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)10.77.210.0/23
network10.77.210.0/23
broadcast10.77.211.255
first host10.77.210.1
last host10.77.211.254
subnet mask255.255.254.0
wildcard0.0.1.255
addresses512
usable hosts510
classA
ipcalc 10.77.210.0/23
address00001010.01001101.11010010.00000000
subnet mask11111111.11111111.11111110.00000000
network00001010.01001101.11010010.00000000
broadcast00001010.01001101.11010011.11111111
green = network part, grey = host part
hex0x0a4dd200
decimal172872192
reverse dns0.210.77.10.in-addr.arpa
ipv4-mapped::ffff:a4d:d200
/23 split into /30 · 128 subnets
close ×| # | network | host range | broadcast |
|---|---|---|---|
| 1 | 10.77.210.0/30 | 10.77.210.1 – 10.77.210.2 | 10.77.210.3 |
| 2 | 10.77.210.4/30 | 10.77.210.5 – 10.77.210.6 | 10.77.210.7 |
| 3 | 10.77.210.8/30 | 10.77.210.9 – 10.77.210.10 | 10.77.210.11 |
| 4 | 10.77.210.12/30 | 10.77.210.13 – 10.77.210.14 | 10.77.210.15 |
| 5 | 10.77.210.16/30 | 10.77.210.17 – 10.77.210.18 | 10.77.210.19 |
| 6 | 10.77.210.20/30 | 10.77.210.21 – 10.77.210.22 | 10.77.210.23 |
| 7 | 10.77.210.24/30 | 10.77.210.25 – 10.77.210.26 | 10.77.210.27 |
| 8 | 10.77.210.28/30 | 10.77.210.29 – 10.77.210.30 | 10.77.210.31 |
| 9 | 10.77.210.32/30 | 10.77.210.33 – 10.77.210.34 | 10.77.210.35 |
| 10 | 10.77.210.36/30 | 10.77.210.37 – 10.77.210.38 | 10.77.210.39 |
| 11 | 10.77.210.40/30 | 10.77.210.41 – 10.77.210.42 | 10.77.210.43 |
| 12 | 10.77.210.44/30 | 10.77.210.45 – 10.77.210.46 | 10.77.210.47 |
| 13 | 10.77.210.48/30 | 10.77.210.49 – 10.77.210.50 | 10.77.210.51 |
| 14 | 10.77.210.52/30 | 10.77.210.53 – 10.77.210.54 | 10.77.210.55 |
| 15 | 10.77.210.56/30 | 10.77.210.57 – 10.77.210.58 | 10.77.210.59 |
| 16 | 10.77.210.60/30 | 10.77.210.61 – 10.77.210.62 | 10.77.210.63 |
| 17 | 10.77.210.64/30 | 10.77.210.65 – 10.77.210.66 | 10.77.210.67 |
| 18 | 10.77.210.68/30 | 10.77.210.69 – 10.77.210.70 | 10.77.210.71 |
| 19 | 10.77.210.72/30 | 10.77.210.73 – 10.77.210.74 | 10.77.210.75 |
| 20 | 10.77.210.76/30 | 10.77.210.77 – 10.77.210.78 | 10.77.210.79 |
| 21 | 10.77.210.80/30 | 10.77.210.81 – 10.77.210.82 | 10.77.210.83 |
| 22 | 10.77.210.84/30 | 10.77.210.85 – 10.77.210.86 | 10.77.210.87 |
| 23 | 10.77.210.88/30 | 10.77.210.89 – 10.77.210.90 | 10.77.210.91 |
| 24 | 10.77.210.92/30 | 10.77.210.93 – 10.77.210.94 | 10.77.210.95 |
| 25 | 10.77.210.96/30 | 10.77.210.97 – 10.77.210.98 | 10.77.210.99 |
| 26 | 10.77.210.100/30 | 10.77.210.101 – 10.77.210.102 | 10.77.210.103 |
