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)10.0.80.0/23
network10.0.80.0/23
broadcast10.0.81.255
first host10.0.80.1
last host10.0.81.254
subnet mask255.255.254.0
wildcard0.0.1.255
addresses512
usable hosts510
classA
ipcalc 10.0.80.0/23
address00001010.00000000.01010000.00000000
subnet mask11111111.11111111.11111110.00000000
network00001010.00000000.01010000.00000000
broadcast00001010.00000000.01010001.11111111
green = network part, grey = host part
hex0x0a005000
decimal167792640
reverse dns0.80.0.10.in-addr.arpa
ipv4-mapped::ffff:a00:5000
/23 split into /31 · 256 subnets
close ×| # | network | host range | broadcast |
|---|---|---|---|
| 1 | 10.0.80.0/31 | 10.0.80.0 – 10.0.80.1 | 10.0.80.1 |
| 2 | 10.0.80.2/31 | 10.0.80.2 – 10.0.80.3 | 10.0.80.3 |
| 3 | 10.0.80.4/31 | 10.0.80.4 – 10.0.80.5 | 10.0.80.5 |
| 4 | 10.0.80.6/31 | 10.0.80.6 – 10.0.80.7 | 10.0.80.7 |
| 5 | 10.0.80.8/31 | 10.0.80.8 – 10.0.80.9 | 10.0.80.9 |
| 6 | 10.0.80.10/31 | 10.0.80.10 – 10.0.80.11 | 10.0.80.11 |
| 7 | 10.0.80.12/31 | 10.0.80.12 – 10.0.80.13 | 10.0.80.13 |
| 8 | 10.0.80.14/31 | 10.0.80.14 – 10.0.80.15 | 10.0.80.15 |
| 9 | 10.0.80.16/31 | 10.0.80.16 – 10.0.80.17 | 10.0.80.17 |
| 10 | 10.0.80.18/31 | 10.0.80.18 – 10.0.80.19 | 10.0.80.19 |
| 11 | 10.0.80.20/31 | 10.0.80.20 – 10.0.80.21 | 10.0.80.21 |
| 12 | 10.0.80.22/31 | 10.0.80.22 – 10.0.80.23 | 10.0.80.23 |
| 13 | 10.0.80.24/31 | 10.0.80.24 – 10.0.80.25 | 10.0.80.25 |
| 14 | 10.0.80.26/31 | 10.0.80.26 – 10.0.80.27 | 10.0.80.27 |
| 15 | 10.0.80.28/31 | 10.0.80.28 – 10.0.80.29 | 10.0.80.29 |
| 16 | 10.0.80.30/31 | 10.0.80.30 – 10.0.80.31 | 10.0.80.31 |
| 17 | 10.0.80.32/31 | 10.0.80.32 – 10.0.80.33 | 10.0.80.33 |
| 18 | 10.0.80.34/31 | 10.0.80.34 – 10.0.80.35 | 10.0.80.35 |
| 19 | 10.0.80.36/31 | 10.0.80.36 – 10.0.80.37 | 10.0.80.37 |
| 20 | 10.0.80.38/31 | 10.0.80.38 – 10.0.80.39 | 10.0.80.39 |
| 21 | 10.0.80.40/31 | 10.0.80.40 – 10.0.80.41 | 10.0.80.41 |
| 22 | 10.0.80.42/31 | 10.0.80.42 – 10.0.80.43 | 10.0.80.43 |
| 23 | 10.0.80.44/31 | 10.0.80.44 – 10.0.80.45 | 10.0.80.45 |
| 24 | 10.0.80.46/31 | 10.0.80.46 – 10.0.80.47 | 10.0.80.47 |
| 25 | 10.0.80.48/31 | 10.0.80.48 – 10.0.80.49 | 10.0.80.49 |
