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 /29 · 256 subnets
close ×| # | network | host range | broadcast |
|---|---|---|---|
| 1 | 10.4.216.0/29 | 10.4.216.1 – 10.4.216.6 | 10.4.216.7 |
| 2 | 10.4.216.8/29 | 10.4.216.9 – 10.4.216.14 | 10.4.216.15 |
| 3 | 10.4.216.16/29 | 10.4.216.17 – 10.4.216.22 | 10.4.216.23 |
| 4 | 10.4.216.24/29 | 10.4.216.25 – 10.4.216.30 | 10.4.216.31 |
| 5 | 10.4.216.32/29 | 10.4.216.33 – 10.4.216.38 | 10.4.216.39 |
| 6 | 10.4.216.40/29 | 10.4.216.41 – 10.4.216.46 | 10.4.216.47 |
| 7 | 10.4.216.48/29 | 10.4.216.49 – 10.4.216.54 | 10.4.216.55 |
| 8 | 10.4.216.56/29 | 10.4.216.57 – 10.4.216.62 | 10.4.216.63 |
| 9 | 10.4.216.64/29 | 10.4.216.65 – 10.4.216.70 | 10.4.216.71 |
| 10 | 10.4.216.72/29 | 10.4.216.73 – 10.4.216.78 | 10.4.216.79 |
| 11 | 10.4.216.80/29 | 10.4.216.81 – 10.4.216.86 | 10.4.216.87 |
| 12 | 10.4.216.88/29 | 10.4.216.89 – 10.4.216.94 | 10.4.216.95 |
| 13 | 10.4.216.96/29 | 10.4.216.97 – 10.4.216.102 | 10.4.216.103 |
| 14 | 10.4.216.104/29 | 10.4.216.105 – 10.4.216.110 | 10.4.216.111 |
| 15 | 10.4.216.112/29 | 10.4.216.113 – 10.4.216.118 | 10.4.216.119 |
| 16 | 10.4.216.120/29 | 10.4.216.121 – 10.4.216.126 | 10.4.216.127 |
| 17 | 10.4.216.128/29 | 10.4.216.129 – 10.4.216.134 | 10.4.216.135 |
| 18 | 10.4.216.136/29 | 10.4.216.137 – 10.4.216.142 | 10.4.216.143 |
| 19 | 10.4.216.144/29 | 10.4.216.145 – 10.4.216.150 | 10.4.216.151 |
| 20 | 10.4.216.152/29 | 10.4.216.153 – 10.4.216.158 | 10.4.216.159 |
| 21 | 10.4.216.160/29 | 10.4.216.161 – 10.4.216.166 | 10.4.216.167 |
| 22 | 10.4.216.168/29 | 10.4.216.169 – 10.4.216.174 | 10.4.216.175 |
| 23 | 10.4.216.176/29 | 10.4.216.177 – 10.4.216.182 | 10.4.216.183 |
| 24 | 10.4.216.184/29 | 10.4.216.185 – 10.4.216.190 | 10.4.216.191 |
| 25 | 10.4.216.192/29 | 10.4.216.193 – 10.4.216.198 | 10.4.216.199 |
| 26 | 10.4.216.200/29 | 10.4.216.201 – 10.4.216.206 | 10.4.216.207 |
| 27 | 10.4.216.208/29 | 10.4.216.209 – 10.4.216.214 | 10.4.216.215 |
| 28 | 10.4.216.216/29 | 10.4.216.217 – 10.4.216.222 | 10.4.216.223 |
| 29 | 10.4.216.224/29 | 10.4.216.225 – 10.4.216.230 | 10.4.216.231 |
| 30 | 10.4.216.232/29 | 10.4.216.233 – 10.4.216.238 | 10.4.216.239 |
| 31 | 10.4.216.240/29 | 10.4.216.241 – 10.4.216.246 | 10.4.216.247 |
