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)10.63.154.0/23
network10.63.154.0/23
broadcast10.63.155.255
first host10.63.154.1
last host10.63.155.254
subnet mask255.255.254.0
wildcard0.0.1.255
addresses512
usable hosts510
classA
ipcalc 10.63.154.0/23
address00001010.00111111.10011010.00000000
subnet mask11111111.11111111.11111110.00000000
network00001010.00111111.10011010.00000000
broadcast00001010.00111111.10011011.11111111
green = network part, grey = host part
hex0x0a3f9a00
decimal171940352
reverse dns0.154.63.10.in-addr.arpa
ipv4-mapped::ffff:a3f:9a00
/23 split into /30 · 128 subnets
close ×| # | network | host range | broadcast |
|---|---|---|---|
| 1 | 10.63.154.0/30 | 10.63.154.1 – 10.63.154.2 | 10.63.154.3 |
| 2 | 10.63.154.4/30 | 10.63.154.5 – 10.63.154.6 | 10.63.154.7 |
| 3 | 10.63.154.8/30 | 10.63.154.9 – 10.63.154.10 | 10.63.154.11 |
| 4 | 10.63.154.12/30 | 10.63.154.13 – 10.63.154.14 | 10.63.154.15 |
| 5 | 10.63.154.16/30 | 10.63.154.17 – 10.63.154.18 | 10.63.154.19 |
| 6 | 10.63.154.20/30 | 10.63.154.21 – 10.63.154.22 | 10.63.154.23 |
| 7 | 10.63.154.24/30 | 10.63.154.25 – 10.63.154.26 | 10.63.154.27 |
| 8 | 10.63.154.28/30 | 10.63.154.29 – 10.63.154.30 | 10.63.154.31 |
| 9 | 10.63.154.32/30 | 10.63.154.33 – 10.63.154.34 | 10.63.154.35 |
| 10 | 10.63.154.36/30 | 10.63.154.37 – 10.63.154.38 | 10.63.154.39 |
| 11 | 10.63.154.40/30 | 10.63.154.41 – 10.63.154.42 | 10.63.154.43 |
| 12 | 10.63.154.44/30 | 10.63.154.45 – 10.63.154.46 | 10.63.154.47 |
| 13 | 10.63.154.48/30 | 10.63.154.49 – 10.63.154.50 | 10.63.154.51 |
| 14 | 10.63.154.52/30 | 10.63.154.53 – 10.63.154.54 | 10.63.154.55 |
| 15 | 10.63.154.56/30 | 10.63.154.57 – 10.63.154.58 | 10.63.154.59 |
| 16 | 10.63.154.60/30 | 10.63.154.61 – 10.63.154.62 | 10.63.154.63 |
| 17 | 10.63.154.64/30 | 10.63.154.65 – 10.63.154.66 | 10.63.154.67 |
| 18 | 10.63.154.68/30 | 10.63.154.69 – 10.63.154.70 | 10.63.154.71 |
| 19 | 10.63.154.72/30 | 10.63.154.73 – 10.63.154.74 | 10.63.154.75 |
| 20 | 10.63.154.76/30 | 10.63.154.77 – 10.63.154.78 | 10.63.154.79 |
| 21 | 10.63.154.80/30 | 10.63.154.81 – 10.63.154.82 | 10.63.154.83 |
| 22 | 10.63.154.84/30 | 10.63.154.85 – 10.63.154.86 | 10.63.154.87 |
| 23 | 10.63.154.88/30 | 10.63.154.89 – 10.63.154.90 | 10.63.154.91 |
| 24 | 10.63.154.92/30 | 10.63.154.93 – 10.63.154.94 | 10.63.154.95 |
| 25 | 10.63.154.96/30 | 10.63.154.97 – 10.63.154.98 | 10.63.154.99 |
| 26 | 10.63.154.100/30 | 10.63.154.101 – 10.63.154.102 | 10.63.154.103 |
