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)10.78.52.0/25
network10.78.52.0/25
broadcast10.78.52.127
first host10.78.52.1
last host10.78.52.126
subnet mask255.255.255.128
wildcard0.0.0.127
addresses128
usable hosts126
classA
ipcalc 10.78.52.0/25
address00001010.01001110.00110100.00000000
subnet mask11111111.11111111.11111111.10000000
network00001010.01001110.00110100.00000000
broadcast00001010.01001110.00110100.01111111
green = network part, grey = host part
hex0x0a4e3400
decimal172897280
reverse dns0.52.78.10.in-addr.arpa
ipv4-mapped::ffff:a4e:3400

/25 split into /32 · 128 subnets

close ×
#networkhost rangebroadcast
110.78.52.0/3210.78.52.0 – 10.78.52.010.78.52.0
210.78.52.1/3210.78.52.1 – 10.78.52.110.78.52.1
310.78.52.2/3210.78.52.2 – 10.78.52.210.78.52.2
410.78.52.3/3210.78.52.3 – 10.78.52.310.78.52.3
510.78.52.4/3210.78.52.4 – 10.78.52.410.78.52.4
610.78.52.5/3210.78.52.5 – 10.78.52.510.78.52.5
710.78.52.6/3210.78.52.6 – 10.78.52.610.78.52.6
810.78.52.7/3210.78.52.7 – 10.78.52.710.78.52.7
910.78.52.8/3210.78.52.8 – 10.78.52.810.78.52.8
1010.78.52.9/3210.78.52.9 – 10.78.52.910.78.52.9
1110.78.52.10/3210.78.52.10 – 10.78.52.1010.78.52.10
1210.78.52.11/3210.78.52.11 – 10.78.52.1110.78.52.11
1310.78.52.12/3210.78.52.12 – 10.78.52.1210.78.52.12
1410.78.52.13/3210.78.52.13 – 10.78.52.1310.78.52.13
1510.78.52.14/3210.78.52.14 – 10.78.52.1410.78.52.14
1610.78.52.15/3210.78.52.15 – 10.78.52.1510.78.52.15
1710.78.52.16/3210.78.52.16 – 10.78.52.1610.78.52.16
1810.78.52.17/3210.78.52.17 – 10.78.52.1710.78.52.17
1910.78.52.18/3210.78.52.18 – 10.78.52.1810.78.52.18
2010.78.52.19/3210.78.52.19 – 10.78.52.1910.78.52.19
2110.78.52.20/3210.78.52.20 – 10.78.52.2010.78.52.20
2210.78.52.21/3210.78.52.21 – 10.78.52.2110.78.52.21
2310.78.52.22/3210.78.52.22 – 10.78.52.2210.78.52.22
2410.78.52.23/3210.78.52.23 – 10.78.52.2310.78.52.23
2510.78.52.24/3210.78.52.24 – 10.78.52.2410.78.52.24
2610.78.52.25/3210.78.52.25 – 10.78.52.2510.78.52.25
2710.78.52.26/3210.78.52.26 – 10.78.52.2610.78.52.26
2810.78.52.27/3210.78.52.27 – 10.78.52.2710.78.52.27
2910.78.52.28/3210.78.52.28 – 10.78.52.2810.78.52.28
3010.78.52.29/3210.78.52.29 – 10.78.52.2910.78.52.29
3110.78.52.30/3210.78.52.30 – 10.78.52.3010.78.52.30
3210.78.52.31/3210.78.52.31 – 10.78.52.3110.78.52.31
3310.78.52.32/3210.78.52.32 – 10.78.52.3210.78.52.32
3410.78.52.33/3210.78.52.33 – 10.78.52.3310.78.52.33
3510.78.52.34/3210.78.52.34 – 10.78.52.3410.78.52.34
3610.78.52.35/3210.78.52.35 – 10.78.52.3510.78.52.35
3710.78.52.36/3210.78.52.36 – 10.78.52.3610.78.52.36