| 32 | 10.4.216.248/29 | 10.4.216.249 – 10.4.216.254 | 10.4.216.255 |
| 33 | 10.4.217.0/29 | 10.4.217.1 – 10.4.217.6 | 10.4.217.7 |
| 34 | 10.4.217.8/29 | 10.4.217.9 – 10.4.217.14 | 10.4.217.15 |
| 35 | 10.4.217.16/29 | 10.4.217.17 – 10.4.217.22 | 10.4.217.23 |
| 36 | 10.4.217.24/29 | 10.4.217.25 – 10.4.217.30 | 10.4.217.31 |
| 37 | 10.4.217.32/29 | 10.4.217.33 – 10.4.217.38 | 10.4.217.39 |
| 38 | 10.4.217.40/29 | 10.4.217.41 – 10.4.217.46 | 10.4.217.47 |
| 39 | 10.4.217.48/29 | 10.4.217.49 – 10.4.217.54 | 10.4.217.55 |
| 40 | 10.4.217.56/29 | 10.4.217.57 – 10.4.217.62 | 10.4.217.63 |
| 41 | 10.4.217.64/29 | 10.4.217.65 – 10.4.217.70 | 10.4.217.71 |
| 42 | 10.4.217.72/29 | 10.4.217.73 – 10.4.217.78 | 10.4.217.79 |
| 43 | 10.4.217.80/29 | 10.4.217.81 – 10.4.217.86 | 10.4.217.87 |
| 44 | 10.4.217.88/29 | 10.4.217.89 – 10.4.217.94 | 10.4.217.95 |
| 45 | 10.4.217.96/29 | 10.4.217.97 – 10.4.217.102 | 10.4.217.103 |
| 46 | 10.4.217.104/29 | 10.4.217.105 – 10.4.217.110 | 10.4.217.111 |
| 47 | 10.4.217.112/29 | 10.4.217.113 – 10.4.217.118 | 10.4.217.119 |
| 48 | 10.4.217.120/29 | 10.4.217.121 – 10.4.217.126 | 10.4.217.127 |
| 49 | 10.4.217.128/29 | 10.4.217.129 – 10.4.217.134 | 10.4.217.135 |
| 50 | 10.4.217.136/29 | 10.4.217.137 – 10.4.217.142 | 10.4.217.143 |
| 51 | 10.4.217.144/29 | 10.4.217.145 – 10.4.217.150 | 10.4.217.151 |
| 52 | 10.4.217.152/29 | 10.4.217.153 – 10.4.217.158 | 10.4.217.159 |
| 53 | 10.4.217.160/29 | 10.4.217.161 – 10.4.217.166 | 10.4.217.167 |
| 54 | 10.4.217.168/29 | 10.4.217.169 – 10.4.217.174 | 10.4.217.175 |
| 55 | 10.4.217.176/29 | 10.4.217.177 – 10.4.217.182 | 10.4.217.183 |
| 56 | 10.4.217.184/29 | 10.4.217.185 – 10.4.217.190 | 10.4.217.191 |
| 57 | 10.4.217.192/29 | 10.4.217.193 – 10.4.217.198 | 10.4.217.199 |
| 58 | 10.4.217.200/29 | 10.4.217.201 – 10.4.217.206 | 10.4.217.207 |
| 59 | 10.4.217.208/29 | 10.4.217.209 – 10.4.217.214 | 10.4.217.215 |
| 60 | 10.4.217.216/29 | 10.4.217.217 – 10.4.217.222 | 10.4.217.223 |
| 61 | 10.4.217.224/29 | 10.4.217.225 – 10.4.217.230 | 10.4.217.231 |
| 62 | 10.4.217.232/29 | 10.4.217.233 – 10.4.217.238 | 10.4.217.239 |
| 63 | 10.4.217.240/29 | 10.4.217.241 – 10.4.217.246 | 10.4.217.247 |
| 64 | 10.4.217.248/29 | 10.4.217.249 – 10.4.217.254 | 10.4.217.255 |
