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)10.4.216.0/21
network10.4.216.0/21
broadcast10.4.223.255
first host10.4.216.1
last host10.4.223.254
subnet mask255.255.248.0
wildcard0.0.7.255
addresses2,048
usable hosts2,046
classA
ipcalc 10.4.216.0/21
address00001010.00000100.11011000.00000000
subnet mask11111111.11111111.11111000.00000000
network00001010.00000100.11011000.00000000
broadcast00001010.00000100.11011111.11111111
green = network part, grey = host part
hex0x0a04d800
decimal168089600
reverse dns0.216.4.10.in-addr.arpa
ipv4-mapped::ffff:a04:d800
/21 split into /30 · 512 subnets
close ×| # | network | host range | broadcast |
|---|---|---|---|
| 1 | 10.4.216.0/30 | 10.4.216.1 – 10.4.216.2 | 10.4.216.3 |
| 2 | 10.4.216.4/30 | 10.4.216.5 – 10.4.216.6 | 10.4.216.7 |
| 3 | 10.4.216.8/30 | 10.4.216.9 – 10.4.216.10 | 10.4.216.11 |
| 4 | 10.4.216.12/30 | 10.4.216.13 – 10.4.216.14 | 10.4.216.15 |
| 5 | 10.4.216.16/30 | 10.4.216.17 – 10.4.216.18 | 10.4.216.19 |
| 6 | 10.4.216.20/30 | 10.4.216.21 – 10.4.216.22 | 10.4.216.23 |
| 7 | 10.4.216.24/30 | 10.4.216.25 – 10.4.216.26 | 10.4.216.27 |
| 8 | 10.4.216.28/30 | 10.4.216.29 – 10.4.216.30 | 10.4.216.31 |
| 9 | 10.4.216.32/30 | 10.4.216.33 – 10.4.216.34 | 10.4.216.35 |
| 10 | 10.4.216.36/30 | 10.4.216.37 – 10.4.216.38 | 10.4.216.39 |
| 11 | 10.4.216.40/30 | 10.4.216.41 – 10.4.216.42 | 10.4.216.43 |
| 12 | 10.4.216.44/30 | 10.4.216.45 – 10.4.216.46 | 10.4.216.47 |
| 13 | 10.4.216.48/30 | 10.4.216.49 – 10.4.216.50 | 10.4.216.51 |
| 14 | 10.4.216.52/30 | 10.4.216.53 – 10.4.216.54 | 10.4.216.55 |
| 15 | 10.4.216.56/30 | 10.4.216.57 – 10.4.216.58 | 10.4.216.59 |
| 16 | 10.4.216.60/30 | 10.4.216.61 – 10.4.216.62 | 10.4.216.63 |
| 17 | 10.4.216.64/30 | 10.4.216.65 – 10.4.216.66 | 10.4.216.67 |
| 18 | 10.4.216.68/30 | 10.4.216.69 – 10.4.216.70 | 10.4.216.71 |
| 19 | 10.4.216.72/30 | 10.4.216.73 – 10.4.216.74 | 10.4.216.75 |
| 20 | 10.4.216.76/30 | 10.4.216.77 – 10.4.216.78 | 10.4.216.79 |
| 21 | 10.4.216.80/30 | 10.4.216.81 – 10.4.216.82 | 10.4.216.83 |
| 22 | 10.4.216.84/30 | 10.4.216.85 – 10.4.216.86 | 10.4.216.87 |
| 23 | 10.4.216.88/30 | 10.4.216.89 – 10.4.216.90 | 10.4.216.91 |
| 24 | 10.4.216.92/30 | 10.4.216.93 – 10.4.216.94 | 10.4.216.95 |
| 25 | 10.4.216.96/30 | 10.4.216.97 – 10.4.216.98 | 10.4.216.99 |
