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)10.12.208.0/20
network10.12.208.0/20
broadcast10.12.223.255
first host10.12.208.1
last host10.12.223.254
subnet mask255.255.240.0
wildcard0.0.15.255
addresses4,096
usable hosts4,094
classA
ipcalc 10.12.208.0/20
address00001010.00001100.11010000.00000000
subnet mask11111111.11111111.11110000.00000000
network00001010.00001100.11010000.00000000
broadcast00001010.00001100.11011111.11111111
green = network part, grey = host part
hex0x0a0cd000
decimal168611840
reverse dns0.208.12.10.in-addr.arpa
ipv4-mapped::ffff:a0c:d000
/20 split into /30 · 1,024 subnets
close ×| # | network | host range | broadcast |
|---|---|---|---|
| 1 | 10.12.208.0/30 | 10.12.208.1 – 10.12.208.2 | 10.12.208.3 |
| 2 | 10.12.208.4/30 | 10.12.208.5 – 10.12.208.6 | 10.12.208.7 |
| 3 | 10.12.208.8/30 | 10.12.208.9 – 10.12.208.10 | 10.12.208.11 |
| 4 | 10.12.208.12/30 | 10.12.208.13 – 10.12.208.14 | 10.12.208.15 |
| 5 | 10.12.208.16/30 | 10.12.208.17 – 10.12.208.18 | 10.12.208.19 |
| 6 | 10.12.208.20/30 | 10.12.208.21 – 10.12.208.22 | 10.12.208.23 |
| 7 | 10.12.208.24/30 | 10.12.208.25 – 10.12.208.26 | 10.12.208.27 |
| 8 | 10.12.208.28/30 | 10.12.208.29 – 10.12.208.30 | 10.12.208.31 |
| 9 | 10.12.208.32/30 | 10.12.208.33 – 10.12.208.34 | 10.12.208.35 |
| 10 | 10.12.208.36/30 | 10.12.208.37 – 10.12.208.38 | 10.12.208.39 |
| 11 | 10.12.208.40/30 | 10.12.208.41 – 10.12.208.42 | 10.12.208.43 |
| 12 | 10.12.208.44/30 | 10.12.208.45 – 10.12.208.46 | 10.12.208.47 |
| 13 | 10.12.208.48/30 | 10.12.208.49 – 10.12.208.50 | 10.12.208.51 |
| 14 | 10.12.208.52/30 | 10.12.208.53 – 10.12.208.54 | 10.12.208.55 |
| 15 | 10.12.208.56/30 | 10.12.208.57 – 10.12.208.58 | 10.12.208.59 |
| 16 | 10.12.208.60/30 | 10.12.208.61 – 10.12.208.62 | 10.12.208.63 |
| 17 | 10.12.208.64/30 | 10.12.208.65 – 10.12.208.66 | 10.12.208.67 |
| 18 | 10.12.208.68/30 | 10.12.208.69 – 10.12.208.70 | 10.12.208.71 |
| 19 | 10.12.208.72/30 | 10.12.208.73 – 10.12.208.74 | 10.12.208.75 |
| 20 | 10.12.208.76/30 | 10.12.208.77 – 10.12.208.78 | 10.12.208.79 |
| 21 | 10.12.208.80/30 | 10.12.208.81 – 10.12.208.82 | 10.12.208.83 |
| 22 | 10.12.208.84/30 | 10.12.208.85 – 10.12.208.86 | 10.12.208.87 |
| 23 | 10.12.208.88/30 | 10.12.208.89 – 10.12.208.90 | 10.12.208.91 |
| 24 | 10.12.208.92/30 | 10.12.208.93 – 10.12.208.94 | 10.12.208.95 |
| 25 | 10.12.208.96/30 | 10.12.208.97 – 10.12.208.98 | 10.12.208.99 |
| 26 | 10.12.208.100/30 | 10.12.208.101 – 10.12.208.102 | 10.12.208.103 |
