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)10.167.220.0/23
network10.167.220.0/23
broadcast10.167.221.255
first host10.167.220.1
last host10.167.221.254
subnet mask255.255.254.0
wildcard0.0.1.255
addresses512
usable hosts510
classA
ipcalc 10.167.220.0/23
address00001010.10100111.11011100.00000000
subnet mask11111111.11111111.11111110.00000000
network00001010.10100111.11011100.00000000
broadcast00001010.10100111.11011101.11111111
green = network part, grey = host part
hex0x0aa7dc00
decimal178772992
reverse dns0.220.167.10.in-addr.arpa
ipv4-mapped::ffff:aa7:dc00
/23 split into /30 · 128 subnets
close ×| # | network | host range | broadcast |
|---|---|---|---|
| 1 | 10.167.220.0/30 | 10.167.220.1 – 10.167.220.2 | 10.167.220.3 |
| 2 | 10.167.220.4/30 | 10.167.220.5 – 10.167.220.6 | 10.167.220.7 |
| 3 | 10.167.220.8/30 | 10.167.220.9 – 10.167.220.10 | 10.167.220.11 |
| 4 | 10.167.220.12/30 | 10.167.220.13 – 10.167.220.14 | 10.167.220.15 |
| 5 | 10.167.220.16/30 | 10.167.220.17 – 10.167.220.18 | 10.167.220.19 |
| 6 | 10.167.220.20/30 | 10.167.220.21 – 10.167.220.22 | 10.167.220.23 |
| 7 | 10.167.220.24/30 | 10.167.220.25 – 10.167.220.26 | 10.167.220.27 |
| 8 | 10.167.220.28/30 | 10.167.220.29 – 10.167.220.30 | 10.167.220.31 |
| 9 | 10.167.220.32/30 | 10.167.220.33 – 10.167.220.34 | 10.167.220.35 |
| 10 | 10.167.220.36/30 | 10.167.220.37 – 10.167.220.38 | 10.167.220.39 |
| 11 | 10.167.220.40/30 | 10.167.220.41 – 10.167.220.42 | 10.167.220.43 |
| 12 | 10.167.220.44/30 | 10.167.220.45 – 10.167.220.46 | 10.167.220.47 |
| 13 | 10.167.220.48/30 | 10.167.220.49 – 10.167.220.50 | 10.167.220.51 |
| 14 | 10.167.220.52/30 | 10.167.220.53 – 10.167.220.54 | 10.167.220.55 |
| 15 | 10.167.220.56/30 | 10.167.220.57 – 10.167.220.58 | 10.167.220.59 |
| 16 | 10.167.220.60/30 | 10.167.220.61 – 10.167.220.62 | 10.167.220.63 |
| 17 | 10.167.220.64/30 | 10.167.220.65 – 10.167.220.66 | 10.167.220.67 |
| 18 | 10.167.220.68/30 | 10.167.220.69 – 10.167.220.70 | 10.167.220.71 |
| 19 | 10.167.220.72/30 | 10.167.220.73 – 10.167.220.74 | 10.167.220.75 |
| 20 | 10.167.220.76/30 | 10.167.220.77 – 10.167.220.78 | 10.167.220.79 |
| 21 | 10.167.220.80/30 | 10.167.220.81 – 10.167.220.82 | 10.167.220.83 |
| 22 | 10.167.220.84/30 | 10.167.220.85 – 10.167.220.86 | 10.167.220.87 |
| 23 | 10.167.220.88/30 | 10.167.220.89 – 10.167.220.90 | 10.167.220.91 |
| 24 | 10.167.220.92/30 | 10.167.220.93 – 10.167.220.94 | 10.167.220.95 |
| 25 | 10.167.220.96/30 | 10.167.220.97 – 10.167.220.98 | 10.167.220.99 |
| 26 | 10.167.220.100/30 | 10.167.220.101 – 10.167.220.102 | 10.167.220.103 |
| 27 | 10.167.220.104/30 | 10.167.220.105 – 10.167.220.106 | 10.167.220.107 |
