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)10.99.44.0/23
network10.99.44.0/23
broadcast10.99.45.255
first host10.99.44.1
last host10.99.45.254
subnet mask255.255.254.0
wildcard0.0.1.255
addresses512
usable hosts510
classA
ipcalc 10.99.44.0/23
address00001010.01100011.00101100.00000000
subnet mask11111111.11111111.11111110.00000000
network00001010.01100011.00101100.00000000
broadcast00001010.01100011.00101101.11111111
green = network part, grey = host part
hex0x0a632c00
decimal174271488
reverse dns0.44.99.10.in-addr.arpa
ipv4-mapped::ffff:a63:2c00
/23 split into /30 · 128 subnets
close ×| # | network | host range | broadcast |
|---|---|---|---|
| 1 | 10.99.44.0/30 | 10.99.44.1 – 10.99.44.2 | 10.99.44.3 |
| 2 | 10.99.44.4/30 | 10.99.44.5 – 10.99.44.6 | 10.99.44.7 |
| 3 | 10.99.44.8/30 | 10.99.44.9 – 10.99.44.10 | 10.99.44.11 |
| 4 | 10.99.44.12/30 | 10.99.44.13 – 10.99.44.14 | 10.99.44.15 |
| 5 | 10.99.44.16/30 | 10.99.44.17 – 10.99.44.18 | 10.99.44.19 |
| 6 | 10.99.44.20/30 | 10.99.44.21 – 10.99.44.22 | 10.99.44.23 |
| 7 | 10.99.44.24/30 | 10.99.44.25 – 10.99.44.26 | 10.99.44.27 |
| 8 | 10.99.44.28/30 | 10.99.44.29 – 10.99.44.30 | 10.99.44.31 |
| 9 | 10.99.44.32/30 | 10.99.44.33 – 10.99.44.34 | 10.99.44.35 |
| 10 | 10.99.44.36/30 | 10.99.44.37 – 10.99.44.38 | 10.99.44.39 |
| 11 | 10.99.44.40/30 | 10.99.44.41 – 10.99.44.42 | 10.99.44.43 |
| 12 | 10.99.44.44/30 | 10.99.44.45 – 10.99.44.46 | 10.99.44.47 |
| 13 | 10.99.44.48/30 | 10.99.44.49 – 10.99.44.50 | 10.99.44.51 |
| 14 | 10.99.44.52/30 | 10.99.44.53 – 10.99.44.54 | 10.99.44.55 |
| 15 | 10.99.44.56/30 | 10.99.44.57 – 10.99.44.58 | 10.99.44.59 |
| 16 | 10.99.44.60/30 | 10.99.44.61 – 10.99.44.62 | 10.99.44.63 |
| 17 | 10.99.44.64/30 | 10.99.44.65 – 10.99.44.66 | 10.99.44.67 |
| 18 | 10.99.44.68/30 | 10.99.44.69 – 10.99.44.70 | 10.99.44.71 |
| 19 | 10.99.44.72/30 | 10.99.44.73 – 10.99.44.74 | 10.99.44.75 |
| 20 | 10.99.44.76/30 | 10.99.44.77 – 10.99.44.78 | 10.99.44.79 |
| 21 | 10.99.44.80/30 | 10.99.44.81 – 10.99.44.82 | 10.99.44.83 |
| 22 | 10.99.44.84/30 | 10.99.44.85 – 10.99.44.86 | 10.99.44.87 |
| 23 | 10.99.44.88/30 | 10.99.44.89 – 10.99.44.90 | 10.99.44.91 |
| 24 | 10.99.44.92/30 | 10.99.44.93 – 10.99.44.94 | 10.99.44.95 |
| 25 | 10.99.44.96/30 | 10.99.44.97 – 10.99.44.98 | 10.99.44.99 |
| 26 | 10.99.44.100/30 | 10.99.44.101 – 10.99.44.102 | 10.99.44.103 |
