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)10.4.80.0/21
network10.4.80.0/21
broadcast10.4.87.255
first host10.4.80.1
last host10.4.87.254
subnet mask255.255.248.0
wildcard0.0.7.255
addresses2,048
usable hosts2,046
classA
ipcalc 10.4.80.0/21
address00001010.00000100.01010000.00000000
subnet mask11111111.11111111.11111000.00000000
network00001010.00000100.01010000.00000000
broadcast00001010.00000100.01010111.11111111
green = network part, grey = host part
hex0x0a045000
decimal168054784
reverse dns0.80.4.10.in-addr.arpa
ipv4-mapped::ffff:a04:5000
/21 split into /30 · 512 subnets
close ×| # | network | host range | broadcast |
|---|---|---|---|
| 1 | 10.4.80.0/30 | 10.4.80.1 – 10.4.80.2 | 10.4.80.3 |
| 2 | 10.4.80.4/30 | 10.4.80.5 – 10.4.80.6 | 10.4.80.7 |
| 3 | 10.4.80.8/30 | 10.4.80.9 – 10.4.80.10 | 10.4.80.11 |
| 4 | 10.4.80.12/30 | 10.4.80.13 – 10.4.80.14 | 10.4.80.15 |
| 5 | 10.4.80.16/30 | 10.4.80.17 – 10.4.80.18 | 10.4.80.19 |
| 6 | 10.4.80.20/30 | 10.4.80.21 – 10.4.80.22 | 10.4.80.23 |
| 7 | 10.4.80.24/30 | 10.4.80.25 – 10.4.80.26 | 10.4.80.27 |
| 8 | 10.4.80.28/30 | 10.4.80.29 – 10.4.80.30 | 10.4.80.31 |
| 9 | 10.4.80.32/30 | 10.4.80.33 – 10.4.80.34 | 10.4.80.35 |
| 10 | 10.4.80.36/30 | 10.4.80.37 – 10.4.80.38 | 10.4.80.39 |
| 11 | 10.4.80.40/30 | 10.4.80.41 – 10.4.80.42 | 10.4.80.43 |
| 12 | 10.4.80.44/30 | 10.4.80.45 – 10.4.80.46 | 10.4.80.47 |
| 13 | 10.4.80.48/30 | 10.4.80.49 – 10.4.80.50 | 10.4.80.51 |
| 14 | 10.4.80.52/30 | 10.4.80.53 – 10.4.80.54 | 10.4.80.55 |
| 15 | 10.4.80.56/30 | 10.4.80.57 – 10.4.80.58 | 10.4.80.59 |
| 16 | 10.4.80.60/30 | 10.4.80.61 – 10.4.80.62 | 10.4.80.63 |
| 17 | 10.4.80.64/30 | 10.4.80.65 – 10.4.80.66 | 10.4.80.67 |
| 18 | 10.4.80.68/30 | 10.4.80.69 – 10.4.80.70 | 10.4.80.71 |
| 19 | 10.4.80.72/30 | 10.4.80.73 – 10.4.80.74 | 10.4.80.75 |
| 20 | 10.4.80.76/30 | 10.4.80.77 – 10.4.80.78 | 10.4.80.79 |
| 21 | 10.4.80.80/30 | 10.4.80.81 – 10.4.80.82 | 10.4.80.83 |
| 22 | 10.4.80.84/30 | 10.4.80.85 – 10.4.80.86 | 10.4.80.87 |
| 23 | 10.4.80.88/30 | 10.4.80.89 – 10.4.80.90 | 10.4.80.91 |
| 24 | 10.4.80.92/30 | 10.4.80.93 – 10.4.80.94 | 10.4.80.95 |
| 25 | 10.4.80.96/30 | 10.4.80.97 – 10.4.80.98 | 10.4.80.99 |
| 26 | 10.4.80.100/30 | 10.4.80.101 – 10.4.80.102 | 10.4.80.103 |