| 27 | 10.12.208.104/30 | 10.12.208.105 – 10.12.208.106 | 10.12.208.107 |
| 28 | 10.12.208.108/30 | 10.12.208.109 – 10.12.208.110 | 10.12.208.111 |
| 29 | 10.12.208.112/30 | 10.12.208.113 – 10.12.208.114 | 10.12.208.115 |
| 30 | 10.12.208.116/30 | 10.12.208.117 – 10.12.208.118 | 10.12.208.119 |
| 31 | 10.12.208.120/30 | 10.12.208.121 – 10.12.208.122 | 10.12.208.123 |
| 32 | 10.12.208.124/30 | 10.12.208.125 – 10.12.208.126 | 10.12.208.127 |
| 33 | 10.12.208.128/30 | 10.12.208.129 – 10.12.208.130 | 10.12.208.131 |
| 34 | 10.12.208.132/30 | 10.12.208.133 – 10.12.208.134 | 10.12.208.135 |
| 35 | 10.12.208.136/30 | 10.12.208.137 – 10.12.208.138 | 10.12.208.139 |
| 36 | 10.12.208.140/30 | 10.12.208.141 – 10.12.208.142 | 10.12.208.143 |
| 37 | 10.12.208.144/30 | 10.12.208.145 – 10.12.208.146 | 10.12.208.147 |
| 38 | 10.12.208.148/30 | 10.12.208.149 – 10.12.208.150 | 10.12.208.151 |
| 39 | 10.12.208.152/30 | 10.12.208.153 – 10.12.208.154 | 10.12.208.155 |
| 40 | 10.12.208.156/30 | 10.12.208.157 – 10.12.208.158 | 10.12.208.159 |
| 41 | 10.12.208.160/30 | 10.12.208.161 – 10.12.208.162 | 10.12.208.163 |
| 42 | 10.12.208.164/30 | 10.12.208.165 – 10.12.208.166 | 10.12.208.167 |
| 43 | 10.12.208.168/30 | 10.12.208.169 – 10.12.208.170 | 10.12.208.171 |
| 44 | 10.12.208.172/30 | 10.12.208.173 – 10.12.208.174 | 10.12.208.175 |
| 45 | 10.12.208.176/30 | 10.12.208.177 – 10.12.208.178 | 10.12.208.179 |
| 46 | 10.12.208.180/30 | 10.12.208.181 – 10.12.208.182 | 10.12.208.183 |
| 47 | 10.12.208.184/30 | 10.12.208.185 – 10.12.208.186 | 10.12.208.187 |
| 48 | 10.12.208.188/30 | 10.12.208.189 – 10.12.208.190 | 10.12.208.191 |
| 49 | 10.12.208.192/30 | 10.12.208.193 – 10.12.208.194 | 10.12.208.195 |
| 50 | 10.12.208.196/30 | 10.12.208.197 – 10.12.208.198 | 10.12.208.199 |
| 51 | 10.12.208.200/30 | 10.12.208.201 – 10.12.208.202 | 10.12.208.203 |
| 52 | 10.12.208.204/30 | 10.12.208.205 – 10.12.208.206 | 10.12.208.207 |
| 53 | 10.12.208.208/30 | 10.12.208.209 – 10.12.208.210 | 10.12.208.211 |
| 54 | 10.12.208.212/30 | 10.12.208.213 – 10.12.208.214 | 10.12.208.215 |
| 55 | 10.12.208.216/30 | 10.12.208.217 – 10.12.208.218 | 10.12.208.219 |
| 56 | 10.12.208.220/30 | 10.12.208.221 – 10.12.208.222 | 10.12.208.223 |
| 57 | 10.12.208.224/30 | 10.12.208.225 – 10.12.208.226 | 10.12.208.227 |
| 58 | 10.12.208.228/30 | 10.12.208.229 – 10.12.208.230 | 10.12.208.231 |
| 59 | 10.12.208.232/30 | 10.12.208.233 – 10.12.208.234 | 10.12.208.235 |
| 60 | 10.12.208.236/30 | 10.12.208.237 – 10.12.208.238 | 10.12.208.239 |
