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)10.78.89.0/25
network10.78.89.0/25
broadcast10.78.89.127
first host10.78.89.1
last host10.78.89.126
subnet mask255.255.255.128
wildcard0.0.0.127
addresses128
usable hosts126
classA
ipcalc 10.78.89.0/25
address00001010.01001110.01011001.00000000
subnet mask11111111.11111111.11111111.10000000
network00001010.01001110.01011001.00000000
broadcast00001010.01001110.01011001.01111111
green = network part, grey = host part
hex0x0a4e5900
decimal172906752
reverse dns0.89.78.10.in-addr.arpa
ipv4-mapped::ffff:a4e:5900

/25 split into /32 · 128 subnets

close ×
#networkhost rangebroadcast
110.78.89.0/3210.78.89.0 – 10.78.89.010.78.89.0
210.78.89.1/3210.78.89.1 – 10.78.89.110.78.89.1
310.78.89.2/3210.78.89.2 – 10.78.89.210.78.89.2
410.78.89.3/3210.78.89.3 – 10.78.89.310.78.89.3
510.78.89.4/3210.78.89.4 – 10.78.89.410.78.89.4
610.78.89.5/3210.78.89.5 – 10.78.89.510.78.89.5
710.78.89.6/3210.78.89.6 – 10.78.89.610.78.89.6
810.78.89.7/3210.78.89.7 – 10.78.89.710.78.89.7
910.78.89.8/3210.78.89.8 – 10.78.89.810.78.89.8
1010.78.89.9/3210.78.89.9 – 10.78.89.910.78.89.9
1110.78.89.10/3210.78.89.10 – 10.78.89.1010.78.89.10
1210.78.89.11/3210.78.89.11 – 10.78.89.1110.78.89.11
1310.78.89.12/3210.78.89.12 – 10.78.89.1210.78.89.12
1410.78.89.13/3210.78.89.13 – 10.78.89.1310.78.89.13
1510.78.89.14/3210.78.89.14 – 10.78.89.1410.78.89.14
1610.78.89.15/3210.78.89.15 – 10.78.89.1510.78.89.15
1710.78.89.16/3210.78.89.16 – 10.78.89.1610.78.89.16
1810.78.89.17/3210.78.89.17 – 10.78.89.1710.78.89.17
1910.78.89.18/3210.78.89.18 – 10.78.89.1810.78.89.18
2010.78.89.19/3210.78.89.19 – 10.78.89.1910.78.89.19
2110.78.89.20/3210.78.89.20 – 10.78.89.2010.78.89.20
2210.78.89.21/3210.78.89.21 – 10.78.89.2110.78.89.21
2310.78.89.22/3210.78.89.22 – 10.78.89.2210.78.89.22
2410.78.89.23/3210.78.89.23 – 10.78.89.2310.78.89.23
2510.78.89.24/3210.78.89.24 – 10.78.89.2410.78.89.24
2610.78.89.25/3210.78.89.25 – 10.78.89.2510.78.89.25
2710.78.89.26/3210.78.89.26 – 10.78.89.2610.78.89.26
2810.78.89.27/3210.78.89.27 – 10.78.89.2710.78.89.27
2910.78.89.28/3210.78.89.28 – 10.78.89.2810.78.89.28
3010.78.89.29/3210.78.89.29 – 10.78.89.2910.78.89.29
3110.78.89.30/3210.78.89.30 – 10.78.89.3010.78.89.30
3210.78.89.31/3210.78.89.31 – 10.78.89.3110.78.89.31
3310.78.89.32/3210.78.89.32 – 10.78.89.3210.78.89.32
3410.78.89.33/3210.78.89.33 – 10.78.89.3310.78.89.33
3510.78.89.34/3210.78.89.34 – 10.78.89.3410.78.89.34
3610.78.89.35/3210.78.89.35 – 10.78.89.3510.78.89.35
3710.78.89.36/3210.78.89.36 – 10.78.89.3610.78.89.36