| 65 | 10.4.218.0/29 | 10.4.218.1 – 10.4.218.6 | 10.4.218.7 |
| 66 | 10.4.218.8/29 | 10.4.218.9 – 10.4.218.14 | 10.4.218.15 |
| 67 | 10.4.218.16/29 | 10.4.218.17 – 10.4.218.22 | 10.4.218.23 |
| 68 | 10.4.218.24/29 | 10.4.218.25 – 10.4.218.30 | 10.4.218.31 |
| 69 | 10.4.218.32/29 | 10.4.218.33 – 10.4.218.38 | 10.4.218.39 |
| 70 | 10.4.218.40/29 | 10.4.218.41 – 10.4.218.46 | 10.4.218.47 |
| 71 | 10.4.218.48/29 | 10.4.218.49 – 10.4.218.54 | 10.4.218.55 |
| 72 | 10.4.218.56/29 | 10.4.218.57 – 10.4.218.62 | 10.4.218.63 |
| 73 | 10.4.218.64/29 | 10.4.218.65 – 10.4.218.70 | 10.4.218.71 |
| 74 | 10.4.218.72/29 | 10.4.218.73 – 10.4.218.78 | 10.4.218.79 |
| 75 | 10.4.218.80/29 | 10.4.218.81 – 10.4.218.86 | 10.4.218.87 |
| 76 | 10.4.218.88/29 | 10.4.218.89 – 10.4.218.94 | 10.4.218.95 |
| 77 | 10.4.218.96/29 | 10.4.218.97 – 10.4.218.102 | 10.4.218.103 |
| 78 | 10.4.218.104/29 | 10.4.218.105 – 10.4.218.110 | 10.4.218.111 |
| 79 | 10.4.218.112/29 | 10.4.218.113 – 10.4.218.118 | 10.4.218.119 |
| 80 | 10.4.218.120/29 | 10.4.218.121 – 10.4.218.126 | 10.4.218.127 |
| 81 | 10.4.218.128/29 | 10.4.218.129 – 10.4.218.134 | 10.4.218.135 |
| 82 | 10.4.218.136/29 | 10.4.218.137 – 10.4.218.142 | 10.4.218.143 |
| 83 | 10.4.218.144/29 | 10.4.218.145 – 10.4.218.150 | 10.4.218.151 |
| 84 | 10.4.218.152/29 | 10.4.218.153 – 10.4.218.158 | 10.4.218.159 |
| 85 | 10.4.218.160/29 | 10.4.218.161 – 10.4.218.166 | 10.4.218.167 |
| 86 | 10.4.218.168/29 | 10.4.218.169 – 10.4.218.174 | 10.4.218.175 |
| 87 | 10.4.218.176/29 | 10.4.218.177 – 10.4.218.182 | 10.4.218.183 |
| 88 | 10.4.218.184/29 | 10.4.218.185 – 10.4.218.190 | 10.4.218.191 |
| 89 | 10.4.218.192/29 | 10.4.218.193 – 10.4.218.198 | 10.4.218.199 |
| 90 | 10.4.218.200/29 | 10.4.218.201 – 10.4.218.206 | 10.4.218.207 |
| 91 | 10.4.218.208/29 | 10.4.218.209 – 10.4.218.214 | 10.4.218.215 |
| 92 | 10.4.218.216/29 | 10.4.218.217 – 10.4.218.222 | 10.4.218.223 |
| 93 | 10.4.218.224/29 | 10.4.218.225 – 10.4.218.230 | 10.4.218.231 |
| 94 | 10.4.218.232/29 | 10.4.218.233 – 10.4.218.238 | 10.4.218.239 |
| 95 | 10.4.218.240/29 | 10.4.218.241 – 10.4.218.246 | 10.4.218.247 |
| 96 | 10.4.218.248/29 | 10.4.218.249 – 10.4.218.254 | 10.4.218.255 |
