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)10.6.64.0/21
network10.6.64.0/21
broadcast10.6.71.255
first host10.6.64.1
last host10.6.71.254
subnet mask255.255.248.0
wildcard0.0.7.255
addresses2,048
usable hosts2,046
classA
ipcalc 10.6.64.0/21
address00001010.00000110.01000000.00000000
subnet mask11111111.11111111.11111000.00000000
network00001010.00000110.01000000.00000000
broadcast00001010.00000110.01000111.11111111
green = network part, grey = host part
hex0x0a064000
decimal168181760
reverse dns0.64.6.10.in-addr.arpa
ipv4-mapped::ffff:a06:4000
/21 split into /31 · 1,024 subnets
close ×| # | network | host range | broadcast |
|---|---|---|---|
| 1 | 10.6.64.0/31 | 10.6.64.0 – 10.6.64.1 | 10.6.64.1 |
| 2 | 10.6.64.2/31 | 10.6.64.2 – 10.6.64.3 | 10.6.64.3 |
| 3 | 10.6.64.4/31 | 10.6.64.4 – 10.6.64.5 | 10.6.64.5 |
| 4 | 10.6.64.6/31 | 10.6.64.6 – 10.6.64.7 | 10.6.64.7 |
| 5 | 10.6.64.8/31 | 10.6.64.8 – 10.6.64.9 | 10.6.64.9 |
| 6 | 10.6.64.10/31 | 10.6.64.10 – 10.6.64.11 | 10.6.64.11 |
| 7 | 10.6.64.12/31 | 10.6.64.12 – 10.6.64.13 | 10.6.64.13 |
| 8 | 10.6.64.14/31 | 10.6.64.14 – 10.6.64.15 | 10.6.64.15 |
| 9 | 10.6.64.16/31 | 10.6.64.16 – 10.6.64.17 | 10.6.64.17 |
| 10 | 10.6.64.18/31 | 10.6.64.18 – 10.6.64.19 | 10.6.64.19 |
| 11 | 10.6.64.20/31 | 10.6.64.20 – 10.6.64.21 | 10.6.64.21 |
| 12 | 10.6.64.22/31 | 10.6.64.22 – 10.6.64.23 | 10.6.64.23 |
| 13 | 10.6.64.24/31 | 10.6.64.24 – 10.6.64.25 | 10.6.64.25 |
| 14 | 10.6.64.26/31 | 10.6.64.26 – 10.6.64.27 | 10.6.64.27 |
| 15 | 10.6.64.28/31 | 10.6.64.28 – 10.6.64.29 | 10.6.64.29 |
| 16 | 10.6.64.30/31 | 10.6.64.30 – 10.6.64.31 | 10.6.64.31 |
| 17 | 10.6.64.32/31 | 10.6.64.32 – 10.6.64.33 | 10.6.64.33 |
| 18 | 10.6.64.34/31 | 10.6.64.34 – 10.6.64.35 | 10.6.64.35 |
| 19 | 10.6.64.36/31 | 10.6.64.36 – 10.6.64.37 | 10.6.64.37 |
| 20 | 10.6.64.38/31 | 10.6.64.38 – 10.6.64.39 | 10.6.64.39 |
| 21 | 10.6.64.40/31 | 10.6.64.40 – 10.6.64.41 | 10.6.64.41 |
| 22 | 10.6.64.42/31 | 10.6.64.42 – 10.6.64.43 | 10.6.64.43 |
| 23 | 10.6.64.44/31 | 10.6.64.44 – 10.6.64.45 | 10.6.64.45 |
| 24 | 10.6.64.46/31 | 10.6.64.46 – 10.6.64.47 | 10.6.64.47 |
| 25 | 10.6.64.48/31 | 10.6.64.48 – 10.6.64.49 | 10.6.64.49 |
| 26 | 10.6.64.50/31 | 10.6.64.50 – 10.6.64.51 | 10.6.64.51 |
| 27 | 10.6.64.52/31 | 10.6.64.52 – 10.6.64.53 | 10.6.64.53 |
| 28 | 10.6.64.54/31 | 10.6.64.54 – 10.6.64.55 | 10.6.64.55 |
| 29 | 10.6.64.56/31 | 10.6.64.56 – 10.6.64.57 | 10.6.64.57 |
