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)10.3.109.0/24
network10.3.109.0/24
broadcast10.3.109.255
first host10.3.109.1
last host10.3.109.254
subnet mask255.255.255.0
wildcard0.0.0.255
addresses256
usable hosts254
classA
ipcalc 10.3.109.0/24
address00001010.00000011.01101101.00000000
subnet mask11111111.11111111.11111111.00000000
network00001010.00000011.01101101.00000000
broadcast00001010.00000011.01101101.11111111
green = network part, grey = host part
hex0x0a036d00
decimal167996672
reverse dns0.109.3.10.in-addr.arpa
ipv4-mapped::ffff:a03:6d00

/24 split into /32 · 256 subnets

close ×
#networkhost rangebroadcast
110.3.109.0/3210.3.109.0 – 10.3.109.010.3.109.0
210.3.109.1/3210.3.109.1 – 10.3.109.110.3.109.1
310.3.109.2/3210.3.109.2 – 10.3.109.210.3.109.2
410.3.109.3/3210.3.109.3 – 10.3.109.310.3.109.3
510.3.109.4/3210.3.109.4 – 10.3.109.410.3.109.4
610.3.109.5/3210.3.109.5 – 10.3.109.510.3.109.5
710.3.109.6/3210.3.109.6 – 10.3.109.610.3.109.6
810.3.109.7/3210.3.109.7 – 10.3.109.710.3.109.7
910.3.109.8/3210.3.109.8 – 10.3.109.810.3.109.8
1010.3.109.9/3210.3.109.9 – 10.3.109.910.3.109.9
1110.3.109.10/3210.3.109.10 – 10.3.109.1010.3.109.10
1210.3.109.11/3210.3.109.11 – 10.3.109.1110.3.109.11
1310.3.109.12/3210.3.109.12 – 10.3.109.1210.3.109.12
1410.3.109.13/3210.3.109.13 – 10.3.109.1310.3.109.13
1510.3.109.14/3210.3.109.14 – 10.3.109.1410.3.109.14
1610.3.109.15/3210.3.109.15 – 10.3.109.1510.3.109.15
1710.3.109.16/3210.3.109.16 – 10.3.109.1610.3.109.16
1810.3.109.17/3210.3.109.17 – 10.3.109.1710.3.109.17
1910.3.109.18/3210.3.109.18 – 10.3.109.1810.3.109.18
2010.3.109.19/3210.3.109.19 – 10.3.109.1910.3.109.19
2110.3.109.20/3210.3.109.20 – 10.3.109.2010.3.109.20
2210.3.109.21/3210.3.109.21 – 10.3.109.2110.3.109.21
2310.3.109.22/3210.3.109.22 – 10.3.109.2210.3.109.22
2410.3.109.23/3210.3.109.23 – 10.3.109.2310.3.109.23
2510.3.109.24/3210.3.109.24 – 10.3.109.2410.3.109.24
2610.3.109.25/3210.3.109.25 – 10.3.109.2510.3.109.25
2710.3.109.26/3210.3.109.26 – 10.3.109.2610.3.109.26
2810.3.109.27/3210.3.109.27 – 10.3.109.2710.3.109.27
2910.3.109.28/3210.3.109.28 – 10.3.109.2810.3.109.28
3010.3.109.29/3210.3.109.29 – 10.3.109.2910.3.109.29
3110.3.109.30/3210.3.109.30 – 10.3.109.3010.3.109.30
3210.3.109.31/3210.3.109.31 – 10.3.109.3110.3.109.31
3310.3.109.32/3210.3.109.32 – 10.3.109.3210.3.109.32
3410.3.109.33/3210.3.109.33 – 10.3.109.3310.3.109.33
3510.3.109.34/3210.3.109.34 – 10.3.109.3410.3.109.34
3610.3.109.35/3210.3.109.35 – 10.3.109.3510.3.109.35
3710.3.109.36/3210.3.109.36 – 10.3.109.3610.3.109.36
3810.3.109.37/3210.3.109.37 – 10.3.109.3710.3.109.37
3910.3.109.38/3210.3.109.38 – 10.3.109.3810.3.109.38
4010.3.109.39/3210.3.109.39 – 10.3.109.3910.3.109.39
4110.3.109.40/3210.3.109.40 – 10.3.109.4010.3.109.40
4210.3.109.41/3210.3.109.41 – 10.3.109.4110.3.109.41
4310.3.109.42/3210.3.109.42 – 10.3.109.4210.3.109.42
4410.3.109.43/3210.3.109.43 – 10.3.109.4310.3.109.43
