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)10.7.85.0/24
network10.7.85.0/24
broadcast10.7.85.255
first host10.7.85.1
last host10.7.85.254
subnet mask255.255.255.0
wildcard0.0.0.255
addresses256
usable hosts254
classA
ipcalc 10.7.85.0/24
address00001010.00000111.01010101.00000000
subnet mask11111111.11111111.11111111.00000000
network00001010.00000111.01010101.00000000
broadcast00001010.00000111.01010101.11111111
green = network part, grey = host part
hex0x0a075500
decimal168252672
reverse dns0.85.7.10.in-addr.arpa
ipv4-mapped::ffff:a07:5500

/24 split into /32 · 256 subnets

close ×
#networkhost rangebroadcast
110.7.85.0/3210.7.85.0 – 10.7.85.010.7.85.0
210.7.85.1/3210.7.85.1 – 10.7.85.110.7.85.1
310.7.85.2/3210.7.85.2 – 10.7.85.210.7.85.2
410.7.85.3/3210.7.85.3 – 10.7.85.310.7.85.3
510.7.85.4/3210.7.85.4 – 10.7.85.410.7.85.4
610.7.85.5/3210.7.85.5 – 10.7.85.510.7.85.5
710.7.85.6/3210.7.85.6 – 10.7.85.610.7.85.6
810.7.85.7/3210.7.85.7 – 10.7.85.710.7.85.7
910.7.85.8/3210.7.85.8 – 10.7.85.810.7.85.8
1010.7.85.9/3210.7.85.9 – 10.7.85.910.7.85.9
1110.7.85.10/3210.7.85.10 – 10.7.85.1010.7.85.10
1210.7.85.11/3210.7.85.11 – 10.7.85.1110.7.85.11
1310.7.85.12/3210.7.85.12 – 10.7.85.1210.7.85.12
1410.7.85.13/3210.7.85.13 – 10.7.85.1310.7.85.13
1510.7.85.14/3210.7.85.14 – 10.7.85.1410.7.85.14
1610.7.85.15/3210.7.85.15 – 10.7.85.1510.7.85.15
1710.7.85.16/3210.7.85.16 – 10.7.85.1610.7.85.16
1810.7.85.17/3210.7.85.17 – 10.7.85.1710.7.85.17
1910.7.85.18/3210.7.85.18 – 10.7.85.1810.7.85.18
2010.7.85.19/3210.7.85.19 – 10.7.85.1910.7.85.19
2110.7.85.20/3210.7.85.20 – 10.7.85.2010.7.85.20
2210.7.85.21/3210.7.85.21 – 10.7.85.2110.7.85.21
2310.7.85.22/3210.7.85.22 – 10.7.85.2210.7.85.22
2410.7.85.23/3210.7.85.23 – 10.7.85.2310.7.85.23
2510.7.85.24/3210.7.85.24 – 10.7.85.2410.7.85.24
2610.7.85.25/3210.7.85.25 – 10.7.85.2510.7.85.25
2710.7.85.26/3210.7.85.26 – 10.7.85.2610.7.85.26
2810.7.85.27/3210.7.85.27 – 10.7.85.2710.7.85.27
2910.7.85.28/3210.7.85.28 – 10.7.85.2810.7.85.28
3010.7.85.29/3210.7.85.29 – 10.7.85.2910.7.85.29
3110.7.85.30/3210.7.85.30 – 10.7.85.3010.7.85.30
3210.7.85.31/3210.7.85.31 – 10.7.85.3110.7.85.31
3310.7.85.32/3210.7.85.32 – 10.7.85.3210.7.85.32
3410.7.85.33/3210.7.85.33 – 10.7.85.3310.7.85.33
3510.7.85.34/3210.7.85.34 – 10.7.85.3410.7.85.34
3610.7.85.35/3210.7.85.35 – 10.7.85.3510.7.85.35
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3910.7.85.38/3210.7.85.38 – 10.7.85.3810.7.85.38
4010.7.85.39/3210.7.85.39 – 10.7.85.3910.7.85.39
4110.7.85.40/3210.7.85.40 – 10.7.85.4010.7.85.40
4210.7.85.41/3210.7.85.41 – 10.7.85.4110.7.85.41
4310.7.85.42/3210.7.85.42 – 10.7.85.4210.7.85.42