| 61 | 10.12.208.240/30 | 10.12.208.241 – 10.12.208.242 | 10.12.208.243 |
| 62 | 10.12.208.244/30 | 10.12.208.245 – 10.12.208.246 | 10.12.208.247 |
| 63 | 10.12.208.248/30 | 10.12.208.249 – 10.12.208.250 | 10.12.208.251 |
| 64 | 10.12.208.252/30 | 10.12.208.253 – 10.12.208.254 | 10.12.208.255 |
| 65 | 10.12.209.0/30 | 10.12.209.1 – 10.12.209.2 | 10.12.209.3 |
| 66 | 10.12.209.4/30 | 10.12.209.5 – 10.12.209.6 | 10.12.209.7 |
| 67 | 10.12.209.8/30 | 10.12.209.9 – 10.12.209.10 | 10.12.209.11 |
| 68 | 10.12.209.12/30 | 10.12.209.13 – 10.12.209.14 | 10.12.209.15 |
| 69 | 10.12.209.16/30 | 10.12.209.17 – 10.12.209.18 | 10.12.209.19 |
| 70 | 10.12.209.20/30 | 10.12.209.21 – 10.12.209.22 | 10.12.209.23 |
| 71 | 10.12.209.24/30 | 10.12.209.25 – 10.12.209.26 | 10.12.209.27 |
| 72 | 10.12.209.28/30 | 10.12.209.29 – 10.12.209.30 | 10.12.209.31 |
| 73 | 10.12.209.32/30 | 10.12.209.33 – 10.12.209.34 | 10.12.209.35 |
| 74 | 10.12.209.36/30 | 10.12.209.37 – 10.12.209.38 | 10.12.209.39 |
| 75 | 10.12.209.40/30 | 10.12.209.41 – 10.12.209.42 | 10.12.209.43 |
| 76 | 10.12.209.44/30 | 10.12.209.45 – 10.12.209.46 | 10.12.209.47 |
| 77 | 10.12.209.48/30 | 10.12.209.49 – 10.12.209.50 | 10.12.209.51 |
| 78 | 10.12.209.52/30 | 10.12.209.53 – 10.12.209.54 | 10.12.209.55 |
| 79 | 10.12.209.56/30 | 10.12.209.57 – 10.12.209.58 | 10.12.209.59 |
| 80 | 10.12.209.60/30 | 10.12.209.61 – 10.12.209.62 | 10.12.209.63 |
| 81 | 10.12.209.64/30 | 10.12.209.65 – 10.12.209.66 | 10.12.209.67 |
| 82 | 10.12.209.68/30 | 10.12.209.69 – 10.12.209.70 | 10.12.209.71 |
| 83 | 10.12.209.72/30 | 10.12.209.73 – 10.12.209.74 | 10.12.209.75 |
| 84 | 10.12.209.76/30 | 10.12.209.77 – 10.12.209.78 | 10.12.209.79 |
| 85 | 10.12.209.80/30 | 10.12.209.81 – 10.12.209.82 | 10.12.209.83 |
| 86 | 10.12.209.84/30 | 10.12.209.85 – 10.12.209.86 | 10.12.209.87 |
| 87 | 10.12.209.88/30 | 10.12.209.89 – 10.12.209.90 | 10.12.209.91 |
| 88 | 10.12.209.92/30 | 10.12.209.93 – 10.12.209.94 | 10.12.209.95 |
| 89 | 10.12.209.96/30 | 10.12.209.97 – 10.12.209.98 | 10.12.209.99 |
| 90 | 10.12.209.100/30 | 10.12.209.101 – 10.12.209.102 | 10.12.209.103 |
| 91 | 10.12.209.104/30 | 10.12.209.105 – 10.12.209.106 | 10.12.209.107 |
| 92 | 10.12.209.108/30 | 10.12.209.109 – 10.12.209.110 | 10.12.209.111 |
| 93 | 10.12.209.112/30 | 10.12.209.113 – 10.12.209.114 | 10.12.209.115 |
| 94 | 10.12.209.116/30 | 10.12.209.117 – 10.12.209.118 | 10.12.209.119 |
| 95 | 10.12.209.120/30 | 10.12.209.121 – 10.12.209.122 | 10.12.209.123 |
| 96 | 10.12.209.124/30 | 10.12.209.125 – 10.12.209.126 | 10.12.209.127 |
