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)10.0.194.0/23
network10.0.194.0/23
broadcast10.0.195.255
first host10.0.194.1
last host10.0.195.254
subnet mask255.255.254.0
wildcard0.0.1.255
addresses512
usable hosts510
classA
ipcalc 10.0.194.0/23
address00001010.00000000.11000010.00000000
subnet mask11111111.11111111.11111110.00000000
network00001010.00000000.11000010.00000000
broadcast00001010.00000000.11000011.11111111
green = network part, grey = host part
hex0x0a00c200
decimal167821824
reverse dns0.194.0.10.in-addr.arpa
ipv4-mapped::ffff:a00:c200
/23 split into /30 · 128 subnets
close ×| # | network | host range | broadcast |
|---|---|---|---|
| 1 | 10.0.194.0/30 | 10.0.194.1 – 10.0.194.2 | 10.0.194.3 |
| 2 | 10.0.194.4/30 | 10.0.194.5 – 10.0.194.6 | 10.0.194.7 |
| 3 | 10.0.194.8/30 | 10.0.194.9 – 10.0.194.10 | 10.0.194.11 |
| 4 | 10.0.194.12/30 | 10.0.194.13 – 10.0.194.14 | 10.0.194.15 |
| 5 | 10.0.194.16/30 | 10.0.194.17 – 10.0.194.18 | 10.0.194.19 |
| 6 | 10.0.194.20/30 | 10.0.194.21 – 10.0.194.22 | 10.0.194.23 |
| 7 | 10.0.194.24/30 | 10.0.194.25 – 10.0.194.26 | 10.0.194.27 |
| 8 | 10.0.194.28/30 | 10.0.194.29 – 10.0.194.30 | 10.0.194.31 |
| 9 | 10.0.194.32/30 | 10.0.194.33 – 10.0.194.34 | 10.0.194.35 |
| 10 | 10.0.194.36/30 | 10.0.194.37 – 10.0.194.38 | 10.0.194.39 |
| 11 | 10.0.194.40/30 | 10.0.194.41 – 10.0.194.42 | 10.0.194.43 |
| 12 | 10.0.194.44/30 | 10.0.194.45 – 10.0.194.46 | 10.0.194.47 |
| 13 | 10.0.194.48/30 | 10.0.194.49 – 10.0.194.50 | 10.0.194.51 |
| 14 | 10.0.194.52/30 | 10.0.194.53 – 10.0.194.54 | 10.0.194.55 |
| 15 | 10.0.194.56/30 | 10.0.194.57 – 10.0.194.58 | 10.0.194.59 |
| 16 | 10.0.194.60/30 | 10.0.194.61 – 10.0.194.62 | 10.0.194.63 |
| 17 | 10.0.194.64/30 | 10.0.194.65 – 10.0.194.66 | 10.0.194.67 |
| 18 | 10.0.194.68/30 | 10.0.194.69 – 10.0.194.70 | 10.0.194.71 |
| 19 | 10.0.194.72/30 | 10.0.194.73 – 10.0.194.74 | 10.0.194.75 |
| 20 | 10.0.194.76/30 | 10.0.194.77 – 10.0.194.78 | 10.0.194.79 |
| 21 | 10.0.194.80/30 | 10.0.194.81 – 10.0.194.82 | 10.0.194.83 |
| 22 | 10.0.194.84/30 | 10.0.194.85 – 10.0.194.86 | 10.0.194.87 |
| 23 | 10.0.194.88/30 | 10.0.194.89 – 10.0.194.90 | 10.0.194.91 |
| 24 | 10.0.194.92/30 | 10.0.194.93 – 10.0.194.94 | 10.0.194.95 |
| 25 | 10.0.194.96/30 | 10.0.194.97 – 10.0.194.98 | 10.0.194.99 |
| 26 | 10.0.194.100/30 | 10.0.194.101 – 10.0.194.102 | 10.0.194.103 |