| 97 | 10.4.219.0/29 | 10.4.219.1 – 10.4.219.6 | 10.4.219.7 |
| 98 | 10.4.219.8/29 | 10.4.219.9 – 10.4.219.14 | 10.4.219.15 |
| 99 | 10.4.219.16/29 | 10.4.219.17 – 10.4.219.22 | 10.4.219.23 |
| 100 | 10.4.219.24/29 | 10.4.219.25 – 10.4.219.30 | 10.4.219.31 |
| 101 | 10.4.219.32/29 | 10.4.219.33 – 10.4.219.38 | 10.4.219.39 |
| 102 | 10.4.219.40/29 | 10.4.219.41 – 10.4.219.46 | 10.4.219.47 |
| 103 | 10.4.219.48/29 | 10.4.219.49 – 10.4.219.54 | 10.4.219.55 |
| 104 | 10.4.219.56/29 | 10.4.219.57 – 10.4.219.62 | 10.4.219.63 |
| 105 | 10.4.219.64/29 | 10.4.219.65 – 10.4.219.70 | 10.4.219.71 |
| 106 | 10.4.219.72/29 | 10.4.219.73 – 10.4.219.78 | 10.4.219.79 |
| 107 | 10.4.219.80/29 | 10.4.219.81 – 10.4.219.86 | 10.4.219.87 |
| 108 | 10.4.219.88/29 | 10.4.219.89 – 10.4.219.94 | 10.4.219.95 |
| 109 | 10.4.219.96/29 | 10.4.219.97 – 10.4.219.102 | 10.4.219.103 |
| 110 | 10.4.219.104/29 | 10.4.219.105 – 10.4.219.110 | 10.4.219.111 |
| 111 | 10.4.219.112/29 | 10.4.219.113 – 10.4.219.118 | 10.4.219.119 |
| 112 | 10.4.219.120/29 | 10.4.219.121 – 10.4.219.126 | 10.4.219.127 |
| 113 | 10.4.219.128/29 | 10.4.219.129 – 10.4.219.134 | 10.4.219.135 |
| 114 | 10.4.219.136/29 | 10.4.219.137 – 10.4.219.142 | 10.4.219.143 |
| 115 | 10.4.219.144/29 | 10.4.219.145 – 10.4.219.150 | 10.4.219.151 |
| 116 | 10.4.219.152/29 | 10.4.219.153 – 10.4.219.158 | 10.4.219.159 |
| 117 | 10.4.219.160/29 | 10.4.219.161 – 10.4.219.166 | 10.4.219.167 |
| 118 | 10.4.219.168/29 | 10.4.219.169 – 10.4.219.174 | 10.4.219.175 |
| 119 | 10.4.219.176/29 | 10.4.219.177 – 10.4.219.182 | 10.4.219.183 |
| 120 | 10.4.219.184/29 | 10.4.219.185 – 10.4.219.190 | 10.4.219.191 |
| 121 | 10.4.219.192/29 | 10.4.219.193 – 10.4.219.198 | 10.4.219.199 |
| 122 | 10.4.219.200/29 | 10.4.219.201 – 10.4.219.206 | 10.4.219.207 |
| 123 | 10.4.219.208/29 | 10.4.219.209 – 10.4.219.214 | 10.4.219.215 |
| 124 | 10.4.219.216/29 | 10.4.219.217 – 10.4.219.222 | 10.4.219.223 |
| 125 | 10.4.219.224/29 | 10.4.219.225 – 10.4.219.230 | 10.4.219.231 |
| 126 | 10.4.219.232/29 | 10.4.219.233 – 10.4.219.238 | 10.4.219.239 |
| 127 | 10.4.219.240/29 | 10.4.219.241 – 10.4.219.246 | 10.4.219.247 |
| 128 | 10.4.219.248/29 | 10.4.219.249 – 10.4.219.254 | 10.4.219.255 |
| 129 | 10.4.220.0/29 | 10.4.220.1 – 10.4.220.6 | 10.4.220.7 |
