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)10.6.240.0/21
network10.6.240.0/21
broadcast10.6.247.255
first host10.6.240.1
last host10.6.247.254
subnet mask255.255.248.0
wildcard0.0.7.255
addresses2,048
usable hosts2,046
classA
ipcalc 10.6.240.0/21
address00001010.00000110.11110000.00000000
subnet mask11111111.11111111.11111000.00000000
network00001010.00000110.11110000.00000000
broadcast00001010.00000110.11110111.11111111
green = network part, grey = host part
hex0x0a06f000
decimal168226816
reverse dns0.240.6.10.in-addr.arpa
ipv4-mapped::ffff:a06:f000
/21 split into /30 · 512 subnets
close ×| # | network | host range | broadcast |
|---|---|---|---|
| 1 | 10.6.240.0/30 | 10.6.240.1 – 10.6.240.2 | 10.6.240.3 |
| 2 | 10.6.240.4/30 | 10.6.240.5 – 10.6.240.6 | 10.6.240.7 |
| 3 | 10.6.240.8/30 | 10.6.240.9 – 10.6.240.10 | 10.6.240.11 |
| 4 | 10.6.240.12/30 | 10.6.240.13 – 10.6.240.14 | 10.6.240.15 |
| 5 | 10.6.240.16/30 | 10.6.240.17 – 10.6.240.18 | 10.6.240.19 |
| 6 | 10.6.240.20/30 | 10.6.240.21 – 10.6.240.22 | 10.6.240.23 |
| 7 | 10.6.240.24/30 | 10.6.240.25 – 10.6.240.26 | 10.6.240.27 |
| 8 | 10.6.240.28/30 | 10.6.240.29 – 10.6.240.30 | 10.6.240.31 |
| 9 | 10.6.240.32/30 | 10.6.240.33 – 10.6.240.34 | 10.6.240.35 |
| 10 | 10.6.240.36/30 | 10.6.240.37 – 10.6.240.38 | 10.6.240.39 |
| 11 | 10.6.240.40/30 | 10.6.240.41 – 10.6.240.42 | 10.6.240.43 |
| 12 | 10.6.240.44/30 | 10.6.240.45 – 10.6.240.46 | 10.6.240.47 |
| 13 | 10.6.240.48/30 | 10.6.240.49 – 10.6.240.50 | 10.6.240.51 |
| 14 | 10.6.240.52/30 | 10.6.240.53 – 10.6.240.54 | 10.6.240.55 |
| 15 | 10.6.240.56/30 | 10.6.240.57 – 10.6.240.58 | 10.6.240.59 |
| 16 | 10.6.240.60/30 | 10.6.240.61 – 10.6.240.62 | 10.6.240.63 |
| 17 | 10.6.240.64/30 | 10.6.240.65 – 10.6.240.66 | 10.6.240.67 |
| 18 | 10.6.240.68/30 | 10.6.240.69 – 10.6.240.70 | 10.6.240.71 |
| 19 | 10.6.240.72/30 | 10.6.240.73 – 10.6.240.74 | 10.6.240.75 |
| 20 | 10.6.240.76/30 | 10.6.240.77 – 10.6.240.78 | 10.6.240.79 |
| 21 | 10.6.240.80/30 | 10.6.240.81 – 10.6.240.82 | 10.6.240.83 |
| 22 | 10.6.240.84/30 | 10.6.240.85 – 10.6.240.86 | 10.6.240.87 |
| 23 | 10.6.240.88/30 | 10.6.240.89 – 10.6.240.90 | 10.6.240.91 |
| 24 | 10.6.240.92/30 | 10.6.240.93 – 10.6.240.94 | 10.6.240.95 |
| 25 | 10.6.240.96/30 | 10.6.240.97 – 10.6.240.98 | 10.6.240.99 |
