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)10.7.63.0/24
network10.7.63.0/24
broadcast10.7.63.255
first host10.7.63.1
last host10.7.63.254
subnet mask255.255.255.0
wildcard0.0.0.255
addresses256
usable hosts254
classA
ipcalc 10.7.63.0/24
address00001010.00000111.00111111.00000000
subnet mask11111111.11111111.11111111.00000000
network00001010.00000111.00111111.00000000
broadcast00001010.00000111.00111111.11111111
green = network part, grey = host part
hex0x0a073f00
decimal168247040
reverse dns0.63.7.10.in-addr.arpa
ipv4-mapped::ffff:a07:3f00

/24 split into /32 · 256 subnets

close ×
#networkhost rangebroadcast
110.7.63.0/3210.7.63.0 – 10.7.63.010.7.63.0
210.7.63.1/3210.7.63.1 – 10.7.63.110.7.63.1
310.7.63.2/3210.7.63.2 – 10.7.63.210.7.63.2
410.7.63.3/3210.7.63.3 – 10.7.63.310.7.63.3
510.7.63.4/3210.7.63.4 – 10.7.63.410.7.63.4
610.7.63.5/3210.7.63.5 – 10.7.63.510.7.63.5
710.7.63.6/3210.7.63.6 – 10.7.63.610.7.63.6
810.7.63.7/3210.7.63.7 – 10.7.63.710.7.63.7
910.7.63.8/3210.7.63.8 – 10.7.63.810.7.63.8
1010.7.63.9/3210.7.63.9 – 10.7.63.910.7.63.9
1110.7.63.10/3210.7.63.10 – 10.7.63.1010.7.63.10
1210.7.63.11/3210.7.63.11 – 10.7.63.1110.7.63.11
1310.7.63.12/3210.7.63.12 – 10.7.63.1210.7.63.12
1410.7.63.13/3210.7.63.13 – 10.7.63.1310.7.63.13
1510.7.63.14/3210.7.63.14 – 10.7.63.1410.7.63.14
1610.7.63.15/3210.7.63.15 – 10.7.63.1510.7.63.15
1710.7.63.16/3210.7.63.16 – 10.7.63.1610.7.63.16
1810.7.63.17/3210.7.63.17 – 10.7.63.1710.7.63.17
1910.7.63.18/3210.7.63.18 – 10.7.63.1810.7.63.18
2010.7.63.19/3210.7.63.19 – 10.7.63.1910.7.63.19
2110.7.63.20/3210.7.63.20 – 10.7.63.2010.7.63.20
2210.7.63.21/3210.7.63.21 – 10.7.63.2110.7.63.21
2310.7.63.22/3210.7.63.22 – 10.7.63.2210.7.63.22
2410.7.63.23/3210.7.63.23 – 10.7.63.2310.7.63.23
2510.7.63.24/3210.7.63.24 – 10.7.63.2410.7.63.24
2610.7.63.25/3210.7.63.25 – 10.7.63.2510.7.63.25
2710.7.63.26/3210.7.63.26 – 10.7.63.2610.7.63.26
2810.7.63.27/3210.7.63.27 – 10.7.63.2710.7.63.27
2910.7.63.28/3210.7.63.28 – 10.7.63.2810.7.63.28
3010.7.63.29/3210.7.63.29 – 10.7.63.2910.7.63.29
3110.7.63.30/3210.7.63.30 – 10.7.63.3010.7.63.30
3210.7.63.31/3210.7.63.31 – 10.7.63.3110.7.63.31
3310.7.63.32/3210.7.63.32 – 10.7.63.3210.7.63.32
3410.7.63.33/3210.7.63.33 – 10.7.63.3310.7.63.33
3510.7.63.34/3210.7.63.34 – 10.7.63.3410.7.63.34
3610.7.63.35/3210.7.63.35 – 10.7.63.3510.7.63.35
3710.7.63.36/3210.7.63.36 – 10.7.63.3610.7.63.36
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3910.7.63.38/3210.7.63.38 – 10.7.63.3810.7.63.38
4010.7.63.39/3210.7.63.39 – 10.7.63.3910.7.63.39
4110.7.63.40/3210.7.63.40 – 10.7.63.4010.7.63.40
4210.7.63.41/3210.7.63.41 – 10.7.63.4110.7.63.41
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4410.7.63.43/3210.7.63.43 – 10.7.63.4310.7.63.43
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4610.7.63.45/3210.7.63.45 – 10.7.63.4510.7.63.45
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4910.7.63.48/3210.7.63.48 – 10.7.63.4810.7.63.48
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5110.7.63.50/3210.7.63.50 – 10.7.63.5010.7.63.50
5210.7.63.51/3210.7.63.51 – 10.7.63.5110.7.63.51
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5610.7.63.55/3210.7.63.55 – 10.7.63.5510.7.63.55