| 28 | 10.167.220.108/30 | 10.167.220.109 – 10.167.220.110 | 10.167.220.111 |
| 29 | 10.167.220.112/30 | 10.167.220.113 – 10.167.220.114 | 10.167.220.115 |
| 30 | 10.167.220.116/30 | 10.167.220.117 – 10.167.220.118 | 10.167.220.119 |
| 31 | 10.167.220.120/30 | 10.167.220.121 – 10.167.220.122 | 10.167.220.123 |
| 32 | 10.167.220.124/30 | 10.167.220.125 – 10.167.220.126 | 10.167.220.127 |
| 33 | 10.167.220.128/30 | 10.167.220.129 – 10.167.220.130 | 10.167.220.131 |
| 34 | 10.167.220.132/30 | 10.167.220.133 – 10.167.220.134 | 10.167.220.135 |
| 35 | 10.167.220.136/30 | 10.167.220.137 – 10.167.220.138 | 10.167.220.139 |
| 36 | 10.167.220.140/30 | 10.167.220.141 – 10.167.220.142 | 10.167.220.143 |
| 37 | 10.167.220.144/30 | 10.167.220.145 – 10.167.220.146 | 10.167.220.147 |
| 38 | 10.167.220.148/30 | 10.167.220.149 – 10.167.220.150 | 10.167.220.151 |
| 39 | 10.167.220.152/30 | 10.167.220.153 – 10.167.220.154 | 10.167.220.155 |
| 40 | 10.167.220.156/30 | 10.167.220.157 – 10.167.220.158 | 10.167.220.159 |
| 41 | 10.167.220.160/30 | 10.167.220.161 – 10.167.220.162 | 10.167.220.163 |
| 42 | 10.167.220.164/30 | 10.167.220.165 – 10.167.220.166 | 10.167.220.167 |
| 43 | 10.167.220.168/30 | 10.167.220.169 – 10.167.220.170 | 10.167.220.171 |
| 44 | 10.167.220.172/30 | 10.167.220.173 – 10.167.220.174 | 10.167.220.175 |
| 45 | 10.167.220.176/30 | 10.167.220.177 – 10.167.220.178 | 10.167.220.179 |
| 46 | 10.167.220.180/30 | 10.167.220.181 – 10.167.220.182 | 10.167.220.183 |
| 47 | 10.167.220.184/30 | 10.167.220.185 – 10.167.220.186 | 10.167.220.187 |
| 48 | 10.167.220.188/30 | 10.167.220.189 – 10.167.220.190 | 10.167.220.191 |
| 49 | 10.167.220.192/30 | 10.167.220.193 – 10.167.220.194 | 10.167.220.195 |
| 50 | 10.167.220.196/30 | 10.167.220.197 – 10.167.220.198 | 10.167.220.199 |
| 51 | 10.167.220.200/30 | 10.167.220.201 – 10.167.220.202 | 10.167.220.203 |
| 52 | 10.167.220.204/30 | 10.167.220.205 – 10.167.220.206 | 10.167.220.207 |
| 53 | 10.167.220.208/30 | 10.167.220.209 – 10.167.220.210 | 10.167.220.211 |
| 54 | 10.167.220.212/30 | 10.167.220.213 – 10.167.220.214 | 10.167.220.215 |
| 55 | 10.167.220.216/30 | 10.167.220.217 – 10.167.220.218 | 10.167.220.219 |
| 56 | 10.167.220.220/30 | 10.167.220.221 – 10.167.220.222 | 10.167.220.223 |
| 57 | 10.167.220.224/30 | 10.167.220.225 – 10.167.220.226 | 10.167.220.227 |
| 58 | 10.167.220.228/30 | 10.167.220.229 – 10.167.220.230 | 10.167.220.231 |
| 59 | 10.167.220.232/30 | 10.167.220.233 – 10.167.220.234 | 10.167.220.235 |
| 60 | 10.167.220.236/30 | 10.167.220.237 – 10.167.220.238 | 10.167.220.239 |
