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)10.166.20.0/22
network10.166.20.0/22
broadcast10.166.23.255
first host10.166.20.1
last host10.166.23.254
subnet mask255.255.252.0
wildcard0.0.3.255
addresses1,024
usable hosts1,022
classA
ipcalc 10.166.20.0/22
address00001010.10100110.00010100.00000000
subnet mask11111111.11111111.11111100.00000000
network00001010.10100110.00010100.00000000
broadcast00001010.10100110.00010111.11111111
green = network part, grey = host part
hex0x0aa61400
decimal178656256
reverse dns0.20.166.10.in-addr.arpa
ipv4-mapped::ffff:aa6:1400
/22 split into /30 · 256 subnets
close ×| # | network | host range | broadcast |
|---|---|---|---|
| 1 | 10.166.20.0/30 | 10.166.20.1 – 10.166.20.2 | 10.166.20.3 |
| 2 | 10.166.20.4/30 | 10.166.20.5 – 10.166.20.6 | 10.166.20.7 |
| 3 | 10.166.20.8/30 | 10.166.20.9 – 10.166.20.10 | 10.166.20.11 |
| 4 | 10.166.20.12/30 | 10.166.20.13 – 10.166.20.14 | 10.166.20.15 |
| 5 | 10.166.20.16/30 | 10.166.20.17 – 10.166.20.18 | 10.166.20.19 |
| 6 | 10.166.20.20/30 | 10.166.20.21 – 10.166.20.22 | 10.166.20.23 |
| 7 | 10.166.20.24/30 | 10.166.20.25 – 10.166.20.26 | 10.166.20.27 |
| 8 | 10.166.20.28/30 | 10.166.20.29 – 10.166.20.30 | 10.166.20.31 |
| 9 | 10.166.20.32/30 | 10.166.20.33 – 10.166.20.34 | 10.166.20.35 |
| 10 | 10.166.20.36/30 | 10.166.20.37 – 10.166.20.38 | 10.166.20.39 |
| 11 | 10.166.20.40/30 | 10.166.20.41 – 10.166.20.42 | 10.166.20.43 |
| 12 | 10.166.20.44/30 | 10.166.20.45 – 10.166.20.46 | 10.166.20.47 |
| 13 | 10.166.20.48/30 | 10.166.20.49 – 10.166.20.50 | 10.166.20.51 |
| 14 | 10.166.20.52/30 | 10.166.20.53 – 10.166.20.54 | 10.166.20.55 |
| 15 | 10.166.20.56/30 | 10.166.20.57 – 10.166.20.58 | 10.166.20.59 |
| 16 | 10.166.20.60/30 | 10.166.20.61 – 10.166.20.62 | 10.166.20.63 |
| 17 | 10.166.20.64/30 | 10.166.20.65 – 10.166.20.66 | 10.166.20.67 |
| 18 | 10.166.20.68/30 | 10.166.20.69 – 10.166.20.70 | 10.166.20.71 |
| 19 | 10.166.20.72/30 | 10.166.20.73 – 10.166.20.74 | 10.166.20.75 |
| 20 | 10.166.20.76/30 | 10.166.20.77 – 10.166.20.78 | 10.166.20.79 |
| 21 | 10.166.20.80/30 | 10.166.20.81 – 10.166.20.82 | 10.166.20.83 |
| 22 | 10.166.20.84/30 | 10.166.20.85 – 10.166.20.86 | 10.166.20.87 |
| 23 | 10.166.20.88/30 | 10.166.20.89 – 10.166.20.90 | 10.166.20.91 |
| 24 | 10.166.20.92/30 | 10.166.20.93 – 10.166.20.94 | 10.166.20.95 |
| 25 | 10.166.20.96/30 | 10.166.20.97 – 10.166.20.98 | 10.166.20.99 |
| 26 | 10.166.20.100/30 | 10.166.20.101 – 10.166.20.102 | 10.166.20.103 |