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5910.7.63.58/3210.7.63.58 – 10.7.63.5810.7.63.58
6010.7.63.59/3210.7.63.59 – 10.7.63.5910.7.63.59
6110.7.63.60/3210.7.63.60 – 10.7.63.6010.7.63.60
6210.7.63.61/3210.7.63.61 – 10.7.63.6110.7.63.61
6310.7.63.62/3210.7.63.62 – 10.7.63.6210.7.63.62
6410.7.63.63/3210.7.63.63 – 10.7.63.6310.7.63.63
6510.7.63.64/3210.7.63.64 – 10.7.63.6410.7.63.64
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6910.7.63.68/3210.7.63.68 – 10.7.63.6810.7.63.68
7010.7.63.69/3210.7.63.69 – 10.7.63.6910.7.63.69
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7910.7.63.78/3210.7.63.78 – 10.7.63.7810.7.63.78
8010.7.63.79/3210.7.63.79 – 10.7.63.7910.7.63.79
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8510.7.63.84/3210.7.63.84 – 10.7.63.8410.7.63.84
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8710.7.63.86/3210.7.63.86 – 10.7.63.8610.7.63.86
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8910.7.63.88/3210.7.63.88 – 10.7.63.8810.7.63.88
9010.7.63.89/3210.7.63.89 – 10.7.63.8910.7.63.89
9110.7.63.90/3210.7.63.90 – 10.7.63.9010.7.63.90
9210.7.63.91/3210.7.63.91 – 10.7.63.9110.7.63.91
9310.7.63.92/3210.7.63.92 – 10.7.63.9210.7.63.92
9410.7.63.93/3210.7.63.93 – 10.7.63.9310.7.63.93
9510.7.63.94/3210.7.63.94 – 10.7.63.9410.7.63.94
9610.7.63.95/3210.7.63.95 – 10.7.63.9510.7.63.95
9710.7.63.96/3210.7.63.96 – 10.7.63.9610.7.63.96
9810.7.63.97/3210.7.63.97 – 10.7.63.9710.7.63.97
9910.7.63.98/3210.7.63.98 – 10.7.63.9810.7.63.98
10010.7.63.99/3210.7.63.99 – 10.7.63.9910.7.63.99
10110.7.63.100/3210.7.63.100 – 10.7.63.10010.7.63.100
10210.7.63.101/3210.7.63.101 – 10.7.63.10110.7.63.101
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10410.7.63.103/3210.7.63.103 – 10.7.63.10310.7.63.103
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10710.7.63.106/3210.7.63.106 – 10.7.63.10610.7.63.106
10810.7.63.107/3210.7.63.107 – 10.7.63.10710.7.63.107
10910.7.63.108/3210.7.63.108 – 10.7.63.10810.7.63.108
11010.7.63.109/3210.7.63.109 – 10.7.63.10910.7.63.109
11110.7.63.110/3210.7.63.110 – 10.7.63.11010.7.63.110
11210.7.63.111/3210.7.63.111 – 10.7.63.11110.7.63.111
11310.7.63.112/3210.7.63.112 – 10.7.63.11210.7.63.112
11410.7.63.113/3210.7.63.113 – 10.7.63.11310.7.63.113
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12010.7.63.119/3210.7.63.119 – 10.7.63.11910.7.63.119
12110.7.63.120/3210.7.63.120 – 10.7.63.12010.7.63.120
12210.7.63.121/3210.7.63.121 – 10.7.63.12110.7.63.121
12310.7.63.122/3210.7.63.122 – 10.7.63.12210.7.63.122
12410.7.63.123/3210.7.63.123 – 10.7.63.12310.7.63.123
12510.7.63.124/3210.7.63.124 – 10.7.63.12410.7.63.124
12610.7.63.125/3210.7.63.125 – 10.7.63.12510.7.63.125
12710.7.63.126/3210.7.63.126 – 10.7.63.12610.7.63.126
12810.7.63.127/3210.7.63.127 – 10.7.63.12710.7.63.127
12910.7.63.128/3210.7.63.128 – 10.7.63.12810.7.63.128
13010.7.63.129/3210.7.63.129 – 10.7.63.12910.7.63.129
13110.7.63.130/3210.7.63.130 – 10.7.63.13010.7.63.130
13210.7.63.131/3210.7.63.131 – 10.7.63.13110.7.63.131
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13810.7.63.137/3210.7.63.137 – 10.7.63.13710.7.63.137
13910.7.63.138/3210.7.63.138 – 10.7.63.13810.7.63.138
14010.7.63.139/3210.7.63.139 – 10.7.63.13910.7.63.139