| 26 | 10.0.80.50/31 | 10.0.80.50 – 10.0.80.51 | 10.0.80.51 |
| 27 | 10.0.80.52/31 | 10.0.80.52 – 10.0.80.53 | 10.0.80.53 |
| 28 | 10.0.80.54/31 | 10.0.80.54 – 10.0.80.55 | 10.0.80.55 |
| 29 | 10.0.80.56/31 | 10.0.80.56 – 10.0.80.57 | 10.0.80.57 |
| 30 | 10.0.80.58/31 | 10.0.80.58 – 10.0.80.59 | 10.0.80.59 |
| 31 | 10.0.80.60/31 | 10.0.80.60 – 10.0.80.61 | 10.0.80.61 |
| 32 | 10.0.80.62/31 | 10.0.80.62 – 10.0.80.63 | 10.0.80.63 |
| 33 | 10.0.80.64/31 | 10.0.80.64 – 10.0.80.65 | 10.0.80.65 |
| 34 | 10.0.80.66/31 | 10.0.80.66 – 10.0.80.67 | 10.0.80.67 |
| 35 | 10.0.80.68/31 | 10.0.80.68 – 10.0.80.69 | 10.0.80.69 |
| 36 | 10.0.80.70/31 | 10.0.80.70 – 10.0.80.71 | 10.0.80.71 |
| 37 | 10.0.80.72/31 | 10.0.80.72 – 10.0.80.73 | 10.0.80.73 |
| 38 | 10.0.80.74/31 | 10.0.80.74 – 10.0.80.75 | 10.0.80.75 |
| 39 | 10.0.80.76/31 | 10.0.80.76 – 10.0.80.77 | 10.0.80.77 |
| 40 | 10.0.80.78/31 | 10.0.80.78 – 10.0.80.79 | 10.0.80.79 |
| 41 | 10.0.80.80/31 | 10.0.80.80 – 10.0.80.81 | 10.0.80.81 |
| 42 | 10.0.80.82/31 | 10.0.80.82 – 10.0.80.83 | 10.0.80.83 |
| 43 | 10.0.80.84/31 | 10.0.80.84 – 10.0.80.85 | 10.0.80.85 |
| 44 | 10.0.80.86/31 | 10.0.80.86 – 10.0.80.87 | 10.0.80.87 |
| 45 | 10.0.80.88/31 | 10.0.80.88 – 10.0.80.89 | 10.0.80.89 |
| 46 | 10.0.80.90/31 | 10.0.80.90 – 10.0.80.91 | 10.0.80.91 |
| 47 | 10.0.80.92/31 | 10.0.80.92 – 10.0.80.93 | 10.0.80.93 |
| 48 | 10.0.80.94/31 | 10.0.80.94 – 10.0.80.95 | 10.0.80.95 |
| 49 | 10.0.80.96/31 | 10.0.80.96 – 10.0.80.97 | 10.0.80.97 |
| 50 | 10.0.80.98/31 | 10.0.80.98 – 10.0.80.99 | 10.0.80.99 |
| 51 | 10.0.80.100/31 | 10.0.80.100 – 10.0.80.101 | 10.0.80.101 |
| 52 | 10.0.80.102/31 | 10.0.80.102 – 10.0.80.103 | 10.0.80.103 |
| 53 | 10.0.80.104/31 | 10.0.80.104 – 10.0.80.105 | 10.0.80.105 |
| 54 | 10.0.80.106/31 | 10.0.80.106 – 10.0.80.107 | 10.0.80.107 |
| 55 | 10.0.80.108/31 | 10.0.80.108 – 10.0.80.109 | 10.0.80.109 |
| 56 | 10.0.80.110/31 | 10.0.80.110 – 10.0.80.111 | 10.0.80.111 |
| 57 | 10.0.80.112/31 | 10.0.80.112 – 10.0.80.113 | 10.0.80.113 |
| 58 | 10.0.80.114/31 | 10.0.80.114 – 10.0.80.115 | 10.0.80.115 |
| 59 | 10.0.80.116/31 | 10.0.80.116 – 10.0.80.117 | 10.0.80.117 |