4510.3.109.44/3210.3.109.44 – 10.3.109.4410.3.109.44
4610.3.109.45/3210.3.109.45 – 10.3.109.4510.3.109.45
4710.3.109.46/3210.3.109.46 – 10.3.109.4610.3.109.46
4810.3.109.47/3210.3.109.47 – 10.3.109.4710.3.109.47
4910.3.109.48/3210.3.109.48 – 10.3.109.4810.3.109.48
5010.3.109.49/3210.3.109.49 – 10.3.109.4910.3.109.49
5110.3.109.50/3210.3.109.50 – 10.3.109.5010.3.109.50
5210.3.109.51/3210.3.109.51 – 10.3.109.5110.3.109.51
5310.3.109.52/3210.3.109.52 – 10.3.109.5210.3.109.52
5410.3.109.53/3210.3.109.53 – 10.3.109.5310.3.109.53
5510.3.109.54/3210.3.109.54 – 10.3.109.5410.3.109.54
5610.3.109.55/3210.3.109.55 – 10.3.109.5510.3.109.55
5710.3.109.56/3210.3.109.56 – 10.3.109.5610.3.109.56
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5910.3.109.58/3210.3.109.58 – 10.3.109.5810.3.109.58
6010.3.109.59/3210.3.109.59 – 10.3.109.5910.3.109.59
6110.3.109.60/3210.3.109.60 – 10.3.109.6010.3.109.60
6210.3.109.61/3210.3.109.61 – 10.3.109.6110.3.109.61
6310.3.109.62/3210.3.109.62 – 10.3.109.6210.3.109.62
6410.3.109.63/3210.3.109.63 – 10.3.109.6310.3.109.63
6510.3.109.64/3210.3.109.64 – 10.3.109.6410.3.109.64
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6810.3.109.67/3210.3.109.67 – 10.3.109.6710.3.109.67
6910.3.109.68/3210.3.109.68 – 10.3.109.6810.3.109.68
7010.3.109.69/3210.3.109.69 – 10.3.109.6910.3.109.69
7110.3.109.70/3210.3.109.70 – 10.3.109.7010.3.109.70
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7610.3.109.75/3210.3.109.75 – 10.3.109.7510.3.109.75
7710.3.109.76/3210.3.109.76 – 10.3.109.7610.3.109.76
7810.3.109.77/3210.3.109.77 – 10.3.109.7710.3.109.77
7910.3.109.78/3210.3.109.78 – 10.3.109.7810.3.109.78
8010.3.109.79/3210.3.109.79 – 10.3.109.7910.3.109.79
8110.3.109.80/3210.3.109.80 – 10.3.109.8010.3.109.80
8210.3.109.81/3210.3.109.81 – 10.3.109.8110.3.109.81
8310.3.109.82/3210.3.109.82 – 10.3.109.8210.3.109.82
8410.3.109.83/3210.3.109.83 – 10.3.109.8310.3.109.83
8510.3.109.84/3210.3.109.84 – 10.3.109.8410.3.109.84
8610.3.109.85/3210.3.109.85 – 10.3.109.8510.3.109.85
8710.3.109.86/3210.3.109.86 – 10.3.109.8610.3.109.86
8810.3.109.87/3210.3.109.87 – 10.3.109.8710.3.109.87
8910.3.109.88/3210.3.109.88 – 10.3.109.8810.3.109.88
9010.3.109.89/3210.3.109.89 – 10.3.109.8910.3.109.89
9110.3.109.90/3210.3.109.90 – 10.3.109.9010.3.109.90
9210.3.109.91/3210.3.109.91 – 10.3.109.9110.3.109.91
9310.3.109.92/3210.3.109.92 – 10.3.109.9210.3.109.92
9410.3.109.93/3210.3.109.93 – 10.3.109.9310.3.109.93
9510.3.109.94/3210.3.109.94 – 10.3.109.9410.3.109.94
9610.3.109.95/3210.3.109.95 – 10.3.109.9510.3.109.95
9710.3.109.96/3210.3.109.96 – 10.3.109.9610.3.109.96
9810.3.109.97/3210.3.109.97 – 10.3.109.9710.3.109.97
9910.3.109.98/3210.3.109.98 – 10.3.109.9810.3.109.98
10010.3.109.99/3210.3.109.99 – 10.3.109.9910.3.109.99
10110.3.109.100/3210.3.109.100 – 10.3.109.10010.3.109.100
10210.3.109.101/3210.3.109.101 – 10.3.109.10110.3.109.101
10310.3.109.102/3210.3.109.102 – 10.3.109.10210.3.109.102
