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)10.78.171.0/24
network10.78.171.0/24
broadcast10.78.171.255
first host10.78.171.1
last host10.78.171.254
subnet mask255.255.255.0
wildcard0.0.0.255
addresses256
usable hosts254
classA
ipcalc 10.78.171.0/24
address00001010.01001110.10101011.00000000
subnet mask11111111.11111111.11111111.00000000
network00001010.01001110.10101011.00000000
broadcast00001010.01001110.10101011.11111111
green = network part, grey = host part
hex0x0a4eab00
decimal172927744
reverse dns0.171.78.10.in-addr.arpa
ipv4-mapped::ffff:a4e:ab00

/24 split into /32 · 256 subnets

close ×
#networkhost rangebroadcast
110.78.171.0/3210.78.171.0 – 10.78.171.010.78.171.0
210.78.171.1/3210.78.171.1 – 10.78.171.110.78.171.1
310.78.171.2/3210.78.171.2 – 10.78.171.210.78.171.2
410.78.171.3/3210.78.171.3 – 10.78.171.310.78.171.3
510.78.171.4/3210.78.171.4 – 10.78.171.410.78.171.4
610.78.171.5/3210.78.171.5 – 10.78.171.510.78.171.5
710.78.171.6/3210.78.171.6 – 10.78.171.610.78.171.6
810.78.171.7/3210.78.171.7 – 10.78.171.710.78.171.7
910.78.171.8/3210.78.171.8 – 10.78.171.810.78.171.8
1010.78.171.9/3210.78.171.9 – 10.78.171.910.78.171.9
1110.78.171.10/3210.78.171.10 – 10.78.171.1010.78.171.10
1210.78.171.11/3210.78.171.11 – 10.78.171.1110.78.171.11
1310.78.171.12/3210.78.171.12 – 10.78.171.1210.78.171.12
1410.78.171.13/3210.78.171.13 – 10.78.171.1310.78.171.13
1510.78.171.14/3210.78.171.14 – 10.78.171.1410.78.171.14
1610.78.171.15/3210.78.171.15 – 10.78.171.1510.78.171.15
1710.78.171.16/3210.78.171.16 – 10.78.171.1610.78.171.16
1810.78.171.17/3210.78.171.17 – 10.78.171.1710.78.171.17
1910.78.171.18/3210.78.171.18 – 10.78.171.1810.78.171.18
2010.78.171.19/3210.78.171.19 – 10.78.171.1910.78.171.19
2110.78.171.20/3210.78.171.20 – 10.78.171.2010.78.171.20
2210.78.171.21/3210.78.171.21 – 10.78.171.2110.78.171.21
2310.78.171.22/3210.78.171.22 – 10.78.171.2210.78.171.22
2410.78.171.23/3210.78.171.23 – 10.78.171.2310.78.171.23
2510.78.171.24/3210.78.171.24 – 10.78.171.2410.78.171.24
2610.78.171.25/3210.78.171.25 – 10.78.171.2510.78.171.25
2710.78.171.26/3210.78.171.26 – 10.78.171.2610.78.171.26
2810.78.171.27/3210.78.171.27 – 10.78.171.2710.78.171.27
2910.78.171.28/3210.78.171.28 – 10.78.171.2810.78.171.28
3010.78.171.29/3210.78.171.29 – 10.78.171.2910.78.171.29
3110.78.171.30/3210.78.171.30 – 10.78.171.3010.78.171.30
3210.78.171.31/3210.78.171.31 – 10.78.171.3110.78.171.31
3310.78.171.32/3210.78.171.32 – 10.78.171.3210.78.171.32
3410.78.171.33/3210.78.171.33 – 10.78.171.3310.78.171.33
3510.78.171.34/3210.78.171.34 – 10.78.171.3410.78.171.34
3610.78.171.35/3210.78.171.35 – 10.78.171.3510.78.171.35
3710.78.171.36/3210.78.171.36 – 10.78.171.3610.78.171.36
3810.78.171.37/3210.78.171.37 – 10.78.171.3710.78.171.37
3910.78.171.38/3210.78.171.38 – 10.78.171.3810.78.171.38
4010.78.171.39/3210.78.171.39 – 10.78.171.3910.78.171.39
4110.78.171.40/3210.78.171.40 – 10.78.171.4010.78.171.40
4210.78.171.41/3210.78.171.41 – 10.78.171.4110.78.171.41
4310.78.171.42/3210.78.171.42 – 10.78.171.4210.78.171.42
4410.78.171.43/3210.78.171.43 – 10.78.171.4310.78.171.43
4510.78.171.44/3210.78.171.44 – 10.78.171.4410.78.171.44