| 26 | 10.4.216.100/30 | 10.4.216.101 – 10.4.216.102 | 10.4.216.103 |
| 27 | 10.4.216.104/30 | 10.4.216.105 – 10.4.216.106 | 10.4.216.107 |
| 28 | 10.4.216.108/30 | 10.4.216.109 – 10.4.216.110 | 10.4.216.111 |
| 29 | 10.4.216.112/30 | 10.4.216.113 – 10.4.216.114 | 10.4.216.115 |
| 30 | 10.4.216.116/30 | 10.4.216.117 – 10.4.216.118 | 10.4.216.119 |
| 31 | 10.4.216.120/30 | 10.4.216.121 – 10.4.216.122 | 10.4.216.123 |
| 32 | 10.4.216.124/30 | 10.4.216.125 – 10.4.216.126 | 10.4.216.127 |
| 33 | 10.4.216.128/30 | 10.4.216.129 – 10.4.216.130 | 10.4.216.131 |
| 34 | 10.4.216.132/30 | 10.4.216.133 – 10.4.216.134 | 10.4.216.135 |
| 35 | 10.4.216.136/30 | 10.4.216.137 – 10.4.216.138 | 10.4.216.139 |
| 36 | 10.4.216.140/30 | 10.4.216.141 – 10.4.216.142 | 10.4.216.143 |
| 37 | 10.4.216.144/30 | 10.4.216.145 – 10.4.216.146 | 10.4.216.147 |
| 38 | 10.4.216.148/30 | 10.4.216.149 – 10.4.216.150 | 10.4.216.151 |
| 39 | 10.4.216.152/30 | 10.4.216.153 – 10.4.216.154 | 10.4.216.155 |
| 40 | 10.4.216.156/30 | 10.4.216.157 – 10.4.216.158 | 10.4.216.159 |
| 41 | 10.4.216.160/30 | 10.4.216.161 – 10.4.216.162 | 10.4.216.163 |
| 42 | 10.4.216.164/30 | 10.4.216.165 – 10.4.216.166 | 10.4.216.167 |
| 43 | 10.4.216.168/30 | 10.4.216.169 – 10.4.216.170 | 10.4.216.171 |
| 44 | 10.4.216.172/30 | 10.4.216.173 – 10.4.216.174 | 10.4.216.175 |
| 45 | 10.4.216.176/30 | 10.4.216.177 – 10.4.216.178 | 10.4.216.179 |
| 46 | 10.4.216.180/30 | 10.4.216.181 – 10.4.216.182 | 10.4.216.183 |
| 47 | 10.4.216.184/30 | 10.4.216.185 – 10.4.216.186 | 10.4.216.187 |
| 48 | 10.4.216.188/30 | 10.4.216.189 – 10.4.216.190 | 10.4.216.191 |
| 49 | 10.4.216.192/30 | 10.4.216.193 – 10.4.216.194 | 10.4.216.195 |
| 50 | 10.4.216.196/30 | 10.4.216.197 – 10.4.216.198 | 10.4.216.199 |
| 51 | 10.4.216.200/30 | 10.4.216.201 – 10.4.216.202 | 10.4.216.203 |
| 52 | 10.4.216.204/30 | 10.4.216.205 – 10.4.216.206 | 10.4.216.207 |
| 53 | 10.4.216.208/30 | 10.4.216.209 – 10.4.216.210 | 10.4.216.211 |
| 54 | 10.4.216.212/30 | 10.4.216.213 – 10.4.216.214 | 10.4.216.215 |
| 55 | 10.4.216.216/30 | 10.4.216.217 – 10.4.216.218 | 10.4.216.219 |
| 56 | 10.4.216.220/30 | 10.4.216.221 – 10.4.216.222 | 10.4.216.223 |
| 57 | 10.4.216.224/30 | 10.4.216.225 – 10.4.216.226 | 10.4.216.227 |
| 58 | 10.4.216.228/30 | 10.4.216.229 – 10.4.216.230 | 10.4.216.231 |