| 27 | 10.99.44.104/30 | 10.99.44.105 – 10.99.44.106 | 10.99.44.107 |
| 28 | 10.99.44.108/30 | 10.99.44.109 – 10.99.44.110 | 10.99.44.111 |
| 29 | 10.99.44.112/30 | 10.99.44.113 – 10.99.44.114 | 10.99.44.115 |
| 30 | 10.99.44.116/30 | 10.99.44.117 – 10.99.44.118 | 10.99.44.119 |
| 31 | 10.99.44.120/30 | 10.99.44.121 – 10.99.44.122 | 10.99.44.123 |
| 32 | 10.99.44.124/30 | 10.99.44.125 – 10.99.44.126 | 10.99.44.127 |
| 33 | 10.99.44.128/30 | 10.99.44.129 – 10.99.44.130 | 10.99.44.131 |
| 34 | 10.99.44.132/30 | 10.99.44.133 – 10.99.44.134 | 10.99.44.135 |
| 35 | 10.99.44.136/30 | 10.99.44.137 – 10.99.44.138 | 10.99.44.139 |
| 36 | 10.99.44.140/30 | 10.99.44.141 – 10.99.44.142 | 10.99.44.143 |
| 37 | 10.99.44.144/30 | 10.99.44.145 – 10.99.44.146 | 10.99.44.147 |
| 38 | 10.99.44.148/30 | 10.99.44.149 – 10.99.44.150 | 10.99.44.151 |
| 39 | 10.99.44.152/30 | 10.99.44.153 – 10.99.44.154 | 10.99.44.155 |
| 40 | 10.99.44.156/30 | 10.99.44.157 – 10.99.44.158 | 10.99.44.159 |
| 41 | 10.99.44.160/30 | 10.99.44.161 – 10.99.44.162 | 10.99.44.163 |
| 42 | 10.99.44.164/30 | 10.99.44.165 – 10.99.44.166 | 10.99.44.167 |
| 43 | 10.99.44.168/30 | 10.99.44.169 – 10.99.44.170 | 10.99.44.171 |
| 44 | 10.99.44.172/30 | 10.99.44.173 – 10.99.44.174 | 10.99.44.175 |
| 45 | 10.99.44.176/30 | 10.99.44.177 – 10.99.44.178 | 10.99.44.179 |
| 46 | 10.99.44.180/30 | 10.99.44.181 – 10.99.44.182 | 10.99.44.183 |
| 47 | 10.99.44.184/30 | 10.99.44.185 – 10.99.44.186 | 10.99.44.187 |
| 48 | 10.99.44.188/30 | 10.99.44.189 – 10.99.44.190 | 10.99.44.191 |
| 49 | 10.99.44.192/30 | 10.99.44.193 – 10.99.44.194 | 10.99.44.195 |
| 50 | 10.99.44.196/30 | 10.99.44.197 – 10.99.44.198 | 10.99.44.199 |
| 51 | 10.99.44.200/30 | 10.99.44.201 – 10.99.44.202 | 10.99.44.203 |
| 52 | 10.99.44.204/30 | 10.99.44.205 – 10.99.44.206 | 10.99.44.207 |
| 53 | 10.99.44.208/30 | 10.99.44.209 – 10.99.44.210 | 10.99.44.211 |
| 54 | 10.99.44.212/30 | 10.99.44.213 – 10.99.44.214 | 10.99.44.215 |
| 55 | 10.99.44.216/30 | 10.99.44.217 – 10.99.44.218 | 10.99.44.219 |
| 56 | 10.99.44.220/30 | 10.99.44.221 – 10.99.44.222 | 10.99.44.223 |
| 57 | 10.99.44.224/30 | 10.99.44.225 – 10.99.44.226 | 10.99.44.227 |
| 58 | 10.99.44.228/30 | 10.99.44.229 – 10.99.44.230 | 10.99.44.231 |
| 59 | 10.99.44.232/30 | 10.99.44.233 – 10.99.44.234 | 10.99.44.235 |
| 60 | 10.99.44.236/30 | 10.99.44.237 – 10.99.44.238 | 10.99.44.239 |