14110.7.63.140/3210.7.63.140 – 10.7.63.14010.7.63.140
14210.7.63.141/3210.7.63.141 – 10.7.63.14110.7.63.141
14310.7.63.142/3210.7.63.142 – 10.7.63.14210.7.63.142
14410.7.63.143/3210.7.63.143 – 10.7.63.14310.7.63.143
14510.7.63.144/3210.7.63.144 – 10.7.63.14410.7.63.144
14610.7.63.145/3210.7.63.145 – 10.7.63.14510.7.63.145
14710.7.63.146/3210.7.63.146 – 10.7.63.14610.7.63.146
14810.7.63.147/3210.7.63.147 – 10.7.63.14710.7.63.147
14910.7.63.148/3210.7.63.148 – 10.7.63.14810.7.63.148
15010.7.63.149/3210.7.63.149 – 10.7.63.14910.7.63.149
15110.7.63.150/3210.7.63.150 – 10.7.63.15010.7.63.150
15210.7.63.151/3210.7.63.151 – 10.7.63.15110.7.63.151
15310.7.63.152/3210.7.63.152 – 10.7.63.15210.7.63.152
15410.7.63.153/3210.7.63.153 – 10.7.63.15310.7.63.153
15510.7.63.154/3210.7.63.154 – 10.7.63.15410.7.63.154
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15710.7.63.156/3210.7.63.156 – 10.7.63.15610.7.63.156
15810.7.63.157/3210.7.63.157 – 10.7.63.15710.7.63.157
15910.7.63.158/3210.7.63.158 – 10.7.63.15810.7.63.158
16010.7.63.159/3210.7.63.159 – 10.7.63.15910.7.63.159
16110.7.63.160/3210.7.63.160 – 10.7.63.16010.7.63.160
16210.7.63.161/3210.7.63.161 – 10.7.63.16110.7.63.161
16310.7.63.162/3210.7.63.162 – 10.7.63.16210.7.63.162
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17210.7.63.171/3210.7.63.171 – 10.7.63.17110.7.63.171
17310.7.63.172/3210.7.63.172 – 10.7.63.17210.7.63.172
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22010.7.63.219/3210.7.63.219 – 10.7.63.21910.7.63.219
22110.7.63.220/3210.7.63.220 – 10.7.63.22010.7.63.220
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22910.7.63.228/3210.7.63.228 – 10.7.63.22810.7.63.228
23010.7.63.229/3210.7.63.229 – 10.7.63.22910.7.63.229
23110.7.63.230/3210.7.63.230 – 10.7.63.23010.7.63.230
23210.7.63.231/3210.7.63.231 – 10.7.63.23110.7.63.231
23310.7.63.232/3210.7.63.232 – 10.7.63.23210.7.63.232
23410.7.63.233/3210.7.63.233 – 10.7.63.23310.7.63.233
23510.7.63.234/3210.7.63.234 – 10.7.63.23410.7.63.234
23610.7.63.235/3210.7.63.235 – 10.7.63.23510.7.63.235
23710.7.63.236/3210.7.63.236 – 10.7.63.23610.7.63.236
23810.7.63.237/3210.7.63.237 – 10.7.63.23710.7.63.237
23910.7.63.238/3210.7.63.238 – 10.7.63.23810.7.63.238
24010.7.63.239/3210.7.63.239 – 10.7.63.23910.7.63.239
24110.7.63.240/3210.7.63.240 – 10.7.63.24010.7.63.240
24210.7.63.241/3210.7.63.241 – 10.7.63.24110.7.63.241
24310.7.63.242/3210.7.63.242 – 10.7.63.24210.7.63.242
24410.7.63.243/3210.7.63.243 – 10.7.63.24310.7.63.243
24510.7.63.244/3210.7.63.244 – 10.7.63.24410.7.63.244
24610.7.63.245/3210.7.63.245 – 10.7.63.24510.7.63.245
24710.7.63.246/3210.7.63.246 – 10.7.63.24610.7.63.246
24810.7.63.247/3210.7.63.247 – 10.7.63.24710.7.63.247
24910.7.63.248/3210.7.63.248 – 10.7.63.24810.7.63.248
25010.7.63.249/3210.7.63.249 – 10.7.63.24910.7.63.249
25110.7.63.250/3210.7.63.250 – 10.7.63.25010.7.63.250
25210.7.63.251/3210.7.63.251 – 10.7.63.25110.7.63.251
25310.7.63.252/3210.7.63.252 – 10.7.63.25210.7.63.252
25410.7.63.253/3210.7.63.253 – 10.7.63.25310.7.63.253
25510.7.63.254/3210.7.63.254 – 10.7.63.25410.7.63.254
25610.7.63.255/3210.7.63.255 – 10.7.63.25510.7.63.255
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 →