| 59 | 10.4.216.232/30 | 10.4.216.233 – 10.4.216.234 | 10.4.216.235 |
| 60 | 10.4.216.236/30 | 10.4.216.237 – 10.4.216.238 | 10.4.216.239 |
| 61 | 10.4.216.240/30 | 10.4.216.241 – 10.4.216.242 | 10.4.216.243 |
| 62 | 10.4.216.244/30 | 10.4.216.245 – 10.4.216.246 | 10.4.216.247 |
| 63 | 10.4.216.248/30 | 10.4.216.249 – 10.4.216.250 | 10.4.216.251 |
| 64 | 10.4.216.252/30 | 10.4.216.253 – 10.4.216.254 | 10.4.216.255 |
| 65 | 10.4.217.0/30 | 10.4.217.1 – 10.4.217.2 | 10.4.217.3 |
| 66 | 10.4.217.4/30 | 10.4.217.5 – 10.4.217.6 | 10.4.217.7 |
| 67 | 10.4.217.8/30 | 10.4.217.9 – 10.4.217.10 | 10.4.217.11 |
| 68 | 10.4.217.12/30 | 10.4.217.13 – 10.4.217.14 | 10.4.217.15 |
| 69 | 10.4.217.16/30 | 10.4.217.17 – 10.4.217.18 | 10.4.217.19 |
| 70 | 10.4.217.20/30 | 10.4.217.21 – 10.4.217.22 | 10.4.217.23 |
| 71 | 10.4.217.24/30 | 10.4.217.25 – 10.4.217.26 | 10.4.217.27 |
| 72 | 10.4.217.28/30 | 10.4.217.29 – 10.4.217.30 | 10.4.217.31 |
| 73 | 10.4.217.32/30 | 10.4.217.33 – 10.4.217.34 | 10.4.217.35 |
| 74 | 10.4.217.36/30 | 10.4.217.37 – 10.4.217.38 | 10.4.217.39 |
| 75 | 10.4.217.40/30 | 10.4.217.41 – 10.4.217.42 | 10.4.217.43 |
| 76 | 10.4.217.44/30 | 10.4.217.45 – 10.4.217.46 | 10.4.217.47 |
| 77 | 10.4.217.48/30 | 10.4.217.49 – 10.4.217.50 | 10.4.217.51 |
| 78 | 10.4.217.52/30 | 10.4.217.53 – 10.4.217.54 | 10.4.217.55 |
| 79 | 10.4.217.56/30 | 10.4.217.57 – 10.4.217.58 | 10.4.217.59 |
| 80 | 10.4.217.60/30 | 10.4.217.61 – 10.4.217.62 | 10.4.217.63 |
| 81 | 10.4.217.64/30 | 10.4.217.65 – 10.4.217.66 | 10.4.217.67 |
| 82 | 10.4.217.68/30 | 10.4.217.69 – 10.4.217.70 | 10.4.217.71 |
| 83 | 10.4.217.72/30 | 10.4.217.73 – 10.4.217.74 | 10.4.217.75 |
| 84 | 10.4.217.76/30 | 10.4.217.77 – 10.4.217.78 | 10.4.217.79 |
| 85 | 10.4.217.80/30 | 10.4.217.81 – 10.4.217.82 | 10.4.217.83 |
| 86 | 10.4.217.84/30 | 10.4.217.85 – 10.4.217.86 | 10.4.217.87 |
| 87 | 10.4.217.88/30 | 10.4.217.89 – 10.4.217.90 | 10.4.217.91 |
| 88 | 10.4.217.92/30 | 10.4.217.93 – 10.4.217.94 | 10.4.217.95 |
| 89 | 10.4.217.96/30 | 10.4.217.97 – 10.4.217.98 | 10.4.217.99 |
| 90 | 10.4.217.100/30 | 10.4.217.101 – 10.4.217.102 | 10.4.217.103 |
| 91 | 10.4.217.104/30 | 10.4.217.105 – 10.4.217.106 | 10.4.217.107 |
| 92 | 10.4.217.108/30 | 10.4.217.109 – 10.4.217.110 | 10.4.217.111 |