| 61 | 10.167.220.240/30 | 10.167.220.241 – 10.167.220.242 | 10.167.220.243 |
| 62 | 10.167.220.244/30 | 10.167.220.245 – 10.167.220.246 | 10.167.220.247 |
| 63 | 10.167.220.248/30 | 10.167.220.249 – 10.167.220.250 | 10.167.220.251 |
| 64 | 10.167.220.252/30 | 10.167.220.253 – 10.167.220.254 | 10.167.220.255 |
| 65 | 10.167.221.0/30 | 10.167.221.1 – 10.167.221.2 | 10.167.221.3 |
| 66 | 10.167.221.4/30 | 10.167.221.5 – 10.167.221.6 | 10.167.221.7 |
| 67 | 10.167.221.8/30 | 10.167.221.9 – 10.167.221.10 | 10.167.221.11 |
| 68 | 10.167.221.12/30 | 10.167.221.13 – 10.167.221.14 | 10.167.221.15 |
| 69 | 10.167.221.16/30 | 10.167.221.17 – 10.167.221.18 | 10.167.221.19 |
| 70 | 10.167.221.20/30 | 10.167.221.21 – 10.167.221.22 | 10.167.221.23 |
| 71 | 10.167.221.24/30 | 10.167.221.25 – 10.167.221.26 | 10.167.221.27 |
| 72 | 10.167.221.28/30 | 10.167.221.29 – 10.167.221.30 | 10.167.221.31 |
| 73 | 10.167.221.32/30 | 10.167.221.33 – 10.167.221.34 | 10.167.221.35 |
| 74 | 10.167.221.36/30 | 10.167.221.37 – 10.167.221.38 | 10.167.221.39 |
| 75 | 10.167.221.40/30 | 10.167.221.41 – 10.167.221.42 | 10.167.221.43 |
| 76 | 10.167.221.44/30 | 10.167.221.45 – 10.167.221.46 | 10.167.221.47 |
| 77 | 10.167.221.48/30 | 10.167.221.49 – 10.167.221.50 | 10.167.221.51 |
| 78 | 10.167.221.52/30 | 10.167.221.53 – 10.167.221.54 | 10.167.221.55 |
| 79 | 10.167.221.56/30 | 10.167.221.57 – 10.167.221.58 | 10.167.221.59 |
| 80 | 10.167.221.60/30 | 10.167.221.61 – 10.167.221.62 | 10.167.221.63 |
| 81 | 10.167.221.64/30 | 10.167.221.65 – 10.167.221.66 | 10.167.221.67 |
| 82 | 10.167.221.68/30 | 10.167.221.69 – 10.167.221.70 | 10.167.221.71 |
| 83 | 10.167.221.72/30 | 10.167.221.73 – 10.167.221.74 | 10.167.221.75 |
| 84 | 10.167.221.76/30 | 10.167.221.77 – 10.167.221.78 | 10.167.221.79 |
| 85 | 10.167.221.80/30 | 10.167.221.81 – 10.167.221.82 | 10.167.221.83 |
| 86 | 10.167.221.84/30 | 10.167.221.85 – 10.167.221.86 | 10.167.221.87 |
| 87 | 10.167.221.88/30 | 10.167.221.89 – 10.167.221.90 | 10.167.221.91 |
| 88 | 10.167.221.92/30 | 10.167.221.93 – 10.167.221.94 | 10.167.221.95 |
| 89 | 10.167.221.96/30 | 10.167.221.97 – 10.167.221.98 | 10.167.221.99 |
| 90 | 10.167.221.100/30 | 10.167.221.101 – 10.167.221.102 | 10.167.221.103 |
| 91 | 10.167.221.104/30 | 10.167.221.105 – 10.167.221.106 | 10.167.221.107 |
| 92 | 10.167.221.108/30 | 10.167.221.109 – 10.167.221.110 | 10.167.221.111 |
| 93 | 10.167.221.112/30 | 10.167.221.113 – 10.167.221.114 | 10.167.221.115 |
| 94 | 10.167.221.116/30 | 10.167.221.117 – 10.167.221.118 | 10.167.221.119 |
| 95 | 10.167.221.120/30 | 10.167.221.121 – 10.167.221.122 | 10.167.221.123 |