| 27 | 10.166.20.104/30 | 10.166.20.105 – 10.166.20.106 | 10.166.20.107 |
| 28 | 10.166.20.108/30 | 10.166.20.109 – 10.166.20.110 | 10.166.20.111 |
| 29 | 10.166.20.112/30 | 10.166.20.113 – 10.166.20.114 | 10.166.20.115 |
| 30 | 10.166.20.116/30 | 10.166.20.117 – 10.166.20.118 | 10.166.20.119 |
| 31 | 10.166.20.120/30 | 10.166.20.121 – 10.166.20.122 | 10.166.20.123 |
| 32 | 10.166.20.124/30 | 10.166.20.125 – 10.166.20.126 | 10.166.20.127 |
| 33 | 10.166.20.128/30 | 10.166.20.129 – 10.166.20.130 | 10.166.20.131 |
| 34 | 10.166.20.132/30 | 10.166.20.133 – 10.166.20.134 | 10.166.20.135 |
| 35 | 10.166.20.136/30 | 10.166.20.137 – 10.166.20.138 | 10.166.20.139 |
| 36 | 10.166.20.140/30 | 10.166.20.141 – 10.166.20.142 | 10.166.20.143 |
| 37 | 10.166.20.144/30 | 10.166.20.145 – 10.166.20.146 | 10.166.20.147 |
| 38 | 10.166.20.148/30 | 10.166.20.149 – 10.166.20.150 | 10.166.20.151 |
| 39 | 10.166.20.152/30 | 10.166.20.153 – 10.166.20.154 | 10.166.20.155 |
| 40 | 10.166.20.156/30 | 10.166.20.157 – 10.166.20.158 | 10.166.20.159 |
| 41 | 10.166.20.160/30 | 10.166.20.161 – 10.166.20.162 | 10.166.20.163 |
| 42 | 10.166.20.164/30 | 10.166.20.165 – 10.166.20.166 | 10.166.20.167 |
| 43 | 10.166.20.168/30 | 10.166.20.169 – 10.166.20.170 | 10.166.20.171 |
| 44 | 10.166.20.172/30 | 10.166.20.173 – 10.166.20.174 | 10.166.20.175 |
| 45 | 10.166.20.176/30 | 10.166.20.177 – 10.166.20.178 | 10.166.20.179 |
| 46 | 10.166.20.180/30 | 10.166.20.181 – 10.166.20.182 | 10.166.20.183 |
| 47 | 10.166.20.184/30 | 10.166.20.185 – 10.166.20.186 | 10.166.20.187 |
| 48 | 10.166.20.188/30 | 10.166.20.189 – 10.166.20.190 | 10.166.20.191 |
| 49 | 10.166.20.192/30 | 10.166.20.193 – 10.166.20.194 | 10.166.20.195 |
| 50 | 10.166.20.196/30 | 10.166.20.197 – 10.166.20.198 | 10.166.20.199 |
| 51 | 10.166.20.200/30 | 10.166.20.201 – 10.166.20.202 | 10.166.20.203 |
| 52 | 10.166.20.204/30 | 10.166.20.205 – 10.166.20.206 | 10.166.20.207 |
| 53 | 10.166.20.208/30 | 10.166.20.209 – 10.166.20.210 | 10.166.20.211 |
| 54 | 10.166.20.212/30 | 10.166.20.213 – 10.166.20.214 | 10.166.20.215 |
| 55 | 10.166.20.216/30 | 10.166.20.217 – 10.166.20.218 | 10.166.20.219 |
| 56 | 10.166.20.220/30 | 10.166.20.221 – 10.166.20.222 | 10.166.20.223 |
| 57 | 10.166.20.224/30 | 10.166.20.225 – 10.166.20.226 | 10.166.20.227 |
| 58 | 10.166.20.228/30 | 10.166.20.229 – 10.166.20.230 | 10.166.20.231 |
| 59 | 10.166.20.232/30 | 10.166.20.233 – 10.166.20.234 | 10.166.20.235 |
| 60 | 10.166.20.236/30 | 10.166.20.237 – 10.166.20.238 | 10.166.20.239 |