| 26 | 10.6.240.100/30 | 10.6.240.101 – 10.6.240.102 | 10.6.240.103 |
| 27 | 10.6.240.104/30 | 10.6.240.105 – 10.6.240.106 | 10.6.240.107 |
| 28 | 10.6.240.108/30 | 10.6.240.109 – 10.6.240.110 | 10.6.240.111 |
| 29 | 10.6.240.112/30 | 10.6.240.113 – 10.6.240.114 | 10.6.240.115 |
| 30 | 10.6.240.116/30 | 10.6.240.117 – 10.6.240.118 | 10.6.240.119 |
| 31 | 10.6.240.120/30 | 10.6.240.121 – 10.6.240.122 | 10.6.240.123 |
| 32 | 10.6.240.124/30 | 10.6.240.125 – 10.6.240.126 | 10.6.240.127 |
| 33 | 10.6.240.128/30 | 10.6.240.129 – 10.6.240.130 | 10.6.240.131 |
| 34 | 10.6.240.132/30 | 10.6.240.133 – 10.6.240.134 | 10.6.240.135 |
| 35 | 10.6.240.136/30 | 10.6.240.137 – 10.6.240.138 | 10.6.240.139 |
| 36 | 10.6.240.140/30 | 10.6.240.141 – 10.6.240.142 | 10.6.240.143 |
| 37 | 10.6.240.144/30 | 10.6.240.145 – 10.6.240.146 | 10.6.240.147 |
| 38 | 10.6.240.148/30 | 10.6.240.149 – 10.6.240.150 | 10.6.240.151 |
| 39 | 10.6.240.152/30 | 10.6.240.153 – 10.6.240.154 | 10.6.240.155 |
| 40 | 10.6.240.156/30 | 10.6.240.157 – 10.6.240.158 | 10.6.240.159 |
| 41 | 10.6.240.160/30 | 10.6.240.161 – 10.6.240.162 | 10.6.240.163 |
| 42 | 10.6.240.164/30 | 10.6.240.165 – 10.6.240.166 | 10.6.240.167 |
| 43 | 10.6.240.168/30 | 10.6.240.169 – 10.6.240.170 | 10.6.240.171 |
| 44 | 10.6.240.172/30 | 10.6.240.173 – 10.6.240.174 | 10.6.240.175 |
| 45 | 10.6.240.176/30 | 10.6.240.177 – 10.6.240.178 | 10.6.240.179 |
| 46 | 10.6.240.180/30 | 10.6.240.181 – 10.6.240.182 | 10.6.240.183 |
| 47 | 10.6.240.184/30 | 10.6.240.185 – 10.6.240.186 | 10.6.240.187 |
| 48 | 10.6.240.188/30 | 10.6.240.189 – 10.6.240.190 | 10.6.240.191 |
| 49 | 10.6.240.192/30 | 10.6.240.193 – 10.6.240.194 | 10.6.240.195 |
| 50 | 10.6.240.196/30 | 10.6.240.197 – 10.6.240.198 | 10.6.240.199 |
| 51 | 10.6.240.200/30 | 10.6.240.201 – 10.6.240.202 | 10.6.240.203 |
| 52 | 10.6.240.204/30 | 10.6.240.205 – 10.6.240.206 | 10.6.240.207 |
| 53 | 10.6.240.208/30 | 10.6.240.209 – 10.6.240.210 | 10.6.240.211 |
| 54 | 10.6.240.212/30 | 10.6.240.213 – 10.6.240.214 | 10.6.240.215 |
| 55 | 10.6.240.216/30 | 10.6.240.217 – 10.6.240.218 | 10.6.240.219 |
| 56 | 10.6.240.220/30 | 10.6.240.221 – 10.6.240.222 | 10.6.240.223 |
| 57 | 10.6.240.224/30 | 10.6.240.225 – 10.6.240.226 | 10.6.240.227 |
| 58 | 10.6.240.228/30 | 10.6.240.229 – 10.6.240.230 | 10.6.240.231 |