| 60 | 10.0.80.118/31 | 10.0.80.118 – 10.0.80.119 | 10.0.80.119 |
| 61 | 10.0.80.120/31 | 10.0.80.120 – 10.0.80.121 | 10.0.80.121 |
| 62 | 10.0.80.122/31 | 10.0.80.122 – 10.0.80.123 | 10.0.80.123 |
| 63 | 10.0.80.124/31 | 10.0.80.124 – 10.0.80.125 | 10.0.80.125 |
| 64 | 10.0.80.126/31 | 10.0.80.126 – 10.0.80.127 | 10.0.80.127 |
| 65 | 10.0.80.128/31 | 10.0.80.128 – 10.0.80.129 | 10.0.80.129 |
| 66 | 10.0.80.130/31 | 10.0.80.130 – 10.0.80.131 | 10.0.80.131 |
| 67 | 10.0.80.132/31 | 10.0.80.132 – 10.0.80.133 | 10.0.80.133 |
| 68 | 10.0.80.134/31 | 10.0.80.134 – 10.0.80.135 | 10.0.80.135 |
| 69 | 10.0.80.136/31 | 10.0.80.136 – 10.0.80.137 | 10.0.80.137 |
| 70 | 10.0.80.138/31 | 10.0.80.138 – 10.0.80.139 | 10.0.80.139 |
| 71 | 10.0.80.140/31 | 10.0.80.140 – 10.0.80.141 | 10.0.80.141 |
| 72 | 10.0.80.142/31 | 10.0.80.142 – 10.0.80.143 | 10.0.80.143 |
| 73 | 10.0.80.144/31 | 10.0.80.144 – 10.0.80.145 | 10.0.80.145 |
| 74 | 10.0.80.146/31 | 10.0.80.146 – 10.0.80.147 | 10.0.80.147 |
| 75 | 10.0.80.148/31 | 10.0.80.148 – 10.0.80.149 | 10.0.80.149 |
| 76 | 10.0.80.150/31 | 10.0.80.150 – 10.0.80.151 | 10.0.80.151 |
| 77 | 10.0.80.152/31 | 10.0.80.152 – 10.0.80.153 | 10.0.80.153 |
| 78 | 10.0.80.154/31 | 10.0.80.154 – 10.0.80.155 | 10.0.80.155 |
| 79 | 10.0.80.156/31 | 10.0.80.156 – 10.0.80.157 | 10.0.80.157 |
| 80 | 10.0.80.158/31 | 10.0.80.158 – 10.0.80.159 | 10.0.80.159 |
| 81 | 10.0.80.160/31 | 10.0.80.160 – 10.0.80.161 | 10.0.80.161 |
| 82 | 10.0.80.162/31 | 10.0.80.162 – 10.0.80.163 | 10.0.80.163 |
| 83 | 10.0.80.164/31 | 10.0.80.164 – 10.0.80.165 | 10.0.80.165 |
| 84 | 10.0.80.166/31 | 10.0.80.166 – 10.0.80.167 | 10.0.80.167 |
| 85 | 10.0.80.168/31 | 10.0.80.168 – 10.0.80.169 | 10.0.80.169 |
| 86 | 10.0.80.170/31 | 10.0.80.170 – 10.0.80.171 | 10.0.80.171 |
| 87 | 10.0.80.172/31 | 10.0.80.172 – 10.0.80.173 | 10.0.80.173 |
| 88 | 10.0.80.174/31 | 10.0.80.174 – 10.0.80.175 | 10.0.80.175 |
| 89 | 10.0.80.176/31 | 10.0.80.176 – 10.0.80.177 | 10.0.80.177 |
| 90 | 10.0.80.178/31 | 10.0.80.178 – 10.0.80.179 | 10.0.80.179 |
| 91 | 10.0.80.180/31 | 10.0.80.180 – 10.0.80.181 | 10.0.80.181 |
| 92 | 10.0.80.182/31 | 10.0.80.182 – 10.0.80.183 | 10.0.80.183 |