| 61 | 10.166.20.240/30 | 10.166.20.241 – 10.166.20.242 | 10.166.20.243 |
| 62 | 10.166.20.244/30 | 10.166.20.245 – 10.166.20.246 | 10.166.20.247 |
| 63 | 10.166.20.248/30 | 10.166.20.249 – 10.166.20.250 | 10.166.20.251 |
| 64 | 10.166.20.252/30 | 10.166.20.253 – 10.166.20.254 | 10.166.20.255 |
| 65 | 10.166.21.0/30 | 10.166.21.1 – 10.166.21.2 | 10.166.21.3 |
| 66 | 10.166.21.4/30 | 10.166.21.5 – 10.166.21.6 | 10.166.21.7 |
| 67 | 10.166.21.8/30 | 10.166.21.9 – 10.166.21.10 | 10.166.21.11 |
| 68 | 10.166.21.12/30 | 10.166.21.13 – 10.166.21.14 | 10.166.21.15 |
| 69 | 10.166.21.16/30 | 10.166.21.17 – 10.166.21.18 | 10.166.21.19 |
| 70 | 10.166.21.20/30 | 10.166.21.21 – 10.166.21.22 | 10.166.21.23 |
| 71 | 10.166.21.24/30 | 10.166.21.25 – 10.166.21.26 | 10.166.21.27 |
| 72 | 10.166.21.28/30 | 10.166.21.29 – 10.166.21.30 | 10.166.21.31 |
| 73 | 10.166.21.32/30 | 10.166.21.33 – 10.166.21.34 | 10.166.21.35 |
| 74 | 10.166.21.36/30 | 10.166.21.37 – 10.166.21.38 | 10.166.21.39 |
| 75 | 10.166.21.40/30 | 10.166.21.41 – 10.166.21.42 | 10.166.21.43 |
| 76 | 10.166.21.44/30 | 10.166.21.45 – 10.166.21.46 | 10.166.21.47 |
| 77 | 10.166.21.48/30 | 10.166.21.49 – 10.166.21.50 | 10.166.21.51 |
| 78 | 10.166.21.52/30 | 10.166.21.53 – 10.166.21.54 | 10.166.21.55 |
| 79 | 10.166.21.56/30 | 10.166.21.57 – 10.166.21.58 | 10.166.21.59 |
| 80 | 10.166.21.60/30 | 10.166.21.61 – 10.166.21.62 | 10.166.21.63 |
| 81 | 10.166.21.64/30 | 10.166.21.65 – 10.166.21.66 | 10.166.21.67 |
| 82 | 10.166.21.68/30 | 10.166.21.69 – 10.166.21.70 | 10.166.21.71 |
| 83 | 10.166.21.72/30 | 10.166.21.73 – 10.166.21.74 | 10.166.21.75 |
| 84 | 10.166.21.76/30 | 10.166.21.77 – 10.166.21.78 | 10.166.21.79 |
| 85 | 10.166.21.80/30 | 10.166.21.81 – 10.166.21.82 | 10.166.21.83 |
| 86 | 10.166.21.84/30 | 10.166.21.85 – 10.166.21.86 | 10.166.21.87 |
| 87 | 10.166.21.88/30 | 10.166.21.89 – 10.166.21.90 | 10.166.21.91 |
| 88 | 10.166.21.92/30 | 10.166.21.93 – 10.166.21.94 | 10.166.21.95 |
| 89 | 10.166.21.96/30 | 10.166.21.97 – 10.166.21.98 | 10.166.21.99 |
| 90 | 10.166.21.100/30 | 10.166.21.101 – 10.166.21.102 | 10.166.21.103 |
| 91 | 10.166.21.104/30 | 10.166.21.105 – 10.166.21.106 | 10.166.21.107 |
| 92 | 10.166.21.108/30 | 10.166.21.109 – 10.166.21.110 | 10.166.21.111 |
| 93 | 10.166.21.112/30 | 10.166.21.113 – 10.166.21.114 | 10.166.21.115 |
| 94 | 10.166.21.116/30 | 10.166.21.117 – 10.166.21.118 | 10.166.21.119 |
| 95 | 10.166.21.120/30 | 10.166.21.121 – 10.166.21.122 | 10.166.21.123 |