| 59 | 10.6.240.232/30 | 10.6.240.233 – 10.6.240.234 | 10.6.240.235 |
| 60 | 10.6.240.236/30 | 10.6.240.237 – 10.6.240.238 | 10.6.240.239 |
| 61 | 10.6.240.240/30 | 10.6.240.241 – 10.6.240.242 | 10.6.240.243 |
| 62 | 10.6.240.244/30 | 10.6.240.245 – 10.6.240.246 | 10.6.240.247 |
| 63 | 10.6.240.248/30 | 10.6.240.249 – 10.6.240.250 | 10.6.240.251 |
| 64 | 10.6.240.252/30 | 10.6.240.253 – 10.6.240.254 | 10.6.240.255 |
| 65 | 10.6.241.0/30 | 10.6.241.1 – 10.6.241.2 | 10.6.241.3 |
| 66 | 10.6.241.4/30 | 10.6.241.5 – 10.6.241.6 | 10.6.241.7 |
| 67 | 10.6.241.8/30 | 10.6.241.9 – 10.6.241.10 | 10.6.241.11 |
| 68 | 10.6.241.12/30 | 10.6.241.13 – 10.6.241.14 | 10.6.241.15 |
| 69 | 10.6.241.16/30 | 10.6.241.17 – 10.6.241.18 | 10.6.241.19 |
| 70 | 10.6.241.20/30 | 10.6.241.21 – 10.6.241.22 | 10.6.241.23 |
| 71 | 10.6.241.24/30 | 10.6.241.25 – 10.6.241.26 | 10.6.241.27 |
| 72 | 10.6.241.28/30 | 10.6.241.29 – 10.6.241.30 | 10.6.241.31 |
| 73 | 10.6.241.32/30 | 10.6.241.33 – 10.6.241.34 | 10.6.241.35 |
| 74 | 10.6.241.36/30 | 10.6.241.37 – 10.6.241.38 | 10.6.241.39 |
| 75 | 10.6.241.40/30 | 10.6.241.41 – 10.6.241.42 | 10.6.241.43 |
| 76 | 10.6.241.44/30 | 10.6.241.45 – 10.6.241.46 | 10.6.241.47 |
| 77 | 10.6.241.48/30 | 10.6.241.49 – 10.6.241.50 | 10.6.241.51 |
| 78 | 10.6.241.52/30 | 10.6.241.53 – 10.6.241.54 | 10.6.241.55 |
| 79 | 10.6.241.56/30 | 10.6.241.57 – 10.6.241.58 | 10.6.241.59 |
| 80 | 10.6.241.60/30 | 10.6.241.61 – 10.6.241.62 | 10.6.241.63 |
| 81 | 10.6.241.64/30 | 10.6.241.65 – 10.6.241.66 | 10.6.241.67 |
| 82 | 10.6.241.68/30 | 10.6.241.69 – 10.6.241.70 | 10.6.241.71 |
| 83 | 10.6.241.72/30 | 10.6.241.73 – 10.6.241.74 | 10.6.241.75 |
| 84 | 10.6.241.76/30 | 10.6.241.77 – 10.6.241.78 | 10.6.241.79 |
| 85 | 10.6.241.80/30 | 10.6.241.81 – 10.6.241.82 | 10.6.241.83 |
| 86 | 10.6.241.84/30 | 10.6.241.85 – 10.6.241.86 | 10.6.241.87 |
| 87 | 10.6.241.88/30 | 10.6.241.89 – 10.6.241.90 | 10.6.241.91 |
| 88 | 10.6.241.92/30 | 10.6.241.93 – 10.6.241.94 | 10.6.241.95 |
| 89 | 10.6.241.96/30 | 10.6.241.97 – 10.6.241.98 | 10.6.241.99 |
| 90 | 10.6.241.100/30 | 10.6.241.101 – 10.6.241.102 | 10.6.241.103 |
| 91 | 10.6.241.104/30 | 10.6.241.105 – 10.6.241.106 | 10.6.241.107 |
| 92 | 10.6.241.108/30 | 10.6.241.109 – 10.6.241.110 | 10.6.241.111 |