| 27 | 10.77.210.104/30 | 10.77.210.105 – 10.77.210.106 | 10.77.210.107 |
| 28 | 10.77.210.108/30 | 10.77.210.109 – 10.77.210.110 | 10.77.210.111 |
| 29 | 10.77.210.112/30 | 10.77.210.113 – 10.77.210.114 | 10.77.210.115 |
| 30 | 10.77.210.116/30 | 10.77.210.117 – 10.77.210.118 | 10.77.210.119 |
| 31 | 10.77.210.120/30 | 10.77.210.121 – 10.77.210.122 | 10.77.210.123 |
| 32 | 10.77.210.124/30 | 10.77.210.125 – 10.77.210.126 | 10.77.210.127 |
| 33 | 10.77.210.128/30 | 10.77.210.129 – 10.77.210.130 | 10.77.210.131 |
| 34 | 10.77.210.132/30 | 10.77.210.133 – 10.77.210.134 | 10.77.210.135 |
| 35 | 10.77.210.136/30 | 10.77.210.137 – 10.77.210.138 | 10.77.210.139 |
| 36 | 10.77.210.140/30 | 10.77.210.141 – 10.77.210.142 | 10.77.210.143 |
| 37 | 10.77.210.144/30 | 10.77.210.145 – 10.77.210.146 | 10.77.210.147 |
| 38 | 10.77.210.148/30 | 10.77.210.149 – 10.77.210.150 | 10.77.210.151 |
| 39 | 10.77.210.152/30 | 10.77.210.153 – 10.77.210.154 | 10.77.210.155 |
| 40 | 10.77.210.156/30 | 10.77.210.157 – 10.77.210.158 | 10.77.210.159 |
| 41 | 10.77.210.160/30 | 10.77.210.161 – 10.77.210.162 | 10.77.210.163 |
| 42 | 10.77.210.164/30 | 10.77.210.165 – 10.77.210.166 | 10.77.210.167 |
| 43 | 10.77.210.168/30 | 10.77.210.169 – 10.77.210.170 | 10.77.210.171 |
| 44 | 10.77.210.172/30 | 10.77.210.173 – 10.77.210.174 | 10.77.210.175 |
| 45 | 10.77.210.176/30 | 10.77.210.177 – 10.77.210.178 | 10.77.210.179 |
| 46 | 10.77.210.180/30 | 10.77.210.181 – 10.77.210.182 | 10.77.210.183 |
| 47 | 10.77.210.184/30 | 10.77.210.185 – 10.77.210.186 | 10.77.210.187 |
| 48 | 10.77.210.188/30 | 10.77.210.189 – 10.77.210.190 | 10.77.210.191 |
| 49 | 10.77.210.192/30 | 10.77.210.193 – 10.77.210.194 | 10.77.210.195 |
| 50 | 10.77.210.196/30 | 10.77.210.197 – 10.77.210.198 | 10.77.210.199 |
| 51 | 10.77.210.200/30 | 10.77.210.201 – 10.77.210.202 | 10.77.210.203 |
| 52 | 10.77.210.204/30 | 10.77.210.205 – 10.77.210.206 | 10.77.210.207 |
| 53 | 10.77.210.208/30 | 10.77.210.209 – 10.77.210.210 | 10.77.210.211 |
| 54 | 10.77.210.212/30 | 10.77.210.213 – 10.77.210.214 | 10.77.210.215 |
| 55 | 10.77.210.216/30 | 10.77.210.217 – 10.77.210.218 | 10.77.210.219 |
| 56 | 10.77.210.220/30 | 10.77.210.221 – 10.77.210.222 | 10.77.210.223 |
| 57 | 10.77.210.224/30 | 10.77.210.225 – 10.77.210.226 | 10.77.210.227 |
| 58 | 10.77.210.228/30 | 10.77.210.229 – 10.77.210.230 | 10.77.210.231 |
| 59 | 10.77.210.232/30 | 10.77.210.233 – 10.77.210.234 | 10.77.210.235 |
| 60 | 10.77.210.236/30 | 10.77.210.237 – 10.77.210.238 | 10.77.210.239 |