| 61 | 10.99.44.240/30 | 10.99.44.241 – 10.99.44.242 | 10.99.44.243 |
| 62 | 10.99.44.244/30 | 10.99.44.245 – 10.99.44.246 | 10.99.44.247 |
| 63 | 10.99.44.248/30 | 10.99.44.249 – 10.99.44.250 | 10.99.44.251 |
| 64 | 10.99.44.252/30 | 10.99.44.253 – 10.99.44.254 | 10.99.44.255 |
| 65 | 10.99.45.0/30 | 10.99.45.1 – 10.99.45.2 | 10.99.45.3 |
| 66 | 10.99.45.4/30 | 10.99.45.5 – 10.99.45.6 | 10.99.45.7 |
| 67 | 10.99.45.8/30 | 10.99.45.9 – 10.99.45.10 | 10.99.45.11 |
| 68 | 10.99.45.12/30 | 10.99.45.13 – 10.99.45.14 | 10.99.45.15 |
| 69 | 10.99.45.16/30 | 10.99.45.17 – 10.99.45.18 | 10.99.45.19 |
| 70 | 10.99.45.20/30 | 10.99.45.21 – 10.99.45.22 | 10.99.45.23 |
| 71 | 10.99.45.24/30 | 10.99.45.25 – 10.99.45.26 | 10.99.45.27 |
| 72 | 10.99.45.28/30 | 10.99.45.29 – 10.99.45.30 | 10.99.45.31 |
| 73 | 10.99.45.32/30 | 10.99.45.33 – 10.99.45.34 | 10.99.45.35 |
| 74 | 10.99.45.36/30 | 10.99.45.37 – 10.99.45.38 | 10.99.45.39 |
| 75 | 10.99.45.40/30 | 10.99.45.41 – 10.99.45.42 | 10.99.45.43 |
| 76 | 10.99.45.44/30 | 10.99.45.45 – 10.99.45.46 | 10.99.45.47 |
| 77 | 10.99.45.48/30 | 10.99.45.49 – 10.99.45.50 | 10.99.45.51 |
| 78 | 10.99.45.52/30 | 10.99.45.53 – 10.99.45.54 | 10.99.45.55 |
| 79 | 10.99.45.56/30 | 10.99.45.57 – 10.99.45.58 | 10.99.45.59 |
| 80 | 10.99.45.60/30 | 10.99.45.61 – 10.99.45.62 | 10.99.45.63 |
| 81 | 10.99.45.64/30 | 10.99.45.65 – 10.99.45.66 | 10.99.45.67 |
| 82 | 10.99.45.68/30 | 10.99.45.69 – 10.99.45.70 | 10.99.45.71 |
| 83 | 10.99.45.72/30 | 10.99.45.73 – 10.99.45.74 | 10.99.45.75 |
| 84 | 10.99.45.76/30 | 10.99.45.77 – 10.99.45.78 | 10.99.45.79 |
| 85 | 10.99.45.80/30 | 10.99.45.81 – 10.99.45.82 | 10.99.45.83 |
| 86 | 10.99.45.84/30 | 10.99.45.85 – 10.99.45.86 | 10.99.45.87 |
| 87 | 10.99.45.88/30 | 10.99.45.89 – 10.99.45.90 | 10.99.45.91 |
| 88 | 10.99.45.92/30 | 10.99.45.93 – 10.99.45.94 | 10.99.45.95 |
| 89 | 10.99.45.96/30 | 10.99.45.97 – 10.99.45.98 | 10.99.45.99 |
| 90 | 10.99.45.100/30 | 10.99.45.101 – 10.99.45.102 | 10.99.45.103 |
| 91 | 10.99.45.104/30 | 10.99.45.105 – 10.99.45.106 | 10.99.45.107 |
| 92 | 10.99.45.108/30 | 10.99.45.109 – 10.99.45.110 | 10.99.45.111 |
| 93 | 10.99.45.112/30 | 10.99.45.113 – 10.99.45.114 | 10.99.45.115 |
| 94 | 10.99.45.116/30 | 10.99.45.117 – 10.99.45.118 | 10.99.45.119 |
| 95 | 10.99.45.120/30 | 10.99.45.121 – 10.99.45.122 | 10.99.45.123 |