| 93 | 10.6.241.112/30 | 10.6.241.113 – 10.6.241.114 | 10.6.241.115 |
| 94 | 10.6.241.116/30 | 10.6.241.117 – 10.6.241.118 | 10.6.241.119 |
| 95 | 10.6.241.120/30 | 10.6.241.121 – 10.6.241.122 | 10.6.241.123 |
| 96 | 10.6.241.124/30 | 10.6.241.125 – 10.6.241.126 | 10.6.241.127 |
| 97 | 10.6.241.128/30 | 10.6.241.129 – 10.6.241.130 | 10.6.241.131 |
| 98 | 10.6.241.132/30 | 10.6.241.133 – 10.6.241.134 | 10.6.241.135 |
| 99 | 10.6.241.136/30 | 10.6.241.137 – 10.6.241.138 | 10.6.241.139 |
| 100 | 10.6.241.140/30 | 10.6.241.141 – 10.6.241.142 | 10.6.241.143 |
| 101 | 10.6.241.144/30 | 10.6.241.145 – 10.6.241.146 | 10.6.241.147 |
| 102 | 10.6.241.148/30 | 10.6.241.149 – 10.6.241.150 | 10.6.241.151 |
| 103 | 10.6.241.152/30 | 10.6.241.153 – 10.6.241.154 | 10.6.241.155 |
| 104 | 10.6.241.156/30 | 10.6.241.157 – 10.6.241.158 | 10.6.241.159 |
| 105 | 10.6.241.160/30 | 10.6.241.161 – 10.6.241.162 | 10.6.241.163 |
| 106 | 10.6.241.164/30 | 10.6.241.165 – 10.6.241.166 | 10.6.241.167 |
| 107 | 10.6.241.168/30 | 10.6.241.169 – 10.6.241.170 | 10.6.241.171 |
| 108 | 10.6.241.172/30 | 10.6.241.173 – 10.6.241.174 | 10.6.241.175 |
| 109 | 10.6.241.176/30 | 10.6.241.177 – 10.6.241.178 | 10.6.241.179 |
| 110 | 10.6.241.180/30 | 10.6.241.181 – 10.6.241.182 | 10.6.241.183 |
| 111 | 10.6.241.184/30 | 10.6.241.185 – 10.6.241.186 | 10.6.241.187 |
| 112 | 10.6.241.188/30 | 10.6.241.189 – 10.6.241.190 | 10.6.241.191 |
| 113 | 10.6.241.192/30 | 10.6.241.193 – 10.6.241.194 | 10.6.241.195 |
| 114 | 10.6.241.196/30 | 10.6.241.197 – 10.6.241.198 | 10.6.241.199 |
| 115 | 10.6.241.200/30 | 10.6.241.201 – 10.6.241.202 | 10.6.241.203 |
| 116 | 10.6.241.204/30 | 10.6.241.205 – 10.6.241.206 | 10.6.241.207 |
| 117 | 10.6.241.208/30 | 10.6.241.209 – 10.6.241.210 | 10.6.241.211 |
| 118 | 10.6.241.212/30 | 10.6.241.213 – 10.6.241.214 | 10.6.241.215 |
| 119 | 10.6.241.216/30 | 10.6.241.217 – 10.6.241.218 | 10.6.241.219 |
| 120 | 10.6.241.220/30 | 10.6.241.221 – 10.6.241.222 | 10.6.241.223 |
| 121 | 10.6.241.224/30 | 10.6.241.225 – 10.6.241.226 | 10.6.241.227 |
| 122 | 10.6.241.228/30 | 10.6.241.229 – 10.6.241.230 | 10.6.241.231 |
| 123 | 10.6.241.232/30 | 10.6.241.233 – 10.6.241.234 | 10.6.241.235 |
| 124 | 10.6.241.236/30 | 10.6.241.237 – 10.6.241.238 | 10.6.241.239 |