| 93 | 10.0.80.184/31 | 10.0.80.184 – 10.0.80.185 | 10.0.80.185 |
| 94 | 10.0.80.186/31 | 10.0.80.186 – 10.0.80.187 | 10.0.80.187 |
| 95 | 10.0.80.188/31 | 10.0.80.188 – 10.0.80.189 | 10.0.80.189 |
| 96 | 10.0.80.190/31 | 10.0.80.190 – 10.0.80.191 | 10.0.80.191 |
| 97 | 10.0.80.192/31 | 10.0.80.192 – 10.0.80.193 | 10.0.80.193 |
| 98 | 10.0.80.194/31 | 10.0.80.194 – 10.0.80.195 | 10.0.80.195 |
| 99 | 10.0.80.196/31 | 10.0.80.196 – 10.0.80.197 | 10.0.80.197 |
| 100 | 10.0.80.198/31 | 10.0.80.198 – 10.0.80.199 | 10.0.80.199 |
| 101 | 10.0.80.200/31 | 10.0.80.200 – 10.0.80.201 | 10.0.80.201 |
| 102 | 10.0.80.202/31 | 10.0.80.202 – 10.0.80.203 | 10.0.80.203 |
| 103 | 10.0.80.204/31 | 10.0.80.204 – 10.0.80.205 | 10.0.80.205 |
| 104 | 10.0.80.206/31 | 10.0.80.206 – 10.0.80.207 | 10.0.80.207 |
| 105 | 10.0.80.208/31 | 10.0.80.208 – 10.0.80.209 | 10.0.80.209 |
| 106 | 10.0.80.210/31 | 10.0.80.210 – 10.0.80.211 | 10.0.80.211 |
| 107 | 10.0.80.212/31 | 10.0.80.212 – 10.0.80.213 | 10.0.80.213 |
| 108 | 10.0.80.214/31 | 10.0.80.214 – 10.0.80.215 | 10.0.80.215 |
| 109 | 10.0.80.216/31 | 10.0.80.216 – 10.0.80.217 | 10.0.80.217 |
| 110 | 10.0.80.218/31 | 10.0.80.218 – 10.0.80.219 | 10.0.80.219 |
| 111 | 10.0.80.220/31 | 10.0.80.220 – 10.0.80.221 | 10.0.80.221 |
| 112 | 10.0.80.222/31 | 10.0.80.222 – 10.0.80.223 | 10.0.80.223 |
| 113 | 10.0.80.224/31 | 10.0.80.224 – 10.0.80.225 | 10.0.80.225 |
| 114 | 10.0.80.226/31 | 10.0.80.226 – 10.0.80.227 | 10.0.80.227 |
| 115 | 10.0.80.228/31 | 10.0.80.228 – 10.0.80.229 | 10.0.80.229 |
| 116 | 10.0.80.230/31 | 10.0.80.230 – 10.0.80.231 | 10.0.80.231 |
| 117 | 10.0.80.232/31 | 10.0.80.232 – 10.0.80.233 | 10.0.80.233 |
| 118 | 10.0.80.234/31 | 10.0.80.234 – 10.0.80.235 | 10.0.80.235 |
| 119 | 10.0.80.236/31 | 10.0.80.236 – 10.0.80.237 | 10.0.80.237 |
| 120 | 10.0.80.238/31 | 10.0.80.238 – 10.0.80.239 | 10.0.80.239 |
| 121 | 10.0.80.240/31 | 10.0.80.240 – 10.0.80.241 | 10.0.80.241 |
| 122 | 10.0.80.242/31 | 10.0.80.242 – 10.0.80.243 | 10.0.80.243 |
| 123 | 10.0.80.244/31 | 10.0.80.244 – 10.0.80.245 | 10.0.80.245 |
| 124 | 10.0.80.246/31 | 10.0.80.246 – 10.0.80.247 | 10.0.80.247 |
