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)10.74.6.0/23
network10.74.6.0/23
broadcast10.74.7.255
first host10.74.6.1
last host10.74.7.254
subnet mask255.255.254.0
wildcard0.0.1.255
addresses512
usable hosts510
classA
ipcalc 10.74.6.0/23
address00001010.01001010.00000110.00000000
subnet mask11111111.11111111.11111110.00000000
network00001010.01001010.00000110.00000000
broadcast00001010.01001010.00000111.11111111
green = network part, grey = host part
hex0x0a4a0600
decimal172623360
reverse dns0.6.74.10.in-addr.arpa
ipv4-mapped::ffff:a4a:600
/23 split into /30 · 128 subnets
close ×| # | network | host range | broadcast |
|---|---|---|---|
| 1 | 10.74.6.0/30 | 10.74.6.1 – 10.74.6.2 | 10.74.6.3 |
| 2 | 10.74.6.4/30 | 10.74.6.5 – 10.74.6.6 | 10.74.6.7 |
| 3 | 10.74.6.8/30 | 10.74.6.9 – 10.74.6.10 | 10.74.6.11 |
| 4 | 10.74.6.12/30 | 10.74.6.13 – 10.74.6.14 | 10.74.6.15 |
| 5 | 10.74.6.16/30 | 10.74.6.17 – 10.74.6.18 | 10.74.6.19 |
| 6 | 10.74.6.20/30 | 10.74.6.21 – 10.74.6.22 | 10.74.6.23 |
| 7 | 10.74.6.24/30 | 10.74.6.25 – 10.74.6.26 | 10.74.6.27 |
| 8 | 10.74.6.28/30 | 10.74.6.29 – 10.74.6.30 | 10.74.6.31 |
| 9 | 10.74.6.32/30 | 10.74.6.33 – 10.74.6.34 | 10.74.6.35 |
| 10 | 10.74.6.36/30 | 10.74.6.37 – 10.74.6.38 | 10.74.6.39 |
| 11 | 10.74.6.40/30 | 10.74.6.41 – 10.74.6.42 | 10.74.6.43 |
| 12 | 10.74.6.44/30 | 10.74.6.45 – 10.74.6.46 | 10.74.6.47 |
| 13 | 10.74.6.48/30 | 10.74.6.49 – 10.74.6.50 | 10.74.6.51 |
| 14 | 10.74.6.52/30 | 10.74.6.53 – 10.74.6.54 | 10.74.6.55 |
| 15 | 10.74.6.56/30 | 10.74.6.57 – 10.74.6.58 | 10.74.6.59 |
| 16 | 10.74.6.60/30 | 10.74.6.61 – 10.74.6.62 | 10.74.6.63 |
| 17 | 10.74.6.64/30 | 10.74.6.65 – 10.74.6.66 | 10.74.6.67 |
| 18 | 10.74.6.68/30 | 10.74.6.69 – 10.74.6.70 | 10.74.6.71 |
| 19 | 10.74.6.72/30 | 10.74.6.73 – 10.74.6.74 | 10.74.6.75 |
| 20 | 10.74.6.76/30 | 10.74.6.77 – 10.74.6.78 | 10.74.6.79 |
| 21 | 10.74.6.80/30 | 10.74.6.81 – 10.74.6.82 | 10.74.6.83 |
| 22 | 10.74.6.84/30 | 10.74.6.85 – 10.74.6.86 | 10.74.6.87 |
| 23 | 10.74.6.88/30 | 10.74.6.89 – 10.74.6.90 | 10.74.6.91 |
| 24 | 10.74.6.92/30 | 10.74.6.93 – 10.74.6.94 | 10.74.6.95 |
| 25 | 10.74.6.96/30 | 10.74.6.97 – 10.74.6.98 | 10.74.6.99 |
| 26 | 10.74.6.100/30 | 10.74.6.101 – 10.74.6.102 | 10.74.6.103 |