| 27 | 10.4.80.104/30 | 10.4.80.105 – 10.4.80.106 | 10.4.80.107 |
| 28 | 10.4.80.108/30 | 10.4.80.109 – 10.4.80.110 | 10.4.80.111 |
| 29 | 10.4.80.112/30 | 10.4.80.113 – 10.4.80.114 | 10.4.80.115 |
| 30 | 10.4.80.116/30 | 10.4.80.117 – 10.4.80.118 | 10.4.80.119 |
| 31 | 10.4.80.120/30 | 10.4.80.121 – 10.4.80.122 | 10.4.80.123 |
| 32 | 10.4.80.124/30 | 10.4.80.125 – 10.4.80.126 | 10.4.80.127 |
| 33 | 10.4.80.128/30 | 10.4.80.129 – 10.4.80.130 | 10.4.80.131 |
| 34 | 10.4.80.132/30 | 10.4.80.133 – 10.4.80.134 | 10.4.80.135 |
| 35 | 10.4.80.136/30 | 10.4.80.137 – 10.4.80.138 | 10.4.80.139 |
| 36 | 10.4.80.140/30 | 10.4.80.141 – 10.4.80.142 | 10.4.80.143 |
| 37 | 10.4.80.144/30 | 10.4.80.145 – 10.4.80.146 | 10.4.80.147 |
| 38 | 10.4.80.148/30 | 10.4.80.149 – 10.4.80.150 | 10.4.80.151 |
| 39 | 10.4.80.152/30 | 10.4.80.153 – 10.4.80.154 | 10.4.80.155 |
| 40 | 10.4.80.156/30 | 10.4.80.157 – 10.4.80.158 | 10.4.80.159 |
| 41 | 10.4.80.160/30 | 10.4.80.161 – 10.4.80.162 | 10.4.80.163 |
| 42 | 10.4.80.164/30 | 10.4.80.165 – 10.4.80.166 | 10.4.80.167 |
| 43 | 10.4.80.168/30 | 10.4.80.169 – 10.4.80.170 | 10.4.80.171 |
| 44 | 10.4.80.172/30 | 10.4.80.173 – 10.4.80.174 | 10.4.80.175 |
| 45 | 10.4.80.176/30 | 10.4.80.177 – 10.4.80.178 | 10.4.80.179 |
| 46 | 10.4.80.180/30 | 10.4.80.181 – 10.4.80.182 | 10.4.80.183 |
| 47 | 10.4.80.184/30 | 10.4.80.185 – 10.4.80.186 | 10.4.80.187 |
| 48 | 10.4.80.188/30 | 10.4.80.189 – 10.4.80.190 | 10.4.80.191 |
| 49 | 10.4.80.192/30 | 10.4.80.193 – 10.4.80.194 | 10.4.80.195 |
| 50 | 10.4.80.196/30 | 10.4.80.197 – 10.4.80.198 | 10.4.80.199 |
| 51 | 10.4.80.200/30 | 10.4.80.201 – 10.4.80.202 | 10.4.80.203 |
| 52 | 10.4.80.204/30 | 10.4.80.205 – 10.4.80.206 | 10.4.80.207 |
| 53 | 10.4.80.208/30 | 10.4.80.209 – 10.4.80.210 | 10.4.80.211 |
| 54 | 10.4.80.212/30 | 10.4.80.213 – 10.4.80.214 | 10.4.80.215 |
| 55 | 10.4.80.216/30 | 10.4.80.217 – 10.4.80.218 | 10.4.80.219 |
| 56 | 10.4.80.220/30 | 10.4.80.221 – 10.4.80.222 | 10.4.80.223 |
| 57 | 10.4.80.224/30 | 10.4.80.225 – 10.4.80.226 | 10.4.80.227 |
| 58 | 10.4.80.228/30 | 10.4.80.229 – 10.4.80.230 | 10.4.80.231 |
| 59 | 10.4.80.232/30 | 10.4.80.233 – 10.4.80.234 | 10.4.80.235 |
| 60 | 10.4.80.236/30 | 10.4.80.237 – 10.4.80.238 | 10.4.80.239 |