| 97 | 10.12.209.128/30 | 10.12.209.129 – 10.12.209.130 | 10.12.209.131 |
| 98 | 10.12.209.132/30 | 10.12.209.133 – 10.12.209.134 | 10.12.209.135 |
| 99 | 10.12.209.136/30 | 10.12.209.137 – 10.12.209.138 | 10.12.209.139 |
| 100 | 10.12.209.140/30 | 10.12.209.141 – 10.12.209.142 | 10.12.209.143 |
| 101 | 10.12.209.144/30 | 10.12.209.145 – 10.12.209.146 | 10.12.209.147 |
| 102 | 10.12.209.148/30 | 10.12.209.149 – 10.12.209.150 | 10.12.209.151 |
| 103 | 10.12.209.152/30 | 10.12.209.153 – 10.12.209.154 | 10.12.209.155 |
| 104 | 10.12.209.156/30 | 10.12.209.157 – 10.12.209.158 | 10.12.209.159 |
| 105 | 10.12.209.160/30 | 10.12.209.161 – 10.12.209.162 | 10.12.209.163 |
| 106 | 10.12.209.164/30 | 10.12.209.165 – 10.12.209.166 | 10.12.209.167 |
| 107 | 10.12.209.168/30 | 10.12.209.169 – 10.12.209.170 | 10.12.209.171 |
| 108 | 10.12.209.172/30 | 10.12.209.173 – 10.12.209.174 | 10.12.209.175 |
| 109 | 10.12.209.176/30 | 10.12.209.177 – 10.12.209.178 | 10.12.209.179 |
| 110 | 10.12.209.180/30 | 10.12.209.181 – 10.12.209.182 | 10.12.209.183 |
| 111 | 10.12.209.184/30 | 10.12.209.185 – 10.12.209.186 | 10.12.209.187 |
| 112 | 10.12.209.188/30 | 10.12.209.189 – 10.12.209.190 | 10.12.209.191 |
| 113 | 10.12.209.192/30 | 10.12.209.193 – 10.12.209.194 | 10.12.209.195 |
| 114 | 10.12.209.196/30 | 10.12.209.197 – 10.12.209.198 | 10.12.209.199 |
| 115 | 10.12.209.200/30 | 10.12.209.201 – 10.12.209.202 | 10.12.209.203 |
| 116 | 10.12.209.204/30 | 10.12.209.205 – 10.12.209.206 | 10.12.209.207 |
| 117 | 10.12.209.208/30 | 10.12.209.209 – 10.12.209.210 | 10.12.209.211 |
| 118 | 10.12.209.212/30 | 10.12.209.213 – 10.12.209.214 | 10.12.209.215 |
| 119 | 10.12.209.216/30 | 10.12.209.217 – 10.12.209.218 | 10.12.209.219 |
| 120 | 10.12.209.220/30 | 10.12.209.221 – 10.12.209.222 | 10.12.209.223 |
| 121 | 10.12.209.224/30 | 10.12.209.225 – 10.12.209.226 | 10.12.209.227 |
| 122 | 10.12.209.228/30 | 10.12.209.229 – 10.12.209.230 | 10.12.209.231 |
| 123 | 10.12.209.232/30 | 10.12.209.233 – 10.12.209.234 | 10.12.209.235 |
| 124 | 10.12.209.236/30 | 10.12.209.237 – 10.12.209.238 | 10.12.209.239 |
| 125 | 10.12.209.240/30 | 10.12.209.241 – 10.12.209.242 | 10.12.209.243 |
| 126 | 10.12.209.244/30 | 10.12.209.245 – 10.12.209.246 | 10.12.209.247 |
| 127 | 10.12.209.248/30 | 10.12.209.249 – 10.12.209.250 | 10.12.209.251 |
| 128 | 10.12.209.252/30 | 10.12.209.253 – 10.12.209.254 | 10.12.209.255 |
| 129 | 10.12.210.0/30 | 10.12.210.1 – 10.12.210.2 | 10.12.210.3 |
| 130 | 10.12.210.4/30 | 10.12.210.5 – 10.12.210.6 | 10.12.210.7 |