| 61 | 10.77.210.240/30 | 10.77.210.241 – 10.77.210.242 | 10.77.210.243 |
| 62 | 10.77.210.244/30 | 10.77.210.245 – 10.77.210.246 | 10.77.210.247 |
| 63 | 10.77.210.248/30 | 10.77.210.249 – 10.77.210.250 | 10.77.210.251 |
| 64 | 10.77.210.252/30 | 10.77.210.253 – 10.77.210.254 | 10.77.210.255 |
| 65 | 10.77.211.0/30 | 10.77.211.1 – 10.77.211.2 | 10.77.211.3 |
| 66 | 10.77.211.4/30 | 10.77.211.5 – 10.77.211.6 | 10.77.211.7 |
| 67 | 10.77.211.8/30 | 10.77.211.9 – 10.77.211.10 | 10.77.211.11 |
| 68 | 10.77.211.12/30 | 10.77.211.13 – 10.77.211.14 | 10.77.211.15 |
| 69 | 10.77.211.16/30 | 10.77.211.17 – 10.77.211.18 | 10.77.211.19 |
| 70 | 10.77.211.20/30 | 10.77.211.21 – 10.77.211.22 | 10.77.211.23 |
| 71 | 10.77.211.24/30 | 10.77.211.25 – 10.77.211.26 | 10.77.211.27 |
| 72 | 10.77.211.28/30 | 10.77.211.29 – 10.77.211.30 | 10.77.211.31 |
| 73 | 10.77.211.32/30 | 10.77.211.33 – 10.77.211.34 | 10.77.211.35 |
| 74 | 10.77.211.36/30 | 10.77.211.37 – 10.77.211.38 | 10.77.211.39 |
| 75 | 10.77.211.40/30 | 10.77.211.41 – 10.77.211.42 | 10.77.211.43 |
| 76 | 10.77.211.44/30 | 10.77.211.45 – 10.77.211.46 | 10.77.211.47 |
| 77 | 10.77.211.48/30 | 10.77.211.49 – 10.77.211.50 | 10.77.211.51 |
| 78 | 10.77.211.52/30 | 10.77.211.53 – 10.77.211.54 | 10.77.211.55 |
| 79 | 10.77.211.56/30 | 10.77.211.57 – 10.77.211.58 | 10.77.211.59 |
| 80 | 10.77.211.60/30 | 10.77.211.61 – 10.77.211.62 | 10.77.211.63 |
| 81 | 10.77.211.64/30 | 10.77.211.65 – 10.77.211.66 | 10.77.211.67 |
| 82 | 10.77.211.68/30 | 10.77.211.69 – 10.77.211.70 | 10.77.211.71 |
| 83 | 10.77.211.72/30 | 10.77.211.73 – 10.77.211.74 | 10.77.211.75 |
| 84 | 10.77.211.76/30 | 10.77.211.77 – 10.77.211.78 | 10.77.211.79 |
| 85 | 10.77.211.80/30 | 10.77.211.81 – 10.77.211.82 | 10.77.211.83 |
| 86 | 10.77.211.84/30 | 10.77.211.85 – 10.77.211.86 | 10.77.211.87 |
| 87 | 10.77.211.88/30 | 10.77.211.89 – 10.77.211.90 | 10.77.211.91 |
| 88 | 10.77.211.92/30 | 10.77.211.93 – 10.77.211.94 | 10.77.211.95 |
| 89 | 10.77.211.96/30 | 10.77.211.97 – 10.77.211.98 | 10.77.211.99 |
| 90 | 10.77.211.100/30 | 10.77.211.101 – 10.77.211.102 | 10.77.211.103 |
| 91 | 10.77.211.104/30 | 10.77.211.105 – 10.77.211.106 | 10.77.211.107 |
| 92 | 10.77.211.108/30 | 10.77.211.109 – 10.77.211.110 | 10.77.211.111 |
| 93 | 10.77.211.112/30 | 10.77.211.113 – 10.77.211.114 | 10.77.211.115 |
| 94 | 10.77.211.116/30 | 10.77.211.117 – 10.77.211.118 | 10.77.211.119 |
| 95 | 10.77.211.120/30 | 10.77.211.121 – 10.77.211.122 | 10.77.211.123 |