| 61 | 10.4.80.240/30 | 10.4.80.241 – 10.4.80.242 | 10.4.80.243 |
| 62 | 10.4.80.244/30 | 10.4.80.245 – 10.4.80.246 | 10.4.80.247 |
| 63 | 10.4.80.248/30 | 10.4.80.249 – 10.4.80.250 | 10.4.80.251 |
| 64 | 10.4.80.252/30 | 10.4.80.253 – 10.4.80.254 | 10.4.80.255 |
| 65 | 10.4.81.0/30 | 10.4.81.1 – 10.4.81.2 | 10.4.81.3 |
| 66 | 10.4.81.4/30 | 10.4.81.5 – 10.4.81.6 | 10.4.81.7 |
| 67 | 10.4.81.8/30 | 10.4.81.9 – 10.4.81.10 | 10.4.81.11 |
| 68 | 10.4.81.12/30 | 10.4.81.13 – 10.4.81.14 | 10.4.81.15 |
| 69 | 10.4.81.16/30 | 10.4.81.17 – 10.4.81.18 | 10.4.81.19 |
| 70 | 10.4.81.20/30 | 10.4.81.21 – 10.4.81.22 | 10.4.81.23 |
| 71 | 10.4.81.24/30 | 10.4.81.25 – 10.4.81.26 | 10.4.81.27 |
| 72 | 10.4.81.28/30 | 10.4.81.29 – 10.4.81.30 | 10.4.81.31 |
| 73 | 10.4.81.32/30 | 10.4.81.33 – 10.4.81.34 | 10.4.81.35 |
| 74 | 10.4.81.36/30 | 10.4.81.37 – 10.4.81.38 | 10.4.81.39 |
| 75 | 10.4.81.40/30 | 10.4.81.41 – 10.4.81.42 | 10.4.81.43 |
| 76 | 10.4.81.44/30 | 10.4.81.45 – 10.4.81.46 | 10.4.81.47 |
| 77 | 10.4.81.48/30 | 10.4.81.49 – 10.4.81.50 | 10.4.81.51 |
| 78 | 10.4.81.52/30 | 10.4.81.53 – 10.4.81.54 | 10.4.81.55 |
| 79 | 10.4.81.56/30 | 10.4.81.57 – 10.4.81.58 | 10.4.81.59 |
| 80 | 10.4.81.60/30 | 10.4.81.61 – 10.4.81.62 | 10.4.81.63 |
| 81 | 10.4.81.64/30 | 10.4.81.65 – 10.4.81.66 | 10.4.81.67 |
| 82 | 10.4.81.68/30 | 10.4.81.69 – 10.4.81.70 | 10.4.81.71 |
| 83 | 10.4.81.72/30 | 10.4.81.73 – 10.4.81.74 | 10.4.81.75 |
| 84 | 10.4.81.76/30 | 10.4.81.77 – 10.4.81.78 | 10.4.81.79 |
| 85 | 10.4.81.80/30 | 10.4.81.81 – 10.4.81.82 | 10.4.81.83 |
| 86 | 10.4.81.84/30 | 10.4.81.85 – 10.4.81.86 | 10.4.81.87 |
| 87 | 10.4.81.88/30 | 10.4.81.89 – 10.4.81.90 | 10.4.81.91 |
| 88 | 10.4.81.92/30 | 10.4.81.93 – 10.4.81.94 | 10.4.81.95 |
| 89 | 10.4.81.96/30 | 10.4.81.97 – 10.4.81.98 | 10.4.81.99 |
| 90 | 10.4.81.100/30 | 10.4.81.101 – 10.4.81.102 | 10.4.81.103 |
| 91 | 10.4.81.104/30 | 10.4.81.105 – 10.4.81.106 | 10.4.81.107 |
| 92 | 10.4.81.108/30 | 10.4.81.109 – 10.4.81.110 | 10.4.81.111 |
| 93 | 10.4.81.112/30 | 10.4.81.113 – 10.4.81.114 | 10.4.81.115 |
| 94 | 10.4.81.116/30 | 10.4.81.117 – 10.4.81.118 | 10.4.81.119 |
| 95 | 10.4.81.120/30 | 10.4.81.121 – 10.4.81.122 | 10.4.81.123 |
| 96 | 10.4.81.124/30 | 10.4.81.125 – 10.4.81.126 | 10.4.81.127 |