| 30 | 10.6.64.58/31 | 10.6.64.58 – 10.6.64.59 | 10.6.64.59 |
| 31 | 10.6.64.60/31 | 10.6.64.60 – 10.6.64.61 | 10.6.64.61 |
| 32 | 10.6.64.62/31 | 10.6.64.62 – 10.6.64.63 | 10.6.64.63 |
| 33 | 10.6.64.64/31 | 10.6.64.64 – 10.6.64.65 | 10.6.64.65 |
| 34 | 10.6.64.66/31 | 10.6.64.66 – 10.6.64.67 | 10.6.64.67 |
| 35 | 10.6.64.68/31 | 10.6.64.68 – 10.6.64.69 | 10.6.64.69 |
| 36 | 10.6.64.70/31 | 10.6.64.70 – 10.6.64.71 | 10.6.64.71 |
| 37 | 10.6.64.72/31 | 10.6.64.72 – 10.6.64.73 | 10.6.64.73 |
| 38 | 10.6.64.74/31 | 10.6.64.74 – 10.6.64.75 | 10.6.64.75 |
| 39 | 10.6.64.76/31 | 10.6.64.76 – 10.6.64.77 | 10.6.64.77 |
| 40 | 10.6.64.78/31 | 10.6.64.78 – 10.6.64.79 | 10.6.64.79 |
| 41 | 10.6.64.80/31 | 10.6.64.80 – 10.6.64.81 | 10.6.64.81 |
| 42 | 10.6.64.82/31 | 10.6.64.82 – 10.6.64.83 | 10.6.64.83 |
| 43 | 10.6.64.84/31 | 10.6.64.84 – 10.6.64.85 | 10.6.64.85 |
| 44 | 10.6.64.86/31 | 10.6.64.86 – 10.6.64.87 | 10.6.64.87 |
| 45 | 10.6.64.88/31 | 10.6.64.88 – 10.6.64.89 | 10.6.64.89 |
| 46 | 10.6.64.90/31 | 10.6.64.90 – 10.6.64.91 | 10.6.64.91 |
| 47 | 10.6.64.92/31 | 10.6.64.92 – 10.6.64.93 | 10.6.64.93 |
| 48 | 10.6.64.94/31 | 10.6.64.94 – 10.6.64.95 | 10.6.64.95 |
| 49 | 10.6.64.96/31 | 10.6.64.96 – 10.6.64.97 | 10.6.64.97 |
| 50 | 10.6.64.98/31 | 10.6.64.98 – 10.6.64.99 | 10.6.64.99 |
| 51 | 10.6.64.100/31 | 10.6.64.100 – 10.6.64.101 | 10.6.64.101 |
| 52 | 10.6.64.102/31 | 10.6.64.102 – 10.6.64.103 | 10.6.64.103 |
| 53 | 10.6.64.104/31 | 10.6.64.104 – 10.6.64.105 | 10.6.64.105 |
| 54 | 10.6.64.106/31 | 10.6.64.106 – 10.6.64.107 | 10.6.64.107 |
| 55 | 10.6.64.108/31 | 10.6.64.108 – 10.6.64.109 | 10.6.64.109 |
| 56 | 10.6.64.110/31 | 10.6.64.110 – 10.6.64.111 | 10.6.64.111 |
| 57 | 10.6.64.112/31 | 10.6.64.112 – 10.6.64.113 | 10.6.64.113 |
| 58 | 10.6.64.114/31 | 10.6.64.114 – 10.6.64.115 | 10.6.64.115 |
| 59 | 10.6.64.116/31 | 10.6.64.116 – 10.6.64.117 | 10.6.64.117 |
| 60 | 10.6.64.118/31 | 10.6.64.118 – 10.6.64.119 | 10.6.64.119 |
| 61 | 10.6.64.120/31 | 10.6.64.120 – 10.6.64.121 | 10.6.64.121 |
| 62 | 10.6.64.122/31 | 10.6.64.122 – 10.6.64.123 | 10.6.64.123 |
| 63 | 10.6.64.124/31 | 10.6.64.124 – 10.6.64.125 | 10.6.64.125 |
| 64 | 10.6.64.126/31 | 10.6.64.126 – 10.6.64.127 | 10.6.64.127 |
| 65 | 10.6.64.128/31 | 10.6.64.128 – 10.6.64.129 | 10.6.64.129 |
| 66 | 10.6.64.130/31 | 10.6.64.130 – 10.6.64.131 | 10.6.64.131 |
| 67 | 10.6.64.132/31 | 10.6.64.132 – 10.6.64.133 | 10.6.64.133 |