| 131 | 10.12.210.8/30 | 10.12.210.9 – 10.12.210.10 | 10.12.210.11 |
| 132 | 10.12.210.12/30 | 10.12.210.13 – 10.12.210.14 | 10.12.210.15 |
| 133 | 10.12.210.16/30 | 10.12.210.17 – 10.12.210.18 | 10.12.210.19 |
| 134 | 10.12.210.20/30 | 10.12.210.21 – 10.12.210.22 | 10.12.210.23 |
| 135 | 10.12.210.24/30 | 10.12.210.25 – 10.12.210.26 | 10.12.210.27 |
| 136 | 10.12.210.28/30 | 10.12.210.29 – 10.12.210.30 | 10.12.210.31 |
| 137 | 10.12.210.32/30 | 10.12.210.33 – 10.12.210.34 | 10.12.210.35 |
| 138 | 10.12.210.36/30 | 10.12.210.37 – 10.12.210.38 | 10.12.210.39 |
| 139 | 10.12.210.40/30 | 10.12.210.41 – 10.12.210.42 | 10.12.210.43 |
| 140 | 10.12.210.44/30 | 10.12.210.45 – 10.12.210.46 | 10.12.210.47 |
| 141 | 10.12.210.48/30 | 10.12.210.49 – 10.12.210.50 | 10.12.210.51 |
| 142 | 10.12.210.52/30 | 10.12.210.53 – 10.12.210.54 | 10.12.210.55 |
| 143 | 10.12.210.56/30 | 10.12.210.57 – 10.12.210.58 | 10.12.210.59 |
| 144 | 10.12.210.60/30 | 10.12.210.61 – 10.12.210.62 | 10.12.210.63 |
| 145 | 10.12.210.64/30 | 10.12.210.65 – 10.12.210.66 | 10.12.210.67 |
| 146 | 10.12.210.68/30 | 10.12.210.69 – 10.12.210.70 | 10.12.210.71 |
| 147 | 10.12.210.72/30 | 10.12.210.73 – 10.12.210.74 | 10.12.210.75 |
| 148 | 10.12.210.76/30 | 10.12.210.77 – 10.12.210.78 | 10.12.210.79 |
| 149 | 10.12.210.80/30 | 10.12.210.81 – 10.12.210.82 | 10.12.210.83 |
| 150 | 10.12.210.84/30 | 10.12.210.85 – 10.12.210.86 | 10.12.210.87 |
| 151 | 10.12.210.88/30 | 10.12.210.89 – 10.12.210.90 | 10.12.210.91 |
| 152 | 10.12.210.92/30 | 10.12.210.93 – 10.12.210.94 | 10.12.210.95 |
| 153 | 10.12.210.96/30 | 10.12.210.97 – 10.12.210.98 | 10.12.210.99 |
| 154 | 10.12.210.100/30 | 10.12.210.101 – 10.12.210.102 | 10.12.210.103 |
| 155 | 10.12.210.104/30 | 10.12.210.105 – 10.12.210.106 | 10.12.210.107 |
| 156 | 10.12.210.108/30 | 10.12.210.109 – 10.12.210.110 | 10.12.210.111 |
| 157 | 10.12.210.112/30 | 10.12.210.113 – 10.12.210.114 | 10.12.210.115 |
| 158 | 10.12.210.116/30 | 10.12.210.117 – 10.12.210.118 | 10.12.210.119 |
| 159 | 10.12.210.120/30 | 10.12.210.121 – 10.12.210.122 | 10.12.210.123 |
| 160 | 10.12.210.124/30 | 10.12.210.125 – 10.12.210.126 | 10.12.210.127 |
| 161 | 10.12.210.128/30 | 10.12.210.129 – 10.12.210.130 | 10.12.210.131 |
| 162 | 10.12.210.132/30 | 10.12.210.133 – 10.12.210.134 | 10.12.210.135 |
| 163 | 10.12.210.136/30 | 10.12.210.137 – 10.12.210.138 | 10.12.210.139 |
| 164 | 10.12.210.140/30 | 10.12.210.141 – 10.12.210.142 | 10.12.210.143 |
| 165 | 10.12.210.144/30 | 10.12.210.145 – 10.12.210.146 | 10.12.210.147 |