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4810.7.85.47/3210.7.85.47 – 10.7.85.4710.7.85.47
4910.7.85.48/3210.7.85.48 – 10.7.85.4810.7.85.48
5010.7.85.49/3210.7.85.49 – 10.7.85.4910.7.85.49
5110.7.85.50/3210.7.85.50 – 10.7.85.5010.7.85.50
5210.7.85.51/3210.7.85.51 – 10.7.85.5110.7.85.51
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5610.7.85.55/3210.7.85.55 – 10.7.85.5510.7.85.55
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5910.7.85.58/3210.7.85.58 – 10.7.85.5810.7.85.58
6010.7.85.59/3210.7.85.59 – 10.7.85.5910.7.85.59
6110.7.85.60/3210.7.85.60 – 10.7.85.6010.7.85.60
6210.7.85.61/3210.7.85.61 – 10.7.85.6110.7.85.61
6310.7.85.62/3210.7.85.62 – 10.7.85.6210.7.85.62
6410.7.85.63/3210.7.85.63 – 10.7.85.6310.7.85.63
6510.7.85.64/3210.7.85.64 – 10.7.85.6410.7.85.64
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6910.7.85.68/3210.7.85.68 – 10.7.85.6810.7.85.68
7010.7.85.69/3210.7.85.69 – 10.7.85.6910.7.85.69
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7710.7.85.76/3210.7.85.76 – 10.7.85.7610.7.85.76
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7910.7.85.78/3210.7.85.78 – 10.7.85.7810.7.85.78
8010.7.85.79/3210.7.85.79 – 10.7.85.7910.7.85.79
8110.7.85.80/3210.7.85.80 – 10.7.85.8010.7.85.80
8210.7.85.81/3210.7.85.81 – 10.7.85.8110.7.85.81
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8410.7.85.83/3210.7.85.83 – 10.7.85.8310.7.85.83
8510.7.85.84/3210.7.85.84 – 10.7.85.8410.7.85.84
8610.7.85.85/3210.7.85.85 – 10.7.85.8510.7.85.85
8710.7.85.86/3210.7.85.86 – 10.7.85.8610.7.85.86
8810.7.85.87/3210.7.85.87 – 10.7.85.8710.7.85.87
8910.7.85.88/3210.7.85.88 – 10.7.85.8810.7.85.88
9010.7.85.89/3210.7.85.89 – 10.7.85.8910.7.85.89
9110.7.85.90/3210.7.85.90 – 10.7.85.9010.7.85.90
9210.7.85.91/3210.7.85.91 – 10.7.85.9110.7.85.91
9310.7.85.92/3210.7.85.92 – 10.7.85.9210.7.85.92
9410.7.85.93/3210.7.85.93 – 10.7.85.9310.7.85.93
9510.7.85.94/3210.7.85.94 – 10.7.85.9410.7.85.94
9610.7.85.95/3210.7.85.95 – 10.7.85.9510.7.85.95
9710.7.85.96/3210.7.85.96 – 10.7.85.9610.7.85.96
9810.7.85.97/3210.7.85.97 – 10.7.85.9710.7.85.97
9910.7.85.98/3210.7.85.98 – 10.7.85.9810.7.85.98
10010.7.85.99/3210.7.85.99 – 10.7.85.9910.7.85.99
10110.7.85.100/3210.7.85.100 – 10.7.85.10010.7.85.100
10210.7.85.101/3210.7.85.101 – 10.7.85.10110.7.85.101
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10410.7.85.103/3210.7.85.103 – 10.7.85.10310.7.85.103
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10610.7.85.105/3210.7.85.105 – 10.7.85.10510.7.85.105
10710.7.85.106/3210.7.85.106 – 10.7.85.10610.7.85.106
10810.7.85.107/3210.7.85.107 – 10.7.85.10710.7.85.107