| 96 | 10.77.211.124/30 | 10.77.211.125 – 10.77.211.126 | 10.77.211.127 |
| 97 | 10.77.211.128/30 | 10.77.211.129 – 10.77.211.130 | 10.77.211.131 |
| 98 | 10.77.211.132/30 | 10.77.211.133 – 10.77.211.134 | 10.77.211.135 |
| 99 | 10.77.211.136/30 | 10.77.211.137 – 10.77.211.138 | 10.77.211.139 |
| 100 | 10.77.211.140/30 | 10.77.211.141 – 10.77.211.142 | 10.77.211.143 |
| 101 | 10.77.211.144/30 | 10.77.211.145 – 10.77.211.146 | 10.77.211.147 |
| 102 | 10.77.211.148/30 | 10.77.211.149 – 10.77.211.150 | 10.77.211.151 |
| 103 | 10.77.211.152/30 | 10.77.211.153 – 10.77.211.154 | 10.77.211.155 |
| 104 | 10.77.211.156/30 | 10.77.211.157 – 10.77.211.158 | 10.77.211.159 |
| 105 | 10.77.211.160/30 | 10.77.211.161 – 10.77.211.162 | 10.77.211.163 |
| 106 | 10.77.211.164/30 | 10.77.211.165 – 10.77.211.166 | 10.77.211.167 |
| 107 | 10.77.211.168/30 | 10.77.211.169 – 10.77.211.170 | 10.77.211.171 |
| 108 | 10.77.211.172/30 | 10.77.211.173 – 10.77.211.174 | 10.77.211.175 |
| 109 | 10.77.211.176/30 | 10.77.211.177 – 10.77.211.178 | 10.77.211.179 |
| 110 | 10.77.211.180/30 | 10.77.211.181 – 10.77.211.182 | 10.77.211.183 |
| 111 | 10.77.211.184/30 | 10.77.211.185 – 10.77.211.186 | 10.77.211.187 |
| 112 | 10.77.211.188/30 | 10.77.211.189 – 10.77.211.190 | 10.77.211.191 |
| 113 | 10.77.211.192/30 | 10.77.211.193 – 10.77.211.194 | 10.77.211.195 |
| 114 | 10.77.211.196/30 | 10.77.211.197 – 10.77.211.198 | 10.77.211.199 |
| 115 | 10.77.211.200/30 | 10.77.211.201 – 10.77.211.202 | 10.77.211.203 |
| 116 | 10.77.211.204/30 | 10.77.211.205 – 10.77.211.206 | 10.77.211.207 |
| 117 | 10.77.211.208/30 | 10.77.211.209 – 10.77.211.210 | 10.77.211.211 |
| 118 | 10.77.211.212/30 | 10.77.211.213 – 10.77.211.214 | 10.77.211.215 |
| 119 | 10.77.211.216/30 | 10.77.211.217 – 10.77.211.218 | 10.77.211.219 |
| 120 | 10.77.211.220/30 | 10.77.211.221 – 10.77.211.222 | 10.77.211.223 |
| 121 | 10.77.211.224/30 | 10.77.211.225 – 10.77.211.226 | 10.77.211.227 |
| 122 | 10.77.211.228/30 | 10.77.211.229 – 10.77.211.230 | 10.77.211.231 |
| 123 | 10.77.211.232/30 | 10.77.211.233 – 10.77.211.234 | 10.77.211.235 |
| 124 | 10.77.211.236/30 | 10.77.211.237 – 10.77.211.238 | 10.77.211.239 |
| 125 | 10.77.211.240/30 | 10.77.211.241 – 10.77.211.242 | 10.77.211.243 |
| 126 | 10.77.211.244/30 | 10.77.211.245 – 10.77.211.246 | 10.77.211.247 |
| 127 | 10.77.211.248/30 | 10.77.211.249 – 10.77.211.250 | 10.77.211.251 |
| 128 | 10.77.211.252/30 | 10.77.211.253 – 10.77.211.254 | 10.77.211.255 |
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.