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)10.4.84.0/23
network10.4.84.0/23
broadcast10.4.85.255
first host10.4.84.1
last host10.4.85.254
subnet mask255.255.254.0
wildcard0.0.1.255
addresses512
usable hosts510
classA
ipcalc 10.4.84.0/23
address00001010.00000100.01010100.00000000
subnet mask11111111.11111111.11111110.00000000
network00001010.00000100.01010100.00000000
broadcast00001010.00000100.01010101.11111111
green = network part, grey = host part
hex0x0a045400
decimal168055808
reverse dns0.84.4.10.in-addr.arpa
ipv4-mapped::ffff:a04:5400
/23 split into /30 · 128 subnets
close ×| # | network | host range | broadcast |
|---|---|---|---|
| 1 | 10.4.84.0/30 | 10.4.84.1 – 10.4.84.2 | 10.4.84.3 |
| 2 | 10.4.84.4/30 | 10.4.84.5 – 10.4.84.6 | 10.4.84.7 |
| 3 | 10.4.84.8/30 | 10.4.84.9 – 10.4.84.10 | 10.4.84.11 |
| 4 | 10.4.84.12/30 | 10.4.84.13 – 10.4.84.14 | 10.4.84.15 |
| 5 | 10.4.84.16/30 | 10.4.84.17 – 10.4.84.18 | 10.4.84.19 |
| 6 | 10.4.84.20/30 | 10.4.84.21 – 10.4.84.22 | 10.4.84.23 |
| 7 | 10.4.84.24/30 | 10.4.84.25 – 10.4.84.26 | 10.4.84.27 |
| 8 | 10.4.84.28/30 | 10.4.84.29 – 10.4.84.30 | 10.4.84.31 |
| 9 | 10.4.84.32/30 | 10.4.84.33 – 10.4.84.34 | 10.4.84.35 |
| 10 | 10.4.84.36/30 | 10.4.84.37 – 10.4.84.38 | 10.4.84.39 |
| 11 | 10.4.84.40/30 | 10.4.84.41 – 10.4.84.42 | 10.4.84.43 |
| 12 | 10.4.84.44/30 | 10.4.84.45 – 10.4.84.46 | 10.4.84.47 |
| 13 | 10.4.84.48/30 | 10.4.84.49 – 10.4.84.50 | 10.4.84.51 |
| 14 | 10.4.84.52/30 | 10.4.84.53 – 10.4.84.54 | 10.4.84.55 |
| 15 | 10.4.84.56/30 | 10.4.84.57 – 10.4.84.58 | 10.4.84.59 |
| 16 | 10.4.84.60/30 | 10.4.84.61 – 10.4.84.62 | 10.4.84.63 |
| 17 | 10.4.84.64/30 | 10.4.84.65 – 10.4.84.66 | 10.4.84.67 |
| 18 | 10.4.84.68/30 | 10.4.84.69 – 10.4.84.70 | 10.4.84.71 |
| 19 | 10.4.84.72/30 | 10.4.84.73 – 10.4.84.74 | 10.4.84.75 |
| 20 | 10.4.84.76/30 | 10.4.84.77 – 10.4.84.78 | 10.4.84.79 |
| 21 | 10.4.84.80/30 | 10.4.84.81 – 10.4.84.82 | 10.4.84.83 |
| 22 | 10.4.84.84/30 | 10.4.84.85 – 10.4.84.86 | 10.4.84.87 |
| 23 | 10.4.84.88/30 | 10.4.84.89 – 10.4.84.90 | 10.4.84.91 |
| 24 | 10.4.84.92/30 | 10.4.84.93 – 10.4.84.94 | 10.4.84.95 |
| 25 | 10.4.84.96/30 | 10.4.84.97 – 10.4.84.98 | 10.4.84.99 |
| 26 | 10.4.84.100/30 | 10.4.84.101 – 10.4.84.102 | 10.4.84.103 |