| 97 | 10.4.81.128/30 | 10.4.81.129 – 10.4.81.130 | 10.4.81.131 |
| 98 | 10.4.81.132/30 | 10.4.81.133 – 10.4.81.134 | 10.4.81.135 |
| 99 | 10.4.81.136/30 | 10.4.81.137 – 10.4.81.138 | 10.4.81.139 |
| 100 | 10.4.81.140/30 | 10.4.81.141 – 10.4.81.142 | 10.4.81.143 |
| 101 | 10.4.81.144/30 | 10.4.81.145 – 10.4.81.146 | 10.4.81.147 |
| 102 | 10.4.81.148/30 | 10.4.81.149 – 10.4.81.150 | 10.4.81.151 |
| 103 | 10.4.81.152/30 | 10.4.81.153 – 10.4.81.154 | 10.4.81.155 |
| 104 | 10.4.81.156/30 | 10.4.81.157 – 10.4.81.158 | 10.4.81.159 |
| 105 | 10.4.81.160/30 | 10.4.81.161 – 10.4.81.162 | 10.4.81.163 |
| 106 | 10.4.81.164/30 | 10.4.81.165 – 10.4.81.166 | 10.4.81.167 |
| 107 | 10.4.81.168/30 | 10.4.81.169 – 10.4.81.170 | 10.4.81.171 |
| 108 | 10.4.81.172/30 | 10.4.81.173 – 10.4.81.174 | 10.4.81.175 |
| 109 | 10.4.81.176/30 | 10.4.81.177 – 10.4.81.178 | 10.4.81.179 |
| 110 | 10.4.81.180/30 | 10.4.81.181 – 10.4.81.182 | 10.4.81.183 |
| 111 | 10.4.81.184/30 | 10.4.81.185 – 10.4.81.186 | 10.4.81.187 |
| 112 | 10.4.81.188/30 | 10.4.81.189 – 10.4.81.190 | 10.4.81.191 |
| 113 | 10.4.81.192/30 | 10.4.81.193 – 10.4.81.194 | 10.4.81.195 |
| 114 | 10.4.81.196/30 | 10.4.81.197 – 10.4.81.198 | 10.4.81.199 |
| 115 | 10.4.81.200/30 | 10.4.81.201 – 10.4.81.202 | 10.4.81.203 |
| 116 | 10.4.81.204/30 | 10.4.81.205 – 10.4.81.206 | 10.4.81.207 |
| 117 | 10.4.81.208/30 | 10.4.81.209 – 10.4.81.210 | 10.4.81.211 |
| 118 | 10.4.81.212/30 | 10.4.81.213 – 10.4.81.214 | 10.4.81.215 |
| 119 | 10.4.81.216/30 | 10.4.81.217 – 10.4.81.218 | 10.4.81.219 |
| 120 | 10.4.81.220/30 | 10.4.81.221 – 10.4.81.222 | 10.4.81.223 |
| 121 | 10.4.81.224/30 | 10.4.81.225 – 10.4.81.226 | 10.4.81.227 |
| 122 | 10.4.81.228/30 | 10.4.81.229 – 10.4.81.230 | 10.4.81.231 |
| 123 | 10.4.81.232/30 | 10.4.81.233 – 10.4.81.234 | 10.4.81.235 |
| 124 | 10.4.81.236/30 | 10.4.81.237 – 10.4.81.238 | 10.4.81.239 |
| 125 | 10.4.81.240/30 | 10.4.81.241 – 10.4.81.242 | 10.4.81.243 |
| 126 | 10.4.81.244/30 | 10.4.81.245 – 10.4.81.246 | 10.4.81.247 |
| 127 | 10.4.81.248/30 | 10.4.81.249 – 10.4.81.250 | 10.4.81.251 |
| 128 | 10.4.81.252/30 | 10.4.81.253 – 10.4.81.254 | 10.4.81.255 |
| 129 | 10.4.82.0/30 | 10.4.82.1 – 10.4.82.2 | 10.4.82.3 |
| 130 | 10.4.82.4/30 | 10.4.82.5 – 10.4.82.6 | 10.4.82.7 |