| 166 | 10.12.210.148/30 | 10.12.210.149 – 10.12.210.150 | 10.12.210.151 |
| 167 | 10.12.210.152/30 | 10.12.210.153 – 10.12.210.154 | 10.12.210.155 |
| 168 | 10.12.210.156/30 | 10.12.210.157 – 10.12.210.158 | 10.12.210.159 |
| 169 | 10.12.210.160/30 | 10.12.210.161 – 10.12.210.162 | 10.12.210.163 |
| 170 | 10.12.210.164/30 | 10.12.210.165 – 10.12.210.166 | 10.12.210.167 |
| 171 | 10.12.210.168/30 | 10.12.210.169 – 10.12.210.170 | 10.12.210.171 |
| 172 | 10.12.210.172/30 | 10.12.210.173 – 10.12.210.174 | 10.12.210.175 |
| 173 | 10.12.210.176/30 | 10.12.210.177 – 10.12.210.178 | 10.12.210.179 |
| 174 | 10.12.210.180/30 | 10.12.210.181 – 10.12.210.182 | 10.12.210.183 |
| 175 | 10.12.210.184/30 | 10.12.210.185 – 10.12.210.186 | 10.12.210.187 |
| 176 | 10.12.210.188/30 | 10.12.210.189 – 10.12.210.190 | 10.12.210.191 |
| 177 | 10.12.210.192/30 | 10.12.210.193 – 10.12.210.194 | 10.12.210.195 |
| 178 | 10.12.210.196/30 | 10.12.210.197 – 10.12.210.198 | 10.12.210.199 |
| 179 | 10.12.210.200/30 | 10.12.210.201 – 10.12.210.202 | 10.12.210.203 |
| 180 | 10.12.210.204/30 | 10.12.210.205 – 10.12.210.206 | 10.12.210.207 |
| 181 | 10.12.210.208/30 | 10.12.210.209 – 10.12.210.210 | 10.12.210.211 |
| 182 | 10.12.210.212/30 | 10.12.210.213 – 10.12.210.214 | 10.12.210.215 |
| 183 | 10.12.210.216/30 | 10.12.210.217 – 10.12.210.218 | 10.12.210.219 |
| 184 | 10.12.210.220/30 | 10.12.210.221 – 10.12.210.222 | 10.12.210.223 |
| 185 | 10.12.210.224/30 | 10.12.210.225 – 10.12.210.226 | 10.12.210.227 |
| 186 | 10.12.210.228/30 | 10.12.210.229 – 10.12.210.230 | 10.12.210.231 |
| 187 | 10.12.210.232/30 | 10.12.210.233 – 10.12.210.234 | 10.12.210.235 |
| 188 | 10.12.210.236/30 | 10.12.210.237 – 10.12.210.238 | 10.12.210.239 |
| 189 | 10.12.210.240/30 | 10.12.210.241 – 10.12.210.242 | 10.12.210.243 |
| 190 | 10.12.210.244/30 | 10.12.210.245 – 10.12.210.246 | 10.12.210.247 |
| 191 | 10.12.210.248/30 | 10.12.210.249 – 10.12.210.250 | 10.12.210.251 |
| 192 | 10.12.210.252/30 | 10.12.210.253 – 10.12.210.254 | 10.12.210.255 |
| 193 | 10.12.211.0/30 | 10.12.211.1 – 10.12.211.2 | 10.12.211.3 |
| 194 | 10.12.211.4/30 | 10.12.211.5 – 10.12.211.6 | 10.12.211.7 |
| 195 | 10.12.211.8/30 | 10.12.211.9 – 10.12.211.10 | 10.12.211.11 |
| 196 | 10.12.211.12/30 | 10.12.211.13 – 10.12.211.14 | 10.12.211.15 |
| 197 | 10.12.211.16/30 | 10.12.211.17 – 10.12.211.18 | 10.12.211.19 |
| 198 | 10.12.211.20/30 | 10.12.211.21 – 10.12.211.22 | 10.12.211.23 |
| 199 | 10.12.211.24/30 | 10.12.211.25 – 10.12.211.26 | 10.12.211.27 |