3810.78.89.37/3210.78.89.37 – 10.78.89.3710.78.89.37
3910.78.89.38/3210.78.89.38 – 10.78.89.3810.78.89.38
4010.78.89.39/3210.78.89.39 – 10.78.89.3910.78.89.39
4110.78.89.40/3210.78.89.40 – 10.78.89.4010.78.89.40
4210.78.89.41/3210.78.89.41 – 10.78.89.4110.78.89.41
4310.78.89.42/3210.78.89.42 – 10.78.89.4210.78.89.42
4410.78.89.43/3210.78.89.43 – 10.78.89.4310.78.89.43
4510.78.89.44/3210.78.89.44 – 10.78.89.4410.78.89.44
4610.78.89.45/3210.78.89.45 – 10.78.89.4510.78.89.45
4710.78.89.46/3210.78.89.46 – 10.78.89.4610.78.89.46
4810.78.89.47/3210.78.89.47 – 10.78.89.4710.78.89.47
4910.78.89.48/3210.78.89.48 – 10.78.89.4810.78.89.48
5010.78.89.49/3210.78.89.49 – 10.78.89.4910.78.89.49
5110.78.89.50/3210.78.89.50 – 10.78.89.5010.78.89.50
5210.78.89.51/3210.78.89.51 – 10.78.89.5110.78.89.51
5310.78.89.52/3210.78.89.52 – 10.78.89.5210.78.89.52
5410.78.89.53/3210.78.89.53 – 10.78.89.5310.78.89.53
5510.78.89.54/3210.78.89.54 – 10.78.89.5410.78.89.54
5610.78.89.55/3210.78.89.55 – 10.78.89.5510.78.89.55
5710.78.89.56/3210.78.89.56 – 10.78.89.5610.78.89.56
5810.78.89.57/3210.78.89.57 – 10.78.89.5710.78.89.57
5910.78.89.58/3210.78.89.58 – 10.78.89.5810.78.89.58
6010.78.89.59/3210.78.89.59 – 10.78.89.5910.78.89.59
6110.78.89.60/3210.78.89.60 – 10.78.89.6010.78.89.60
6210.78.89.61/3210.78.89.61 – 10.78.89.6110.78.89.61
6310.78.89.62/3210.78.89.62 – 10.78.89.6210.78.89.62
6410.78.89.63/3210.78.89.63 – 10.78.89.6310.78.89.63
6510.78.89.64/3210.78.89.64 – 10.78.89.6410.78.89.64
6610.78.89.65/3210.78.89.65 – 10.78.89.6510.78.89.65
6710.78.89.66/3210.78.89.66 – 10.78.89.6610.78.89.66
6810.78.89.67/3210.78.89.67 – 10.78.89.6710.78.89.67
6910.78.89.68/3210.78.89.68 – 10.78.89.6810.78.89.68
7010.78.89.69/3210.78.89.69 – 10.78.89.6910.78.89.69
7110.78.89.70/3210.78.89.70 – 10.78.89.7010.78.89.70
7210.78.89.71/3210.78.89.71 – 10.78.89.7110.78.89.71
7310.78.89.72/3210.78.89.72 – 10.78.89.7210.78.89.72
7410.78.89.73/3210.78.89.73 – 10.78.89.7310.78.89.73
7510.78.89.74/3210.78.89.74 – 10.78.89.7410.78.89.74
7610.78.89.75/3210.78.89.75 – 10.78.89.7510.78.89.75
7710.78.89.76/3210.78.89.76 – 10.78.89.7610.78.89.76
7810.78.89.77/3210.78.89.77 – 10.78.89.7710.78.89.77
7910.78.89.78/3210.78.89.78 – 10.78.89.7810.78.89.78
8010.78.89.79/3210.78.89.79 – 10.78.89.7910.78.89.79
8110.78.89.80/3210.78.89.80 – 10.78.89.8010.78.89.80
8210.78.89.81/3210.78.89.81 – 10.78.89.8110.78.89.81
8310.78.89.82/3210.78.89.82 – 10.78.89.8210.78.89.82
8410.78.89.83/3210.78.89.83 – 10.78.89.8310.78.89.83