| 27 | 10.0.194.104/30 | 10.0.194.105 – 10.0.194.106 | 10.0.194.107 |
| 28 | 10.0.194.108/30 | 10.0.194.109 – 10.0.194.110 | 10.0.194.111 |
| 29 | 10.0.194.112/30 | 10.0.194.113 – 10.0.194.114 | 10.0.194.115 |
| 30 | 10.0.194.116/30 | 10.0.194.117 – 10.0.194.118 | 10.0.194.119 |
| 31 | 10.0.194.120/30 | 10.0.194.121 – 10.0.194.122 | 10.0.194.123 |
| 32 | 10.0.194.124/30 | 10.0.194.125 – 10.0.194.126 | 10.0.194.127 |
| 33 | 10.0.194.128/30 | 10.0.194.129 – 10.0.194.130 | 10.0.194.131 |
| 34 | 10.0.194.132/30 | 10.0.194.133 – 10.0.194.134 | 10.0.194.135 |
| 35 | 10.0.194.136/30 | 10.0.194.137 – 10.0.194.138 | 10.0.194.139 |
| 36 | 10.0.194.140/30 | 10.0.194.141 – 10.0.194.142 | 10.0.194.143 |
| 37 | 10.0.194.144/30 | 10.0.194.145 – 10.0.194.146 | 10.0.194.147 |
| 38 | 10.0.194.148/30 | 10.0.194.149 – 10.0.194.150 | 10.0.194.151 |
| 39 | 10.0.194.152/30 | 10.0.194.153 – 10.0.194.154 | 10.0.194.155 |
| 40 | 10.0.194.156/30 | 10.0.194.157 – 10.0.194.158 | 10.0.194.159 |
| 41 | 10.0.194.160/30 | 10.0.194.161 – 10.0.194.162 | 10.0.194.163 |
| 42 | 10.0.194.164/30 | 10.0.194.165 – 10.0.194.166 | 10.0.194.167 |
| 43 | 10.0.194.168/30 | 10.0.194.169 – 10.0.194.170 | 10.0.194.171 |
| 44 | 10.0.194.172/30 | 10.0.194.173 – 10.0.194.174 | 10.0.194.175 |
| 45 | 10.0.194.176/30 | 10.0.194.177 – 10.0.194.178 | 10.0.194.179 |
| 46 | 10.0.194.180/30 | 10.0.194.181 – 10.0.194.182 | 10.0.194.183 |
| 47 | 10.0.194.184/30 | 10.0.194.185 – 10.0.194.186 | 10.0.194.187 |
| 48 | 10.0.194.188/30 | 10.0.194.189 – 10.0.194.190 | 10.0.194.191 |
| 49 | 10.0.194.192/30 | 10.0.194.193 – 10.0.194.194 | 10.0.194.195 |
| 50 | 10.0.194.196/30 | 10.0.194.197 – 10.0.194.198 | 10.0.194.199 |
| 51 | 10.0.194.200/30 | 10.0.194.201 – 10.0.194.202 | 10.0.194.203 |
| 52 | 10.0.194.204/30 | 10.0.194.205 – 10.0.194.206 | 10.0.194.207 |
| 53 | 10.0.194.208/30 | 10.0.194.209 – 10.0.194.210 | 10.0.194.211 |
| 54 | 10.0.194.212/30 | 10.0.194.213 – 10.0.194.214 | 10.0.194.215 |
| 55 | 10.0.194.216/30 | 10.0.194.217 – 10.0.194.218 | 10.0.194.219 |
| 56 | 10.0.194.220/30 | 10.0.194.221 – 10.0.194.222 | 10.0.194.223 |
| 57 | 10.0.194.224/30 | 10.0.194.225 – 10.0.194.226 | 10.0.194.227 |
| 58 | 10.0.194.228/30 | 10.0.194.229 – 10.0.194.230 | 10.0.194.231 |
| 59 | 10.0.194.232/30 | 10.0.194.233 – 10.0.194.234 | 10.0.194.235 |
| 60 | 10.0.194.236/30 | 10.0.194.237 – 10.0.194.238 | 10.0.194.239 |