10410.3.109.103/3210.3.109.103 – 10.3.109.10310.3.109.103
10510.3.109.104/3210.3.109.104 – 10.3.109.10410.3.109.104
10610.3.109.105/3210.3.109.105 – 10.3.109.10510.3.109.105
10710.3.109.106/3210.3.109.106 – 10.3.109.10610.3.109.106
10810.3.109.107/3210.3.109.107 – 10.3.109.10710.3.109.107
10910.3.109.108/3210.3.109.108 – 10.3.109.10810.3.109.108
11010.3.109.109/3210.3.109.109 – 10.3.109.10910.3.109.109
11110.3.109.110/3210.3.109.110 – 10.3.109.11010.3.109.110
11210.3.109.111/3210.3.109.111 – 10.3.109.11110.3.109.111
11310.3.109.112/3210.3.109.112 – 10.3.109.11210.3.109.112
11410.3.109.113/3210.3.109.113 – 10.3.109.11310.3.109.113
11510.3.109.114/3210.3.109.114 – 10.3.109.11410.3.109.114
11610.3.109.115/3210.3.109.115 – 10.3.109.11510.3.109.115
11710.3.109.116/3210.3.109.116 – 10.3.109.11610.3.109.116
11810.3.109.117/3210.3.109.117 – 10.3.109.11710.3.109.117
11910.3.109.118/3210.3.109.118 – 10.3.109.11810.3.109.118
12010.3.109.119/3210.3.109.119 – 10.3.109.11910.3.109.119
12110.3.109.120/3210.3.109.120 – 10.3.109.12010.3.109.120
12210.3.109.121/3210.3.109.121 – 10.3.109.12110.3.109.121
12310.3.109.122/3210.3.109.122 – 10.3.109.12210.3.109.122
12410.3.109.123/3210.3.109.123 – 10.3.109.12310.3.109.123
12510.3.109.124/3210.3.109.124 – 10.3.109.12410.3.109.124
12610.3.109.125/3210.3.109.125 – 10.3.109.12510.3.109.125
12710.3.109.126/3210.3.109.126 – 10.3.109.12610.3.109.126
12810.3.109.127/3210.3.109.127 – 10.3.109.12710.3.109.127
12910.3.109.128/3210.3.109.128 – 10.3.109.12810.3.109.128
13010.3.109.129/3210.3.109.129 – 10.3.109.12910.3.109.129
13110.3.109.130/3210.3.109.130 – 10.3.109.13010.3.109.130
13210.3.109.131/3210.3.109.131 – 10.3.109.13110.3.109.131
13310.3.109.132/3210.3.109.132 – 10.3.109.13210.3.109.132
13410.3.109.133/3210.3.109.133 – 10.3.109.13310.3.109.133
13510.3.109.134/3210.3.109.134 – 10.3.109.13410.3.109.134
13610.3.109.135/3210.3.109.135 – 10.3.109.13510.3.109.135
13710.3.109.136/3210.3.109.136 – 10.3.109.13610.3.109.136
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13910.3.109.138/3210.3.109.138 – 10.3.109.13810.3.109.138
14010.3.109.139/3210.3.109.139 – 10.3.109.13910.3.109.139
14110.3.109.140/3210.3.109.140 – 10.3.109.14010.3.109.140
14210.3.109.141/3210.3.109.141 – 10.3.109.14110.3.109.141
14310.3.109.142/3210.3.109.142 – 10.3.109.14210.3.109.142
14410.3.109.143/3210.3.109.143 – 10.3.109.14310.3.109.143
14510.3.109.144/3210.3.109.144 – 10.3.109.14410.3.109.144
14610.3.109.145/3210.3.109.145 – 10.3.109.14510.3.109.145
14710.3.109.146/3210.3.109.146 – 10.3.109.14610.3.109.146
14810.3.109.147/3210.3.109.147 – 10.3.109.14710.3.109.147
14910.3.109.148/3210.3.109.148 – 10.3.109.14810.3.109.148
15010.3.109.149/3210.3.109.149 – 10.3.109.14910.3.109.149
15110.3.109.150/3210.3.109.150 – 10.3.109.15010.3.109.150
15210.3.109.151/3210.3.109.151 – 10.3.109.15110.3.109.151
15310.3.109.152/3210.3.109.152 – 10.3.109.15210.3.109.152