| 96 | 10.99.45.124/30 | 10.99.45.125 – 10.99.45.126 | 10.99.45.127 |
| 97 | 10.99.45.128/30 | 10.99.45.129 – 10.99.45.130 | 10.99.45.131 |
| 98 | 10.99.45.132/30 | 10.99.45.133 – 10.99.45.134 | 10.99.45.135 |
| 99 | 10.99.45.136/30 | 10.99.45.137 – 10.99.45.138 | 10.99.45.139 |
| 100 | 10.99.45.140/30 | 10.99.45.141 – 10.99.45.142 | 10.99.45.143 |
| 101 | 10.99.45.144/30 | 10.99.45.145 – 10.99.45.146 | 10.99.45.147 |
| 102 | 10.99.45.148/30 | 10.99.45.149 – 10.99.45.150 | 10.99.45.151 |
| 103 | 10.99.45.152/30 | 10.99.45.153 – 10.99.45.154 | 10.99.45.155 |
| 104 | 10.99.45.156/30 | 10.99.45.157 – 10.99.45.158 | 10.99.45.159 |
| 105 | 10.99.45.160/30 | 10.99.45.161 – 10.99.45.162 | 10.99.45.163 |
| 106 | 10.99.45.164/30 | 10.99.45.165 – 10.99.45.166 | 10.99.45.167 |
| 107 | 10.99.45.168/30 | 10.99.45.169 – 10.99.45.170 | 10.99.45.171 |
| 108 | 10.99.45.172/30 | 10.99.45.173 – 10.99.45.174 | 10.99.45.175 |
| 109 | 10.99.45.176/30 | 10.99.45.177 – 10.99.45.178 | 10.99.45.179 |
| 110 | 10.99.45.180/30 | 10.99.45.181 – 10.99.45.182 | 10.99.45.183 |
| 111 | 10.99.45.184/30 | 10.99.45.185 – 10.99.45.186 | 10.99.45.187 |
| 112 | 10.99.45.188/30 | 10.99.45.189 – 10.99.45.190 | 10.99.45.191 |
| 113 | 10.99.45.192/30 | 10.99.45.193 – 10.99.45.194 | 10.99.45.195 |
| 114 | 10.99.45.196/30 | 10.99.45.197 – 10.99.45.198 | 10.99.45.199 |
| 115 | 10.99.45.200/30 | 10.99.45.201 – 10.99.45.202 | 10.99.45.203 |
| 116 | 10.99.45.204/30 | 10.99.45.205 – 10.99.45.206 | 10.99.45.207 |
| 117 | 10.99.45.208/30 | 10.99.45.209 – 10.99.45.210 | 10.99.45.211 |
| 118 | 10.99.45.212/30 | 10.99.45.213 – 10.99.45.214 | 10.99.45.215 |
| 119 | 10.99.45.216/30 | 10.99.45.217 – 10.99.45.218 | 10.99.45.219 |
| 120 | 10.99.45.220/30 | 10.99.45.221 – 10.99.45.222 | 10.99.45.223 |
| 121 | 10.99.45.224/30 | 10.99.45.225 – 10.99.45.226 | 10.99.45.227 |
| 122 | 10.99.45.228/30 | 10.99.45.229 – 10.99.45.230 | 10.99.45.231 |
| 123 | 10.99.45.232/30 | 10.99.45.233 – 10.99.45.234 | 10.99.45.235 |
| 124 | 10.99.45.236/30 | 10.99.45.237 – 10.99.45.238 | 10.99.45.239 |
| 125 | 10.99.45.240/30 | 10.99.45.241 – 10.99.45.242 | 10.99.45.243 |
| 126 | 10.99.45.244/30 | 10.99.45.245 – 10.99.45.246 | 10.99.45.247 |
| 127 | 10.99.45.248/30 | 10.99.45.249 – 10.99.45.250 | 10.99.45.251 |
| 128 | 10.99.45.252/30 | 10.99.45.253 – 10.99.45.254 | 10.99.45.255 |
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.