| 96 | 10.167.221.124/30 | 10.167.221.125 – 10.167.221.126 | 10.167.221.127 |
| 97 | 10.167.221.128/30 | 10.167.221.129 – 10.167.221.130 | 10.167.221.131 |
| 98 | 10.167.221.132/30 | 10.167.221.133 – 10.167.221.134 | 10.167.221.135 |
| 99 | 10.167.221.136/30 | 10.167.221.137 – 10.167.221.138 | 10.167.221.139 |
| 100 | 10.167.221.140/30 | 10.167.221.141 – 10.167.221.142 | 10.167.221.143 |
| 101 | 10.167.221.144/30 | 10.167.221.145 – 10.167.221.146 | 10.167.221.147 |
| 102 | 10.167.221.148/30 | 10.167.221.149 – 10.167.221.150 | 10.167.221.151 |
| 103 | 10.167.221.152/30 | 10.167.221.153 – 10.167.221.154 | 10.167.221.155 |
| 104 | 10.167.221.156/30 | 10.167.221.157 – 10.167.221.158 | 10.167.221.159 |
| 105 | 10.167.221.160/30 | 10.167.221.161 – 10.167.221.162 | 10.167.221.163 |
| 106 | 10.167.221.164/30 | 10.167.221.165 – 10.167.221.166 | 10.167.221.167 |
| 107 | 10.167.221.168/30 | 10.167.221.169 – 10.167.221.170 | 10.167.221.171 |
| 108 | 10.167.221.172/30 | 10.167.221.173 – 10.167.221.174 | 10.167.221.175 |
| 109 | 10.167.221.176/30 | 10.167.221.177 – 10.167.221.178 | 10.167.221.179 |
| 110 | 10.167.221.180/30 | 10.167.221.181 – 10.167.221.182 | 10.167.221.183 |
| 111 | 10.167.221.184/30 | 10.167.221.185 – 10.167.221.186 | 10.167.221.187 |
| 112 | 10.167.221.188/30 | 10.167.221.189 – 10.167.221.190 | 10.167.221.191 |
| 113 | 10.167.221.192/30 | 10.167.221.193 – 10.167.221.194 | 10.167.221.195 |
| 114 | 10.167.221.196/30 | 10.167.221.197 – 10.167.221.198 | 10.167.221.199 |
| 115 | 10.167.221.200/30 | 10.167.221.201 – 10.167.221.202 | 10.167.221.203 |
| 116 | 10.167.221.204/30 | 10.167.221.205 – 10.167.221.206 | 10.167.221.207 |
| 117 | 10.167.221.208/30 | 10.167.221.209 – 10.167.221.210 | 10.167.221.211 |
| 118 | 10.167.221.212/30 | 10.167.221.213 – 10.167.221.214 | 10.167.221.215 |
| 119 | 10.167.221.216/30 | 10.167.221.217 – 10.167.221.218 | 10.167.221.219 |
| 120 | 10.167.221.220/30 | 10.167.221.221 – 10.167.221.222 | 10.167.221.223 |
| 121 | 10.167.221.224/30 | 10.167.221.225 – 10.167.221.226 | 10.167.221.227 |
| 122 | 10.167.221.228/30 | 10.167.221.229 – 10.167.221.230 | 10.167.221.231 |
| 123 | 10.167.221.232/30 | 10.167.221.233 – 10.167.221.234 | 10.167.221.235 |
| 124 | 10.167.221.236/30 | 10.167.221.237 – 10.167.221.238 | 10.167.221.239 |
| 125 | 10.167.221.240/30 | 10.167.221.241 – 10.167.221.242 | 10.167.221.243 |
| 126 | 10.167.221.244/30 | 10.167.221.245 – 10.167.221.246 | 10.167.221.247 |
| 127 | 10.167.221.248/30 | 10.167.221.249 – 10.167.221.250 | 10.167.221.251 |
| 128 | 10.167.221.252/30 | 10.167.221.253 – 10.167.221.254 | 10.167.221.255 |
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.