| 27 | 10.4.84.104/30 | 10.4.84.105 – 10.4.84.106 | 10.4.84.107 |
| 28 | 10.4.84.108/30 | 10.4.84.109 – 10.4.84.110 | 10.4.84.111 |
| 29 | 10.4.84.112/30 | 10.4.84.113 – 10.4.84.114 | 10.4.84.115 |
| 30 | 10.4.84.116/30 | 10.4.84.117 – 10.4.84.118 | 10.4.84.119 |
| 31 | 10.4.84.120/30 | 10.4.84.121 – 10.4.84.122 | 10.4.84.123 |
| 32 | 10.4.84.124/30 | 10.4.84.125 – 10.4.84.126 | 10.4.84.127 |
| 33 | 10.4.84.128/30 | 10.4.84.129 – 10.4.84.130 | 10.4.84.131 |
| 34 | 10.4.84.132/30 | 10.4.84.133 – 10.4.84.134 | 10.4.84.135 |
| 35 | 10.4.84.136/30 | 10.4.84.137 – 10.4.84.138 | 10.4.84.139 |
| 36 | 10.4.84.140/30 | 10.4.84.141 – 10.4.84.142 | 10.4.84.143 |
| 37 | 10.4.84.144/30 | 10.4.84.145 – 10.4.84.146 | 10.4.84.147 |
| 38 | 10.4.84.148/30 | 10.4.84.149 – 10.4.84.150 | 10.4.84.151 |
| 39 | 10.4.84.152/30 | 10.4.84.153 – 10.4.84.154 | 10.4.84.155 |
| 40 | 10.4.84.156/30 | 10.4.84.157 – 10.4.84.158 | 10.4.84.159 |
| 41 | 10.4.84.160/30 | 10.4.84.161 – 10.4.84.162 | 10.4.84.163 |
| 42 | 10.4.84.164/30 | 10.4.84.165 – 10.4.84.166 | 10.4.84.167 |
| 43 | 10.4.84.168/30 | 10.4.84.169 – 10.4.84.170 | 10.4.84.171 |
| 44 | 10.4.84.172/30 | 10.4.84.173 – 10.4.84.174 | 10.4.84.175 |
| 45 | 10.4.84.176/30 | 10.4.84.177 – 10.4.84.178 | 10.4.84.179 |
| 46 | 10.4.84.180/30 | 10.4.84.181 – 10.4.84.182 | 10.4.84.183 |
| 47 | 10.4.84.184/30 | 10.4.84.185 – 10.4.84.186 | 10.4.84.187 |
| 48 | 10.4.84.188/30 | 10.4.84.189 – 10.4.84.190 | 10.4.84.191 |
| 49 | 10.4.84.192/30 | 10.4.84.193 – 10.4.84.194 | 10.4.84.195 |
| 50 | 10.4.84.196/30 | 10.4.84.197 – 10.4.84.198 | 10.4.84.199 |
| 51 | 10.4.84.200/30 | 10.4.84.201 – 10.4.84.202 | 10.4.84.203 |
| 52 | 10.4.84.204/30 | 10.4.84.205 – 10.4.84.206 | 10.4.84.207 |
| 53 | 10.4.84.208/30 | 10.4.84.209 – 10.4.84.210 | 10.4.84.211 |
| 54 | 10.4.84.212/30 | 10.4.84.213 – 10.4.84.214 | 10.4.84.215 |
| 55 | 10.4.84.216/30 | 10.4.84.217 – 10.4.84.218 | 10.4.84.219 |
| 56 | 10.4.84.220/30 | 10.4.84.221 – 10.4.84.222 | 10.4.84.223 |
| 57 | 10.4.84.224/30 | 10.4.84.225 – 10.4.84.226 | 10.4.84.227 |
| 58 | 10.4.84.228/30 | 10.4.84.229 – 10.4.84.230 | 10.4.84.231 |
| 59 | 10.4.84.232/30 | 10.4.84.233 – 10.4.84.234 | 10.4.84.235 |
| 60 | 10.4.84.236/30 | 10.4.84.237 – 10.4.84.238 | 10.4.84.239 |