| 93 | 10.4.217.112/30 | 10.4.217.113 – 10.4.217.114 | 10.4.217.115 |
| 94 | 10.4.217.116/30 | 10.4.217.117 – 10.4.217.118 | 10.4.217.119 |
| 95 | 10.4.217.120/30 | 10.4.217.121 – 10.4.217.122 | 10.4.217.123 |
| 96 | 10.4.217.124/30 | 10.4.217.125 – 10.4.217.126 | 10.4.217.127 |
| 97 | 10.4.217.128/30 | 10.4.217.129 – 10.4.217.130 | 10.4.217.131 |
| 98 | 10.4.217.132/30 | 10.4.217.133 – 10.4.217.134 | 10.4.217.135 |
| 99 | 10.4.217.136/30 | 10.4.217.137 – 10.4.217.138 | 10.4.217.139 |
| 100 | 10.4.217.140/30 | 10.4.217.141 – 10.4.217.142 | 10.4.217.143 |
| 101 | 10.4.217.144/30 | 10.4.217.145 – 10.4.217.146 | 10.4.217.147 |
| 102 | 10.4.217.148/30 | 10.4.217.149 – 10.4.217.150 | 10.4.217.151 |
| 103 | 10.4.217.152/30 | 10.4.217.153 – 10.4.217.154 | 10.4.217.155 |
| 104 | 10.4.217.156/30 | 10.4.217.157 – 10.4.217.158 | 10.4.217.159 |
| 105 | 10.4.217.160/30 | 10.4.217.161 – 10.4.217.162 | 10.4.217.163 |
| 106 | 10.4.217.164/30 | 10.4.217.165 – 10.4.217.166 | 10.4.217.167 |
| 107 | 10.4.217.168/30 | 10.4.217.169 – 10.4.217.170 | 10.4.217.171 |
| 108 | 10.4.217.172/30 | 10.4.217.173 – 10.4.217.174 | 10.4.217.175 |
| 109 | 10.4.217.176/30 | 10.4.217.177 – 10.4.217.178 | 10.4.217.179 |
| 110 | 10.4.217.180/30 | 10.4.217.181 – 10.4.217.182 | 10.4.217.183 |
| 111 | 10.4.217.184/30 | 10.4.217.185 – 10.4.217.186 | 10.4.217.187 |
| 112 | 10.4.217.188/30 | 10.4.217.189 – 10.4.217.190 | 10.4.217.191 |
| 113 | 10.4.217.192/30 | 10.4.217.193 – 10.4.217.194 | 10.4.217.195 |
| 114 | 10.4.217.196/30 | 10.4.217.197 – 10.4.217.198 | 10.4.217.199 |
| 115 | 10.4.217.200/30 | 10.4.217.201 – 10.4.217.202 | 10.4.217.203 |
| 116 | 10.4.217.204/30 | 10.4.217.205 – 10.4.217.206 | 10.4.217.207 |
| 117 | 10.4.217.208/30 | 10.4.217.209 – 10.4.217.210 | 10.4.217.211 |
| 118 | 10.4.217.212/30 | 10.4.217.213 – 10.4.217.214 | 10.4.217.215 |
| 119 | 10.4.217.216/30 | 10.4.217.217 – 10.4.217.218 | 10.4.217.219 |
| 120 | 10.4.217.220/30 | 10.4.217.221 – 10.4.217.222 | 10.4.217.223 |
| 121 | 10.4.217.224/30 | 10.4.217.225 – 10.4.217.226 | 10.4.217.227 |
| 122 | 10.4.217.228/30 | 10.4.217.229 – 10.4.217.230 | 10.4.217.231 |
| 123 | 10.4.217.232/30 | 10.4.217.233 – 10.4.217.234 | 10.4.217.235 |
| 124 | 10.4.217.236/30 | 10.4.217.237 – 10.4.217.238 | 10.4.217.239 |
