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.
private IP (RFC 1918)10.2.196.0/23
network10.2.196.0/23
broadcast10.2.197.255
first host10.2.196.1
last host10.2.197.254
subnet mask255.255.254.0
wildcard0.0.1.255
addresses512
usable hosts510
classA
ipcalc 10.2.196.0/23
address00001010.00000010.11000100.00000000
subnet mask11111111.11111111.11111110.00000000
network00001010.00000010.11000100.00000000
broadcast00001010.00000010.11000101.11111111
green = network part, grey = host part
hex0x0a02c400
decimal167953408
reverse dns0.196.2.10.in-addr.arpa
ipv4-mapped::ffff:a02:c400
/23 split into /30 · 128 subnets
close ×| # | network | host range | broadcast |
|---|---|---|---|
| 1 | 10.2.196.0/30 | 10.2.196.1 – 10.2.196.2 | 10.2.196.3 |
| 2 | 10.2.196.4/30 | 10.2.196.5 – 10.2.196.6 | 10.2.196.7 |
| 3 | 10.2.196.8/30 | 10.2.196.9 – 10.2.196.10 | 10.2.196.11 |
| 4 | 10.2.196.12/30 | 10.2.196.13 – 10.2.196.14 | 10.2.196.15 |
| 5 | 10.2.196.16/30 | 10.2.196.17 – 10.2.196.18 | 10.2.196.19 |
| 6 | 10.2.196.20/30 | 10.2.196.21 – 10.2.196.22 | 10.2.196.23 |
| 7 | 10.2.196.24/30 | 10.2.196.25 – 10.2.196.26 | 10.2.196.27 |
| 8 | 10.2.196.28/30 | 10.2.196.29 – 10.2.196.30 | 10.2.196.31 |
| 9 | 10.2.196.32/30 | 10.2.196.33 – 10.2.196.34 | 10.2.196.35 |
| 10 | 10.2.196.36/30 | 10.2.196.37 – 10.2.196.38 | 10.2.196.39 |
| 11 | 10.2.196.40/30 | 10.2.196.41 – 10.2.196.42 | 10.2.196.43 |
| 12 | 10.2.196.44/30 | 10.2.196.45 – 10.2.196.46 | 10.2.196.47 |
| 13 | 10.2.196.48/30 | 10.2.196.49 – 10.2.196.50 | 10.2.196.51 |
| 14 | 10.2.196.52/30 | 10.2.196.53 – 10.2.196.54 | 10.2.196.55 |
| 15 | 10.2.196.56/30 | 10.2.196.57 – 10.2.196.58 | 10.2.196.59 |
| 16 | 10.2.196.60/30 | 10.2.196.61 – 10.2.196.62 | 10.2.196.63 |
| 17 | 10.2.196.64/30 | 10.2.196.65 – 10.2.196.66 | 10.2.196.67 |
| 18 | 10.2.196.68/30 | 10.2.196.69 – 10.2.196.70 | 10.2.196.71 |
| 19 | 10.2.196.72/30 | 10.2.196.73 – 10.2.196.74 | 10.2.196.75 |
| 20 | 10.2.196.76/30 | 10.2.196.77 – 10.2.196.78 | 10.2.196.79 |
| 21 | 10.2.196.80/30 | 10.2.196.81 – 10.2.196.82 | 10.2.196.83 |
| 22 | 10.2.196.84/30 | 10.2.196.85 – 10.2.196.86 | 10.2.196.87 |
| 23 | 10.2.196.88/30 | 10.2.196.89 – 10.2.196.90 | 10.2.196.91 |
| 24 | 10.2.196.92/30 | 10.2.196.93 – 10.2.196.94 | 10.2.196.95 |
| 25 | 10.2.196.96/30 | 10.2.196.97 – 10.2.196.98 | 10.2.196.99 |
| 26 | 10.2.196.100/30 | 10.2.196.101 – 10.2.196.102 | 10.2.196.103 |
| 27 | 10.2.196.104/30 | 10.2.196.105 – 10.2.196.106 | 10.2.196.107 |
| 28 | 10.2.196.108/30 | 10.2.196.109 – 10.2.196.110 | 10.2.196.111 |
| 29 | 10.2.196.112/30 | 10.2.196.113 – 10.2.196.114 | 10.2.196.115 |
| 30 | 10.2.196.116/30 | 10.2.196.117 – 10.2.196.118 | 10.2.196.119 |
| 31 | 10.2.196.120/30 | 10.2.196.121 – 10.2.196.122 | 10.2.196.123 |
| 32 | 10.2.196.124/30 | 10.2.196.125 – 10.2.196.126 | 10.2.196.127 |