| 61 | 10.4.84.240/30 | 10.4.84.241 – 10.4.84.242 | 10.4.84.243 |
| 62 | 10.4.84.244/30 | 10.4.84.245 – 10.4.84.246 | 10.4.84.247 |
| 63 | 10.4.84.248/30 | 10.4.84.249 – 10.4.84.250 | 10.4.84.251 |
| 64 | 10.4.84.252/30 | 10.4.84.253 – 10.4.84.254 | 10.4.84.255 |
| 65 | 10.4.85.0/30 | 10.4.85.1 – 10.4.85.2 | 10.4.85.3 |
| 66 | 10.4.85.4/30 | 10.4.85.5 – 10.4.85.6 | 10.4.85.7 |
| 67 | 10.4.85.8/30 | 10.4.85.9 – 10.4.85.10 | 10.4.85.11 |
| 68 | 10.4.85.12/30 | 10.4.85.13 – 10.4.85.14 | 10.4.85.15 |
| 69 | 10.4.85.16/30 | 10.4.85.17 – 10.4.85.18 | 10.4.85.19 |
| 70 | 10.4.85.20/30 | 10.4.85.21 – 10.4.85.22 | 10.4.85.23 |
| 71 | 10.4.85.24/30 | 10.4.85.25 – 10.4.85.26 | 10.4.85.27 |
| 72 | 10.4.85.28/30 | 10.4.85.29 – 10.4.85.30 | 10.4.85.31 |
| 73 | 10.4.85.32/30 | 10.4.85.33 – 10.4.85.34 | 10.4.85.35 |
| 74 | 10.4.85.36/30 | 10.4.85.37 – 10.4.85.38 | 10.4.85.39 |
| 75 | 10.4.85.40/30 | 10.4.85.41 – 10.4.85.42 | 10.4.85.43 |
| 76 | 10.4.85.44/30 | 10.4.85.45 – 10.4.85.46 | 10.4.85.47 |
| 77 | 10.4.85.48/30 | 10.4.85.49 – 10.4.85.50 | 10.4.85.51 |
| 78 | 10.4.85.52/30 | 10.4.85.53 – 10.4.85.54 | 10.4.85.55 |
| 79 | 10.4.85.56/30 | 10.4.85.57 – 10.4.85.58 | 10.4.85.59 |
| 80 | 10.4.85.60/30 | 10.4.85.61 – 10.4.85.62 | 10.4.85.63 |
| 81 | 10.4.85.64/30 | 10.4.85.65 – 10.4.85.66 | 10.4.85.67 |
| 82 | 10.4.85.68/30 | 10.4.85.69 – 10.4.85.70 | 10.4.85.71 |
| 83 | 10.4.85.72/30 | 10.4.85.73 – 10.4.85.74 | 10.4.85.75 |
| 84 | 10.4.85.76/30 | 10.4.85.77 – 10.4.85.78 | 10.4.85.79 |
| 85 | 10.4.85.80/30 | 10.4.85.81 – 10.4.85.82 | 10.4.85.83 |
| 86 | 10.4.85.84/30 | 10.4.85.85 – 10.4.85.86 | 10.4.85.87 |
| 87 | 10.4.85.88/30 | 10.4.85.89 – 10.4.85.90 | 10.4.85.91 |
| 88 | 10.4.85.92/30 | 10.4.85.93 – 10.4.85.94 | 10.4.85.95 |
| 89 | 10.4.85.96/30 | 10.4.85.97 – 10.4.85.98 | 10.4.85.99 |
| 90 | 10.4.85.100/30 | 10.4.85.101 – 10.4.85.102 | 10.4.85.103 |
| 91 | 10.4.85.104/30 | 10.4.85.105 – 10.4.85.106 | 10.4.85.107 |
| 92 | 10.4.85.108/30 | 10.4.85.109 – 10.4.85.110 | 10.4.85.111 |
| 93 | 10.4.85.112/30 | 10.4.85.113 – 10.4.85.114 | 10.4.85.115 |
| 94 | 10.4.85.116/30 | 10.4.85.117 – 10.4.85.118 | 10.4.85.119 |
| 95 | 10.4.85.120/30 | 10.4.85.121 – 10.4.85.122 | 10.4.85.123 |