| 125 | 10.0.80.248/31 | 10.0.80.248 – 10.0.80.249 | 10.0.80.249 |
| 126 | 10.0.80.250/31 | 10.0.80.250 – 10.0.80.251 | 10.0.80.251 |
| 127 | 10.0.80.252/31 | 10.0.80.252 – 10.0.80.253 | 10.0.80.253 |
| 128 | 10.0.80.254/31 | 10.0.80.254 – 10.0.80.255 | 10.0.80.255 |
| 129 | 10.0.81.0/31 | 10.0.81.0 – 10.0.81.1 | 10.0.81.1 |
| 130 | 10.0.81.2/31 | 10.0.81.2 – 10.0.81.3 | 10.0.81.3 |
| 131 | 10.0.81.4/31 | 10.0.81.4 – 10.0.81.5 | 10.0.81.5 |
| 132 | 10.0.81.6/31 | 10.0.81.6 – 10.0.81.7 | 10.0.81.7 |
| 133 | 10.0.81.8/31 | 10.0.81.8 – 10.0.81.9 | 10.0.81.9 |
| 134 | 10.0.81.10/31 | 10.0.81.10 – 10.0.81.11 | 10.0.81.11 |
| 135 | 10.0.81.12/31 | 10.0.81.12 – 10.0.81.13 | 10.0.81.13 |
| 136 | 10.0.81.14/31 | 10.0.81.14 – 10.0.81.15 | 10.0.81.15 |
| 137 | 10.0.81.16/31 | 10.0.81.16 – 10.0.81.17 | 10.0.81.17 |
| 138 | 10.0.81.18/31 | 10.0.81.18 – 10.0.81.19 | 10.0.81.19 |
| 139 | 10.0.81.20/31 | 10.0.81.20 – 10.0.81.21 | 10.0.81.21 |
| 140 | 10.0.81.22/31 | 10.0.81.22 – 10.0.81.23 | 10.0.81.23 |
| 141 | 10.0.81.24/31 | 10.0.81.24 – 10.0.81.25 | 10.0.81.25 |
| 142 | 10.0.81.26/31 | 10.0.81.26 – 10.0.81.27 | 10.0.81.27 |
| 143 | 10.0.81.28/31 | 10.0.81.28 – 10.0.81.29 | 10.0.81.29 |
| 144 | 10.0.81.30/31 | 10.0.81.30 – 10.0.81.31 | 10.0.81.31 |
| 145 | 10.0.81.32/31 | 10.0.81.32 – 10.0.81.33 | 10.0.81.33 |
| 146 | 10.0.81.34/31 | 10.0.81.34 – 10.0.81.35 | 10.0.81.35 |
| 147 | 10.0.81.36/31 | 10.0.81.36 – 10.0.81.37 | 10.0.81.37 |
| 148 | 10.0.81.38/31 | 10.0.81.38 – 10.0.81.39 | 10.0.81.39 |
| 149 | 10.0.81.40/31 | 10.0.81.40 – 10.0.81.41 | 10.0.81.41 |
| 150 | 10.0.81.42/31 | 10.0.81.42 – 10.0.81.43 | 10.0.81.43 |
| 151 | 10.0.81.44/31 | 10.0.81.44 – 10.0.81.45 | 10.0.81.45 |
| 152 | 10.0.81.46/31 | 10.0.81.46 – 10.0.81.47 | 10.0.81.47 |
| 153 | 10.0.81.48/31 | 10.0.81.48 – 10.0.81.49 | 10.0.81.49 |
| 154 | 10.0.81.50/31 | 10.0.81.50 – 10.0.81.51 | 10.0.81.51 |
| 155 | 10.0.81.52/31 | 10.0.81.52 – 10.0.81.53 | 10.0.81.53 |
| 156 | 10.0.81.54/31 | 10.0.81.54 – 10.0.81.55 | 10.0.81.55 |
| 157 | 10.0.81.56/31 | 10.0.81.56 – 10.0.81.57 | 10.0.81.57 |
| 158 | 10.0.81.58/31 | 10.0.81.58 – 10.0.81.59 | 10.0.81.59 |
| 159 | 10.0.81.60/31 | 10.0.81.60 – 10.0.81.61 | 10.0.81.61 |