8510.78.89.84/3210.78.89.84 – 10.78.89.8410.78.89.84
8610.78.89.85/3210.78.89.85 – 10.78.89.8510.78.89.85
8710.78.89.86/3210.78.89.86 – 10.78.89.8610.78.89.86
8810.78.89.87/3210.78.89.87 – 10.78.89.8710.78.89.87
8910.78.89.88/3210.78.89.88 – 10.78.89.8810.78.89.88
9010.78.89.89/3210.78.89.89 – 10.78.89.8910.78.89.89
9110.78.89.90/3210.78.89.90 – 10.78.89.9010.78.89.90
9210.78.89.91/3210.78.89.91 – 10.78.89.9110.78.89.91
9310.78.89.92/3210.78.89.92 – 10.78.89.9210.78.89.92
9410.78.89.93/3210.78.89.93 – 10.78.89.9310.78.89.93
9510.78.89.94/3210.78.89.94 – 10.78.89.9410.78.89.94
9610.78.89.95/3210.78.89.95 – 10.78.89.9510.78.89.95
9710.78.89.96/3210.78.89.96 – 10.78.89.9610.78.89.96
9810.78.89.97/3210.78.89.97 – 10.78.89.9710.78.89.97
9910.78.89.98/3210.78.89.98 – 10.78.89.9810.78.89.98
10010.78.89.99/3210.78.89.99 – 10.78.89.9910.78.89.99
10110.78.89.100/3210.78.89.100 – 10.78.89.10010.78.89.100
10210.78.89.101/3210.78.89.101 – 10.78.89.10110.78.89.101
10310.78.89.102/3210.78.89.102 – 10.78.89.10210.78.89.102
10410.78.89.103/3210.78.89.103 – 10.78.89.10310.78.89.103
10510.78.89.104/3210.78.89.104 – 10.78.89.10410.78.89.104
10610.78.89.105/3210.78.89.105 – 10.78.89.10510.78.89.105
10710.78.89.106/3210.78.89.106 – 10.78.89.10610.78.89.106
10810.78.89.107/3210.78.89.107 – 10.78.89.10710.78.89.107
10910.78.89.108/3210.78.89.108 – 10.78.89.10810.78.89.108
11010.78.89.109/3210.78.89.109 – 10.78.89.10910.78.89.109
11110.78.89.110/3210.78.89.110 – 10.78.89.11010.78.89.110
11210.78.89.111/3210.78.89.111 – 10.78.89.11110.78.89.111
11310.78.89.112/3210.78.89.112 – 10.78.89.11210.78.89.112
11410.78.89.113/3210.78.89.113 – 10.78.89.11310.78.89.113
11510.78.89.114/3210.78.89.114 – 10.78.89.11410.78.89.114
11610.78.89.115/3210.78.89.115 – 10.78.89.11510.78.89.115
11710.78.89.116/3210.78.89.116 – 10.78.89.11610.78.89.116
11810.78.89.117/3210.78.89.117 – 10.78.89.11710.78.89.117
11910.78.89.118/3210.78.89.118 – 10.78.89.11810.78.89.118
12010.78.89.119/3210.78.89.119 – 10.78.89.11910.78.89.119
12110.78.89.120/3210.78.89.120 – 10.78.89.12010.78.89.120
12210.78.89.121/3210.78.89.121 – 10.78.89.12110.78.89.121
12310.78.89.122/3210.78.89.122 – 10.78.89.12210.78.89.122
12410.78.89.123/3210.78.89.123 – 10.78.89.12310.78.89.123
12510.78.89.124/3210.78.89.124 – 10.78.89.12410.78.89.124
12610.78.89.125/3210.78.89.125 – 10.78.89.12510.78.89.125
12710.78.89.126/3210.78.89.126 – 10.78.89.12610.78.89.126
12810.78.89.127/3210.78.89.127 – 10.78.89.12710.78.89.127
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 →