| 96 | 10.166.21.124/30 | 10.166.21.125 – 10.166.21.126 | 10.166.21.127 |
| 97 | 10.166.21.128/30 | 10.166.21.129 – 10.166.21.130 | 10.166.21.131 |
| 98 | 10.166.21.132/30 | 10.166.21.133 – 10.166.21.134 | 10.166.21.135 |
| 99 | 10.166.21.136/30 | 10.166.21.137 – 10.166.21.138 | 10.166.21.139 |
| 100 | 10.166.21.140/30 | 10.166.21.141 – 10.166.21.142 | 10.166.21.143 |
| 101 | 10.166.21.144/30 | 10.166.21.145 – 10.166.21.146 | 10.166.21.147 |
| 102 | 10.166.21.148/30 | 10.166.21.149 – 10.166.21.150 | 10.166.21.151 |
| 103 | 10.166.21.152/30 | 10.166.21.153 – 10.166.21.154 | 10.166.21.155 |
| 104 | 10.166.21.156/30 | 10.166.21.157 – 10.166.21.158 | 10.166.21.159 |
| 105 | 10.166.21.160/30 | 10.166.21.161 – 10.166.21.162 | 10.166.21.163 |
| 106 | 10.166.21.164/30 | 10.166.21.165 – 10.166.21.166 | 10.166.21.167 |
| 107 | 10.166.21.168/30 | 10.166.21.169 – 10.166.21.170 | 10.166.21.171 |
| 108 | 10.166.21.172/30 | 10.166.21.173 – 10.166.21.174 | 10.166.21.175 |
| 109 | 10.166.21.176/30 | 10.166.21.177 – 10.166.21.178 | 10.166.21.179 |
| 110 | 10.166.21.180/30 | 10.166.21.181 – 10.166.21.182 | 10.166.21.183 |
| 111 | 10.166.21.184/30 | 10.166.21.185 – 10.166.21.186 | 10.166.21.187 |
| 112 | 10.166.21.188/30 | 10.166.21.189 – 10.166.21.190 | 10.166.21.191 |
| 113 | 10.166.21.192/30 | 10.166.21.193 – 10.166.21.194 | 10.166.21.195 |
| 114 | 10.166.21.196/30 | 10.166.21.197 – 10.166.21.198 | 10.166.21.199 |
| 115 | 10.166.21.200/30 | 10.166.21.201 – 10.166.21.202 | 10.166.21.203 |
| 116 | 10.166.21.204/30 | 10.166.21.205 – 10.166.21.206 | 10.166.21.207 |
| 117 | 10.166.21.208/30 | 10.166.21.209 – 10.166.21.210 | 10.166.21.211 |
| 118 | 10.166.21.212/30 | 10.166.21.213 – 10.166.21.214 | 10.166.21.215 |
| 119 | 10.166.21.216/30 | 10.166.21.217 – 10.166.21.218 | 10.166.21.219 |
| 120 | 10.166.21.220/30 | 10.166.21.221 – 10.166.21.222 | 10.166.21.223 |
| 121 | 10.166.21.224/30 | 10.166.21.225 – 10.166.21.226 | 10.166.21.227 |
| 122 | 10.166.21.228/30 | 10.166.21.229 – 10.166.21.230 | 10.166.21.231 |
| 123 | 10.166.21.232/30 | 10.166.21.233 – 10.166.21.234 | 10.166.21.235 |
| 124 | 10.166.21.236/30 | 10.166.21.237 – 10.166.21.238 | 10.166.21.239 |
| 125 | 10.166.21.240/30 | 10.166.21.241 – 10.166.21.242 | 10.166.21.243 |
| 126 | 10.166.21.244/30 | 10.166.21.245 – 10.166.21.246 | 10.166.21.247 |
| 127 | 10.166.21.248/30 | 10.166.21.249 – 10.166.21.250 | 10.166.21.251 |
| 128 | 10.166.21.252/30 | 10.166.21.253 – 10.166.21.254 | 10.166.21.255 |
| 129 | 10.166.22.0/30 | 10.166.22.1 – 10.166.22.2 | 10.166.22.3 |