| 27 | 10.63.154.104/30 | 10.63.154.105 – 10.63.154.106 | 10.63.154.107 |
| 28 | 10.63.154.108/30 | 10.63.154.109 – 10.63.154.110 | 10.63.154.111 |
| 29 | 10.63.154.112/30 | 10.63.154.113 – 10.63.154.114 | 10.63.154.115 |
| 30 | 10.63.154.116/30 | 10.63.154.117 – 10.63.154.118 | 10.63.154.119 |
| 31 | 10.63.154.120/30 | 10.63.154.121 – 10.63.154.122 | 10.63.154.123 |
| 32 | 10.63.154.124/30 | 10.63.154.125 – 10.63.154.126 | 10.63.154.127 |
| 33 | 10.63.154.128/30 | 10.63.154.129 – 10.63.154.130 | 10.63.154.131 |
| 34 | 10.63.154.132/30 | 10.63.154.133 – 10.63.154.134 | 10.63.154.135 |
| 35 | 10.63.154.136/30 | 10.63.154.137 – 10.63.154.138 | 10.63.154.139 |
| 36 | 10.63.154.140/30 | 10.63.154.141 – 10.63.154.142 | 10.63.154.143 |
| 37 | 10.63.154.144/30 | 10.63.154.145 – 10.63.154.146 | 10.63.154.147 |
| 38 | 10.63.154.148/30 | 10.63.154.149 – 10.63.154.150 | 10.63.154.151 |
| 39 | 10.63.154.152/30 | 10.63.154.153 – 10.63.154.154 | 10.63.154.155 |
| 40 | 10.63.154.156/30 | 10.63.154.157 – 10.63.154.158 | 10.63.154.159 |
| 41 | 10.63.154.160/30 | 10.63.154.161 – 10.63.154.162 | 10.63.154.163 |
| 42 | 10.63.154.164/30 | 10.63.154.165 – 10.63.154.166 | 10.63.154.167 |
| 43 | 10.63.154.168/30 | 10.63.154.169 – 10.63.154.170 | 10.63.154.171 |
| 44 | 10.63.154.172/30 | 10.63.154.173 – 10.63.154.174 | 10.63.154.175 |
| 45 | 10.63.154.176/30 | 10.63.154.177 – 10.63.154.178 | 10.63.154.179 |
| 46 | 10.63.154.180/30 | 10.63.154.181 – 10.63.154.182 | 10.63.154.183 |
| 47 | 10.63.154.184/30 | 10.63.154.185 – 10.63.154.186 | 10.63.154.187 |
| 48 | 10.63.154.188/30 | 10.63.154.189 – 10.63.154.190 | 10.63.154.191 |
| 49 | 10.63.154.192/30 | 10.63.154.193 – 10.63.154.194 | 10.63.154.195 |
| 50 | 10.63.154.196/30 | 10.63.154.197 – 10.63.154.198 | 10.63.154.199 |
| 51 | 10.63.154.200/30 | 10.63.154.201 – 10.63.154.202 | 10.63.154.203 |
| 52 | 10.63.154.204/30 | 10.63.154.205 – 10.63.154.206 | 10.63.154.207 |
| 53 | 10.63.154.208/30 | 10.63.154.209 – 10.63.154.210 | 10.63.154.211 |
| 54 | 10.63.154.212/30 | 10.63.154.213 – 10.63.154.214 | 10.63.154.215 |
| 55 | 10.63.154.216/30 | 10.63.154.217 – 10.63.154.218 | 10.63.154.219 |
| 56 | 10.63.154.220/30 | 10.63.154.221 – 10.63.154.222 | 10.63.154.223 |
| 57 | 10.63.154.224/30 | 10.63.154.225 – 10.63.154.226 | 10.63.154.227 |
| 58 | 10.63.154.228/30 | 10.63.154.229 – 10.63.154.230 | 10.63.154.231 |
| 59 | 10.63.154.232/30 | 10.63.154.233 – 10.63.154.234 | 10.63.154.235 |
| 60 | 10.63.154.236/30 | 10.63.154.237 – 10.63.154.238 | 10.63.154.239 |