| 131 | 10.4.82.8/30 | 10.4.82.9 – 10.4.82.10 | 10.4.82.11 |
| 132 | 10.4.82.12/30 | 10.4.82.13 – 10.4.82.14 | 10.4.82.15 |
| 133 | 10.4.82.16/30 | 10.4.82.17 – 10.4.82.18 | 10.4.82.19 |
| 134 | 10.4.82.20/30 | 10.4.82.21 – 10.4.82.22 | 10.4.82.23 |
| 135 | 10.4.82.24/30 | 10.4.82.25 – 10.4.82.26 | 10.4.82.27 |
| 136 | 10.4.82.28/30 | 10.4.82.29 – 10.4.82.30 | 10.4.82.31 |
| 137 | 10.4.82.32/30 | 10.4.82.33 – 10.4.82.34 | 10.4.82.35 |
| 138 | 10.4.82.36/30 | 10.4.82.37 – 10.4.82.38 | 10.4.82.39 |
| 139 | 10.4.82.40/30 | 10.4.82.41 – 10.4.82.42 | 10.4.82.43 |
| 140 | 10.4.82.44/30 | 10.4.82.45 – 10.4.82.46 | 10.4.82.47 |
| 141 | 10.4.82.48/30 | 10.4.82.49 – 10.4.82.50 | 10.4.82.51 |
| 142 | 10.4.82.52/30 | 10.4.82.53 – 10.4.82.54 | 10.4.82.55 |
| 143 | 10.4.82.56/30 | 10.4.82.57 – 10.4.82.58 | 10.4.82.59 |
| 144 | 10.4.82.60/30 | 10.4.82.61 – 10.4.82.62 | 10.4.82.63 |
| 145 | 10.4.82.64/30 | 10.4.82.65 – 10.4.82.66 | 10.4.82.67 |
| 146 | 10.4.82.68/30 | 10.4.82.69 – 10.4.82.70 | 10.4.82.71 |
| 147 | 10.4.82.72/30 | 10.4.82.73 – 10.4.82.74 | 10.4.82.75 |
| 148 | 10.4.82.76/30 | 10.4.82.77 – 10.4.82.78 | 10.4.82.79 |
| 149 | 10.4.82.80/30 | 10.4.82.81 – 10.4.82.82 | 10.4.82.83 |
| 150 | 10.4.82.84/30 | 10.4.82.85 – 10.4.82.86 | 10.4.82.87 |
| 151 | 10.4.82.88/30 | 10.4.82.89 – 10.4.82.90 | 10.4.82.91 |
| 152 | 10.4.82.92/30 | 10.4.82.93 – 10.4.82.94 | 10.4.82.95 |
| 153 | 10.4.82.96/30 | 10.4.82.97 – 10.4.82.98 | 10.4.82.99 |
| 154 | 10.4.82.100/30 | 10.4.82.101 – 10.4.82.102 | 10.4.82.103 |
| 155 | 10.4.82.104/30 | 10.4.82.105 – 10.4.82.106 | 10.4.82.107 |
| 156 | 10.4.82.108/30 | 10.4.82.109 – 10.4.82.110 | 10.4.82.111 |
| 157 | 10.4.82.112/30 | 10.4.82.113 – 10.4.82.114 | 10.4.82.115 |
| 158 | 10.4.82.116/30 | 10.4.82.117 – 10.4.82.118 | 10.4.82.119 |
| 159 | 10.4.82.120/30 | 10.4.82.121 – 10.4.82.122 | 10.4.82.123 |
| 160 | 10.4.82.124/30 | 10.4.82.125 – 10.4.82.126 | 10.4.82.127 |
| 161 | 10.4.82.128/30 | 10.4.82.129 – 10.4.82.130 | 10.4.82.131 |
| 162 | 10.4.82.132/30 | 10.4.82.133 – 10.4.82.134 | 10.4.82.135 |
| 163 | 10.4.82.136/30 | 10.4.82.137 – 10.4.82.138 | 10.4.82.139 |
| 164 | 10.4.82.140/30 | 10.4.82.141 – 10.4.82.142 | 10.4.82.143 |
| 165 | 10.4.82.144/30 | 10.4.82.145 – 10.4.82.146 | 10.4.82.147 |