| 130 | 10.166.22.4/30 | 10.166.22.5 – 10.166.22.6 | 10.166.22.7 |
| 131 | 10.166.22.8/30 | 10.166.22.9 – 10.166.22.10 | 10.166.22.11 |
| 132 | 10.166.22.12/30 | 10.166.22.13 – 10.166.22.14 | 10.166.22.15 |
| 133 | 10.166.22.16/30 | 10.166.22.17 – 10.166.22.18 | 10.166.22.19 |
| 134 | 10.166.22.20/30 | 10.166.22.21 – 10.166.22.22 | 10.166.22.23 |
| 135 | 10.166.22.24/30 | 10.166.22.25 – 10.166.22.26 | 10.166.22.27 |
| 136 | 10.166.22.28/30 | 10.166.22.29 – 10.166.22.30 | 10.166.22.31 |
| 137 | 10.166.22.32/30 | 10.166.22.33 – 10.166.22.34 | 10.166.22.35 |
| 138 | 10.166.22.36/30 | 10.166.22.37 – 10.166.22.38 | 10.166.22.39 |
| 139 | 10.166.22.40/30 | 10.166.22.41 – 10.166.22.42 | 10.166.22.43 |
| 140 | 10.166.22.44/30 | 10.166.22.45 – 10.166.22.46 | 10.166.22.47 |
| 141 | 10.166.22.48/30 | 10.166.22.49 – 10.166.22.50 | 10.166.22.51 |
| 142 | 10.166.22.52/30 | 10.166.22.53 – 10.166.22.54 | 10.166.22.55 |
| 143 | 10.166.22.56/30 | 10.166.22.57 – 10.166.22.58 | 10.166.22.59 |
| 144 | 10.166.22.60/30 | 10.166.22.61 – 10.166.22.62 | 10.166.22.63 |
| 145 | 10.166.22.64/30 | 10.166.22.65 – 10.166.22.66 | 10.166.22.67 |
| 146 | 10.166.22.68/30 | 10.166.22.69 – 10.166.22.70 | 10.166.22.71 |
| 147 | 10.166.22.72/30 | 10.166.22.73 – 10.166.22.74 | 10.166.22.75 |
| 148 | 10.166.22.76/30 | 10.166.22.77 – 10.166.22.78 | 10.166.22.79 |
| 149 | 10.166.22.80/30 | 10.166.22.81 – 10.166.22.82 | 10.166.22.83 |
| 150 | 10.166.22.84/30 | 10.166.22.85 – 10.166.22.86 | 10.166.22.87 |
| 151 | 10.166.22.88/30 | 10.166.22.89 – 10.166.22.90 | 10.166.22.91 |
| 152 | 10.166.22.92/30 | 10.166.22.93 – 10.166.22.94 | 10.166.22.95 |
| 153 | 10.166.22.96/30 | 10.166.22.97 – 10.166.22.98 | 10.166.22.99 |
| 154 | 10.166.22.100/30 | 10.166.22.101 – 10.166.22.102 | 10.166.22.103 |
| 155 | 10.166.22.104/30 | 10.166.22.105 – 10.166.22.106 | 10.166.22.107 |
| 156 | 10.166.22.108/30 | 10.166.22.109 – 10.166.22.110 | 10.166.22.111 |
| 157 | 10.166.22.112/30 | 10.166.22.113 – 10.166.22.114 | 10.166.22.115 |
| 158 | 10.166.22.116/30 | 10.166.22.117 – 10.166.22.118 | 10.166.22.119 |
| 159 | 10.166.22.120/30 | 10.166.22.121 – 10.166.22.122 | 10.166.22.123 |
| 160 | 10.166.22.124/30 | 10.166.22.125 – 10.166.22.126 | 10.166.22.127 |
| 161 | 10.166.22.128/30 | 10.166.22.129 – 10.166.22.130 | 10.166.22.131 |
| 162 | 10.166.22.132/30 | 10.166.22.133 – 10.166.22.134 | 10.166.22.135 |
| 163 | 10.166.22.136/30 | 10.166.22.137 – 10.166.22.138 | 10.166.22.139 |
| 164 | 10.166.22.140/30 | 10.166.22.141 – 10.166.22.142 | 10.166.22.143 |