| 68 | 10.6.64.134/31 | 10.6.64.134 – 10.6.64.135 | 10.6.64.135 |
| 69 | 10.6.64.136/31 | 10.6.64.136 – 10.6.64.137 | 10.6.64.137 |
| 70 | 10.6.64.138/31 | 10.6.64.138 – 10.6.64.139 | 10.6.64.139 |
| 71 | 10.6.64.140/31 | 10.6.64.140 – 10.6.64.141 | 10.6.64.141 |
| 72 | 10.6.64.142/31 | 10.6.64.142 – 10.6.64.143 | 10.6.64.143 |
| 73 | 10.6.64.144/31 | 10.6.64.144 – 10.6.64.145 | 10.6.64.145 |
| 74 | 10.6.64.146/31 | 10.6.64.146 – 10.6.64.147 | 10.6.64.147 |
| 75 | 10.6.64.148/31 | 10.6.64.148 – 10.6.64.149 | 10.6.64.149 |
| 76 | 10.6.64.150/31 | 10.6.64.150 – 10.6.64.151 | 10.6.64.151 |
| 77 | 10.6.64.152/31 | 10.6.64.152 – 10.6.64.153 | 10.6.64.153 |
| 78 | 10.6.64.154/31 | 10.6.64.154 – 10.6.64.155 | 10.6.64.155 |
| 79 | 10.6.64.156/31 | 10.6.64.156 – 10.6.64.157 | 10.6.64.157 |
| 80 | 10.6.64.158/31 | 10.6.64.158 – 10.6.64.159 | 10.6.64.159 |
| 81 | 10.6.64.160/31 | 10.6.64.160 – 10.6.64.161 | 10.6.64.161 |
| 82 | 10.6.64.162/31 | 10.6.64.162 – 10.6.64.163 | 10.6.64.163 |
| 83 | 10.6.64.164/31 | 10.6.64.164 – 10.6.64.165 | 10.6.64.165 |
| 84 | 10.6.64.166/31 | 10.6.64.166 – 10.6.64.167 | 10.6.64.167 |
| 85 | 10.6.64.168/31 | 10.6.64.168 – 10.6.64.169 | 10.6.64.169 |
| 86 | 10.6.64.170/31 | 10.6.64.170 – 10.6.64.171 | 10.6.64.171 |
| 87 | 10.6.64.172/31 | 10.6.64.172 – 10.6.64.173 | 10.6.64.173 |
| 88 | 10.6.64.174/31 | 10.6.64.174 – 10.6.64.175 | 10.6.64.175 |
| 89 | 10.6.64.176/31 | 10.6.64.176 – 10.6.64.177 | 10.6.64.177 |
| 90 | 10.6.64.178/31 | 10.6.64.178 – 10.6.64.179 | 10.6.64.179 |
| 91 | 10.6.64.180/31 | 10.6.64.180 – 10.6.64.181 | 10.6.64.181 |
| 92 | 10.6.64.182/31 | 10.6.64.182 – 10.6.64.183 | 10.6.64.183 |
| 93 | 10.6.64.184/31 | 10.6.64.184 – 10.6.64.185 | 10.6.64.185 |
| 94 | 10.6.64.186/31 | 10.6.64.186 – 10.6.64.187 | 10.6.64.187 |
| 95 | 10.6.64.188/31 | 10.6.64.188 – 10.6.64.189 | 10.6.64.189 |
| 96 | 10.6.64.190/31 | 10.6.64.190 – 10.6.64.191 | 10.6.64.191 |
| 97 | 10.6.64.192/31 | 10.6.64.192 – 10.6.64.193 | 10.6.64.193 |
| 98 | 10.6.64.194/31 | 10.6.64.194 – 10.6.64.195 | 10.6.64.195 |
| 99 | 10.6.64.196/31 | 10.6.64.196 – 10.6.64.197 | 10.6.64.197 |
| 100 | 10.6.64.198/31 | 10.6.64.198 – 10.6.64.199 | 10.6.64.199 |
| 101 | 10.6.64.200/31 | 10.6.64.200 – 10.6.64.201 | 10.6.64.201 |
| 102 | 10.6.64.202/31 | 10.6.64.202 – 10.6.64.203 | 10.6.64.203 |
| 103 | 10.6.64.204/31 | 10.6.64.204 – 10.6.64.205 | 10.6.64.205 |
| 104 | 10.6.64.206/31 | 10.6.64.206 – 10.6.64.207 | 10.6.64.207 |