| 125 | 10.4.217.240/30 | 10.4.217.241 – 10.4.217.242 | 10.4.217.243 |
| 126 | 10.4.217.244/30 | 10.4.217.245 – 10.4.217.246 | 10.4.217.247 |
| 127 | 10.4.217.248/30 | 10.4.217.249 – 10.4.217.250 | 10.4.217.251 |
| 128 | 10.4.217.252/30 | 10.4.217.253 – 10.4.217.254 | 10.4.217.255 |
| 129 | 10.4.218.0/30 | 10.4.218.1 – 10.4.218.2 | 10.4.218.3 |
| 130 | 10.4.218.4/30 | 10.4.218.5 – 10.4.218.6 | 10.4.218.7 |
| 131 | 10.4.218.8/30 | 10.4.218.9 – 10.4.218.10 | 10.4.218.11 |
| 132 | 10.4.218.12/30 | 10.4.218.13 – 10.4.218.14 | 10.4.218.15 |
| 133 | 10.4.218.16/30 | 10.4.218.17 – 10.4.218.18 | 10.4.218.19 |
| 134 | 10.4.218.20/30 | 10.4.218.21 – 10.4.218.22 | 10.4.218.23 |
| 135 | 10.4.218.24/30 | 10.4.218.25 – 10.4.218.26 | 10.4.218.27 |
| 136 | 10.4.218.28/30 | 10.4.218.29 – 10.4.218.30 | 10.4.218.31 |
| 137 | 10.4.218.32/30 | 10.4.218.33 – 10.4.218.34 | 10.4.218.35 |
| 138 | 10.4.218.36/30 | 10.4.218.37 – 10.4.218.38 | 10.4.218.39 |
| 139 | 10.4.218.40/30 | 10.4.218.41 – 10.4.218.42 | 10.4.218.43 |
| 140 | 10.4.218.44/30 | 10.4.218.45 – 10.4.218.46 | 10.4.218.47 |
| 141 | 10.4.218.48/30 | 10.4.218.49 – 10.4.218.50 | 10.4.218.51 |
| 142 | 10.4.218.52/30 | 10.4.218.53 – 10.4.218.54 | 10.4.218.55 |
| 143 | 10.4.218.56/30 | 10.4.218.57 – 10.4.218.58 | 10.4.218.59 |
| 144 | 10.4.218.60/30 | 10.4.218.61 – 10.4.218.62 | 10.4.218.63 |
| 145 | 10.4.218.64/30 | 10.4.218.65 – 10.4.218.66 | 10.4.218.67 |
| 146 | 10.4.218.68/30 | 10.4.218.69 – 10.4.218.70 | 10.4.218.71 |
| 147 | 10.4.218.72/30 | 10.4.218.73 – 10.4.218.74 | 10.4.218.75 |
| 148 | 10.4.218.76/30 | 10.4.218.77 – 10.4.218.78 | 10.4.218.79 |
| 149 | 10.4.218.80/30 | 10.4.218.81 – 10.4.218.82 | 10.4.218.83 |
| 150 | 10.4.218.84/30 | 10.4.218.85 – 10.4.218.86 | 10.4.218.87 |
| 151 | 10.4.218.88/30 | 10.4.218.89 – 10.4.218.90 | 10.4.218.91 |
| 152 | 10.4.218.92/30 | 10.4.218.93 – 10.4.218.94 | 10.4.218.95 |
| 153 | 10.4.218.96/30 | 10.4.218.97 – 10.4.218.98 | 10.4.218.99 |
| 154 | 10.4.218.100/30 | 10.4.218.101 – 10.4.218.102 | 10.4.218.103 |
| 155 | 10.4.218.104/30 | 10.4.218.105 – 10.4.218.106 | 10.4.218.107 |
| 156 | 10.4.218.108/30 | 10.4.218.109 – 10.4.218.110 | 10.4.218.111 |
| 157 | 10.4.218.112/30 | 10.4.218.113 – 10.4.218.114 | 10.4.218.115 |
| 158 | 10.4.218.116/30 | 10.4.218.117 – 10.4.218.118 | 10.4.218.119 |
