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)10.44.65.0/24
network10.44.65.0/24
broadcast10.44.65.255
first host10.44.65.1
last host10.44.65.254
subnet mask255.255.255.0
wildcard0.0.0.255
addresses256
usable hosts254
classA
ipcalc 10.44.65.0/24
address00001010.00101100.01000001.00000000
subnet mask11111111.11111111.11111111.00000000
network00001010.00101100.01000001.00000000
broadcast00001010.00101100.01000001.11111111
green = network part, grey = host part
hex0x0a2c4100
decimal170672384
reverse dns0.65.44.10.in-addr.arpa
ipv4-mapped::ffff:a2c:4100

/24 split into /31 · 128 subnets

close ×
#networkhost rangebroadcast
110.44.65.0/3110.44.65.0 – 10.44.65.110.44.65.1
210.44.65.2/3110.44.65.2 – 10.44.65.310.44.65.3
310.44.65.4/3110.44.65.4 – 10.44.65.510.44.65.5
410.44.65.6/3110.44.65.6 – 10.44.65.710.44.65.7
510.44.65.8/3110.44.65.8 – 10.44.65.910.44.65.9
610.44.65.10/3110.44.65.10 – 10.44.65.1110.44.65.11
710.44.65.12/3110.44.65.12 – 10.44.65.1310.44.65.13
810.44.65.14/3110.44.65.14 – 10.44.65.1510.44.65.15
910.44.65.16/3110.44.65.16 – 10.44.65.1710.44.65.17
1010.44.65.18/3110.44.65.18 – 10.44.65.1910.44.65.19
1110.44.65.20/3110.44.65.20 – 10.44.65.2110.44.65.21
1210.44.65.22/3110.44.65.22 – 10.44.65.2310.44.65.23
1310.44.65.24/3110.44.65.24 – 10.44.65.2510.44.65.25
1410.44.65.26/3110.44.65.26 – 10.44.65.2710.44.65.27
1510.44.65.28/3110.44.65.28 – 10.44.65.2910.44.65.29
1610.44.65.30/3110.44.65.30 – 10.44.65.3110.44.65.31
1710.44.65.32/3110.44.65.32 – 10.44.65.3310.44.65.33
1810.44.65.34/3110.44.65.34 – 10.44.65.3510.44.65.35
1910.44.65.36/3110.44.65.36 – 10.44.65.3710.44.65.37
2010.44.65.38/3110.44.65.38 – 10.44.65.3910.44.65.39
2110.44.65.40/3110.44.65.40 – 10.44.65.4110.44.65.41
2210.44.65.42/3110.44.65.42 – 10.44.65.4310.44.65.43
2310.44.65.44/3110.44.65.44 – 10.44.65.4510.44.65.45
2410.44.65.46/3110.44.65.46 – 10.44.65.4710.44.65.47
2510.44.65.48/3110.44.65.48 – 10.44.65.4910.44.65.49
2610.44.65.50/3110.44.65.50 – 10.44.65.5110.44.65.51
2710.44.65.52/3110.44.65.52 – 10.44.65.5310.44.65.53
2810.44.65.54/3110.44.65.54 – 10.44.65.5510.44.65.55
2910.44.65.56/3110.44.65.56 – 10.44.65.5710.44.65.57
3010.44.65.58/3110.44.65.58 – 10.44.65.5910.44.65.59
3110.44.65.60/3110.44.65.60 – 10.44.65.6110.44.65.61
3210.44.65.62/3110.44.65.62 – 10.44.65.6310.44.65.63
3310.44.65.64/3110.44.65.64 – 10.44.65.6510.44.65.65
3410.44.65.66/3110.44.65.66 – 10.44.65.6710.44.65.67
3510.44.65.68/3110.44.65.68 – 10.44.65.6910.44.65.69
3610.44.65.70/3110.44.65.70 – 10.44.65.7110.44.65.71
3710.44.65.72/3110.44.65.72 – 10.44.65.7310.44.65.73
3810.44.65.74/3110.44.65.74 – 10.44.65.7510.44.65.75