| 200 | 10.12.211.28/30 | 10.12.211.29 – 10.12.211.30 | 10.12.211.31 |
| 201 | 10.12.211.32/30 | 10.12.211.33 – 10.12.211.34 | 10.12.211.35 |
| 202 | 10.12.211.36/30 | 10.12.211.37 – 10.12.211.38 | 10.12.211.39 |
| 203 | 10.12.211.40/30 | 10.12.211.41 – 10.12.211.42 | 10.12.211.43 |
| 204 | 10.12.211.44/30 | 10.12.211.45 – 10.12.211.46 | 10.12.211.47 |
| 205 | 10.12.211.48/30 | 10.12.211.49 – 10.12.211.50 | 10.12.211.51 |
| 206 | 10.12.211.52/30 | 10.12.211.53 – 10.12.211.54 | 10.12.211.55 |
| 207 | 10.12.211.56/30 | 10.12.211.57 – 10.12.211.58 | 10.12.211.59 |
| 208 | 10.12.211.60/30 | 10.12.211.61 – 10.12.211.62 | 10.12.211.63 |
| 209 | 10.12.211.64/30 | 10.12.211.65 – 10.12.211.66 | 10.12.211.67 |
| 210 | 10.12.211.68/30 | 10.12.211.69 – 10.12.211.70 | 10.12.211.71 |
| 211 | 10.12.211.72/30 | 10.12.211.73 – 10.12.211.74 | 10.12.211.75 |
| 212 | 10.12.211.76/30 | 10.12.211.77 – 10.12.211.78 | 10.12.211.79 |
| 213 | 10.12.211.80/30 | 10.12.211.81 – 10.12.211.82 | 10.12.211.83 |
| 214 | 10.12.211.84/30 | 10.12.211.85 – 10.12.211.86 | 10.12.211.87 |
| 215 | 10.12.211.88/30 | 10.12.211.89 – 10.12.211.90 | 10.12.211.91 |
| 216 | 10.12.211.92/30 | 10.12.211.93 – 10.12.211.94 | 10.12.211.95 |
| 217 | 10.12.211.96/30 | 10.12.211.97 – 10.12.211.98 | 10.12.211.99 |
| 218 | 10.12.211.100/30 | 10.12.211.101 – 10.12.211.102 | 10.12.211.103 |
| 219 | 10.12.211.104/30 | 10.12.211.105 – 10.12.211.106 | 10.12.211.107 |
| 220 | 10.12.211.108/30 | 10.12.211.109 – 10.12.211.110 | 10.12.211.111 |
| 221 | 10.12.211.112/30 | 10.12.211.113 – 10.12.211.114 | 10.12.211.115 |
| 222 | 10.12.211.116/30 | 10.12.211.117 – 10.12.211.118 | 10.12.211.119 |
| 223 | 10.12.211.120/30 | 10.12.211.121 – 10.12.211.122 | 10.12.211.123 |
| 224 | 10.12.211.124/30 | 10.12.211.125 – 10.12.211.126 | 10.12.211.127 |
| 225 | 10.12.211.128/30 | 10.12.211.129 – 10.12.211.130 | 10.12.211.131 |
| 226 | 10.12.211.132/30 | 10.12.211.133 – 10.12.211.134 | 10.12.211.135 |
| 227 | 10.12.211.136/30 | 10.12.211.137 – 10.12.211.138 | 10.12.211.139 |
| 228 | 10.12.211.140/30 | 10.12.211.141 – 10.12.211.142 | 10.12.211.143 |
| 229 | 10.12.211.144/30 | 10.12.211.145 – 10.12.211.146 | 10.12.211.147 |
| 230 | 10.12.211.148/30 | 10.12.211.149 – 10.12.211.150 | 10.12.211.151 |
| 231 | 10.12.211.152/30 | 10.12.211.153 – 10.12.211.154 | 10.12.211.155 |
| 232 | 10.12.211.156/30 | 10.12.211.157 – 10.12.211.158 | 10.12.211.159 |
| 233 | 10.12.211.160/30 | 10.12.211.161 – 10.12.211.162 | 10.12.211.163 |