| 160 | 10.0.81.62/31 | 10.0.81.62 – 10.0.81.63 | 10.0.81.63 |
| 161 | 10.0.81.64/31 | 10.0.81.64 – 10.0.81.65 | 10.0.81.65 |
| 162 | 10.0.81.66/31 | 10.0.81.66 – 10.0.81.67 | 10.0.81.67 |
| 163 | 10.0.81.68/31 | 10.0.81.68 – 10.0.81.69 | 10.0.81.69 |
| 164 | 10.0.81.70/31 | 10.0.81.70 – 10.0.81.71 | 10.0.81.71 |
| 165 | 10.0.81.72/31 | 10.0.81.72 – 10.0.81.73 | 10.0.81.73 |
| 166 | 10.0.81.74/31 | 10.0.81.74 – 10.0.81.75 | 10.0.81.75 |
| 167 | 10.0.81.76/31 | 10.0.81.76 – 10.0.81.77 | 10.0.81.77 |
| 168 | 10.0.81.78/31 | 10.0.81.78 – 10.0.81.79 | 10.0.81.79 |
| 169 | 10.0.81.80/31 | 10.0.81.80 – 10.0.81.81 | 10.0.81.81 |
| 170 | 10.0.81.82/31 | 10.0.81.82 – 10.0.81.83 | 10.0.81.83 |
| 171 | 10.0.81.84/31 | 10.0.81.84 – 10.0.81.85 | 10.0.81.85 |
| 172 | 10.0.81.86/31 | 10.0.81.86 – 10.0.81.87 | 10.0.81.87 |
| 173 | 10.0.81.88/31 | 10.0.81.88 – 10.0.81.89 | 10.0.81.89 |
| 174 | 10.0.81.90/31 | 10.0.81.90 – 10.0.81.91 | 10.0.81.91 |
| 175 | 10.0.81.92/31 | 10.0.81.92 – 10.0.81.93 | 10.0.81.93 |
| 176 | 10.0.81.94/31 | 10.0.81.94 – 10.0.81.95 | 10.0.81.95 |
| 177 | 10.0.81.96/31 | 10.0.81.96 – 10.0.81.97 | 10.0.81.97 |
| 178 | 10.0.81.98/31 | 10.0.81.98 – 10.0.81.99 | 10.0.81.99 |
| 179 | 10.0.81.100/31 | 10.0.81.100 – 10.0.81.101 | 10.0.81.101 |
| 180 | 10.0.81.102/31 | 10.0.81.102 – 10.0.81.103 | 10.0.81.103 |
| 181 | 10.0.81.104/31 | 10.0.81.104 – 10.0.81.105 | 10.0.81.105 |
| 182 | 10.0.81.106/31 | 10.0.81.106 – 10.0.81.107 | 10.0.81.107 |
| 183 | 10.0.81.108/31 | 10.0.81.108 – 10.0.81.109 | 10.0.81.109 |
| 184 | 10.0.81.110/31 | 10.0.81.110 – 10.0.81.111 | 10.0.81.111 |
| 185 | 10.0.81.112/31 | 10.0.81.112 – 10.0.81.113 | 10.0.81.113 |
| 186 | 10.0.81.114/31 | 10.0.81.114 – 10.0.81.115 | 10.0.81.115 |
| 187 | 10.0.81.116/31 | 10.0.81.116 – 10.0.81.117 | 10.0.81.117 |
| 188 | 10.0.81.118/31 | 10.0.81.118 – 10.0.81.119 | 10.0.81.119 |
| 189 | 10.0.81.120/31 | 10.0.81.120 – 10.0.81.121 | 10.0.81.121 |
| 190 | 10.0.81.122/31 | 10.0.81.122 – 10.0.81.123 | 10.0.81.123 |
| 191 | 10.0.81.124/31 | 10.0.81.124 – 10.0.81.125 | 10.0.81.125 |
| 192 | 10.0.81.126/31 | 10.0.81.126 – 10.0.81.127 | 10.0.81.127 |