| 61 | 10.63.154.240/30 | 10.63.154.241 – 10.63.154.242 | 10.63.154.243 |
| 62 | 10.63.154.244/30 | 10.63.154.245 – 10.63.154.246 | 10.63.154.247 |
| 63 | 10.63.154.248/30 | 10.63.154.249 – 10.63.154.250 | 10.63.154.251 |
| 64 | 10.63.154.252/30 | 10.63.154.253 – 10.63.154.254 | 10.63.154.255 |
| 65 | 10.63.155.0/30 | 10.63.155.1 – 10.63.155.2 | 10.63.155.3 |
| 66 | 10.63.155.4/30 | 10.63.155.5 – 10.63.155.6 | 10.63.155.7 |
| 67 | 10.63.155.8/30 | 10.63.155.9 – 10.63.155.10 | 10.63.155.11 |
| 68 | 10.63.155.12/30 | 10.63.155.13 – 10.63.155.14 | 10.63.155.15 |
| 69 | 10.63.155.16/30 | 10.63.155.17 – 10.63.155.18 | 10.63.155.19 |
| 70 | 10.63.155.20/30 | 10.63.155.21 – 10.63.155.22 | 10.63.155.23 |
| 71 | 10.63.155.24/30 | 10.63.155.25 – 10.63.155.26 | 10.63.155.27 |
| 72 | 10.63.155.28/30 | 10.63.155.29 – 10.63.155.30 | 10.63.155.31 |
| 73 | 10.63.155.32/30 | 10.63.155.33 – 10.63.155.34 | 10.63.155.35 |
| 74 | 10.63.155.36/30 | 10.63.155.37 – 10.63.155.38 | 10.63.155.39 |
| 75 | 10.63.155.40/30 | 10.63.155.41 – 10.63.155.42 | 10.63.155.43 |
| 76 | 10.63.155.44/30 | 10.63.155.45 – 10.63.155.46 | 10.63.155.47 |
| 77 | 10.63.155.48/30 | 10.63.155.49 – 10.63.155.50 | 10.63.155.51 |
| 78 | 10.63.155.52/30 | 10.63.155.53 – 10.63.155.54 | 10.63.155.55 |
| 79 | 10.63.155.56/30 | 10.63.155.57 – 10.63.155.58 | 10.63.155.59 |
| 80 | 10.63.155.60/30 | 10.63.155.61 – 10.63.155.62 | 10.63.155.63 |
| 81 | 10.63.155.64/30 | 10.63.155.65 – 10.63.155.66 | 10.63.155.67 |
| 82 | 10.63.155.68/30 | 10.63.155.69 – 10.63.155.70 | 10.63.155.71 |
| 83 | 10.63.155.72/30 | 10.63.155.73 – 10.63.155.74 | 10.63.155.75 |
| 84 | 10.63.155.76/30 | 10.63.155.77 – 10.63.155.78 | 10.63.155.79 |
| 85 | 10.63.155.80/30 | 10.63.155.81 – 10.63.155.82 | 10.63.155.83 |
| 86 | 10.63.155.84/30 | 10.63.155.85 – 10.63.155.86 | 10.63.155.87 |
| 87 | 10.63.155.88/30 | 10.63.155.89 – 10.63.155.90 | 10.63.155.91 |
| 88 | 10.63.155.92/30 | 10.63.155.93 – 10.63.155.94 | 10.63.155.95 |
| 89 | 10.63.155.96/30 | 10.63.155.97 – 10.63.155.98 | 10.63.155.99 |
| 90 | 10.63.155.100/30 | 10.63.155.101 – 10.63.155.102 | 10.63.155.103 |
| 91 | 10.63.155.104/30 | 10.63.155.105 – 10.63.155.106 | 10.63.155.107 |
| 92 | 10.63.155.108/30 | 10.63.155.109 – 10.63.155.110 | 10.63.155.111 |
| 93 | 10.63.155.112/30 | 10.63.155.113 – 10.63.155.114 | 10.63.155.115 |
| 94 | 10.63.155.116/30 | 10.63.155.117 – 10.63.155.118 | 10.63.155.119 |
| 95 | 10.63.155.120/30 | 10.63.155.121 – 10.63.155.122 | 10.63.155.123 |