| 130 | 10.4.220.8/29 | 10.4.220.9 – 10.4.220.14 | 10.4.220.15 |
| 131 | 10.4.220.16/29 | 10.4.220.17 – 10.4.220.22 | 10.4.220.23 |
| 132 | 10.4.220.24/29 | 10.4.220.25 – 10.4.220.30 | 10.4.220.31 |
| 133 | 10.4.220.32/29 | 10.4.220.33 – 10.4.220.38 | 10.4.220.39 |
| 134 | 10.4.220.40/29 | 10.4.220.41 – 10.4.220.46 | 10.4.220.47 |
| 135 | 10.4.220.48/29 | 10.4.220.49 – 10.4.220.54 | 10.4.220.55 |
| 136 | 10.4.220.56/29 | 10.4.220.57 – 10.4.220.62 | 10.4.220.63 |
| 137 | 10.4.220.64/29 | 10.4.220.65 – 10.4.220.70 | 10.4.220.71 |
| 138 | 10.4.220.72/29 | 10.4.220.73 – 10.4.220.78 | 10.4.220.79 |
| 139 | 10.4.220.80/29 | 10.4.220.81 – 10.4.220.86 | 10.4.220.87 |
| 140 | 10.4.220.88/29 | 10.4.220.89 – 10.4.220.94 | 10.4.220.95 |
| 141 | 10.4.220.96/29 | 10.4.220.97 – 10.4.220.102 | 10.4.220.103 |
| 142 | 10.4.220.104/29 | 10.4.220.105 – 10.4.220.110 | 10.4.220.111 |
| 143 | 10.4.220.112/29 | 10.4.220.113 – 10.4.220.118 | 10.4.220.119 |
| 144 | 10.4.220.120/29 | 10.4.220.121 – 10.4.220.126 | 10.4.220.127 |
| 145 | 10.4.220.128/29 | 10.4.220.129 – 10.4.220.134 | 10.4.220.135 |
| 146 | 10.4.220.136/29 | 10.4.220.137 – 10.4.220.142 | 10.4.220.143 |
| 147 | 10.4.220.144/29 | 10.4.220.145 – 10.4.220.150 | 10.4.220.151 |
| 148 | 10.4.220.152/29 | 10.4.220.153 – 10.4.220.158 | 10.4.220.159 |
| 149 | 10.4.220.160/29 | 10.4.220.161 – 10.4.220.166 | 10.4.220.167 |
| 150 | 10.4.220.168/29 | 10.4.220.169 – 10.4.220.174 | 10.4.220.175 |
| 151 | 10.4.220.176/29 | 10.4.220.177 – 10.4.220.182 | 10.4.220.183 |
| 152 | 10.4.220.184/29 | 10.4.220.185 – 10.4.220.190 | 10.4.220.191 |
| 153 | 10.4.220.192/29 | 10.4.220.193 – 10.4.220.198 | 10.4.220.199 |
| 154 | 10.4.220.200/29 | 10.4.220.201 – 10.4.220.206 | 10.4.220.207 |
| 155 | 10.4.220.208/29 | 10.4.220.209 – 10.4.220.214 | 10.4.220.215 |
| 156 | 10.4.220.216/29 | 10.4.220.217 – 10.4.220.222 | 10.4.220.223 |
| 157 | 10.4.220.224/29 | 10.4.220.225 – 10.4.220.230 | 10.4.220.231 |
| 158 | 10.4.220.232/29 | 10.4.220.233 – 10.4.220.238 | 10.4.220.239 |
| 159 | 10.4.220.240/29 | 10.4.220.241 – 10.4.220.246 | 10.4.220.247 |
| 160 | 10.4.220.248/29 | 10.4.220.249 – 10.4.220.254 | 10.4.220.255 |
| 161 | 10.4.221.0/29 | 10.4.221.1 – 10.4.221.6 | 10.4.221.7 |