| 159 | 10.4.218.120/30 | 10.4.218.121 – 10.4.218.122 | 10.4.218.123 |
| 160 | 10.4.218.124/30 | 10.4.218.125 – 10.4.218.126 | 10.4.218.127 |
| 161 | 10.4.218.128/30 | 10.4.218.129 – 10.4.218.130 | 10.4.218.131 |
| 162 | 10.4.218.132/30 | 10.4.218.133 – 10.4.218.134 | 10.4.218.135 |
| 163 | 10.4.218.136/30 | 10.4.218.137 – 10.4.218.138 | 10.4.218.139 |
| 164 | 10.4.218.140/30 | 10.4.218.141 – 10.4.218.142 | 10.4.218.143 |
| 165 | 10.4.218.144/30 | 10.4.218.145 – 10.4.218.146 | 10.4.218.147 |
| 166 | 10.4.218.148/30 | 10.4.218.149 – 10.4.218.150 | 10.4.218.151 |
| 167 | 10.4.218.152/30 | 10.4.218.153 – 10.4.218.154 | 10.4.218.155 |
| 168 | 10.4.218.156/30 | 10.4.218.157 – 10.4.218.158 | 10.4.218.159 |
| 169 | 10.4.218.160/30 | 10.4.218.161 – 10.4.218.162 | 10.4.218.163 |
| 170 | 10.4.218.164/30 | 10.4.218.165 – 10.4.218.166 | 10.4.218.167 |
| 171 | 10.4.218.168/30 | 10.4.218.169 – 10.4.218.170 | 10.4.218.171 |
| 172 | 10.4.218.172/30 | 10.4.218.173 – 10.4.218.174 | 10.4.218.175 |
| 173 | 10.4.218.176/30 | 10.4.218.177 – 10.4.218.178 | 10.4.218.179 |
| 174 | 10.4.218.180/30 | 10.4.218.181 – 10.4.218.182 | 10.4.218.183 |
| 175 | 10.4.218.184/30 | 10.4.218.185 – 10.4.218.186 | 10.4.218.187 |
| 176 | 10.4.218.188/30 | 10.4.218.189 – 10.4.218.190 | 10.4.218.191 |
| 177 | 10.4.218.192/30 | 10.4.218.193 – 10.4.218.194 | 10.4.218.195 |
| 178 | 10.4.218.196/30 | 10.4.218.197 – 10.4.218.198 | 10.4.218.199 |
| 179 | 10.4.218.200/30 | 10.4.218.201 – 10.4.218.202 | 10.4.218.203 |
| 180 | 10.4.218.204/30 | 10.4.218.205 – 10.4.218.206 | 10.4.218.207 |
| 181 | 10.4.218.208/30 | 10.4.218.209 – 10.4.218.210 | 10.4.218.211 |
| 182 | 10.4.218.212/30 | 10.4.218.213 – 10.4.218.214 | 10.4.218.215 |
| 183 | 10.4.218.216/30 | 10.4.218.217 – 10.4.218.218 | 10.4.218.219 |
| 184 | 10.4.218.220/30 | 10.4.218.221 – 10.4.218.222 | 10.4.218.223 |
| 185 | 10.4.218.224/30 | 10.4.218.225 – 10.4.218.226 | 10.4.218.227 |
| 186 | 10.4.218.228/30 | 10.4.218.229 – 10.4.218.230 | 10.4.218.231 |
| 187 | 10.4.218.232/30 | 10.4.218.233 – 10.4.218.234 | 10.4.218.235 |
| 188 | 10.4.218.236/30 | 10.4.218.237 – 10.4.218.238 | 10.4.218.239 |
| 189 | 10.4.218.240/30 | 10.4.218.241 – 10.4.218.242 | 10.4.218.243 |
| 190 | 10.4.218.244/30 | 10.4.218.245 – 10.4.218.246 | 10.4.218.247 |
| 191 | 10.4.218.248/30 | 10.4.218.249 – 10.4.218.250 | 10.4.218.251 |