| 125 | 10.6.241.240/30 | 10.6.241.241 – 10.6.241.242 | 10.6.241.243 |
| 126 | 10.6.241.244/30 | 10.6.241.245 – 10.6.241.246 | 10.6.241.247 |
| 127 | 10.6.241.248/30 | 10.6.241.249 – 10.6.241.250 | 10.6.241.251 |
| 128 | 10.6.241.252/30 | 10.6.241.253 – 10.6.241.254 | 10.6.241.255 |
| 129 | 10.6.242.0/30 | 10.6.242.1 – 10.6.242.2 | 10.6.242.3 |
| 130 | 10.6.242.4/30 | 10.6.242.5 – 10.6.242.6 | 10.6.242.7 |
| 131 | 10.6.242.8/30 | 10.6.242.9 – 10.6.242.10 | 10.6.242.11 |
| 132 | 10.6.242.12/30 | 10.6.242.13 – 10.6.242.14 | 10.6.242.15 |
| 133 | 10.6.242.16/30 | 10.6.242.17 – 10.6.242.18 | 10.6.242.19 |
| 134 | 10.6.242.20/30 | 10.6.242.21 – 10.6.242.22 | 10.6.242.23 |
| 135 | 10.6.242.24/30 | 10.6.242.25 – 10.6.242.26 | 10.6.242.27 |
| 136 | 10.6.242.28/30 | 10.6.242.29 – 10.6.242.30 | 10.6.242.31 |
| 137 | 10.6.242.32/30 | 10.6.242.33 – 10.6.242.34 | 10.6.242.35 |
| 138 | 10.6.242.36/30 | 10.6.242.37 – 10.6.242.38 | 10.6.242.39 |
| 139 | 10.6.242.40/30 | 10.6.242.41 – 10.6.242.42 | 10.6.242.43 |
| 140 | 10.6.242.44/30 | 10.6.242.45 – 10.6.242.46 | 10.6.242.47 |
| 141 | 10.6.242.48/30 | 10.6.242.49 – 10.6.242.50 | 10.6.242.51 |
| 142 | 10.6.242.52/30 | 10.6.242.53 – 10.6.242.54 | 10.6.242.55 |
| 143 | 10.6.242.56/30 | 10.6.242.57 – 10.6.242.58 | 10.6.242.59 |
| 144 | 10.6.242.60/30 | 10.6.242.61 – 10.6.242.62 | 10.6.242.63 |
| 145 | 10.6.242.64/30 | 10.6.242.65 – 10.6.242.66 | 10.6.242.67 |
| 146 | 10.6.242.68/30 | 10.6.242.69 – 10.6.242.70 | 10.6.242.71 |
| 147 | 10.6.242.72/30 | 10.6.242.73 – 10.6.242.74 | 10.6.242.75 |
| 148 | 10.6.242.76/30 | 10.6.242.77 – 10.6.242.78 | 10.6.242.79 |
| 149 | 10.6.242.80/30 | 10.6.242.81 – 10.6.242.82 | 10.6.242.83 |
| 150 | 10.6.242.84/30 | 10.6.242.85 – 10.6.242.86 | 10.6.242.87 |
| 151 | 10.6.242.88/30 | 10.6.242.89 – 10.6.242.90 | 10.6.242.91 |
| 152 | 10.6.242.92/30 | 10.6.242.93 – 10.6.242.94 | 10.6.242.95 |
| 153 | 10.6.242.96/30 | 10.6.242.97 – 10.6.242.98 | 10.6.242.99 |
| 154 | 10.6.242.100/30 | 10.6.242.101 – 10.6.242.102 | 10.6.242.103 |
| 155 | 10.6.242.104/30 | 10.6.242.105 – 10.6.242.106 | 10.6.242.107 |
| 156 | 10.6.242.108/30 | 10.6.242.109 – 10.6.242.110 | 10.6.242.111 |
| 157 | 10.6.242.112/30 | 10.6.242.113 – 10.6.242.114 | 10.6.242.115 |
| 158 | 10.6.242.116/30 | 10.6.242.117 – 10.6.242.118 | 10.6.242.119 |