| 96 | 10.4.85.124/30 | 10.4.85.125 – 10.4.85.126 | 10.4.85.127 |
| 97 | 10.4.85.128/30 | 10.4.85.129 – 10.4.85.130 | 10.4.85.131 |
| 98 | 10.4.85.132/30 | 10.4.85.133 – 10.4.85.134 | 10.4.85.135 |
| 99 | 10.4.85.136/30 | 10.4.85.137 – 10.4.85.138 | 10.4.85.139 |
| 100 | 10.4.85.140/30 | 10.4.85.141 – 10.4.85.142 | 10.4.85.143 |
| 101 | 10.4.85.144/30 | 10.4.85.145 – 10.4.85.146 | 10.4.85.147 |
| 102 | 10.4.85.148/30 | 10.4.85.149 – 10.4.85.150 | 10.4.85.151 |
| 103 | 10.4.85.152/30 | 10.4.85.153 – 10.4.85.154 | 10.4.85.155 |
| 104 | 10.4.85.156/30 | 10.4.85.157 – 10.4.85.158 | 10.4.85.159 |
| 105 | 10.4.85.160/30 | 10.4.85.161 – 10.4.85.162 | 10.4.85.163 |
| 106 | 10.4.85.164/30 | 10.4.85.165 – 10.4.85.166 | 10.4.85.167 |
| 107 | 10.4.85.168/30 | 10.4.85.169 – 10.4.85.170 | 10.4.85.171 |
| 108 | 10.4.85.172/30 | 10.4.85.173 – 10.4.85.174 | 10.4.85.175 |
| 109 | 10.4.85.176/30 | 10.4.85.177 – 10.4.85.178 | 10.4.85.179 |
| 110 | 10.4.85.180/30 | 10.4.85.181 – 10.4.85.182 | 10.4.85.183 |
| 111 | 10.4.85.184/30 | 10.4.85.185 – 10.4.85.186 | 10.4.85.187 |
| 112 | 10.4.85.188/30 | 10.4.85.189 – 10.4.85.190 | 10.4.85.191 |
| 113 | 10.4.85.192/30 | 10.4.85.193 – 10.4.85.194 | 10.4.85.195 |
| 114 | 10.4.85.196/30 | 10.4.85.197 – 10.4.85.198 | 10.4.85.199 |
| 115 | 10.4.85.200/30 | 10.4.85.201 – 10.4.85.202 | 10.4.85.203 |
| 116 | 10.4.85.204/30 | 10.4.85.205 – 10.4.85.206 | 10.4.85.207 |
| 117 | 10.4.85.208/30 | 10.4.85.209 – 10.4.85.210 | 10.4.85.211 |
| 118 | 10.4.85.212/30 | 10.4.85.213 – 10.4.85.214 | 10.4.85.215 |
| 119 | 10.4.85.216/30 | 10.4.85.217 – 10.4.85.218 | 10.4.85.219 |
| 120 | 10.4.85.220/30 | 10.4.85.221 – 10.4.85.222 | 10.4.85.223 |
| 121 | 10.4.85.224/30 | 10.4.85.225 – 10.4.85.226 | 10.4.85.227 |
| 122 | 10.4.85.228/30 | 10.4.85.229 – 10.4.85.230 | 10.4.85.231 |
| 123 | 10.4.85.232/30 | 10.4.85.233 – 10.4.85.234 | 10.4.85.235 |
| 124 | 10.4.85.236/30 | 10.4.85.237 – 10.4.85.238 | 10.4.85.239 |
| 125 | 10.4.85.240/30 | 10.4.85.241 – 10.4.85.242 | 10.4.85.243 |
| 126 | 10.4.85.244/30 | 10.4.85.245 – 10.4.85.246 | 10.4.85.247 |
| 127 | 10.4.85.248/30 | 10.4.85.249 – 10.4.85.250 | 10.4.85.251 |
| 128 | 10.4.85.252/30 | 10.4.85.253 – 10.4.85.254 | 10.4.85.255 |
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.