| 165 | 10.166.22.144/30 | 10.166.22.145 – 10.166.22.146 | 10.166.22.147 |
| 166 | 10.166.22.148/30 | 10.166.22.149 – 10.166.22.150 | 10.166.22.151 |
| 167 | 10.166.22.152/30 | 10.166.22.153 – 10.166.22.154 | 10.166.22.155 |
| 168 | 10.166.22.156/30 | 10.166.22.157 – 10.166.22.158 | 10.166.22.159 |
| 169 | 10.166.22.160/30 | 10.166.22.161 – 10.166.22.162 | 10.166.22.163 |
| 170 | 10.166.22.164/30 | 10.166.22.165 – 10.166.22.166 | 10.166.22.167 |
| 171 | 10.166.22.168/30 | 10.166.22.169 – 10.166.22.170 | 10.166.22.171 |
| 172 | 10.166.22.172/30 | 10.166.22.173 – 10.166.22.174 | 10.166.22.175 |
| 173 | 10.166.22.176/30 | 10.166.22.177 – 10.166.22.178 | 10.166.22.179 |
| 174 | 10.166.22.180/30 | 10.166.22.181 – 10.166.22.182 | 10.166.22.183 |
| 175 | 10.166.22.184/30 | 10.166.22.185 – 10.166.22.186 | 10.166.22.187 |
| 176 | 10.166.22.188/30 | 10.166.22.189 – 10.166.22.190 | 10.166.22.191 |
| 177 | 10.166.22.192/30 | 10.166.22.193 – 10.166.22.194 | 10.166.22.195 |
| 178 | 10.166.22.196/30 | 10.166.22.197 – 10.166.22.198 | 10.166.22.199 |
| 179 | 10.166.22.200/30 | 10.166.22.201 – 10.166.22.202 | 10.166.22.203 |
| 180 | 10.166.22.204/30 | 10.166.22.205 – 10.166.22.206 | 10.166.22.207 |
| 181 | 10.166.22.208/30 | 10.166.22.209 – 10.166.22.210 | 10.166.22.211 |
| 182 | 10.166.22.212/30 | 10.166.22.213 – 10.166.22.214 | 10.166.22.215 |
| 183 | 10.166.22.216/30 | 10.166.22.217 – 10.166.22.218 | 10.166.22.219 |
| 184 | 10.166.22.220/30 | 10.166.22.221 – 10.166.22.222 | 10.166.22.223 |
| 185 | 10.166.22.224/30 | 10.166.22.225 – 10.166.22.226 | 10.166.22.227 |
| 186 | 10.166.22.228/30 | 10.166.22.229 – 10.166.22.230 | 10.166.22.231 |
| 187 | 10.166.22.232/30 | 10.166.22.233 – 10.166.22.234 | 10.166.22.235 |
| 188 | 10.166.22.236/30 | 10.166.22.237 – 10.166.22.238 | 10.166.22.239 |
| 189 | 10.166.22.240/30 | 10.166.22.241 – 10.166.22.242 | 10.166.22.243 |
| 190 | 10.166.22.244/30 | 10.166.22.245 – 10.166.22.246 | 10.166.22.247 |
| 191 | 10.166.22.248/30 | 10.166.22.249 – 10.166.22.250 | 10.166.22.251 |
| 192 | 10.166.22.252/30 | 10.166.22.253 – 10.166.22.254 | 10.166.22.255 |
| 193 | 10.166.23.0/30 | 10.166.23.1 – 10.166.23.2 | 10.166.23.3 |
| 194 | 10.166.23.4/30 | 10.166.23.5 – 10.166.23.6 | 10.166.23.7 |
| 195 | 10.166.23.8/30 | 10.166.23.9 – 10.166.23.10 | 10.166.23.11 |
| 196 | 10.166.23.12/30 | 10.166.23.13 – 10.166.23.14 | 10.166.23.15 |
| 197 | 10.166.23.16/30 | 10.166.23.17 – 10.166.23.18 | 10.166.23.19 |