| 192 | 10.4.218.252/30 | 10.4.218.253 – 10.4.218.254 | 10.4.218.255 |
| 193 | 10.4.219.0/30 | 10.4.219.1 – 10.4.219.2 | 10.4.219.3 |
| 194 | 10.4.219.4/30 | 10.4.219.5 – 10.4.219.6 | 10.4.219.7 |
| 195 | 10.4.219.8/30 | 10.4.219.9 – 10.4.219.10 | 10.4.219.11 |
| 196 | 10.4.219.12/30 | 10.4.219.13 – 10.4.219.14 | 10.4.219.15 |
| 197 | 10.4.219.16/30 | 10.4.219.17 – 10.4.219.18 | 10.4.219.19 |
| 198 | 10.4.219.20/30 | 10.4.219.21 – 10.4.219.22 | 10.4.219.23 |
| 199 | 10.4.219.24/30 | 10.4.219.25 – 10.4.219.26 | 10.4.219.27 |
| 200 | 10.4.219.28/30 | 10.4.219.29 – 10.4.219.30 | 10.4.219.31 |
| 201 | 10.4.219.32/30 | 10.4.219.33 – 10.4.219.34 | 10.4.219.35 |
| 202 | 10.4.219.36/30 | 10.4.219.37 – 10.4.219.38 | 10.4.219.39 |
| 203 | 10.4.219.40/30 | 10.4.219.41 – 10.4.219.42 | 10.4.219.43 |
| 204 | 10.4.219.44/30 | 10.4.219.45 – 10.4.219.46 | 10.4.219.47 |
| 205 | 10.4.219.48/30 | 10.4.219.49 – 10.4.219.50 | 10.4.219.51 |
| 206 | 10.4.219.52/30 | 10.4.219.53 – 10.4.219.54 | 10.4.219.55 |
| 207 | 10.4.219.56/30 | 10.4.219.57 – 10.4.219.58 | 10.4.219.59 |
| 208 | 10.4.219.60/30 | 10.4.219.61 – 10.4.219.62 | 10.4.219.63 |
| 209 | 10.4.219.64/30 | 10.4.219.65 – 10.4.219.66 | 10.4.219.67 |
| 210 | 10.4.219.68/30 | 10.4.219.69 – 10.4.219.70 | 10.4.219.71 |
| 211 | 10.4.219.72/30 | 10.4.219.73 – 10.4.219.74 | 10.4.219.75 |
| 212 | 10.4.219.76/30 | 10.4.219.77 – 10.4.219.78 | 10.4.219.79 |
| 213 | 10.4.219.80/30 | 10.4.219.81 – 10.4.219.82 | 10.4.219.83 |
| 214 | 10.4.219.84/30 | 10.4.219.85 – 10.4.219.86 | 10.4.219.87 |
| 215 | 10.4.219.88/30 | 10.4.219.89 – 10.4.219.90 | 10.4.219.91 |
| 216 | 10.4.219.92/30 | 10.4.219.93 – 10.4.219.94 | 10.4.219.95 |
| 217 | 10.4.219.96/30 | 10.4.219.97 – 10.4.219.98 | 10.4.219.99 |
| 218 | 10.4.219.100/30 | 10.4.219.101 – 10.4.219.102 | 10.4.219.103 |
| 219 | 10.4.219.104/30 | 10.4.219.105 – 10.4.219.106 | 10.4.219.107 |
| 220 | 10.4.219.108/30 | 10.4.219.109 – 10.4.219.110 | 10.4.219.111 |
| 221 | 10.4.219.112/30 | 10.4.219.113 – 10.4.219.114 | 10.4.219.115 |
| 222 | 10.4.219.116/30 | 10.4.219.117 – 10.4.219.118 | 10.4.219.119 |
| 223 | 10.4.219.120/30 | 10.4.219.121 – 10.4.219.122 | 10.4.219.123 |
| 224 | 10.4.219.124/30 | 10.4.219.125 – 10.4.219.126 | 10.4.219.127 |