| 27 | 10.74.6.104/30 | 10.74.6.105 – 10.74.6.106 | 10.74.6.107 |
| 28 | 10.74.6.108/30 | 10.74.6.109 – 10.74.6.110 | 10.74.6.111 |
| 29 | 10.74.6.112/30 | 10.74.6.113 – 10.74.6.114 | 10.74.6.115 |
| 30 | 10.74.6.116/30 | 10.74.6.117 – 10.74.6.118 | 10.74.6.119 |
| 31 | 10.74.6.120/30 | 10.74.6.121 – 10.74.6.122 | 10.74.6.123 |
| 32 | 10.74.6.124/30 | 10.74.6.125 – 10.74.6.126 | 10.74.6.127 |
| 33 | 10.74.6.128/30 | 10.74.6.129 – 10.74.6.130 | 10.74.6.131 |
| 34 | 10.74.6.132/30 | 10.74.6.133 – 10.74.6.134 | 10.74.6.135 |
| 35 | 10.74.6.136/30 | 10.74.6.137 – 10.74.6.138 | 10.74.6.139 |
| 36 | 10.74.6.140/30 | 10.74.6.141 – 10.74.6.142 | 10.74.6.143 |
| 37 | 10.74.6.144/30 | 10.74.6.145 – 10.74.6.146 | 10.74.6.147 |
| 38 | 10.74.6.148/30 | 10.74.6.149 – 10.74.6.150 | 10.74.6.151 |
| 39 | 10.74.6.152/30 | 10.74.6.153 – 10.74.6.154 | 10.74.6.155 |
| 40 | 10.74.6.156/30 | 10.74.6.157 – 10.74.6.158 | 10.74.6.159 |
| 41 | 10.74.6.160/30 | 10.74.6.161 – 10.74.6.162 | 10.74.6.163 |
| 42 | 10.74.6.164/30 | 10.74.6.165 – 10.74.6.166 | 10.74.6.167 |
| 43 | 10.74.6.168/30 | 10.74.6.169 – 10.74.6.170 | 10.74.6.171 |
| 44 | 10.74.6.172/30 | 10.74.6.173 – 10.74.6.174 | 10.74.6.175 |
| 45 | 10.74.6.176/30 | 10.74.6.177 – 10.74.6.178 | 10.74.6.179 |
| 46 | 10.74.6.180/30 | 10.74.6.181 – 10.74.6.182 | 10.74.6.183 |
| 47 | 10.74.6.184/30 | 10.74.6.185 – 10.74.6.186 | 10.74.6.187 |
| 48 | 10.74.6.188/30 | 10.74.6.189 – 10.74.6.190 | 10.74.6.191 |
| 49 | 10.74.6.192/30 | 10.74.6.193 – 10.74.6.194 | 10.74.6.195 |
| 50 | 10.74.6.196/30 | 10.74.6.197 – 10.74.6.198 | 10.74.6.199 |
| 51 | 10.74.6.200/30 | 10.74.6.201 – 10.74.6.202 | 10.74.6.203 |
| 52 | 10.74.6.204/30 | 10.74.6.205 – 10.74.6.206 | 10.74.6.207 |
| 53 | 10.74.6.208/30 | 10.74.6.209 – 10.74.6.210 | 10.74.6.211 |
| 54 | 10.74.6.212/30 | 10.74.6.213 – 10.74.6.214 | 10.74.6.215 |
| 55 | 10.74.6.216/30 | 10.74.6.217 – 10.74.6.218 | 10.74.6.219 |
| 56 | 10.74.6.220/30 | 10.74.6.221 – 10.74.6.222 | 10.74.6.223 |
| 57 | 10.74.6.224/30 | 10.74.6.225 – 10.74.6.226 | 10.74.6.227 |
| 58 | 10.74.6.228/30 | 10.74.6.229 – 10.74.6.230 | 10.74.6.231 |
| 59 | 10.74.6.232/30 | 10.74.6.233 – 10.74.6.234 | 10.74.6.235 |
| 60 | 10.74.6.236/30 | 10.74.6.237 – 10.74.6.238 | 10.74.6.239 |