| 166 | 10.4.82.148/30 | 10.4.82.149 – 10.4.82.150 | 10.4.82.151 |
| 167 | 10.4.82.152/30 | 10.4.82.153 – 10.4.82.154 | 10.4.82.155 |
| 168 | 10.4.82.156/30 | 10.4.82.157 – 10.4.82.158 | 10.4.82.159 |
| 169 | 10.4.82.160/30 | 10.4.82.161 – 10.4.82.162 | 10.4.82.163 |
| 170 | 10.4.82.164/30 | 10.4.82.165 – 10.4.82.166 | 10.4.82.167 |
| 171 | 10.4.82.168/30 | 10.4.82.169 – 10.4.82.170 | 10.4.82.171 |
| 172 | 10.4.82.172/30 | 10.4.82.173 – 10.4.82.174 | 10.4.82.175 |
| 173 | 10.4.82.176/30 | 10.4.82.177 – 10.4.82.178 | 10.4.82.179 |
| 174 | 10.4.82.180/30 | 10.4.82.181 – 10.4.82.182 | 10.4.82.183 |
| 175 | 10.4.82.184/30 | 10.4.82.185 – 10.4.82.186 | 10.4.82.187 |
| 176 | 10.4.82.188/30 | 10.4.82.189 – 10.4.82.190 | 10.4.82.191 |
| 177 | 10.4.82.192/30 | 10.4.82.193 – 10.4.82.194 | 10.4.82.195 |
| 178 | 10.4.82.196/30 | 10.4.82.197 – 10.4.82.198 | 10.4.82.199 |
| 179 | 10.4.82.200/30 | 10.4.82.201 – 10.4.82.202 | 10.4.82.203 |
| 180 | 10.4.82.204/30 | 10.4.82.205 – 10.4.82.206 | 10.4.82.207 |
| 181 | 10.4.82.208/30 | 10.4.82.209 – 10.4.82.210 | 10.4.82.211 |
| 182 | 10.4.82.212/30 | 10.4.82.213 – 10.4.82.214 | 10.4.82.215 |
| 183 | 10.4.82.216/30 | 10.4.82.217 – 10.4.82.218 | 10.4.82.219 |
| 184 | 10.4.82.220/30 | 10.4.82.221 – 10.4.82.222 | 10.4.82.223 |
| 185 | 10.4.82.224/30 | 10.4.82.225 – 10.4.82.226 | 10.4.82.227 |
| 186 | 10.4.82.228/30 | 10.4.82.229 – 10.4.82.230 | 10.4.82.231 |
| 187 | 10.4.82.232/30 | 10.4.82.233 – 10.4.82.234 | 10.4.82.235 |
| 188 | 10.4.82.236/30 | 10.4.82.237 – 10.4.82.238 | 10.4.82.239 |
| 189 | 10.4.82.240/30 | 10.4.82.241 – 10.4.82.242 | 10.4.82.243 |
| 190 | 10.4.82.244/30 | 10.4.82.245 – 10.4.82.246 | 10.4.82.247 |
| 191 | 10.4.82.248/30 | 10.4.82.249 – 10.4.82.250 | 10.4.82.251 |
| 192 | 10.4.82.252/30 | 10.4.82.253 – 10.4.82.254 | 10.4.82.255 |
| 193 | 10.4.83.0/30 | 10.4.83.1 – 10.4.83.2 | 10.4.83.3 |
| 194 | 10.4.83.4/30 | 10.4.83.5 – 10.4.83.6 | 10.4.83.7 |
| 195 | 10.4.83.8/30 | 10.4.83.9 – 10.4.83.10 | 10.4.83.11 |
| 196 | 10.4.83.12/30 | 10.4.83.13 – 10.4.83.14 | 10.4.83.15 |
| 197 | 10.4.83.16/30 | 10.4.83.17 – 10.4.83.18 | 10.4.83.19 |
| 198 | 10.4.83.20/30 | 10.4.83.21 – 10.4.83.22 | 10.4.83.23 |
| 199 | 10.4.83.24/30 | 10.4.83.25 – 10.4.83.26 | 10.4.83.27 |