3910.44.65.76/3110.44.65.76 – 10.44.65.7710.44.65.77
4010.44.65.78/3110.44.65.78 – 10.44.65.7910.44.65.79
4110.44.65.80/3110.44.65.80 – 10.44.65.8110.44.65.81
4210.44.65.82/3110.44.65.82 – 10.44.65.8310.44.65.83
4310.44.65.84/3110.44.65.84 – 10.44.65.8510.44.65.85
4410.44.65.86/3110.44.65.86 – 10.44.65.8710.44.65.87
4510.44.65.88/3110.44.65.88 – 10.44.65.8910.44.65.89
4610.44.65.90/3110.44.65.90 – 10.44.65.9110.44.65.91
4710.44.65.92/3110.44.65.92 – 10.44.65.9310.44.65.93
4810.44.65.94/3110.44.65.94 – 10.44.65.9510.44.65.95
4910.44.65.96/3110.44.65.96 – 10.44.65.9710.44.65.97
5010.44.65.98/3110.44.65.98 – 10.44.65.9910.44.65.99
5110.44.65.100/3110.44.65.100 – 10.44.65.10110.44.65.101
5210.44.65.102/3110.44.65.102 – 10.44.65.10310.44.65.103
5310.44.65.104/3110.44.65.104 – 10.44.65.10510.44.65.105
5410.44.65.106/3110.44.65.106 – 10.44.65.10710.44.65.107
5510.44.65.108/3110.44.65.108 – 10.44.65.10910.44.65.109
5610.44.65.110/3110.44.65.110 – 10.44.65.11110.44.65.111
5710.44.65.112/3110.44.65.112 – 10.44.65.11310.44.65.113
5810.44.65.114/3110.44.65.114 – 10.44.65.11510.44.65.115
5910.44.65.116/3110.44.65.116 – 10.44.65.11710.44.65.117
6010.44.65.118/3110.44.65.118 – 10.44.65.11910.44.65.119
6110.44.65.120/3110.44.65.120 – 10.44.65.12110.44.65.121
6210.44.65.122/3110.44.65.122 – 10.44.65.12310.44.65.123
6310.44.65.124/3110.44.65.124 – 10.44.65.12510.44.65.125
6410.44.65.126/3110.44.65.126 – 10.44.65.12710.44.65.127
6510.44.65.128/3110.44.65.128 – 10.44.65.12910.44.65.129
6610.44.65.130/3110.44.65.130 – 10.44.65.13110.44.65.131
6710.44.65.132/3110.44.65.132 – 10.44.65.13310.44.65.133
6810.44.65.134/3110.44.65.134 – 10.44.65.13510.44.65.135
6910.44.65.136/3110.44.65.136 – 10.44.65.13710.44.65.137
7010.44.65.138/3110.44.65.138 – 10.44.65.13910.44.65.139
7110.44.65.140/3110.44.65.140 – 10.44.65.14110.44.65.141
7210.44.65.142/3110.44.65.142 – 10.44.65.14310.44.65.143
7310.44.65.144/3110.44.65.144 – 10.44.65.14510.44.65.145
7410.44.65.146/3110.44.65.146 – 10.44.65.14710.44.65.147
7510.44.65.148/3110.44.65.148 – 10.44.65.14910.44.65.149
7610.44.65.150/3110.44.65.150 – 10.44.65.15110.44.65.151
7710.44.65.152/3110.44.65.152 – 10.44.65.15310.44.65.153
7810.44.65.154/3110.44.65.154 – 10.44.65.15510.44.65.155
7910.44.65.156/3110.44.65.156 – 10.44.65.15710.44.65.157
8010.44.65.158/3110.44.65.158 – 10.44.65.15910.44.65.159
8110.44.65.160/3110.44.65.160 – 10.44.65.16110.44.65.161
8210.44.65.162/3110.44.65.162 – 10.44.65.16310.44.65.163
8310.44.65.164/3110.44.65.164 – 10.44.65.16510.44.65.165
8410.44.65.166/3110.44.65.166 – 10.44.65.16710.44.65.167