| 159 | 10.6.242.120/30 | 10.6.242.121 – 10.6.242.122 | 10.6.242.123 |
| 160 | 10.6.242.124/30 | 10.6.242.125 – 10.6.242.126 | 10.6.242.127 |
| 161 | 10.6.242.128/30 | 10.6.242.129 – 10.6.242.130 | 10.6.242.131 |
| 162 | 10.6.242.132/30 | 10.6.242.133 – 10.6.242.134 | 10.6.242.135 |
| 163 | 10.6.242.136/30 | 10.6.242.137 – 10.6.242.138 | 10.6.242.139 |
| 164 | 10.6.242.140/30 | 10.6.242.141 – 10.6.242.142 | 10.6.242.143 |
| 165 | 10.6.242.144/30 | 10.6.242.145 – 10.6.242.146 | 10.6.242.147 |
| 166 | 10.6.242.148/30 | 10.6.242.149 – 10.6.242.150 | 10.6.242.151 |
| 167 | 10.6.242.152/30 | 10.6.242.153 – 10.6.242.154 | 10.6.242.155 |
| 168 | 10.6.242.156/30 | 10.6.242.157 – 10.6.242.158 | 10.6.242.159 |
| 169 | 10.6.242.160/30 | 10.6.242.161 – 10.6.242.162 | 10.6.242.163 |
| 170 | 10.6.242.164/30 | 10.6.242.165 – 10.6.242.166 | 10.6.242.167 |
| 171 | 10.6.242.168/30 | 10.6.242.169 – 10.6.242.170 | 10.6.242.171 |
| 172 | 10.6.242.172/30 | 10.6.242.173 – 10.6.242.174 | 10.6.242.175 |
| 173 | 10.6.242.176/30 | 10.6.242.177 – 10.6.242.178 | 10.6.242.179 |
| 174 | 10.6.242.180/30 | 10.6.242.181 – 10.6.242.182 | 10.6.242.183 |
| 175 | 10.6.242.184/30 | 10.6.242.185 – 10.6.242.186 | 10.6.242.187 |
| 176 | 10.6.242.188/30 | 10.6.242.189 – 10.6.242.190 | 10.6.242.191 |
| 177 | 10.6.242.192/30 | 10.6.242.193 – 10.6.242.194 | 10.6.242.195 |
| 178 | 10.6.242.196/30 | 10.6.242.197 – 10.6.242.198 | 10.6.242.199 |
| 179 | 10.6.242.200/30 | 10.6.242.201 – 10.6.242.202 | 10.6.242.203 |
| 180 | 10.6.242.204/30 | 10.6.242.205 – 10.6.242.206 | 10.6.242.207 |
| 181 | 10.6.242.208/30 | 10.6.242.209 – 10.6.242.210 | 10.6.242.211 |
| 182 | 10.6.242.212/30 | 10.6.242.213 – 10.6.242.214 | 10.6.242.215 |
| 183 | 10.6.242.216/30 | 10.6.242.217 – 10.6.242.218 | 10.6.242.219 |
| 184 | 10.6.242.220/30 | 10.6.242.221 – 10.6.242.222 | 10.6.242.223 |
| 185 | 10.6.242.224/30 | 10.6.242.225 – 10.6.242.226 | 10.6.242.227 |
| 186 | 10.6.242.228/30 | 10.6.242.229 – 10.6.242.230 | 10.6.242.231 |
| 187 | 10.6.242.232/30 | 10.6.242.233 – 10.6.242.234 | 10.6.242.235 |
| 188 | 10.6.242.236/30 | 10.6.242.237 – 10.6.242.238 | 10.6.242.239 |
| 189 | 10.6.242.240/30 | 10.6.242.241 – 10.6.242.242 | 10.6.242.243 |
| 190 | 10.6.242.244/30 | 10.6.242.245 – 10.6.242.246 | 10.6.242.247 |
| 191 | 10.6.242.248/30 | 10.6.242.249 – 10.6.242.250 | 10.6.242.251 |