| 96 | 10.63.155.124/30 | 10.63.155.125 – 10.63.155.126 | 10.63.155.127 |
| 97 | 10.63.155.128/30 | 10.63.155.129 – 10.63.155.130 | 10.63.155.131 |
| 98 | 10.63.155.132/30 | 10.63.155.133 – 10.63.155.134 | 10.63.155.135 |
| 99 | 10.63.155.136/30 | 10.63.155.137 – 10.63.155.138 | 10.63.155.139 |
| 100 | 10.63.155.140/30 | 10.63.155.141 – 10.63.155.142 | 10.63.155.143 |
| 101 | 10.63.155.144/30 | 10.63.155.145 – 10.63.155.146 | 10.63.155.147 |
| 102 | 10.63.155.148/30 | 10.63.155.149 – 10.63.155.150 | 10.63.155.151 |
| 103 | 10.63.155.152/30 | 10.63.155.153 – 10.63.155.154 | 10.63.155.155 |
| 104 | 10.63.155.156/30 | 10.63.155.157 – 10.63.155.158 | 10.63.155.159 |
| 105 | 10.63.155.160/30 | 10.63.155.161 – 10.63.155.162 | 10.63.155.163 |
| 106 | 10.63.155.164/30 | 10.63.155.165 – 10.63.155.166 | 10.63.155.167 |
| 107 | 10.63.155.168/30 | 10.63.155.169 – 10.63.155.170 | 10.63.155.171 |
| 108 | 10.63.155.172/30 | 10.63.155.173 – 10.63.155.174 | 10.63.155.175 |
| 109 | 10.63.155.176/30 | 10.63.155.177 – 10.63.155.178 | 10.63.155.179 |
| 110 | 10.63.155.180/30 | 10.63.155.181 – 10.63.155.182 | 10.63.155.183 |
| 111 | 10.63.155.184/30 | 10.63.155.185 – 10.63.155.186 | 10.63.155.187 |
| 112 | 10.63.155.188/30 | 10.63.155.189 – 10.63.155.190 | 10.63.155.191 |
| 113 | 10.63.155.192/30 | 10.63.155.193 – 10.63.155.194 | 10.63.155.195 |
| 114 | 10.63.155.196/30 | 10.63.155.197 – 10.63.155.198 | 10.63.155.199 |
| 115 | 10.63.155.200/30 | 10.63.155.201 – 10.63.155.202 | 10.63.155.203 |
| 116 | 10.63.155.204/30 | 10.63.155.205 – 10.63.155.206 | 10.63.155.207 |
| 117 | 10.63.155.208/30 | 10.63.155.209 – 10.63.155.210 | 10.63.155.211 |
| 118 | 10.63.155.212/30 | 10.63.155.213 – 10.63.155.214 | 10.63.155.215 |
| 119 | 10.63.155.216/30 | 10.63.155.217 – 10.63.155.218 | 10.63.155.219 |
| 120 | 10.63.155.220/30 | 10.63.155.221 – 10.63.155.222 | 10.63.155.223 |
| 121 | 10.63.155.224/30 | 10.63.155.225 – 10.63.155.226 | 10.63.155.227 |
| 122 | 10.63.155.228/30 | 10.63.155.229 – 10.63.155.230 | 10.63.155.231 |
| 123 | 10.63.155.232/30 | 10.63.155.233 – 10.63.155.234 | 10.63.155.235 |
| 124 | 10.63.155.236/30 | 10.63.155.237 – 10.63.155.238 | 10.63.155.239 |
| 125 | 10.63.155.240/30 | 10.63.155.241 – 10.63.155.242 | 10.63.155.243 |
| 126 | 10.63.155.244/30 | 10.63.155.245 – 10.63.155.246 | 10.63.155.247 |
| 127 | 10.63.155.248/30 | 10.63.155.249 – 10.63.155.250 | 10.63.155.251 |
| 128 | 10.63.155.252/30 | 10.63.155.253 – 10.63.155.254 | 10.63.155.255 |
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.