8510.44.65.168/3110.44.65.168 – 10.44.65.16910.44.65.169
8610.44.65.170/3110.44.65.170 – 10.44.65.17110.44.65.171
8710.44.65.172/3110.44.65.172 – 10.44.65.17310.44.65.173
8810.44.65.174/3110.44.65.174 – 10.44.65.17510.44.65.175
8910.44.65.176/3110.44.65.176 – 10.44.65.17710.44.65.177
9010.44.65.178/3110.44.65.178 – 10.44.65.17910.44.65.179
9110.44.65.180/3110.44.65.180 – 10.44.65.18110.44.65.181
9210.44.65.182/3110.44.65.182 – 10.44.65.18310.44.65.183
9310.44.65.184/3110.44.65.184 – 10.44.65.18510.44.65.185
9410.44.65.186/3110.44.65.186 – 10.44.65.18710.44.65.187
9510.44.65.188/3110.44.65.188 – 10.44.65.18910.44.65.189
9610.44.65.190/3110.44.65.190 – 10.44.65.19110.44.65.191
9710.44.65.192/3110.44.65.192 – 10.44.65.19310.44.65.193
9810.44.65.194/3110.44.65.194 – 10.44.65.19510.44.65.195
9910.44.65.196/3110.44.65.196 – 10.44.65.19710.44.65.197
10010.44.65.198/3110.44.65.198 – 10.44.65.19910.44.65.199
10110.44.65.200/3110.44.65.200 – 10.44.65.20110.44.65.201
10210.44.65.202/3110.44.65.202 – 10.44.65.20310.44.65.203
10310.44.65.204/3110.44.65.204 – 10.44.65.20510.44.65.205
10410.44.65.206/3110.44.65.206 – 10.44.65.20710.44.65.207
10510.44.65.208/3110.44.65.208 – 10.44.65.20910.44.65.209
10610.44.65.210/3110.44.65.210 – 10.44.65.21110.44.65.211
10710.44.65.212/3110.44.65.212 – 10.44.65.21310.44.65.213
10810.44.65.214/3110.44.65.214 – 10.44.65.21510.44.65.215
10910.44.65.216/3110.44.65.216 – 10.44.65.21710.44.65.217
11010.44.65.218/3110.44.65.218 – 10.44.65.21910.44.65.219
11110.44.65.220/3110.44.65.220 – 10.44.65.22110.44.65.221
11210.44.65.222/3110.44.65.222 – 10.44.65.22310.44.65.223
11310.44.65.224/3110.44.65.224 – 10.44.65.22510.44.65.225
11410.44.65.226/3110.44.65.226 – 10.44.65.22710.44.65.227
11510.44.65.228/3110.44.65.228 – 10.44.65.22910.44.65.229
11610.44.65.230/3110.44.65.230 – 10.44.65.23110.44.65.231
11710.44.65.232/3110.44.65.232 – 10.44.65.23310.44.65.233
11810.44.65.234/3110.44.65.234 – 10.44.65.23510.44.65.235
11910.44.65.236/3110.44.65.236 – 10.44.65.23710.44.65.237
12010.44.65.238/3110.44.65.238 – 10.44.65.23910.44.65.239
12110.44.65.240/3110.44.65.240 – 10.44.65.24110.44.65.241
12210.44.65.242/3110.44.65.242 – 10.44.65.24310.44.65.243
12310.44.65.244/3110.44.65.244 – 10.44.65.24510.44.65.245
12410.44.65.246/3110.44.65.246 – 10.44.65.24710.44.65.247
12510.44.65.248/3110.44.65.248 – 10.44.65.24910.44.65.249
12610.44.65.250/3110.44.65.250 – 10.44.65.25110.44.65.251
12710.44.65.252/3110.44.65.252 – 10.44.65.25310.44.65.253
12810.44.65.254/3110.44.65.254 – 10.44.65.25510.44.65.255
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 →