| 61 | 10.0.194.240/30 | 10.0.194.241 – 10.0.194.242 | 10.0.194.243 |
| 62 | 10.0.194.244/30 | 10.0.194.245 – 10.0.194.246 | 10.0.194.247 |
| 63 | 10.0.194.248/30 | 10.0.194.249 – 10.0.194.250 | 10.0.194.251 |
| 64 | 10.0.194.252/30 | 10.0.194.253 – 10.0.194.254 | 10.0.194.255 |
| 65 | 10.0.195.0/30 | 10.0.195.1 – 10.0.195.2 | 10.0.195.3 |
| 66 | 10.0.195.4/30 | 10.0.195.5 – 10.0.195.6 | 10.0.195.7 |
| 67 | 10.0.195.8/30 | 10.0.195.9 – 10.0.195.10 | 10.0.195.11 |
| 68 | 10.0.195.12/30 | 10.0.195.13 – 10.0.195.14 | 10.0.195.15 |
| 69 | 10.0.195.16/30 | 10.0.195.17 – 10.0.195.18 | 10.0.195.19 |
| 70 | 10.0.195.20/30 | 10.0.195.21 – 10.0.195.22 | 10.0.195.23 |
| 71 | 10.0.195.24/30 | 10.0.195.25 – 10.0.195.26 | 10.0.195.27 |
| 72 | 10.0.195.28/30 | 10.0.195.29 – 10.0.195.30 | 10.0.195.31 |
| 73 | 10.0.195.32/30 | 10.0.195.33 – 10.0.195.34 | 10.0.195.35 |
| 74 | 10.0.195.36/30 | 10.0.195.37 – 10.0.195.38 | 10.0.195.39 |
| 75 | 10.0.195.40/30 | 10.0.195.41 – 10.0.195.42 | 10.0.195.43 |
| 76 | 10.0.195.44/30 | 10.0.195.45 – 10.0.195.46 | 10.0.195.47 |
| 77 | 10.0.195.48/30 | 10.0.195.49 – 10.0.195.50 | 10.0.195.51 |
| 78 | 10.0.195.52/30 | 10.0.195.53 – 10.0.195.54 | 10.0.195.55 |
| 79 | 10.0.195.56/30 | 10.0.195.57 – 10.0.195.58 | 10.0.195.59 |
| 80 | 10.0.195.60/30 | 10.0.195.61 – 10.0.195.62 | 10.0.195.63 |
| 81 | 10.0.195.64/30 | 10.0.195.65 – 10.0.195.66 | 10.0.195.67 |
| 82 | 10.0.195.68/30 | 10.0.195.69 – 10.0.195.70 | 10.0.195.71 |
| 83 | 10.0.195.72/30 | 10.0.195.73 – 10.0.195.74 | 10.0.195.75 |
| 84 | 10.0.195.76/30 | 10.0.195.77 – 10.0.195.78 | 10.0.195.79 |
| 85 | 10.0.195.80/30 | 10.0.195.81 – 10.0.195.82 | 10.0.195.83 |
| 86 | 10.0.195.84/30 | 10.0.195.85 – 10.0.195.86 | 10.0.195.87 |
| 87 | 10.0.195.88/30 | 10.0.195.89 – 10.0.195.90 | 10.0.195.91 |
| 88 | 10.0.195.92/30 | 10.0.195.93 – 10.0.195.94 | 10.0.195.95 |
| 89 | 10.0.195.96/30 | 10.0.195.97 – 10.0.195.98 | 10.0.195.99 |
| 90 | 10.0.195.100/30 | 10.0.195.101 – 10.0.195.102 | 10.0.195.103 |
| 91 | 10.0.195.104/30 | 10.0.195.105 – 10.0.195.106 | 10.0.195.107 |
| 92 | 10.0.195.108/30 | 10.0.195.109 – 10.0.195.110 | 10.0.195.111 |
| 93 | 10.0.195.112/30 | 10.0.195.113 – 10.0.195.114 | 10.0.195.115 |
| 94 | 10.0.195.116/30 | 10.0.195.117 – 10.0.195.118 | 10.0.195.119 |
| 95 | 10.0.195.120/30 | 10.0.195.121 – 10.0.195.122 | 10.0.195.123 |