| 198 | 10.166.23.20/30 | 10.166.23.21 – 10.166.23.22 | 10.166.23.23 |
| 199 | 10.166.23.24/30 | 10.166.23.25 – 10.166.23.26 | 10.166.23.27 |
| 200 | 10.166.23.28/30 | 10.166.23.29 – 10.166.23.30 | 10.166.23.31 |
| 201 | 10.166.23.32/30 | 10.166.23.33 – 10.166.23.34 | 10.166.23.35 |
| 202 | 10.166.23.36/30 | 10.166.23.37 – 10.166.23.38 | 10.166.23.39 |
| 203 | 10.166.23.40/30 | 10.166.23.41 – 10.166.23.42 | 10.166.23.43 |
| 204 | 10.166.23.44/30 | 10.166.23.45 – 10.166.23.46 | 10.166.23.47 |
| 205 | 10.166.23.48/30 | 10.166.23.49 – 10.166.23.50 | 10.166.23.51 |
| 206 | 10.166.23.52/30 | 10.166.23.53 – 10.166.23.54 | 10.166.23.55 |
| 207 | 10.166.23.56/30 | 10.166.23.57 – 10.166.23.58 | 10.166.23.59 |
| 208 | 10.166.23.60/30 | 10.166.23.61 – 10.166.23.62 | 10.166.23.63 |
| 209 | 10.166.23.64/30 | 10.166.23.65 – 10.166.23.66 | 10.166.23.67 |
| 210 | 10.166.23.68/30 | 10.166.23.69 – 10.166.23.70 | 10.166.23.71 |
| 211 | 10.166.23.72/30 | 10.166.23.73 – 10.166.23.74 | 10.166.23.75 |
| 212 | 10.166.23.76/30 | 10.166.23.77 – 10.166.23.78 | 10.166.23.79 |
| 213 | 10.166.23.80/30 | 10.166.23.81 – 10.166.23.82 | 10.166.23.83 |
| 214 | 10.166.23.84/30 | 10.166.23.85 – 10.166.23.86 | 10.166.23.87 |
| 215 | 10.166.23.88/30 | 10.166.23.89 – 10.166.23.90 | 10.166.23.91 |
| 216 | 10.166.23.92/30 | 10.166.23.93 – 10.166.23.94 | 10.166.23.95 |
| 217 | 10.166.23.96/30 | 10.166.23.97 – 10.166.23.98 | 10.166.23.99 |
| 218 | 10.166.23.100/30 | 10.166.23.101 – 10.166.23.102 | 10.166.23.103 |
| 219 | 10.166.23.104/30 | 10.166.23.105 – 10.166.23.106 | 10.166.23.107 |
| 220 | 10.166.23.108/30 | 10.166.23.109 – 10.166.23.110 | 10.166.23.111 |
| 221 | 10.166.23.112/30 | 10.166.23.113 – 10.166.23.114 | 10.166.23.115 |
| 222 | 10.166.23.116/30 | 10.166.23.117 – 10.166.23.118 | 10.166.23.119 |
| 223 | 10.166.23.120/30 | 10.166.23.121 – 10.166.23.122 | 10.166.23.123 |
| 224 | 10.166.23.124/30 | 10.166.23.125 – 10.166.23.126 | 10.166.23.127 |
| 225 | 10.166.23.128/30 | 10.166.23.129 – 10.166.23.130 | 10.166.23.131 |
| 226 | 10.166.23.132/30 | 10.166.23.133 – 10.166.23.134 | 10.166.23.135 |
| 227 | 10.166.23.136/30 | 10.166.23.137 – 10.166.23.138 | 10.166.23.139 |
| 228 | 10.166.23.140/30 | 10.166.23.141 – 10.166.23.142 | 10.166.23.143 |
| 229 | 10.166.23.144/30 | 10.166.23.145 – 10.166.23.146 | 10.166.23.147 |
| 230 | 10.166.23.148/30 | 10.166.23.149 – 10.166.23.150 | 10.166.23.151 |
| 231 | 10.166.23.152/30 | 10.166.23.153 – 10.166.23.154 | 10.166.23.155 |
| 232 | 10.166.23.156/30 | 10.166.23.157 – 10.166.23.158 | 10.166.23.159 |