| 192 | 10.6.242.252/30 | 10.6.242.253 – 10.6.242.254 | 10.6.242.255 |
| 193 | 10.6.243.0/30 | 10.6.243.1 – 10.6.243.2 | 10.6.243.3 |
| 194 | 10.6.243.4/30 | 10.6.243.5 – 10.6.243.6 | 10.6.243.7 |
| 195 | 10.6.243.8/30 | 10.6.243.9 – 10.6.243.10 | 10.6.243.11 |
| 196 | 10.6.243.12/30 | 10.6.243.13 – 10.6.243.14 | 10.6.243.15 |
| 197 | 10.6.243.16/30 | 10.6.243.17 – 10.6.243.18 | 10.6.243.19 |
| 198 | 10.6.243.20/30 | 10.6.243.21 – 10.6.243.22 | 10.6.243.23 |
| 199 | 10.6.243.24/30 | 10.6.243.25 – 10.6.243.26 | 10.6.243.27 |
| 200 | 10.6.243.28/30 | 10.6.243.29 – 10.6.243.30 | 10.6.243.31 |
| 201 | 10.6.243.32/30 | 10.6.243.33 – 10.6.243.34 | 10.6.243.35 |
| 202 | 10.6.243.36/30 | 10.6.243.37 – 10.6.243.38 | 10.6.243.39 |
| 203 | 10.6.243.40/30 | 10.6.243.41 – 10.6.243.42 | 10.6.243.43 |
| 204 | 10.6.243.44/30 | 10.6.243.45 – 10.6.243.46 | 10.6.243.47 |
| 205 | 10.6.243.48/30 | 10.6.243.49 – 10.6.243.50 | 10.6.243.51 |
| 206 | 10.6.243.52/30 | 10.6.243.53 – 10.6.243.54 | 10.6.243.55 |
| 207 | 10.6.243.56/30 | 10.6.243.57 – 10.6.243.58 | 10.6.243.59 |
| 208 | 10.6.243.60/30 | 10.6.243.61 – 10.6.243.62 | 10.6.243.63 |
| 209 | 10.6.243.64/30 | 10.6.243.65 – 10.6.243.66 | 10.6.243.67 |
| 210 | 10.6.243.68/30 | 10.6.243.69 – 10.6.243.70 | 10.6.243.71 |
| 211 | 10.6.243.72/30 | 10.6.243.73 – 10.6.243.74 | 10.6.243.75 |
| 212 | 10.6.243.76/30 | 10.6.243.77 – 10.6.243.78 | 10.6.243.79 |
| 213 | 10.6.243.80/30 | 10.6.243.81 – 10.6.243.82 | 10.6.243.83 |
| 214 | 10.6.243.84/30 | 10.6.243.85 – 10.6.243.86 | 10.6.243.87 |
| 215 | 10.6.243.88/30 | 10.6.243.89 – 10.6.243.90 | 10.6.243.91 |
| 216 | 10.6.243.92/30 | 10.6.243.93 – 10.6.243.94 | 10.6.243.95 |
| 217 | 10.6.243.96/30 | 10.6.243.97 – 10.6.243.98 | 10.6.243.99 |
| 218 | 10.6.243.100/30 | 10.6.243.101 – 10.6.243.102 | 10.6.243.103 |
| 219 | 10.6.243.104/30 | 10.6.243.105 – 10.6.243.106 | 10.6.243.107 |
| 220 | 10.6.243.108/30 | 10.6.243.109 – 10.6.243.110 | 10.6.243.111 |
| 221 | 10.6.243.112/30 | 10.6.243.113 – 10.6.243.114 | 10.6.243.115 |
| 222 | 10.6.243.116/30 | 10.6.243.117 – 10.6.243.118 | 10.6.243.119 |
| 223 | 10.6.243.120/30 | 10.6.243.121 – 10.6.243.122 | 10.6.243.123 |
| 224 | 10.6.243.124/30 | 10.6.243.125 – 10.6.243.126 | 10.6.243.127 |