| 33 | 10.2.196.128/30 | 10.2.196.129 – 10.2.196.130 | 10.2.196.131 |
| 34 | 10.2.196.132/30 | 10.2.196.133 – 10.2.196.134 | 10.2.196.135 |
| 35 | 10.2.196.136/30 | 10.2.196.137 – 10.2.196.138 | 10.2.196.139 |
| 36 | 10.2.196.140/30 | 10.2.196.141 – 10.2.196.142 | 10.2.196.143 |
| 37 | 10.2.196.144/30 | 10.2.196.145 – 10.2.196.146 | 10.2.196.147 |
| 38 | 10.2.196.148/30 | 10.2.196.149 – 10.2.196.150 | 10.2.196.151 |
| 39 | 10.2.196.152/30 | 10.2.196.153 – 10.2.196.154 | 10.2.196.155 |
| 40 | 10.2.196.156/30 | 10.2.196.157 – 10.2.196.158 | 10.2.196.159 |
| 41 | 10.2.196.160/30 | 10.2.196.161 – 10.2.196.162 | 10.2.196.163 |
| 42 | 10.2.196.164/30 | 10.2.196.165 – 10.2.196.166 | 10.2.196.167 |
| 43 | 10.2.196.168/30 | 10.2.196.169 – 10.2.196.170 | 10.2.196.171 |
| 44 | 10.2.196.172/30 | 10.2.196.173 – 10.2.196.174 | 10.2.196.175 |
| 45 | 10.2.196.176/30 | 10.2.196.177 – 10.2.196.178 | 10.2.196.179 |
| 46 | 10.2.196.180/30 | 10.2.196.181 – 10.2.196.182 | 10.2.196.183 |
| 47 | 10.2.196.184/30 | 10.2.196.185 – 10.2.196.186 | 10.2.196.187 |
| 48 | 10.2.196.188/30 | 10.2.196.189 – 10.2.196.190 | 10.2.196.191 |
| 49 | 10.2.196.192/30 | 10.2.196.193 – 10.2.196.194 | 10.2.196.195 |
| 50 | 10.2.196.196/30 | 10.2.196.197 – 10.2.196.198 | 10.2.196.199 |
| 51 | 10.2.196.200/30 | 10.2.196.201 – 10.2.196.202 | 10.2.196.203 |
| 52 | 10.2.196.204/30 | 10.2.196.205 – 10.2.196.206 | 10.2.196.207 |
| 53 | 10.2.196.208/30 | 10.2.196.209 – 10.2.196.210 | 10.2.196.211 |
| 54 | 10.2.196.212/30 | 10.2.196.213 – 10.2.196.214 | 10.2.196.215 |
| 55 | 10.2.196.216/30 | 10.2.196.217 – 10.2.196.218 | 10.2.196.219 |
| 56 | 10.2.196.220/30 | 10.2.196.221 – 10.2.196.222 | 10.2.196.223 |
| 57 | 10.2.196.224/30 | 10.2.196.225 – 10.2.196.226 | 10.2.196.227 |
| 58 | 10.2.196.228/30 | 10.2.196.229 – 10.2.196.230 | 10.2.196.231 |
| 59 | 10.2.196.232/30 | 10.2.196.233 – 10.2.196.234 | 10.2.196.235 |
| 60 | 10.2.196.236/30 | 10.2.196.237 – 10.2.196.238 | 10.2.196.239 |
| 61 | 10.2.196.240/30 | 10.2.196.241 – 10.2.196.242 | 10.2.196.243 |
| 62 | 10.2.196.244/30 | 10.2.196.245 – 10.2.196.246 | 10.2.196.247 |
| 63 | 10.2.196.248/30 | 10.2.196.249 – 10.2.196.250 | 10.2.196.251 |
| 64 | 10.2.196.252/30 | 10.2.196.253 – 10.2.196.254 | 10.2.196.255 |
| 65 | 10.2.197.0/30 | 10.2.197.1 – 10.2.197.2 | 10.2.197.3 |
| 66 | 10.2.197.4/30 | 10.2.197.5 – 10.2.197.6 | 10.2.197.7 |
| 67 | 10.2.197.8/30 | 10.2.197.9 – 10.2.197.10 | 10.2.197.11 |
| 68 | 10.2.197.12/30 | 10.2.197.13 – 10.2.197.14 | 10.2.197.15 |
| 69 | 10.2.197.16/30 | 10.2.197.17 – 10.2.197.18 | 10.2.197.19 |
| 70 | 10.2.197.20/30 | 10.2.197.21 – 10.2.197.22 | 10.2.197.23 |
| 71 | 10.2.197.24/30 | 10.2.197.25 – 10.2.197.26 | 10.2.197.27 |
| 72 | 10.2.197.28/30 | 10.2.197.29 – 10.2.197.30 | 10.2.197.31 |
| 73 | 10.2.197.32/30 | 10.2.197.33 – 10.2.197.34 | 10.2.197.35 |