| 233 | 10.166.23.160/30 | 10.166.23.161 – 10.166.23.162 | 10.166.23.163 |
| 234 | 10.166.23.164/30 | 10.166.23.165 – 10.166.23.166 | 10.166.23.167 |
| 235 | 10.166.23.168/30 | 10.166.23.169 – 10.166.23.170 | 10.166.23.171 |
| 236 | 10.166.23.172/30 | 10.166.23.173 – 10.166.23.174 | 10.166.23.175 |
| 237 | 10.166.23.176/30 | 10.166.23.177 – 10.166.23.178 | 10.166.23.179 |
| 238 | 10.166.23.180/30 | 10.166.23.181 – 10.166.23.182 | 10.166.23.183 |
| 239 | 10.166.23.184/30 | 10.166.23.185 – 10.166.23.186 | 10.166.23.187 |
| 240 | 10.166.23.188/30 | 10.166.23.189 – 10.166.23.190 | 10.166.23.191 |
| 241 | 10.166.23.192/30 | 10.166.23.193 – 10.166.23.194 | 10.166.23.195 |
| 242 | 10.166.23.196/30 | 10.166.23.197 – 10.166.23.198 | 10.166.23.199 |
| 243 | 10.166.23.200/30 | 10.166.23.201 – 10.166.23.202 | 10.166.23.203 |
| 244 | 10.166.23.204/30 | 10.166.23.205 – 10.166.23.206 | 10.166.23.207 |
| 245 | 10.166.23.208/30 | 10.166.23.209 – 10.166.23.210 | 10.166.23.211 |
| 246 | 10.166.23.212/30 | 10.166.23.213 – 10.166.23.214 | 10.166.23.215 |
| 247 | 10.166.23.216/30 | 10.166.23.217 – 10.166.23.218 | 10.166.23.219 |
| 248 | 10.166.23.220/30 | 10.166.23.221 – 10.166.23.222 | 10.166.23.223 |
| 249 | 10.166.23.224/30 | 10.166.23.225 – 10.166.23.226 | 10.166.23.227 |
| 250 | 10.166.23.228/30 | 10.166.23.229 – 10.166.23.230 | 10.166.23.231 |
| 251 | 10.166.23.232/30 | 10.166.23.233 – 10.166.23.234 | 10.166.23.235 |
| 252 | 10.166.23.236/30 | 10.166.23.237 – 10.166.23.238 | 10.166.23.239 |
| 253 | 10.166.23.240/30 | 10.166.23.241 – 10.166.23.242 | 10.166.23.243 |
| 254 | 10.166.23.244/30 | 10.166.23.245 – 10.166.23.246 | 10.166.23.247 |
| 255 | 10.166.23.248/30 | 10.166.23.249 – 10.166.23.250 | 10.166.23.251 |
| 256 | 10.166.23.252/30 | 10.166.23.253 – 10.166.23.254 | 10.166.23.255 |
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 /22 |
|---|---|---|---|---|
| /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 | 1 |
| /23 | 255.255.254.0 | 512 | 510 | 2 split → |
| /24 | 255.255.255.0 | 256 | 254 | 4 split → |
| /25 | 255.255.255.128 | 128 | 126 | 8 split → |
| /26 | 255.255.255.192 | 64 | 62 | 16 split → |
| /27 | 255.255.255.224 | 32 | 30 | 32 split → |
| /28 | 255.255.255.240 | 16 | 14 | 64 split → |
| /29 | 255.255.255.248 | 8 | 6 | 128 split → |
| /30 | 255.255.255.252 | 4 | 2 | 256 split → |
| /31 | 255.255.255.254 | 2 | 2 | 512 split → |
| /32 | 255.255.255.255 | 1 | 1 | 1,024 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.