| 193 | 10.0.81.128/31 | 10.0.81.128 – 10.0.81.129 | 10.0.81.129 |
| 194 | 10.0.81.130/31 | 10.0.81.130 – 10.0.81.131 | 10.0.81.131 |
| 195 | 10.0.81.132/31 | 10.0.81.132 – 10.0.81.133 | 10.0.81.133 |
| 196 | 10.0.81.134/31 | 10.0.81.134 – 10.0.81.135 | 10.0.81.135 |
| 197 | 10.0.81.136/31 | 10.0.81.136 – 10.0.81.137 | 10.0.81.137 |
| 198 | 10.0.81.138/31 | 10.0.81.138 – 10.0.81.139 | 10.0.81.139 |
| 199 | 10.0.81.140/31 | 10.0.81.140 – 10.0.81.141 | 10.0.81.141 |
| 200 | 10.0.81.142/31 | 10.0.81.142 – 10.0.81.143 | 10.0.81.143 |
| 201 | 10.0.81.144/31 | 10.0.81.144 – 10.0.81.145 | 10.0.81.145 |
| 202 | 10.0.81.146/31 | 10.0.81.146 – 10.0.81.147 | 10.0.81.147 |
| 203 | 10.0.81.148/31 | 10.0.81.148 – 10.0.81.149 | 10.0.81.149 |
| 204 | 10.0.81.150/31 | 10.0.81.150 – 10.0.81.151 | 10.0.81.151 |
| 205 | 10.0.81.152/31 | 10.0.81.152 – 10.0.81.153 | 10.0.81.153 |
| 206 | 10.0.81.154/31 | 10.0.81.154 – 10.0.81.155 | 10.0.81.155 |
| 207 | 10.0.81.156/31 | 10.0.81.156 – 10.0.81.157 | 10.0.81.157 |
| 208 | 10.0.81.158/31 | 10.0.81.158 – 10.0.81.159 | 10.0.81.159 |
| 209 | 10.0.81.160/31 | 10.0.81.160 – 10.0.81.161 | 10.0.81.161 |
| 210 | 10.0.81.162/31 | 10.0.81.162 – 10.0.81.163 | 10.0.81.163 |
| 211 | 10.0.81.164/31 | 10.0.81.164 – 10.0.81.165 | 10.0.81.165 |
| 212 | 10.0.81.166/31 | 10.0.81.166 – 10.0.81.167 | 10.0.81.167 |
| 213 | 10.0.81.168/31 | 10.0.81.168 – 10.0.81.169 | 10.0.81.169 |
| 214 | 10.0.81.170/31 | 10.0.81.170 – 10.0.81.171 | 10.0.81.171 |
| 215 | 10.0.81.172/31 | 10.0.81.172 – 10.0.81.173 | 10.0.81.173 |
| 216 | 10.0.81.174/31 | 10.0.81.174 – 10.0.81.175 | 10.0.81.175 |
| 217 | 10.0.81.176/31 | 10.0.81.176 – 10.0.81.177 | 10.0.81.177 |
| 218 | 10.0.81.178/31 | 10.0.81.178 – 10.0.81.179 | 10.0.81.179 |
| 219 | 10.0.81.180/31 | 10.0.81.180 – 10.0.81.181 | 10.0.81.181 |
| 220 | 10.0.81.182/31 | 10.0.81.182 – 10.0.81.183 | 10.0.81.183 |
| 221 | 10.0.81.184/31 | 10.0.81.184 – 10.0.81.185 | 10.0.81.185 |
| 222 | 10.0.81.186/31 | 10.0.81.186 – 10.0.81.187 | 10.0.81.187 |
| 223 | 10.0.81.188/31 | 10.0.81.188 – 10.0.81.189 | 10.0.81.189 |
| 224 | 10.0.81.190/31 | 10.0.81.190 – 10.0.81.191 | 10.0.81.191 |
| 225 | 10.0.81.192/31 | 10.0.81.192 – 10.0.81.193 | 10.0.81.193 |