| 74 | 10.2.197.36/30 | 10.2.197.37 – 10.2.197.38 | 10.2.197.39 |
| 75 | 10.2.197.40/30 | 10.2.197.41 – 10.2.197.42 | 10.2.197.43 |
| 76 | 10.2.197.44/30 | 10.2.197.45 – 10.2.197.46 | 10.2.197.47 |
| 77 | 10.2.197.48/30 | 10.2.197.49 – 10.2.197.50 | 10.2.197.51 |
| 78 | 10.2.197.52/30 | 10.2.197.53 – 10.2.197.54 | 10.2.197.55 |
| 79 | 10.2.197.56/30 | 10.2.197.57 – 10.2.197.58 | 10.2.197.59 |
| 80 | 10.2.197.60/30 | 10.2.197.61 – 10.2.197.62 | 10.2.197.63 |
| 81 | 10.2.197.64/30 | 10.2.197.65 – 10.2.197.66 | 10.2.197.67 |
| 82 | 10.2.197.68/30 | 10.2.197.69 – 10.2.197.70 | 10.2.197.71 |
| 83 | 10.2.197.72/30 | 10.2.197.73 – 10.2.197.74 | 10.2.197.75 |
| 84 | 10.2.197.76/30 | 10.2.197.77 – 10.2.197.78 | 10.2.197.79 |
| 85 | 10.2.197.80/30 | 10.2.197.81 – 10.2.197.82 | 10.2.197.83 |
| 86 | 10.2.197.84/30 | 10.2.197.85 – 10.2.197.86 | 10.2.197.87 |
| 87 | 10.2.197.88/30 | 10.2.197.89 – 10.2.197.90 | 10.2.197.91 |
| 88 | 10.2.197.92/30 | 10.2.197.93 – 10.2.197.94 | 10.2.197.95 |
| 89 | 10.2.197.96/30 | 10.2.197.97 – 10.2.197.98 | 10.2.197.99 |
| 90 | 10.2.197.100/30 | 10.2.197.101 – 10.2.197.102 | 10.2.197.103 |
| 91 | 10.2.197.104/30 | 10.2.197.105 – 10.2.197.106 | 10.2.197.107 |
| 92 | 10.2.197.108/30 | 10.2.197.109 – 10.2.197.110 | 10.2.197.111 |
| 93 | 10.2.197.112/30 | 10.2.197.113 – 10.2.197.114 | 10.2.197.115 |
| 94 | 10.2.197.116/30 | 10.2.197.117 – 10.2.197.118 | 10.2.197.119 |
| 95 | 10.2.197.120/30 | 10.2.197.121 – 10.2.197.122 | 10.2.197.123 |
| 96 | 10.2.197.124/30 | 10.2.197.125 – 10.2.197.126 | 10.2.197.127 |
| 97 | 10.2.197.128/30 | 10.2.197.129 – 10.2.197.130 | 10.2.197.131 |
| 98 | 10.2.197.132/30 | 10.2.197.133 – 10.2.197.134 | 10.2.197.135 |
| 99 | 10.2.197.136/30 | 10.2.197.137 – 10.2.197.138 | 10.2.197.139 |
| 100 | 10.2.197.140/30 | 10.2.197.141 – 10.2.197.142 | 10.2.197.143 |
| 101 | 10.2.197.144/30 | 10.2.197.145 – 10.2.197.146 | 10.2.197.147 |
| 102 | 10.2.197.148/30 | 10.2.197.149 – 10.2.197.150 | 10.2.197.151 |
| 103 | 10.2.197.152/30 | 10.2.197.153 – 10.2.197.154 | 10.2.197.155 |
| 104 | 10.2.197.156/30 | 10.2.197.157 – 10.2.197.158 | 10.2.197.159 |
| 105 | 10.2.197.160/30 | 10.2.197.161 – 10.2.197.162 | 10.2.197.163 |
| 106 | 10.2.197.164/30 | 10.2.197.165 – 10.2.197.166 | 10.2.197.167 |
| 107 | 10.2.197.168/30 | 10.2.197.169 – 10.2.197.170 | 10.2.197.171 |
| 108 | 10.2.197.172/30 | 10.2.197.173 – 10.2.197.174 | 10.2.197.175 |
| 109 | 10.2.197.176/30 | 10.2.197.177 – 10.2.197.178 | 10.2.197.179 |
| 110 | 10.2.197.180/30 | 10.2.197.181 – 10.2.197.182 | 10.2.197.183 |
| 111 | 10.2.197.184/30 | 10.2.197.185 – 10.2.197.186 | 10.2.197.187 |
| 112 | 10.2.197.188/30 | 10.2.197.189 – 10.2.197.190 | 10.2.197.191 |
| 113 | 10.2.197.192/30 | 10.2.197.193 – 10.2.197.194 | 10.2.197.195 |
| 114 | 10.2.197.196/30 | 10.2.197.197 – 10.2.197.198 | 10.2.197.199 |