| 200 | 10.4.83.28/30 | 10.4.83.29 – 10.4.83.30 | 10.4.83.31 |
| 201 | 10.4.83.32/30 | 10.4.83.33 – 10.4.83.34 | 10.4.83.35 |
| 202 | 10.4.83.36/30 | 10.4.83.37 – 10.4.83.38 | 10.4.83.39 |
| 203 | 10.4.83.40/30 | 10.4.83.41 – 10.4.83.42 | 10.4.83.43 |
| 204 | 10.4.83.44/30 | 10.4.83.45 – 10.4.83.46 | 10.4.83.47 |
| 205 | 10.4.83.48/30 | 10.4.83.49 – 10.4.83.50 | 10.4.83.51 |
| 206 | 10.4.83.52/30 | 10.4.83.53 – 10.4.83.54 | 10.4.83.55 |
| 207 | 10.4.83.56/30 | 10.4.83.57 – 10.4.83.58 | 10.4.83.59 |
| 208 | 10.4.83.60/30 | 10.4.83.61 – 10.4.83.62 | 10.4.83.63 |
| 209 | 10.4.83.64/30 | 10.4.83.65 – 10.4.83.66 | 10.4.83.67 |
| 210 | 10.4.83.68/30 | 10.4.83.69 – 10.4.83.70 | 10.4.83.71 |
| 211 | 10.4.83.72/30 | 10.4.83.73 – 10.4.83.74 | 10.4.83.75 |
| 212 | 10.4.83.76/30 | 10.4.83.77 – 10.4.83.78 | 10.4.83.79 |
| 213 | 10.4.83.80/30 | 10.4.83.81 – 10.4.83.82 | 10.4.83.83 |
| 214 | 10.4.83.84/30 | 10.4.83.85 – 10.4.83.86 | 10.4.83.87 |
| 215 | 10.4.83.88/30 | 10.4.83.89 – 10.4.83.90 | 10.4.83.91 |
| 216 | 10.4.83.92/30 | 10.4.83.93 – 10.4.83.94 | 10.4.83.95 |
| 217 | 10.4.83.96/30 | 10.4.83.97 – 10.4.83.98 | 10.4.83.99 |
| 218 | 10.4.83.100/30 | 10.4.83.101 – 10.4.83.102 | 10.4.83.103 |
| 219 | 10.4.83.104/30 | 10.4.83.105 – 10.4.83.106 | 10.4.83.107 |
| 220 | 10.4.83.108/30 | 10.4.83.109 – 10.4.83.110 | 10.4.83.111 |
| 221 | 10.4.83.112/30 | 10.4.83.113 – 10.4.83.114 | 10.4.83.115 |
| 222 | 10.4.83.116/30 | 10.4.83.117 – 10.4.83.118 | 10.4.83.119 |
| 223 | 10.4.83.120/30 | 10.4.83.121 – 10.4.83.122 | 10.4.83.123 |
| 224 | 10.4.83.124/30 | 10.4.83.125 – 10.4.83.126 | 10.4.83.127 |
| 225 | 10.4.83.128/30 | 10.4.83.129 – 10.4.83.130 | 10.4.83.131 |
| 226 | 10.4.83.132/30 | 10.4.83.133 – 10.4.83.134 | 10.4.83.135 |
| 227 | 10.4.83.136/30 | 10.4.83.137 – 10.4.83.138 | 10.4.83.139 |
| 228 | 10.4.83.140/30 | 10.4.83.141 – 10.4.83.142 | 10.4.83.143 |
| 229 | 10.4.83.144/30 | 10.4.83.145 – 10.4.83.146 | 10.4.83.147 |
| 230 | 10.4.83.148/30 | 10.4.83.149 – 10.4.83.150 | 10.4.83.151 |
| 231 | 10.4.83.152/30 | 10.4.83.153 – 10.4.83.154 | 10.4.83.155 |
| 232 | 10.4.83.156/30 | 10.4.83.157 – 10.4.83.158 | 10.4.83.159 |
| 233 | 10.4.83.160/30 | 10.4.83.161 – 10.4.83.162 | 10.4.83.163 |
| 234 | 10.4.83.164/30 | 10.4.83.165 – 10.4.83.166 | 10.4.83.167 |