| 61 | 10.74.6.240/30 | 10.74.6.241 – 10.74.6.242 | 10.74.6.243 |
| 62 | 10.74.6.244/30 | 10.74.6.245 – 10.74.6.246 | 10.74.6.247 |
| 63 | 10.74.6.248/30 | 10.74.6.249 – 10.74.6.250 | 10.74.6.251 |
| 64 | 10.74.6.252/30 | 10.74.6.253 – 10.74.6.254 | 10.74.6.255 |
| 65 | 10.74.7.0/30 | 10.74.7.1 – 10.74.7.2 | 10.74.7.3 |
| 66 | 10.74.7.4/30 | 10.74.7.5 – 10.74.7.6 | 10.74.7.7 |
| 67 | 10.74.7.8/30 | 10.74.7.9 – 10.74.7.10 | 10.74.7.11 |
| 68 | 10.74.7.12/30 | 10.74.7.13 – 10.74.7.14 | 10.74.7.15 |
| 69 | 10.74.7.16/30 | 10.74.7.17 – 10.74.7.18 | 10.74.7.19 |
| 70 | 10.74.7.20/30 | 10.74.7.21 – 10.74.7.22 | 10.74.7.23 |
| 71 | 10.74.7.24/30 | 10.74.7.25 – 10.74.7.26 | 10.74.7.27 |
| 72 | 10.74.7.28/30 | 10.74.7.29 – 10.74.7.30 | 10.74.7.31 |
| 73 | 10.74.7.32/30 | 10.74.7.33 – 10.74.7.34 | 10.74.7.35 |
| 74 | 10.74.7.36/30 | 10.74.7.37 – 10.74.7.38 | 10.74.7.39 |
| 75 | 10.74.7.40/30 | 10.74.7.41 – 10.74.7.42 | 10.74.7.43 |
| 76 | 10.74.7.44/30 | 10.74.7.45 – 10.74.7.46 | 10.74.7.47 |
| 77 | 10.74.7.48/30 | 10.74.7.49 – 10.74.7.50 | 10.74.7.51 |
| 78 | 10.74.7.52/30 | 10.74.7.53 – 10.74.7.54 | 10.74.7.55 |
| 79 | 10.74.7.56/30 | 10.74.7.57 – 10.74.7.58 | 10.74.7.59 |
| 80 | 10.74.7.60/30 | 10.74.7.61 – 10.74.7.62 | 10.74.7.63 |
| 81 | 10.74.7.64/30 | 10.74.7.65 – 10.74.7.66 | 10.74.7.67 |
| 82 | 10.74.7.68/30 | 10.74.7.69 – 10.74.7.70 | 10.74.7.71 |
| 83 | 10.74.7.72/30 | 10.74.7.73 – 10.74.7.74 | 10.74.7.75 |
| 84 | 10.74.7.76/30 | 10.74.7.77 – 10.74.7.78 | 10.74.7.79 |
| 85 | 10.74.7.80/30 | 10.74.7.81 – 10.74.7.82 | 10.74.7.83 |
| 86 | 10.74.7.84/30 | 10.74.7.85 – 10.74.7.86 | 10.74.7.87 |
| 87 | 10.74.7.88/30 | 10.74.7.89 – 10.74.7.90 | 10.74.7.91 |
| 88 | 10.74.7.92/30 | 10.74.7.93 – 10.74.7.94 | 10.74.7.95 |
| 89 | 10.74.7.96/30 | 10.74.7.97 – 10.74.7.98 | 10.74.7.99 |
| 90 | 10.74.7.100/30 | 10.74.7.101 – 10.74.7.102 | 10.74.7.103 |
| 91 | 10.74.7.104/30 | 10.74.7.105 – 10.74.7.106 | 10.74.7.107 |
| 92 | 10.74.7.108/30 | 10.74.7.109 – 10.74.7.110 | 10.74.7.111 |
| 93 | 10.74.7.112/30 | 10.74.7.113 – 10.74.7.114 | 10.74.7.115 |
| 94 | 10.74.7.116/30 | 10.74.7.117 – 10.74.7.118 | 10.74.7.119 |
| 95 | 10.74.7.120/30 | 10.74.7.121 – 10.74.7.122 | 10.74.7.123 |