| 162 | 10.4.221.8/29 | 10.4.221.9 – 10.4.221.14 | 10.4.221.15 |
| 163 | 10.4.221.16/29 | 10.4.221.17 – 10.4.221.22 | 10.4.221.23 |
| 164 | 10.4.221.24/29 | 10.4.221.25 – 10.4.221.30 | 10.4.221.31 |
| 165 | 10.4.221.32/29 | 10.4.221.33 – 10.4.221.38 | 10.4.221.39 |
| 166 | 10.4.221.40/29 | 10.4.221.41 – 10.4.221.46 | 10.4.221.47 |
| 167 | 10.4.221.48/29 | 10.4.221.49 – 10.4.221.54 | 10.4.221.55 |
| 168 | 10.4.221.56/29 | 10.4.221.57 – 10.4.221.62 | 10.4.221.63 |
| 169 | 10.4.221.64/29 | 10.4.221.65 – 10.4.221.70 | 10.4.221.71 |
| 170 | 10.4.221.72/29 | 10.4.221.73 – 10.4.221.78 | 10.4.221.79 |
| 171 | 10.4.221.80/29 | 10.4.221.81 – 10.4.221.86 | 10.4.221.87 |
| 172 | 10.4.221.88/29 | 10.4.221.89 – 10.4.221.94 | 10.4.221.95 |
| 173 | 10.4.221.96/29 | 10.4.221.97 – 10.4.221.102 | 10.4.221.103 |
| 174 | 10.4.221.104/29 | 10.4.221.105 – 10.4.221.110 | 10.4.221.111 |
| 175 | 10.4.221.112/29 | 10.4.221.113 – 10.4.221.118 | 10.4.221.119 |
| 176 | 10.4.221.120/29 | 10.4.221.121 – 10.4.221.126 | 10.4.221.127 |
| 177 | 10.4.221.128/29 | 10.4.221.129 – 10.4.221.134 | 10.4.221.135 |
| 178 | 10.4.221.136/29 | 10.4.221.137 – 10.4.221.142 | 10.4.221.143 |
| 179 | 10.4.221.144/29 | 10.4.221.145 – 10.4.221.150 | 10.4.221.151 |
| 180 | 10.4.221.152/29 | 10.4.221.153 – 10.4.221.158 | 10.4.221.159 |
| 181 | 10.4.221.160/29 | 10.4.221.161 – 10.4.221.166 | 10.4.221.167 |
| 182 | 10.4.221.168/29 | 10.4.221.169 – 10.4.221.174 | 10.4.221.175 |
| 183 | 10.4.221.176/29 | 10.4.221.177 – 10.4.221.182 | 10.4.221.183 |
| 184 | 10.4.221.184/29 | 10.4.221.185 – 10.4.221.190 | 10.4.221.191 |
| 185 | 10.4.221.192/29 | 10.4.221.193 – 10.4.221.198 | 10.4.221.199 |
| 186 | 10.4.221.200/29 | 10.4.221.201 – 10.4.221.206 | 10.4.221.207 |
| 187 | 10.4.221.208/29 | 10.4.221.209 – 10.4.221.214 | 10.4.221.215 |
| 188 | 10.4.221.216/29 | 10.4.221.217 – 10.4.221.222 | 10.4.221.223 |
| 189 | 10.4.221.224/29 | 10.4.221.225 – 10.4.221.230 | 10.4.221.231 |
| 190 | 10.4.221.232/29 | 10.4.221.233 – 10.4.221.238 | 10.4.221.239 |
| 191 | 10.4.221.240/29 | 10.4.221.241 – 10.4.221.246 | 10.4.221.247 |
| 192 | 10.4.221.248/29 | 10.4.221.249 – 10.4.221.254 | 10.4.221.255 |
| 193 | 10.4.222.0/29 | 10.4.222.1 – 10.4.222.6 | 10.4.222.7 |