| 234 | 10.12.211.164/30 | 10.12.211.165 – 10.12.211.166 | 10.12.211.167 |
| 235 | 10.12.211.168/30 | 10.12.211.169 – 10.12.211.170 | 10.12.211.171 |
| 236 | 10.12.211.172/30 | 10.12.211.173 – 10.12.211.174 | 10.12.211.175 |
| 237 | 10.12.211.176/30 | 10.12.211.177 – 10.12.211.178 | 10.12.211.179 |
| 238 | 10.12.211.180/30 | 10.12.211.181 – 10.12.211.182 | 10.12.211.183 |
| 239 | 10.12.211.184/30 | 10.12.211.185 – 10.12.211.186 | 10.12.211.187 |
| 240 | 10.12.211.188/30 | 10.12.211.189 – 10.12.211.190 | 10.12.211.191 |
| 241 | 10.12.211.192/30 | 10.12.211.193 – 10.12.211.194 | 10.12.211.195 |
| 242 | 10.12.211.196/30 | 10.12.211.197 – 10.12.211.198 | 10.12.211.199 |
| 243 | 10.12.211.200/30 | 10.12.211.201 – 10.12.211.202 | 10.12.211.203 |
| 244 | 10.12.211.204/30 | 10.12.211.205 – 10.12.211.206 | 10.12.211.207 |
| 245 | 10.12.211.208/30 | 10.12.211.209 – 10.12.211.210 | 10.12.211.211 |
| 246 | 10.12.211.212/30 | 10.12.211.213 – 10.12.211.214 | 10.12.211.215 |
| 247 | 10.12.211.216/30 | 10.12.211.217 – 10.12.211.218 | 10.12.211.219 |
| 248 | 10.12.211.220/30 | 10.12.211.221 – 10.12.211.222 | 10.12.211.223 |
| 249 | 10.12.211.224/30 | 10.12.211.225 – 10.12.211.226 | 10.12.211.227 |
| 250 | 10.12.211.228/30 | 10.12.211.229 – 10.12.211.230 | 10.12.211.231 |
| 251 | 10.12.211.232/30 | 10.12.211.233 – 10.12.211.234 | 10.12.211.235 |
| 252 | 10.12.211.236/30 | 10.12.211.237 – 10.12.211.238 | 10.12.211.239 |
| 253 | 10.12.211.240/30 | 10.12.211.241 – 10.12.211.242 | 10.12.211.243 |
| 254 | 10.12.211.244/30 | 10.12.211.245 – 10.12.211.246 | 10.12.211.247 |
| 255 | 10.12.211.248/30 | 10.12.211.249 – 10.12.211.250 | 10.12.211.251 |
| 256 | 10.12.211.252/30 | 10.12.211.253 – 10.12.211.254 | 10.12.211.255 |
showing 256 of 1,024
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 /20 |
|---|---|---|---|---|
| /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 | 1 |
| /21 | 255.255.248.0 | 2,048 | 2,046 | 2 split → |
| /22 | 255.255.252.0 | 1,024 | 1,022 | 4 split → |
| /23 | 255.255.254.0 | 512 | 510 | 8 split → |
| /24 | 255.255.255.0 | 256 | 254 | 16 split → |
| /25 | 255.255.255.128 | 128 | 126 | 32 split → |
| /26 | 255.255.255.192 | 64 | 62 | 64 split → |
| /27 | 255.255.255.224 | 32 | 30 | 128 split → |
| /28 | 255.255.255.240 | 16 | 14 | 256 split → |
| /29 | 255.255.255.248 | 8 | 6 | 512 split → |
| /30 | 255.255.255.252 | 4 | 2 | 1,024 split → |
| /31 | 255.255.255.254 | 2 | 2 | 2,048 split → |
| /32 | 255.255.255.255 | 1 | 1 | 4,096 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.