| 96 | 10.74.7.124/30 | 10.74.7.125 – 10.74.7.126 | 10.74.7.127 |
| 97 | 10.74.7.128/30 | 10.74.7.129 – 10.74.7.130 | 10.74.7.131 |
| 98 | 10.74.7.132/30 | 10.74.7.133 – 10.74.7.134 | 10.74.7.135 |
| 99 | 10.74.7.136/30 | 10.74.7.137 – 10.74.7.138 | 10.74.7.139 |
| 100 | 10.74.7.140/30 | 10.74.7.141 – 10.74.7.142 | 10.74.7.143 |
| 101 | 10.74.7.144/30 | 10.74.7.145 – 10.74.7.146 | 10.74.7.147 |
| 102 | 10.74.7.148/30 | 10.74.7.149 – 10.74.7.150 | 10.74.7.151 |
| 103 | 10.74.7.152/30 | 10.74.7.153 – 10.74.7.154 | 10.74.7.155 |
| 104 | 10.74.7.156/30 | 10.74.7.157 – 10.74.7.158 | 10.74.7.159 |
| 105 | 10.74.7.160/30 | 10.74.7.161 – 10.74.7.162 | 10.74.7.163 |
| 106 | 10.74.7.164/30 | 10.74.7.165 – 10.74.7.166 | 10.74.7.167 |
| 107 | 10.74.7.168/30 | 10.74.7.169 – 10.74.7.170 | 10.74.7.171 |
| 108 | 10.74.7.172/30 | 10.74.7.173 – 10.74.7.174 | 10.74.7.175 |
| 109 | 10.74.7.176/30 | 10.74.7.177 – 10.74.7.178 | 10.74.7.179 |
| 110 | 10.74.7.180/30 | 10.74.7.181 – 10.74.7.182 | 10.74.7.183 |
| 111 | 10.74.7.184/30 | 10.74.7.185 – 10.74.7.186 | 10.74.7.187 |
| 112 | 10.74.7.188/30 | 10.74.7.189 – 10.74.7.190 | 10.74.7.191 |
| 113 | 10.74.7.192/30 | 10.74.7.193 – 10.74.7.194 | 10.74.7.195 |
| 114 | 10.74.7.196/30 | 10.74.7.197 – 10.74.7.198 | 10.74.7.199 |
| 115 | 10.74.7.200/30 | 10.74.7.201 – 10.74.7.202 | 10.74.7.203 |
| 116 | 10.74.7.204/30 | 10.74.7.205 – 10.74.7.206 | 10.74.7.207 |
| 117 | 10.74.7.208/30 | 10.74.7.209 – 10.74.7.210 | 10.74.7.211 |
| 118 | 10.74.7.212/30 | 10.74.7.213 – 10.74.7.214 | 10.74.7.215 |
| 119 | 10.74.7.216/30 | 10.74.7.217 – 10.74.7.218 | 10.74.7.219 |
| 120 | 10.74.7.220/30 | 10.74.7.221 – 10.74.7.222 | 10.74.7.223 |
| 121 | 10.74.7.224/30 | 10.74.7.225 – 10.74.7.226 | 10.74.7.227 |
| 122 | 10.74.7.228/30 | 10.74.7.229 – 10.74.7.230 | 10.74.7.231 |
| 123 | 10.74.7.232/30 | 10.74.7.233 – 10.74.7.234 | 10.74.7.235 |
| 124 | 10.74.7.236/30 | 10.74.7.237 – 10.74.7.238 | 10.74.7.239 |
| 125 | 10.74.7.240/30 | 10.74.7.241 – 10.74.7.242 | 10.74.7.243 |
| 126 | 10.74.7.244/30 | 10.74.7.245 – 10.74.7.246 | 10.74.7.247 |
| 127 | 10.74.7.248/30 | 10.74.7.249 – 10.74.7.250 | 10.74.7.251 |
| 128 | 10.74.7.252/30 | 10.74.7.253 – 10.74.7.254 | 10.74.7.255 |
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.