3810.78.52.37/3210.78.52.37 – 10.78.52.3710.78.52.37
3910.78.52.38/3210.78.52.38 – 10.78.52.3810.78.52.38
4010.78.52.39/3210.78.52.39 – 10.78.52.3910.78.52.39
4110.78.52.40/3210.78.52.40 – 10.78.52.4010.78.52.40
4210.78.52.41/3210.78.52.41 – 10.78.52.4110.78.52.41
4310.78.52.42/3210.78.52.42 – 10.78.52.4210.78.52.42
4410.78.52.43/3210.78.52.43 – 10.78.52.4310.78.52.43
4510.78.52.44/3210.78.52.44 – 10.78.52.4410.78.52.44
4610.78.52.45/3210.78.52.45 – 10.78.52.4510.78.52.45
4710.78.52.46/3210.78.52.46 – 10.78.52.4610.78.52.46
4810.78.52.47/3210.78.52.47 – 10.78.52.4710.78.52.47
4910.78.52.48/3210.78.52.48 – 10.78.52.4810.78.52.48
5010.78.52.49/3210.78.52.49 – 10.78.52.4910.78.52.49
5110.78.52.50/3210.78.52.50 – 10.78.52.5010.78.52.50
5210.78.52.51/3210.78.52.51 – 10.78.52.5110.78.52.51
5310.78.52.52/3210.78.52.52 – 10.78.52.5210.78.52.52
5410.78.52.53/3210.78.52.53 – 10.78.52.5310.78.52.53
5510.78.52.54/3210.78.52.54 – 10.78.52.5410.78.52.54
5610.78.52.55/3210.78.52.55 – 10.78.52.5510.78.52.55
5710.78.52.56/3210.78.52.56 – 10.78.52.5610.78.52.56
5810.78.52.57/3210.78.52.57 – 10.78.52.5710.78.52.57
5910.78.52.58/3210.78.52.58 – 10.78.52.5810.78.52.58
6010.78.52.59/3210.78.52.59 – 10.78.52.5910.78.52.59
6110.78.52.60/3210.78.52.60 – 10.78.52.6010.78.52.60
6210.78.52.61/3210.78.52.61 – 10.78.52.6110.78.52.61
6310.78.52.62/3210.78.52.62 – 10.78.52.6210.78.52.62
6410.78.52.63/3210.78.52.63 – 10.78.52.6310.78.52.63
6510.78.52.64/3210.78.52.64 – 10.78.52.6410.78.52.64
6610.78.52.65/3210.78.52.65 – 10.78.52.6510.78.52.65
6710.78.52.66/3210.78.52.66 – 10.78.52.6610.78.52.66
6810.78.52.67/3210.78.52.67 – 10.78.52.6710.78.52.67
6910.78.52.68/3210.78.52.68 – 10.78.52.6810.78.52.68
7010.78.52.69/3210.78.52.69 – 10.78.52.6910.78.52.69
7110.78.52.70/3210.78.52.70 – 10.78.52.7010.78.52.70
7210.78.52.71/3210.78.52.71 – 10.78.52.7110.78.52.71
7310.78.52.72/3210.78.52.72 – 10.78.52.7210.78.52.72
7410.78.52.73/3210.78.52.73 – 10.78.52.7310.78.52.73
7510.78.52.74/3210.78.52.74 – 10.78.52.7410.78.52.74
7610.78.52.75/3210.78.52.75 – 10.78.52.7510.78.52.75
7710.78.52.76/3210.78.52.76 – 10.78.52.7610.78.52.76
7810.78.52.77/3210.78.52.77 – 10.78.52.7710.78.52.77
7910.78.52.78/3210.78.52.78 – 10.78.52.7810.78.52.78
8010.78.52.79/3210.78.52.79 – 10.78.52.7910.78.52.79
8110.78.52.80/3210.78.52.80 – 10.78.52.8010.78.52.80
8210.78.52.81/3210.78.52.81 – 10.78.52.8110.78.52.81
8310.78.52.82/3210.78.52.82 – 10.78.52.8210.78.52.82
8410.78.52.83/3210.78.52.83 – 10.78.52.8310.78.52.83