| 225 | 10.4.219.128/30 | 10.4.219.129 – 10.4.219.130 | 10.4.219.131 |
| 226 | 10.4.219.132/30 | 10.4.219.133 – 10.4.219.134 | 10.4.219.135 |
| 227 | 10.4.219.136/30 | 10.4.219.137 – 10.4.219.138 | 10.4.219.139 |
| 228 | 10.4.219.140/30 | 10.4.219.141 – 10.4.219.142 | 10.4.219.143 |
| 229 | 10.4.219.144/30 | 10.4.219.145 – 10.4.219.146 | 10.4.219.147 |
| 230 | 10.4.219.148/30 | 10.4.219.149 – 10.4.219.150 | 10.4.219.151 |
| 231 | 10.4.219.152/30 | 10.4.219.153 – 10.4.219.154 | 10.4.219.155 |
| 232 | 10.4.219.156/30 | 10.4.219.157 – 10.4.219.158 | 10.4.219.159 |
| 233 | 10.4.219.160/30 | 10.4.219.161 – 10.4.219.162 | 10.4.219.163 |
| 234 | 10.4.219.164/30 | 10.4.219.165 – 10.4.219.166 | 10.4.219.167 |
| 235 | 10.4.219.168/30 | 10.4.219.169 – 10.4.219.170 | 10.4.219.171 |
| 236 | 10.4.219.172/30 | 10.4.219.173 – 10.4.219.174 | 10.4.219.175 |
| 237 | 10.4.219.176/30 | 10.4.219.177 – 10.4.219.178 | 10.4.219.179 |
| 238 | 10.4.219.180/30 | 10.4.219.181 – 10.4.219.182 | 10.4.219.183 |
| 239 | 10.4.219.184/30 | 10.4.219.185 – 10.4.219.186 | 10.4.219.187 |
| 240 | 10.4.219.188/30 | 10.4.219.189 – 10.4.219.190 | 10.4.219.191 |
| 241 | 10.4.219.192/30 | 10.4.219.193 – 10.4.219.194 | 10.4.219.195 |
| 242 | 10.4.219.196/30 | 10.4.219.197 – 10.4.219.198 | 10.4.219.199 |
| 243 | 10.4.219.200/30 | 10.4.219.201 – 10.4.219.202 | 10.4.219.203 |
| 244 | 10.4.219.204/30 | 10.4.219.205 – 10.4.219.206 | 10.4.219.207 |
| 245 | 10.4.219.208/30 | 10.4.219.209 – 10.4.219.210 | 10.4.219.211 |
| 246 | 10.4.219.212/30 | 10.4.219.213 – 10.4.219.214 | 10.4.219.215 |
| 247 | 10.4.219.216/30 | 10.4.219.217 – 10.4.219.218 | 10.4.219.219 |
| 248 | 10.4.219.220/30 | 10.4.219.221 – 10.4.219.222 | 10.4.219.223 |
| 249 | 10.4.219.224/30 | 10.4.219.225 – 10.4.219.226 | 10.4.219.227 |
| 250 | 10.4.219.228/30 | 10.4.219.229 – 10.4.219.230 | 10.4.219.231 |
| 251 | 10.4.219.232/30 | 10.4.219.233 – 10.4.219.234 | 10.4.219.235 |
| 252 | 10.4.219.236/30 | 10.4.219.237 – 10.4.219.238 | 10.4.219.239 |
| 253 | 10.4.219.240/30 | 10.4.219.241 – 10.4.219.242 | 10.4.219.243 |
| 254 | 10.4.219.244/30 | 10.4.219.245 – 10.4.219.246 | 10.4.219.247 |
| 255 | 10.4.219.248/30 | 10.4.219.249 – 10.4.219.250 | 10.4.219.251 |
| 256 | 10.4.219.252/30 | 10.4.219.253 – 10.4.219.254 | 10.4.219.255 |
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.