| 226 | 10.0.81.194/31 | 10.0.81.194 – 10.0.81.195 | 10.0.81.195 |
| 227 | 10.0.81.196/31 | 10.0.81.196 – 10.0.81.197 | 10.0.81.197 |
| 228 | 10.0.81.198/31 | 10.0.81.198 – 10.0.81.199 | 10.0.81.199 |
| 229 | 10.0.81.200/31 | 10.0.81.200 – 10.0.81.201 | 10.0.81.201 |
| 230 | 10.0.81.202/31 | 10.0.81.202 – 10.0.81.203 | 10.0.81.203 |
| 231 | 10.0.81.204/31 | 10.0.81.204 – 10.0.81.205 | 10.0.81.205 |
| 232 | 10.0.81.206/31 | 10.0.81.206 – 10.0.81.207 | 10.0.81.207 |
| 233 | 10.0.81.208/31 | 10.0.81.208 – 10.0.81.209 | 10.0.81.209 |
| 234 | 10.0.81.210/31 | 10.0.81.210 – 10.0.81.211 | 10.0.81.211 |
| 235 | 10.0.81.212/31 | 10.0.81.212 – 10.0.81.213 | 10.0.81.213 |
| 236 | 10.0.81.214/31 | 10.0.81.214 – 10.0.81.215 | 10.0.81.215 |
| 237 | 10.0.81.216/31 | 10.0.81.216 – 10.0.81.217 | 10.0.81.217 |
| 238 | 10.0.81.218/31 | 10.0.81.218 – 10.0.81.219 | 10.0.81.219 |
| 239 | 10.0.81.220/31 | 10.0.81.220 – 10.0.81.221 | 10.0.81.221 |
| 240 | 10.0.81.222/31 | 10.0.81.222 – 10.0.81.223 | 10.0.81.223 |
| 241 | 10.0.81.224/31 | 10.0.81.224 – 10.0.81.225 | 10.0.81.225 |
| 242 | 10.0.81.226/31 | 10.0.81.226 – 10.0.81.227 | 10.0.81.227 |
| 243 | 10.0.81.228/31 | 10.0.81.228 – 10.0.81.229 | 10.0.81.229 |
| 244 | 10.0.81.230/31 | 10.0.81.230 – 10.0.81.231 | 10.0.81.231 |
| 245 | 10.0.81.232/31 | 10.0.81.232 – 10.0.81.233 | 10.0.81.233 |
| 246 | 10.0.81.234/31 | 10.0.81.234 – 10.0.81.235 | 10.0.81.235 |
| 247 | 10.0.81.236/31 | 10.0.81.236 – 10.0.81.237 | 10.0.81.237 |
| 248 | 10.0.81.238/31 | 10.0.81.238 – 10.0.81.239 | 10.0.81.239 |
| 249 | 10.0.81.240/31 | 10.0.81.240 – 10.0.81.241 | 10.0.81.241 |
| 250 | 10.0.81.242/31 | 10.0.81.242 – 10.0.81.243 | 10.0.81.243 |
| 251 | 10.0.81.244/31 | 10.0.81.244 – 10.0.81.245 | 10.0.81.245 |
| 252 | 10.0.81.246/31 | 10.0.81.246 – 10.0.81.247 | 10.0.81.247 |
| 253 | 10.0.81.248/31 | 10.0.81.248 – 10.0.81.249 | 10.0.81.249 |
| 254 | 10.0.81.250/31 | 10.0.81.250 – 10.0.81.251 | 10.0.81.251 |
| 255 | 10.0.81.252/31 | 10.0.81.252 – 10.0.81.253 | 10.0.81.253 |
| 256 | 10.0.81.254/31 | 10.0.81.254 – 10.0.81.255 | 10.0.81.255 |
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.