4610.78.171.45/3210.78.171.45 – 10.78.171.4510.78.171.45
4710.78.171.46/3210.78.171.46 – 10.78.171.4610.78.171.46
4810.78.171.47/3210.78.171.47 – 10.78.171.4710.78.171.47
4910.78.171.48/3210.78.171.48 – 10.78.171.4810.78.171.48
5010.78.171.49/3210.78.171.49 – 10.78.171.4910.78.171.49
5110.78.171.50/3210.78.171.50 – 10.78.171.5010.78.171.50
5210.78.171.51/3210.78.171.51 – 10.78.171.5110.78.171.51
5310.78.171.52/3210.78.171.52 – 10.78.171.5210.78.171.52
5410.78.171.53/3210.78.171.53 – 10.78.171.5310.78.171.53
5510.78.171.54/3210.78.171.54 – 10.78.171.5410.78.171.54
5610.78.171.55/3210.78.171.55 – 10.78.171.5510.78.171.55
5710.78.171.56/3210.78.171.56 – 10.78.171.5610.78.171.56
5810.78.171.57/3210.78.171.57 – 10.78.171.5710.78.171.57
5910.78.171.58/3210.78.171.58 – 10.78.171.5810.78.171.58
6010.78.171.59/3210.78.171.59 – 10.78.171.5910.78.171.59
6110.78.171.60/3210.78.171.60 – 10.78.171.6010.78.171.60
6210.78.171.61/3210.78.171.61 – 10.78.171.6110.78.171.61
6310.78.171.62/3210.78.171.62 – 10.78.171.6210.78.171.62
6410.78.171.63/3210.78.171.63 – 10.78.171.6310.78.171.63
6510.78.171.64/3210.78.171.64 – 10.78.171.6410.78.171.64
6610.78.171.65/3210.78.171.65 – 10.78.171.6510.78.171.65
6710.78.171.66/3210.78.171.66 – 10.78.171.6610.78.171.66
6810.78.171.67/3210.78.171.67 – 10.78.171.6710.78.171.67
6910.78.171.68/3210.78.171.68 – 10.78.171.6810.78.171.68
7010.78.171.69/3210.78.171.69 – 10.78.171.6910.78.171.69
7110.78.171.70/3210.78.171.70 – 10.78.171.7010.78.171.70
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7410.78.171.73/3210.78.171.73 – 10.78.171.7310.78.171.73
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7610.78.171.75/3210.78.171.75 – 10.78.171.7510.78.171.75
7710.78.171.76/3210.78.171.76 – 10.78.171.7610.78.171.76
7810.78.171.77/3210.78.171.77 – 10.78.171.7710.78.171.77
7910.78.171.78/3210.78.171.78 – 10.78.171.7810.78.171.78
8010.78.171.79/3210.78.171.79 – 10.78.171.7910.78.171.79
8110.78.171.80/3210.78.171.80 – 10.78.171.8010.78.171.80
8210.78.171.81/3210.78.171.81 – 10.78.171.8110.78.171.81
8310.78.171.82/3210.78.171.82 – 10.78.171.8210.78.171.82
8410.78.171.83/3210.78.171.83 – 10.78.171.8310.78.171.83
8510.78.171.84/3210.78.171.84 – 10.78.171.8410.78.171.84
8610.78.171.85/3210.78.171.85 – 10.78.171.8510.78.171.85
8710.78.171.86/3210.78.171.86 – 10.78.171.8610.78.171.86
8810.78.171.87/3210.78.171.87 – 10.78.171.8710.78.171.87
8910.78.171.88/3210.78.171.88 – 10.78.171.8810.78.171.88
9010.78.171.89/3210.78.171.89 – 10.78.171.8910.78.171.89
9110.78.171.90/3210.78.171.90 – 10.78.171.9010.78.171.90
9210.78.171.91/3210.78.171.91 – 10.78.171.9110.78.171.91
9310.78.171.92/3210.78.171.92 – 10.78.171.9210.78.171.92
9410.78.171.93/3210.78.171.93 – 10.78.171.9310.78.171.93
9510.78.171.94/3210.78.171.94 – 10.78.171.9410.78.171.94
9610.78.171.95/3210.78.171.95 – 10.78.171.9510.78.171.95
9710.78.171.96/3210.78.171.96 – 10.78.171.9610.78.171.96
9810.78.171.97/3210.78.171.97 – 10.78.171.9710.78.171.97
9910.78.171.98/3210.78.171.98 – 10.78.171.9810.78.171.98
10010.78.171.99/3210.78.171.99 – 10.78.171.9910.78.171.99
10110.78.171.100/3210.78.171.100 – 10.78.171.10010.78.171.100
10210.78.171.101/3210.78.171.101 – 10.78.171.10110.78.171.101
