78.153.87 – 10.78.153.8710.78.153.87
8910.78.153.88/3210.78.153.88 – 10.78.153.8810.78.153.88
9010.78.153.89/3210.78.153.89 – 10.78.153.8910.78.153.89
9110.78.153.90/3210.78.153.90 – 10.78.153.9010.78.153.90
9210.78.153.91/3210.78.153.91 – 10.78.153.9110.78.153.91
9310.78.153.92/3210.78.153.92 – 10.78.153.9210.78.153.92
9410.78.153.93/3210.78.153.93 – 10.78.153.9310.78.153.93
9510.78.153.94/3210.78.153.94 – 10.78.153.9410.78.153.94
9610.78.153.95/3210.78.153.95 – 10.78.153.9510.78.153.95
9710.78.153.96/3210.78.153.96 – 10.78.153.9610.78.153.96
9810.78.153.97/3210.78.153.97 – 10.78.153.9710.78.153.97
9910.78.153.98/3210.78.153.98 – 10.78.153.9810.78.153.98
10010.78.153.99/3210.78.153.99 – 10.78.153.9910.78.153.99
10110.78.153.100/3210.78.153.100 – 10.78.153.10010.78.153.100
10210.78.153.101/3210.78.153.101 – 10.78.153.10110.78.153.101
10310.78.153.102/3210.78.153.102 – 10.78.153.10210.78.153.102
10410.78.153.103/3210.78.153.103 – 10.78.153.10310.78.153.103
10510.78.153.104/3210.78.153.104 – 10.78.153.10410.78.153.104
10610.78.153.105/3210.78.153.105 – 10.78.153.10510.78.153.105
10710.78.153.106/3210.78.153.106 – 10.78.153.10610.78.153.106
10810.78.153.107/3210.78.153.107 – 10.78.153.10710.78.153.107
10910.78.153.108/3210.78.153.108 – 10.78.153.10810.78.153.108
11010.78.153.109/3210.78.153.109 – 10.78.153.10910.78.153.109
11110.78.153.110/3210.78.153.110 – 10.78.153.11010.78.153.110
11210.78.153.111/3210.78.153.111 – 10.78.153.11110.78.153.111
11310.78.153.112/3210.78.153.112 – 10.78.153.11210.78.153.112
11410.78.153.113/3210.78.153.113 – 10.78.153.11310.78.153.113
11510.78.153.114/3210.78.153.114 – 10.78.153.11410.78.153.114
11610.78.153.115/3210.78.153.115 – 10.78.153.11510.78.153.115
11710.78.153.116/3210.78.153.116 – 10.78.153.11610.78.153.116
11810.78.153.117/3210.78.153.117 – 10.78.153.11710.78.153.117
11910.78.153.118/3210.78.153.118 – 10.78.153.11810.78.153.118
12010.78.153.119/3210.78.153.119 – 10.78.153.11910.78.153.119
12110.78.153.120/3210.78.153.120 – 10.78.153.12010.78.153.120
12210.78.153.121/3210.78.153.121 – 10.78.153.12110.78.153.121
12310.78.153.122/3210.78.153.122 – 10.78.153.12210.78.153.122
12410.78.153.123/3210.78.153.123 – 10.78.153.12310.78.153.123
12510.78.153.124/3210.78.153.124 – 10.78.153.12410.78.153.124
12610.78.153.125/3210.78.153.125 – 10.78.153.12510.78.153.125
12710.78.153.126/3210.78.153.126 – 10.78.153.12610.78.153.126
12810.78.153.127/3210.78.153.127 – 10.78.153.12710.78.153.127
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 →