10910.7.85.108/3210.7.85.108 – 10.7.85.10810.7.85.108
11010.7.85.109/3210.7.85.109 – 10.7.85.10910.7.85.109
11110.7.85.110/3210.7.85.110 – 10.7.85.11010.7.85.110
11210.7.85.111/3210.7.85.111 – 10.7.85.11110.7.85.111
11310.7.85.112/3210.7.85.112 – 10.7.85.11210.7.85.112
11410.7.85.113/3210.7.85.113 – 10.7.85.11310.7.85.113
11510.7.85.114/3210.7.85.114 – 10.7.85.11410.7.85.114
11610.7.85.115/3210.7.85.115 – 10.7.85.11510.7.85.115
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11810.7.85.117/3210.7.85.117 – 10.7.85.11710.7.85.117
11910.7.85.118/3210.7.85.118 – 10.7.85.11810.7.85.118
12010.7.85.119/3210.7.85.119 – 10.7.85.11910.7.85.119
12110.7.85.120/3210.7.85.120 – 10.7.85.12010.7.85.120
12210.7.85.121/3210.7.85.121 – 10.7.85.12110.7.85.121
12310.7.85.122/3210.7.85.122 – 10.7.85.12210.7.85.122
12410.7.85.123/3210.7.85.123 – 10.7.85.12310.7.85.123
12510.7.85.124/3210.7.85.124 – 10.7.85.12410.7.85.124
12610.7.85.125/3210.7.85.125 – 10.7.85.12510.7.85.125
12710.7.85.126/3210.7.85.126 – 10.7.85.12610.7.85.126
12810.7.85.127/3210.7.85.127 – 10.7.85.12710.7.85.127
12910.7.85.128/3210.7.85.128 – 10.7.85.12810.7.85.128
13010.7.85.129/3210.7.85.129 – 10.7.85.12910.7.85.129
13110.7.85.130/3210.7.85.130 – 10.7.85.13010.7.85.130
13210.7.85.131/3210.7.85.131 – 10.7.85.13110.7.85.131
13310.7.85.132/3210.7.85.132 – 10.7.85.13210.7.85.132
13410.7.85.133/3210.7.85.133 – 10.7.85.13310.7.85.133
13510.7.85.134/3210.7.85.134 – 10.7.85.13410.7.85.134
13610.7.85.135/3210.7.85.135 – 10.7.85.13510.7.85.135
13710.7.85.136/3210.7.85.136 – 10.7.85.13610.7.85.136
13810.7.85.137/3210.7.85.137 – 10.7.85.13710.7.85.137
13910.7.85.138/3210.7.85.138 – 10.7.85.13810.7.85.138
14010.7.85.139/3210.7.85.139 – 10.7.85.13910.7.85.139
14110.7.85.140/3210.7.85.140 – 10.7.85.14010.7.85.140
14210.7.85.141/3210.7.85.141 – 10.7.85.14110.7.85.141
14310.7.85.142/3210.7.85.142 – 10.7.85.14210.7.85.142
14410.7.85.143/3210.7.85.143 – 10.7.85.14310.7.85.143
14510.7.85.144/3210.7.85.144 – 10.7.85.14410.7.85.144
14610.7.85.145/3210.7.85.145 – 10.7.85.14510.7.85.145
14710.7.85.146/3210.7.85.146 – 10.7.85.14610.7.85.146
14810.7.85.147/3210.7.85.147 – 10.7.85.14710.7.85.147
14910.7.85.148/3210.7.85.148 – 10.7.85.14810.7.85.148
15010.7.85.149/3210.7.85.149 – 10.7.85.14910.7.85.149
15110.7.85.150/3210.7.85.150 – 10.7.85.15010.7.85.150
15210.7.85.151/3210.7.85.151 – 10.7.85.15110.7.85.151
15310.7.85.152/3210.7.85.152 – 10.7.85.15210.7.85.152
15410.7.85.153/3210.7.85.153 – 10.7.85.15310.7.85.153
15510.7.85.154/3210.7.85.154 – 10.7.85.15410.7.85.154
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15710.7.85.156/3210.7.85.156 – 10.7.85.15610.7.85.156