| 235 | 10.4.83.168/30 | 10.4.83.169 – 10.4.83.170 | 10.4.83.171 |
| 236 | 10.4.83.172/30 | 10.4.83.173 – 10.4.83.174 | 10.4.83.175 |
| 237 | 10.4.83.176/30 | 10.4.83.177 – 10.4.83.178 | 10.4.83.179 |
| 238 | 10.4.83.180/30 | 10.4.83.181 – 10.4.83.182 | 10.4.83.183 |
| 239 | 10.4.83.184/30 | 10.4.83.185 – 10.4.83.186 | 10.4.83.187 |
| 240 | 10.4.83.188/30 | 10.4.83.189 – 10.4.83.190 | 10.4.83.191 |
| 241 | 10.4.83.192/30 | 10.4.83.193 – 10.4.83.194 | 10.4.83.195 |
| 242 | 10.4.83.196/30 | 10.4.83.197 – 10.4.83.198 | 10.4.83.199 |
| 243 | 10.4.83.200/30 | 10.4.83.201 – 10.4.83.202 | 10.4.83.203 |
| 244 | 10.4.83.204/30 | 10.4.83.205 – 10.4.83.206 | 10.4.83.207 |
| 245 | 10.4.83.208/30 | 10.4.83.209 – 10.4.83.210 | 10.4.83.211 |
| 246 | 10.4.83.212/30 | 10.4.83.213 – 10.4.83.214 | 10.4.83.215 |
| 247 | 10.4.83.216/30 | 10.4.83.217 – 10.4.83.218 | 10.4.83.219 |
| 248 | 10.4.83.220/30 | 10.4.83.221 – 10.4.83.222 | 10.4.83.223 |
| 249 | 10.4.83.224/30 | 10.4.83.225 – 10.4.83.226 | 10.4.83.227 |
| 250 | 10.4.83.228/30 | 10.4.83.229 – 10.4.83.230 | 10.4.83.231 |
| 251 | 10.4.83.232/30 | 10.4.83.233 – 10.4.83.234 | 10.4.83.235 |
| 252 | 10.4.83.236/30 | 10.4.83.237 – 10.4.83.238 | 10.4.83.239 |
| 253 | 10.4.83.240/30 | 10.4.83.241 – 10.4.83.242 | 10.4.83.243 |
| 254 | 10.4.83.244/30 | 10.4.83.245 – 10.4.83.246 | 10.4.83.247 |
| 255 | 10.4.83.248/30 | 10.4.83.249 – 10.4.83.250 | 10.4.83.251 |
| 256 | 10.4.83.252/30 | 10.4.83.253 – 10.4.83.254 | 10.4.83.255 |
showing 256 of 512
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 /21 |
|---|---|---|---|---|
| /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 | 1 |
| /22 | 255.255.252.0 | 1,024 | 1,022 | 2 split → |
| /23 | 255.255.254.0 | 512 | 510 | 4 split → |
| /24 | 255.255.255.0 | 256 | 254 | 8 split → |
| /25 | 255.255.255.128 | 128 | 126 | 16 split → |
| /26 | 255.255.255.192 | 64 | 62 | 32 split → |
| /27 | 255.255.255.224 | 32 | 30 | 64 split → |
| /28 | 255.255.255.240 | 16 | 14 | 128 split → |
| /29 | 255.255.255.248 | 8 | 6 | 256 split → |
| /30 | 255.255.255.252 | 4 | 2 | 512 split → |
| /31 | 255.255.255.254 | 2 | 2 | 1,024 split → |
| /32 | 255.255.255.255 | 1 | 1 | 2,048 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.