| 225 | 10.6.243.128/30 | 10.6.243.129 – 10.6.243.130 | 10.6.243.131 |
| 226 | 10.6.243.132/30 | 10.6.243.133 – 10.6.243.134 | 10.6.243.135 |
| 227 | 10.6.243.136/30 | 10.6.243.137 – 10.6.243.138 | 10.6.243.139 |
| 228 | 10.6.243.140/30 | 10.6.243.141 – 10.6.243.142 | 10.6.243.143 |
| 229 | 10.6.243.144/30 | 10.6.243.145 – 10.6.243.146 | 10.6.243.147 |
| 230 | 10.6.243.148/30 | 10.6.243.149 – 10.6.243.150 | 10.6.243.151 |
| 231 | 10.6.243.152/30 | 10.6.243.153 – 10.6.243.154 | 10.6.243.155 |
| 232 | 10.6.243.156/30 | 10.6.243.157 – 10.6.243.158 | 10.6.243.159 |
| 233 | 10.6.243.160/30 | 10.6.243.161 – 10.6.243.162 | 10.6.243.163 |
| 234 | 10.6.243.164/30 | 10.6.243.165 – 10.6.243.166 | 10.6.243.167 |
| 235 | 10.6.243.168/30 | 10.6.243.169 – 10.6.243.170 | 10.6.243.171 |
| 236 | 10.6.243.172/30 | 10.6.243.173 – 10.6.243.174 | 10.6.243.175 |
| 237 | 10.6.243.176/30 | 10.6.243.177 – 10.6.243.178 | 10.6.243.179 |
| 238 | 10.6.243.180/30 | 10.6.243.181 – 10.6.243.182 | 10.6.243.183 |
| 239 | 10.6.243.184/30 | 10.6.243.185 – 10.6.243.186 | 10.6.243.187 |
| 240 | 10.6.243.188/30 | 10.6.243.189 – 10.6.243.190 | 10.6.243.191 |
| 241 | 10.6.243.192/30 | 10.6.243.193 – 10.6.243.194 | 10.6.243.195 |
| 242 | 10.6.243.196/30 | 10.6.243.197 – 10.6.243.198 | 10.6.243.199 |
| 243 | 10.6.243.200/30 | 10.6.243.201 – 10.6.243.202 | 10.6.243.203 |
| 244 | 10.6.243.204/30 | 10.6.243.205 – 10.6.243.206 | 10.6.243.207 |
| 245 | 10.6.243.208/30 | 10.6.243.209 – 10.6.243.210 | 10.6.243.211 |
| 246 | 10.6.243.212/30 | 10.6.243.213 – 10.6.243.214 | 10.6.243.215 |
| 247 | 10.6.243.216/30 | 10.6.243.217 – 10.6.243.218 | 10.6.243.219 |
| 248 | 10.6.243.220/30 | 10.6.243.221 – 10.6.243.222 | 10.6.243.223 |
| 249 | 10.6.243.224/30 | 10.6.243.225 – 10.6.243.226 | 10.6.243.227 |
| 250 | 10.6.243.228/30 | 10.6.243.229 – 10.6.243.230 | 10.6.243.231 |
| 251 | 10.6.243.232/30 | 10.6.243.233 – 10.6.243.234 | 10.6.243.235 |
| 252 | 10.6.243.236/30 | 10.6.243.237 – 10.6.243.238 | 10.6.243.239 |
| 253 | 10.6.243.240/30 | 10.6.243.241 – 10.6.243.242 | 10.6.243.243 |
| 254 | 10.6.243.244/30 | 10.6.243.245 – 10.6.243.246 | 10.6.243.247 |
| 255 | 10.6.243.248/30 | 10.6.243.249 – 10.6.243.250 | 10.6.243.251 |
| 256 | 10.6.243.252/30 | 10.6.243.253 – 10.6.243.254 | 10.6.243.255 |
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.