15810.7.85.157/3210.7.85.157 – 10.7.85.15710.7.85.157
15910.7.85.158/3210.7.85.158 – 10.7.85.15810.7.85.158
16010.7.85.159/3210.7.85.159 – 10.7.85.15910.7.85.159
16110.7.85.160/3210.7.85.160 – 10.7.85.16010.7.85.160
16210.7.85.161/3210.7.85.161 – 10.7.85.16110.7.85.161
16310.7.85.162/3210.7.85.162 – 10.7.85.16210.7.85.162
16410.7.85.163/3210.7.85.163 – 10.7.85.16310.7.85.163
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17010.7.85.169/3210.7.85.169 – 10.7.85.16910.7.85.169
17110.7.85.170/3210.7.85.170 – 10.7.85.17010.7.85.170
17210.7.85.171/3210.7.85.171 – 10.7.85.17110.7.85.171
17310.7.85.172/3210.7.85.172 – 10.7.85.17210.7.85.172
17410.7.85.173/3210.7.85.173 – 10.7.85.17310.7.85.173
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21910.7.85.218/3210.7.85.218 – 10.7.85.21810.7.85.218
22010.7.85.219/3210.7.85.219 – 10.7.85.21910.7.85.219
22110.7.85.220/3210.7.85.220 – 10.7.85.22010.7.85.220
22210.7.85.221/3210.7.85.221 – 10.7.85.22110.7.85.221
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22910.7.85.228/3210.7.85.228 – 10.7.85.22810.7.85.228
23010.7.85.229/3210.7.85.229 – 10.7.85.22910.7.85.229
23110.7.85.230/3210.7.85.230 – 10.7.85.23010.7.85.230
23210.7.85.231/3210.7.85.231 – 10.7.85.23110.7.85.231
23310.7.85.232/3210.7.85.232 – 10.7.85.23210.7.85.232
23410.7.85.233/3210.7.85.233 – 10.7.85.23310.7.85.233
23510.7.85.234/3210.7.85.234 – 10.7.85.23410.7.85.234
23610.7.85.235/3210.7.85.235 – 10.7.85.23510.7.85.235
23710.7.85.236/3210.7.85.236 – 10.7.85.23610.7.85.236
23810.7.85.237/3210.7.85.237 – 10.7.85.23710.7.85.237
23910.7.85.238/3210.7.85.238 – 10.7.85.23810.7.85.238
24010.7.85.239/3210.7.85.239 – 10.7.85.23910.7.85.239
24110.7.85.240/3210.7.85.240 – 10.7.85.24010.7.85.240
24210.7.85.241/3210.7.85.241 – 10.7.85.24110.7.85.241
24310.7.85.242/3210.7.85.242 – 10.7.85.24210.7.85.242
24410.7.85.243/3210.7.85.243 – 10.7.85.24310.7.85.243
24510.7.85.244/3210.7.85.244 – 10.7.85.24410.7.85.244
24610.7.85.245/3210.7.85.245 – 10.7.85.24510.7.85.245
24710.7.85.246/3210.7.85.246 – 10.7.85.24610.7.85.246
24810.7.85.247/3210.7.85.247 – 10.7.85.24710.7.85.247
24910.7.85.248/3210.7.85.248 – 10.7.85.24810.7.85.248
25010.7.85.249/3210.7.85.249 – 10.7.85.24910.7.85.249
25110.7.85.250/3210.7.85.250 – 10.7.85.25010.7.85.250
25210.7.85.251/3210.7.85.251 – 10.7.85.25110.7.85.251
25310.7.85.252/3210.7.85.252 – 10.7.85.25210.7.85.252
25410.7.85.253/3210.7.85.253 – 10.7.85.25310.7.85.253
25510.7.85.254/3210.7.85.254 – 10.7.85.25410.7.85.254
25610.7.85.255/3210.7.85.255 – 10.7.85.25510.7.85.255
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 →