| 194 | 10.4.222.8/29 | 10.4.222.9 – 10.4.222.14 | 10.4.222.15 |
| 195 | 10.4.222.16/29 | 10.4.222.17 – 10.4.222.22 | 10.4.222.23 |
| 196 | 10.4.222.24/29 | 10.4.222.25 – 10.4.222.30 | 10.4.222.31 |
| 197 | 10.4.222.32/29 | 10.4.222.33 – 10.4.222.38 | 10.4.222.39 |
| 198 | 10.4.222.40/29 | 10.4.222.41 – 10.4.222.46 | 10.4.222.47 |
| 199 | 10.4.222.48/29 | 10.4.222.49 – 10.4.222.54 | 10.4.222.55 |
| 200 | 10.4.222.56/29 | 10.4.222.57 – 10.4.222.62 | 10.4.222.63 |
| 201 | 10.4.222.64/29 | 10.4.222.65 – 10.4.222.70 | 10.4.222.71 |
| 202 | 10.4.222.72/29 | 10.4.222.73 – 10.4.222.78 | 10.4.222.79 |
| 203 | 10.4.222.80/29 | 10.4.222.81 – 10.4.222.86 | 10.4.222.87 |
| 204 | 10.4.222.88/29 | 10.4.222.89 – 10.4.222.94 | 10.4.222.95 |
| 205 | 10.4.222.96/29 | 10.4.222.97 – 10.4.222.102 | 10.4.222.103 |
| 206 | 10.4.222.104/29 | 10.4.222.105 – 10.4.222.110 | 10.4.222.111 |
| 207 | 10.4.222.112/29 | 10.4.222.113 – 10.4.222.118 | 10.4.222.119 |
| 208 | 10.4.222.120/29 | 10.4.222.121 – 10.4.222.126 | 10.4.222.127 |
| 209 | 10.4.222.128/29 | 10.4.222.129 – 10.4.222.134 | 10.4.222.135 |
| 210 | 10.4.222.136/29 | 10.4.222.137 – 10.4.222.142 | 10.4.222.143 |
| 211 | 10.4.222.144/29 | 10.4.222.145 – 10.4.222.150 | 10.4.222.151 |
| 212 | 10.4.222.152/29 | 10.4.222.153 – 10.4.222.158 | 10.4.222.159 |
| 213 | 10.4.222.160/29 | 10.4.222.161 – 10.4.222.166 | 10.4.222.167 |
| 214 | 10.4.222.168/29 | 10.4.222.169 – 10.4.222.174 | 10.4.222.175 |
| 215 | 10.4.222.176/29 | 10.4.222.177 – 10.4.222.182 | 10.4.222.183 |
| 216 | 10.4.222.184/29 | 10.4.222.185 – 10.4.222.190 | 10.4.222.191 |
| 217 | 10.4.222.192/29 | 10.4.222.193 – 10.4.222.198 | 10.4.222.199 |
| 218 | 10.4.222.200/29 | 10.4.222.201 – 10.4.222.206 | 10.4.222.207 |
| 219 | 10.4.222.208/29 | 10.4.222.209 – 10.4.222.214 | 10.4.222.215 |
| 220 | 10.4.222.216/29 | 10.4.222.217 – 10.4.222.222 | 10.4.222.223 |
| 221 | 10.4.222.224/29 | 10.4.222.225 – 10.4.222.230 | 10.4.222.231 |
| 222 | 10.4.222.232/29 | 10.4.222.233 – 10.4.222.238 | 10.4.222.239 |
| 223 | 10.4.222.240/29 | 10.4.222.241 – 10.4.222.246 | 10.4.222.247 |
| 224 | 10.4.222.248/29 | 10.4.222.249 – 10.4.222.254 | 10.4.222.255 |
| 225 | 10.4.223.0/29 | 10.4.223.1 – 10.4.223.6 | 10.4.223.7 |