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10410.78.171.103/3210.78.171.103 – 10.78.171.10310.78.171.103
10510.78.171.104/3210.78.171.104 – 10.78.171.10410.78.171.104
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10710.78.171.106/3210.78.171.106 – 10.78.171.10610.78.171.106
10810.78.171.107/3210.78.171.107 – 10.78.171.10710.78.171.107
10910.78.171.108/3210.78.171.108 – 10.78.171.10810.78.171.108
11010.78.171.109/3210.78.171.109 – 10.78.171.10910.78.171.109
11110.78.171.110/3210.78.171.110 – 10.78.171.11010.78.171.110
11210.78.171.111/3210.78.171.111 – 10.78.171.11110.78.171.111
11310.78.171.112/3210.78.171.112 – 10.78.171.11210.78.171.112
11410.78.171.113/3210.78.171.113 – 10.78.171.11310.78.171.113
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12010.78.171.119/3210.78.171.119 – 10.78.171.11910.78.171.119
12110.78.171.120/3210.78.171.120 – 10.78.171.12010.78.171.120
12210.78.171.121/3210.78.171.121 – 10.78.171.12110.78.171.121
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13210.78.171.131/3210.78.171.131 – 10.78.171.13110.78.171.131
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13510.78.171.134/3210.78.171.134 – 10.78.171.13410.78.171.134
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13710.78.171.136/3210.78.171.136 – 10.78.171.13610.78.171.136
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13910.78.171.138/3210.78.171.138 – 10.78.171.13810.78.171.138
14010.78.171.139/3210.78.171.139 – 10.78.171.13910.78.171.139
14110.78.171.140/3210.78.171.140 – 10.78.171.14010.78.171.140
14210.78.171.141/3210.78.171.141 – 10.78.171.14110.78.171.141
14310.78.171.142/3210.78.171.142 – 10.78.171.14210.78.171.142
14410.78.171.143/3210.78.171.143 – 10.78.171.14310.78.171.143
14510.78.171.144/3210.78.171.144 – 10.78.171.14410.78.171.144
14610.78.171.145/3210.78.171.145 – 10.78.171.14510.78.171.145
14710.78.171.146/3210.78.171.146 – 10.78.171.14610.78.171.146
14810.78.171.147/3210.78.171.147 – 10.78.171.14710.78.171.147
14910.78.171.148/3210.78.171.148 – 10.78.171.14810.78.171.148
15010.78.171.149/3210.78.171.149 – 10.78.171.14910.78.171.149
15110.78.171.150/3210.78.171.150 – 10.78.171.15010.78.171.150
15210.78.171.151/3210.78.171.151 – 10.78.171.15110.78.171.151
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15410.78.171.153/3210.78.171.153 – 10.78.171.15310.78.171.153
15510.78.171.154/3210.78.171.154 – 10.78.171.15410.78.171.154
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15710.78.171.156/3210.78.171.156 – 10.78.171.15610.78.171.156
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15910.78.171.158/3210.78.171.158 – 10.78.171.15810.78.171.158
16010.78.171.159/3210.78.171.159 – 10.78.171.15910.78.171.159
16110.78.171.160/3210.78.171.160 – 10.78.171.16010.78.171.160
16210.78.171.161/3210.78.171.161 – 10.78.171.16110.78.171.161
16310.78.171.162/3210.78.171.162 – 10.78.171.16210.78.171.162
16410.78.171.163/3210.78.171.163 – 10.78.171.16310.78.171.163
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16810.78.171.167/3210.78.171.167 – 10.78.171.16710.78.171.167
16910.78.171.168/3210.78.171.168 – 10.78.171.16810.78.171.168
17010.78.171.169/3210.78.171.169 – 10.78.171.16910.78.171.169