8510.78.52.84/3210.78.52.84 – 10.78.52.8410.78.52.84
8610.78.52.85/3210.78.52.85 – 10.78.52.8510.78.52.85
8710.78.52.86/3210.78.52.86 – 10.78.52.8610.78.52.86
8810.78.52.87/3210.78.52.87 – 10.78.52.8710.78.52.87
8910.78.52.88/3210.78.52.88 – 10.78.52.8810.78.52.88
9010.78.52.89/3210.78.52.89 – 10.78.52.8910.78.52.89
9110.78.52.90/3210.78.52.90 – 10.78.52.9010.78.52.90
9210.78.52.91/3210.78.52.91 – 10.78.52.9110.78.52.91
9310.78.52.92/3210.78.52.92 – 10.78.52.9210.78.52.92
9410.78.52.93/3210.78.52.93 – 10.78.52.9310.78.52.93
9510.78.52.94/3210.78.52.94 – 10.78.52.9410.78.52.94
9610.78.52.95/3210.78.52.95 – 10.78.52.9510.78.52.95
9710.78.52.96/3210.78.52.96 – 10.78.52.9610.78.52.96
9810.78.52.97/3210.78.52.97 – 10.78.52.9710.78.52.97
9910.78.52.98/3210.78.52.98 – 10.78.52.9810.78.52.98
10010.78.52.99/3210.78.52.99 – 10.78.52.9910.78.52.99
10110.78.52.100/3210.78.52.100 – 10.78.52.10010.78.52.100
10210.78.52.101/3210.78.52.101 – 10.78.52.10110.78.52.101
10310.78.52.102/3210.78.52.102 – 10.78.52.10210.78.52.102
10410.78.52.103/3210.78.52.103 – 10.78.52.10310.78.52.103
10510.78.52.104/3210.78.52.104 – 10.78.52.10410.78.52.104
10610.78.52.105/3210.78.52.105 – 10.78.52.10510.78.52.105
10710.78.52.106/3210.78.52.106 – 10.78.52.10610.78.52.106
10810.78.52.107/3210.78.52.107 – 10.78.52.10710.78.52.107
10910.78.52.108/3210.78.52.108 – 10.78.52.10810.78.52.108
11010.78.52.109/3210.78.52.109 – 10.78.52.10910.78.52.109
11110.78.52.110/3210.78.52.110 – 10.78.52.11010.78.52.110
11210.78.52.111/3210.78.52.111 – 10.78.52.11110.78.52.111
11310.78.52.112/3210.78.52.112 – 10.78.52.11210.78.52.112
11410.78.52.113/3210.78.52.113 – 10.78.52.11310.78.52.113
11510.78.52.114/3210.78.52.114 – 10.78.52.11410.78.52.114
11610.78.52.115/3210.78.52.115 – 10.78.52.11510.78.52.115
11710.78.52.116/3210.78.52.116 – 10.78.52.11610.78.52.116
11810.78.52.117/3210.78.52.117 – 10.78.52.11710.78.52.117
11910.78.52.118/3210.78.52.118 – 10.78.52.11810.78.52.118
12010.78.52.119/3210.78.52.119 – 10.78.52.11910.78.52.119
12110.78.52.120/3210.78.52.120 – 10.78.52.12010.78.52.120
12210.78.52.121/3210.78.52.121 – 10.78.52.12110.78.52.121
12310.78.52.122/3210.78.52.122 – 10.78.52.12210.78.52.122
12410.78.52.123/3210.78.52.123 – 10.78.52.12310.78.52.123
12510.78.52.124/3210.78.52.124 – 10.78.52.12410.78.52.124
12610.78.52.125/3210.78.52.125 – 10.78.52.12510.78.52.125
12710.78.52.126/3210.78.52.126 – 10.78.52.12610.78.52.126
12810.78.52.127/3210.78.52.127 – 10.78.52.12710.78.52.127
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 →