| 226 | 10.4.223.8/29 | 10.4.223.9 – 10.4.223.14 | 10.4.223.15 |
| 227 | 10.4.223.16/29 | 10.4.223.17 – 10.4.223.22 | 10.4.223.23 |
| 228 | 10.4.223.24/29 | 10.4.223.25 – 10.4.223.30 | 10.4.223.31 |
| 229 | 10.4.223.32/29 | 10.4.223.33 – 10.4.223.38 | 10.4.223.39 |
| 230 | 10.4.223.40/29 | 10.4.223.41 – 10.4.223.46 | 10.4.223.47 |
| 231 | 10.4.223.48/29 | 10.4.223.49 – 10.4.223.54 | 10.4.223.55 |
| 232 | 10.4.223.56/29 | 10.4.223.57 – 10.4.223.62 | 10.4.223.63 |
| 233 | 10.4.223.64/29 | 10.4.223.65 – 10.4.223.70 | 10.4.223.71 |
| 234 | 10.4.223.72/29 | 10.4.223.73 – 10.4.223.78 | 10.4.223.79 |
| 235 | 10.4.223.80/29 | 10.4.223.81 – 10.4.223.86 | 10.4.223.87 |
| 236 | 10.4.223.88/29 | 10.4.223.89 – 10.4.223.94 | 10.4.223.95 |
| 237 | 10.4.223.96/29 | 10.4.223.97 – 10.4.223.102 | 10.4.223.103 |
| 238 | 10.4.223.104/29 | 10.4.223.105 – 10.4.223.110 | 10.4.223.111 |
| 239 | 10.4.223.112/29 | 10.4.223.113 – 10.4.223.118 | 10.4.223.119 |
| 240 | 10.4.223.120/29 | 10.4.223.121 – 10.4.223.126 | 10.4.223.127 |
| 241 | 10.4.223.128/29 | 10.4.223.129 – 10.4.223.134 | 10.4.223.135 |
| 242 | 10.4.223.136/29 | 10.4.223.137 – 10.4.223.142 | 10.4.223.143 |
| 243 | 10.4.223.144/29 | 10.4.223.145 – 10.4.223.150 | 10.4.223.151 |
| 244 | 10.4.223.152/29 | 10.4.223.153 – 10.4.223.158 | 10.4.223.159 |
| 245 | 10.4.223.160/29 | 10.4.223.161 – 10.4.223.166 | 10.4.223.167 |
| 246 | 10.4.223.168/29 | 10.4.223.169 – 10.4.223.174 | 10.4.223.175 |
| 247 | 10.4.223.176/29 | 10.4.223.177 – 10.4.223.182 | 10.4.223.183 |
| 248 | 10.4.223.184/29 | 10.4.223.185 – 10.4.223.190 | 10.4.223.191 |
| 249 | 10.4.223.192/29 | 10.4.223.193 – 10.4.223.198 | 10.4.223.199 |
| 250 | 10.4.223.200/29 | 10.4.223.201 – 10.4.223.206 | 10.4.223.207 |
| 251 | 10.4.223.208/29 | 10.4.223.209 – 10.4.223.214 | 10.4.223.215 |
| 252 | 10.4.223.216/29 | 10.4.223.217 – 10.4.223.222 | 10.4.223.223 |
| 253 | 10.4.223.224/29 | 10.4.223.225 – 10.4.223.230 | 10.4.223.231 |
| 254 | 10.4.223.232/29 | 10.4.223.233 – 10.4.223.238 | 10.4.223.239 |
| 255 | 10.4.223.240/29 | 10.4.223.241 – 10.4.223.246 | 10.4.223.247 |
| 256 | 10.4.223.248/29 | 10.4.223.249 – 10.4.223.254 | 10.4.223.255 |
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 /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.