15410.3.109.153/3210.3.109.153 – 10.3.109.15310.3.109.153
15510.3.109.154/3210.3.109.154 – 10.3.109.15410.3.109.154
15610.3.109.155/3210.3.109.155 – 10.3.109.15510.3.109.155
15710.3.109.156/3210.3.109.156 – 10.3.109.15610.3.109.156
15810.3.109.157/3210.3.109.157 – 10.3.109.15710.3.109.157
15910.3.109.158/3210.3.109.158 – 10.3.109.15810.3.109.158
16010.3.109.159/3210.3.109.159 – 10.3.109.15910.3.109.159
16110.3.109.160/3210.3.109.160 – 10.3.109.16010.3.109.160
16210.3.109.161/3210.3.109.161 – 10.3.109.16110.3.109.161
16310.3.109.162/3210.3.109.162 – 10.3.109.16210.3.109.162
16410.3.109.163/3210.3.109.163 – 10.3.109.16310.3.109.163
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16810.3.109.167/3210.3.109.167 – 10.3.109.16710.3.109.167
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17210.3.109.171/3210.3.109.171 – 10.3.109.17110.3.109.171
17310.3.109.172/3210.3.109.172 – 10.3.109.17210.3.109.172
17410.3.109.173/3210.3.109.173 – 10.3.109.17310.3.109.173
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22010.3.109.219/3210.3.109.219 – 10.3.109.21910.3.109.219
22110.3.109.220/3210.3.109.220 – 10.3.109.22010.3.109.220
22210.3.109.221/3210.3.109.221 – 10.3.109.22110.3.109.221
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22910.3.109.228/3210.3.109.228 – 10.3.109.22810.3.109.228
23010.3.109.229/3210.3.109.229 – 10.3.109.22910.3.109.229
23110.3.109.230/3210.3.109.230 – 10.3.109.23010.3.109.230
23210.3.109.231/3210.3.109.231 – 10.3.109.23110.3.109.231
23310.3.109.232/3210.3.109.232 – 10.3.109.23210.3.109.232
23410.3.109.233/3210.3.109.233 – 10.3.109.23310.3.109.233
23510.3.109.234/3210.3.109.234 – 10.3.109.23410.3.109.234
23610.3.109.235/3210.3.109.235 – 10.3.109.23510.3.109.235
23710.3.109.236/3210.3.109.236 – 10.3.109.23610.3.109.236
23810.3.109.237/3210.3.109.237 – 10.3.109.23710.3.109.237
23910.3.109.238/3210.3.109.238 – 10.3.109.23810.3.109.238
24010.3.109.239/3210.3.109.239 – 10.3.109.23910.3.109.239
24110.3.109.240/3210.3.109.240 – 10.3.109.24010.3.109.240
24210.3.109.241/3210.3.109.241 – 10.3.109.24110.3.109.241
24310.3.109.242/3210.3.109.242 – 10.3.109.24210.3.109.242
24410.3.109.243/3210.3.109.243 – 10.3.109.24310.3.109.243
24510.3.109.244/3210.3.109.244 – 10.3.109.24410.3.109.244
24610.3.109.245/3210.3.109.245 – 10.3.109.24510.3.109.245
24710.3.109.246/3210.3.109.246 – 10.3.109.24610.3.109.246
24810.3.109.247/3210.3.109.247 – 10.3.109.24710.3.109.247
24910.3.109.248/3210.3.109.248 – 10.3.109.24810.3.109.248
25010.3.109.249/3210.3.109.249 – 10.3.109.24910.3.109.249
25110.3.109.250/3210.3.109.250 – 10.3.109.25010.3.109.250
25210.3.109.251/3210.3.109.251 – 10.3.109.25110.3.109.251
25310.3.109.252/3210.3.109.252 – 10.3.109.25210.3.109.252
25410.3.109.253/3210.3.109.253 – 10.3.109.25310.3.109.253
25510.3.109.254/3210.3.109.254 – 10.3.109.25410.3.109.254
25610.3.109.255/3210.3.109.255 – 10.3.109.25510.3.109.255
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 →