| 115 | 10.2.197.200/30 | 10.2.197.201 – 10.2.197.202 | 10.2.197.203 |
| 116 | 10.2.197.204/30 | 10.2.197.205 – 10.2.197.206 | 10.2.197.207 |
| 117 | 10.2.197.208/30 | 10.2.197.209 – 10.2.197.210 | 10.2.197.211 |
| 118 | 10.2.197.212/30 | 10.2.197.213 – 10.2.197.214 | 10.2.197.215 |
| 119 | 10.2.197.216/30 | 10.2.197.217 – 10.2.197.218 | 10.2.197.219 |
| 120 | 10.2.197.220/30 | 10.2.197.221 – 10.2.197.222 | 10.2.197.223 |
| 121 | 10.2.197.224/30 | 10.2.197.225 – 10.2.197.226 | 10.2.197.227 |
| 122 | 10.2.197.228/30 | 10.2.197.229 – 10.2.197.230 | 10.2.197.231 |
| 123 | 10.2.197.232/30 | 10.2.197.233 – 10.2.197.234 | 10.2.197.235 |
| 124 | 10.2.197.236/30 | 10.2.197.237 – 10.2.197.238 | 10.2.197.239 |
| 125 | 10.2.197.240/30 | 10.2.197.241 – 10.2.197.242 | 10.2.197.243 |
| 126 | 10.2.197.244/30 | 10.2.197.245 – 10.2.197.246 | 10.2.197.247 |
| 127 | 10.2.197.248/30 | 10.2.197.249 – 10.2.197.250 | 10.2.197.251 |
| 128 | 10.2.197.252/30 | 10.2.197.253 – 10.2.197.254 | 10.2.197.255 |
01 / table
IPv4 CIDR prefix table.
Click a prefix longer than your network to split it into subnets.
| prefix | subnet mask | addresses | hosts | in your /23 |
|---|---|---|---|---|
| /0 | 0.0.0.0 | 4,294,967,296 | 4,294,967,294 | - |
| /1 | 128.0.0.0 | 2,147,483,648 | 2,147,483,646 | - |
| /2 | 192.0.0.0 | 1,073,741,824 | 1,073,741,822 | - |
| /3 | 224.0.0.0 | 536,870,912 | 536,870,910 | - |
| /4 | 240.0.0.0 | 268,435,456 | 268,435,454 | - |
| /5 | 248.0.0.0 | 134,217,728 | 134,217,726 | - |
| /6 | 252.0.0.0 | 67,108,864 | 67,108,862 | - |
| /7 | 254.0.0.0 | 33,554,432 | 33,554,430 | - |
| /8 | 255.0.0.0 | 16,777,216 | 16,777,214 | - |
| /9 | 255.128.0.0 | 8,388,608 | 8,388,606 | - |
| /10 | 255.192.0.0 | 4,194,304 | 4,194,302 | - |
| /11 | 255.224.0.0 | 2,097,152 | 2,097,150 | - |
| /12 | 255.240.0.0 | 1,048,576 | 1,048,574 | - |
| /13 | 255.248.0.0 | 524,288 | 524,286 | - |
| /14 | 255.252.0.0 | 262,144 | 262,142 | - |
| /15 | 255.254.0.0 | 131,072 | 131,070 | - |
| /16 | 255.255.0.0 | 65,536 | 65,534 | - |
| /17 | 255.255.128.0 | 32,768 | 32,766 | - |
| /18 | 255.255.192.0 | 16,384 | 16,382 | - |
| /19 | 255.255.224.0 | 8,192 | 8,190 | - |
| /20 | 255.255.240.0 | 4,096 | 4,094 | - |
| /21 | 255.255.248.0 | 2,048 | 2,046 | - |
| /22 | 255.255.252.0 | 1,024 | 1,022 | - |
| /23 | 255.255.254.0 | 512 | 510 | 1 |
| /24 | 255.255.255.0 | 256 | 254 | 2 split → |
| /25 | 255.255.255.128 | 128 | 126 | 4 split → |
| /26 | 255.255.255.192 | 64 | 62 | 8 split → |
| /27 | 255.255.255.224 | 32 | 30 | 16 split → |
| /28 | 255.255.255.240 | 16 | 14 | 32 split → |
| /29 | 255.255.255.248 | 8 | 6 | 64 split → |
| /30 | 255.255.255.252 | 4 | 2 | 128 split → |
| /31 | 255.255.255.254 | 2 | 2 | 256 split → |
| /32 | 255.255.255.255 | 1 | 1 | 512 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.