17110.78.171.170/3210.78.171.170 – 10.78.171.17010.78.171.170
17210.78.171.171/3210.78.171.171 – 10.78.171.17110.78.171.171
17310.78.171.172/3210.78.171.172 – 10.78.171.17210.78.171.172
17410.78.171.173/3210.78.171.173 – 10.78.171.17310.78.171.173
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18310.78.171.182/3210.78.171.182 – 10.78.171.18210.78.171.182
18410.78.171.183/3210.78.171.183 – 10.78.171.18310.78.171.183
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19210.78.171.191/3210.78.171.191 – 10.78.171.19110.78.171.191
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21910.78.171.218/3210.78.171.218 – 10.78.171.21810.78.171.218
22010.78.171.219/3210.78.171.219 – 10.78.171.21910.78.171.219
22110.78.171.220/3210.78.171.220 – 10.78.171.22010.78.171.220
22210.78.171.221/3210.78.171.221 – 10.78.171.22110.78.171.221
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22910.78.171.228/3210.78.171.228 – 10.78.171.22810.78.171.228
23010.78.171.229/3210.78.171.229 – 10.78.171.22910.78.171.229
23110.78.171.230/3210.78.171.230 – 10.78.171.23010.78.171.230
23210.78.171.231/3210.78.171.231 – 10.78.171.23110.78.171.231
23310.78.171.232/3210.78.171.232 – 10.78.171.23210.78.171.232
23410.78.171.233/3210.78.171.233 – 10.78.171.23310.78.171.233
23510.78.171.234/3210.78.171.234 – 10.78.171.23410.78.171.234
23610.78.171.235/3210.78.171.235 – 10.78.171.23510.78.171.235
23710.78.171.236/3210.78.171.236 – 10.78.171.23610.78.171.236
23810.78.171.237/3210.78.171.237 – 10.78.171.23710.78.171.237
23910.78.171.238/3210.78.171.238 – 10.78.171.23810.78.171.238
24010.78.171.239/3210.78.171.239 – 10.78.171.23910.78.171.239
24110.78.171.240/3210.78.171.240 – 10.78.171.24010.78.171.240
24210.78.171.241/3210.78.171.241 – 10.78.171.24110.78.171.241
24310.78.171.242/3210.78.171.242 – 10.78.171.24210.78.171.242
24410.78.171.243/3210.78.171.243 – 10.78.171.24310.78.171.243
24510.78.171.244/3210.78.171.244 – 10.78.171.24410.78.171.244
24610.78.171.245/3210.78.171.245 – 10.78.171.24510.78.171.245
24710.78.171.246/3210.78.171.246 – 10.78.171.24610.78.171.246
24810.78.171.247/3210.78.171.247 – 10.78.171.24710.78.171.247
24910.78.171.248/3210.78.171.248 – 10.78.171.24810.78.171.248
25010.78.171.249/3210.78.171.249 – 10.78.171.24910.78.171.249
25110.78.171.250/3210.78.171.250 – 10.78.171.25010.78.171.250
25210.78.171.251/3210.78.171.251 – 10.78.171.25110.78.171.251
25310.78.171.252/3210.78.171.252 – 10.78.171.25210.78.171.252
25410.78.171.253/3210.78.171.253 – 10.78.171.25310.78.171.253
25510.78.171.254/3210.78.171.254 – 10.78.171.25410.78.171.254
25610.78.171.255/3210.78.171.255 – 10.78.171.25510.78.171.255
01 / table

IPv4 CIDR prefix table.

Click a prefix longer than your network to split it into subnets.

prefixsubnet maskaddresseshostsin your /24
/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-
/24255.255.255.02562541
/25255.255.255.1281281262 split →
/26255.255.255.19264624 split →
/27255.255.255.22432308 split →
/28255.255.255.240161416 split →
/29255.255.255.2488632 split →
/30255.255.255.2524264 split →
/31255.255.255.25422128 split →
/32255.255.255.25511256 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 →