| 96 | 10.0.195.124/30 | 10.0.195.125 – 10.0.195.126 | 10.0.195.127 |
| 97 | 10.0.195.128/30 | 10.0.195.129 – 10.0.195.130 | 10.0.195.131 |
| 98 | 10.0.195.132/30 | 10.0.195.133 – 10.0.195.134 | 10.0.195.135 |
| 99 | 10.0.195.136/30 | 10.0.195.137 – 10.0.195.138 | 10.0.195.139 |
| 100 | 10.0.195.140/30 | 10.0.195.141 – 10.0.195.142 | 10.0.195.143 |
| 101 | 10.0.195.144/30 | 10.0.195.145 – 10.0.195.146 | 10.0.195.147 |
| 102 | 10.0.195.148/30 | 10.0.195.149 – 10.0.195.150 | 10.0.195.151 |
| 103 | 10.0.195.152/30 | 10.0.195.153 – 10.0.195.154 | 10.0.195.155 |
| 104 | 10.0.195.156/30 | 10.0.195.157 – 10.0.195.158 | 10.0.195.159 |
| 105 | 10.0.195.160/30 | 10.0.195.161 – 10.0.195.162 | 10.0.195.163 |
| 106 | 10.0.195.164/30 | 10.0.195.165 – 10.0.195.166 | 10.0.195.167 |
| 107 | 10.0.195.168/30 | 10.0.195.169 – 10.0.195.170 | 10.0.195.171 |
| 108 | 10.0.195.172/30 | 10.0.195.173 – 10.0.195.174 | 10.0.195.175 |
| 109 | 10.0.195.176/30 | 10.0.195.177 – 10.0.195.178 | 10.0.195.179 |
| 110 | 10.0.195.180/30 | 10.0.195.181 – 10.0.195.182 | 10.0.195.183 |
| 111 | 10.0.195.184/30 | 10.0.195.185 – 10.0.195.186 | 10.0.195.187 |
| 112 | 10.0.195.188/30 | 10.0.195.189 – 10.0.195.190 | 10.0.195.191 |
| 113 | 10.0.195.192/30 | 10.0.195.193 – 10.0.195.194 | 10.0.195.195 |
| 114 | 10.0.195.196/30 | 10.0.195.197 – 10.0.195.198 | 10.0.195.199 |
| 115 | 10.0.195.200/30 | 10.0.195.201 – 10.0.195.202 | 10.0.195.203 |
| 116 | 10.0.195.204/30 | 10.0.195.205 – 10.0.195.206 | 10.0.195.207 |
| 117 | 10.0.195.208/30 | 10.0.195.209 – 10.0.195.210 | 10.0.195.211 |
| 118 | 10.0.195.212/30 | 10.0.195.213 – 10.0.195.214 | 10.0.195.215 |
| 119 | 10.0.195.216/30 | 10.0.195.217 – 10.0.195.218 | 10.0.195.219 |
| 120 | 10.0.195.220/30 | 10.0.195.221 – 10.0.195.222 | 10.0.195.223 |
| 121 | 10.0.195.224/30 | 10.0.195.225 – 10.0.195.226 | 10.0.195.227 |
| 122 | 10.0.195.228/30 | 10.0.195.229 – 10.0.195.230 | 10.0.195.231 |
| 123 | 10.0.195.232/30 | 10.0.195.233 – 10.0.195.234 | 10.0.195.235 |
| 124 | 10.0.195.236/30 | 10.0.195.237 – 10.0.195.238 | 10.0.195.239 |
| 125 | 10.0.195.240/30 | 10.0.195.241 – 10.0.195.242 | 10.0.195.243 |
| 126 | 10.0.195.244/30 | 10.0.195.245 – 10.0.195.246 | 10.0.195.247 |
| 127 | 10.0.195.248/30 | 10.0.195.249 – 10.0.195.250 | 10.0.195.251 |
| 128 | 10.0.195.252/30 | 10.0.195.253 – 10.0.195.254 | 10.0.195.255 |
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.