| 105 | 10.6.64.208/31 | 10.6.64.208 – 10.6.64.209 | 10.6.64.209 |
| 106 | 10.6.64.210/31 | 10.6.64.210 – 10.6.64.211 | 10.6.64.211 |
| 107 | 10.6.64.212/31 | 10.6.64.212 – 10.6.64.213 | 10.6.64.213 |
| 108 | 10.6.64.214/31 | 10.6.64.214 – 10.6.64.215 | 10.6.64.215 |
| 109 | 10.6.64.216/31 | 10.6.64.216 – 10.6.64.217 | 10.6.64.217 |
| 110 | 10.6.64.218/31 | 10.6.64.218 – 10.6.64.219 | 10.6.64.219 |
| 111 | 10.6.64.220/31 | 10.6.64.220 – 10.6.64.221 | 10.6.64.221 |
| 112 | 10.6.64.222/31 | 10.6.64.222 – 10.6.64.223 | 10.6.64.223 |
| 113 | 10.6.64.224/31 | 10.6.64.224 – 10.6.64.225 | 10.6.64.225 |
| 114 | 10.6.64.226/31 | 10.6.64.226 – 10.6.64.227 | 10.6.64.227 |
| 115 | 10.6.64.228/31 | 10.6.64.228 – 10.6.64.229 | 10.6.64.229 |
| 116 | 10.6.64.230/31 | 10.6.64.230 – 10.6.64.231 | 10.6.64.231 |
| 117 | 10.6.64.232/31 | 10.6.64.232 – 10.6.64.233 | 10.6.64.233 |
| 118 | 10.6.64.234/31 | 10.6.64.234 – 10.6.64.235 | 10.6.64.235 |
| 119 | 10.6.64.236/31 | 10.6.64.236 – 10.6.64.237 | 10.6.64.237 |
| 120 | 10.6.64.238/31 | 10.6.64.238 – 10.6.64.239 | 10.6.64.239 |
| 121 | 10.6.64.240/31 | 10.6.64.240 – 10.6.64.241 | 10.6.64.241 |
| 122 | 10.6.64.242/31 | 10.6.64.242 – 10.6.64.243 | 10.6.64.243 |
| 123 | 10.6.64.244/31 | 10.6.64.244 – 10.6.64.245 | 10.6.64.245 |
| 124 | 10.6.64.246/31 | 10.6.64.246 – 10.6.64.247 | 10.6.64.247 |
| 125 | 10.6.64.248/31 | 10.6.64.248 – 10.6.64.249 | 10.6.64.249 |
| 126 | 10.6.64.250/31 | 10.6.64.250 – 10.6.64.251 | 10.6.64.251 |
| 127 | 10.6.64.252/31 | 10.6.64.252 – 10.6.64.253 | 10.6.64.253 |
| 128 | 10.6.64.254/31 | 10.6.64.254 – 10.6.64.255 | 10.6.64.255 |
| 129 | 10.6.65.0/31 | 10.6.65.0 – 10.6.65.1 | 10.6.65.1 |
| 130 | 10.6.65.2/31 | 10.6.65.2 – 10.6.65.3 | 10.6.65.3 |
| 131 | 10.6.65.4/31 | 10.6.65.4 – 10.6.65.5 | 10.6.65.5 |
| 132 | 10.6.65.6/31 | 10.6.65.6 – 10.6.65.7 | 10.6.65.7 |
| 133 | 10.6.65.8/31 | 10.6.65.8 – 10.6.65.9 | 10.6.65.9 |
| 134 | 10.6.65.10/31 | 10.6.65.10 – 10.6.65.11 | 10.6.65.11 |
| 135 | 10.6.65.12/31 | 10.6.65.12 – 10.6.65.13 | 10.6.65.13 |
| 136 | 10.6.65.14/31 | 10.6.65.14 – 10.6.65.15 | 10.6.65.15 |
| 137 | 10.6.65.16/31 | 10.6.65.16 – 10.6.65.17 | 10.6.65.17 |
| 138 | 10.6.65.18/31 | 10.6.65.18 – 10.6.65.19 | 10.6.65.19 |
| 139 | 10.6.65.20/31 | 10.6.65.20 – 10.6.65.21 | 10.6.65.21 |
| 140 | 10.6.65.22/31 | 10.6.65.22 – 10.6.65.23 | 10.6.65.23 |
| 141 | 10.6.65.24/31 | 10.6.65.24 – 10.6.65.25 | 10.6.65.25 |
| 142 | 10.6.65.26/31 | 10.6.65.26 – 10.6.65.27 | 10.6.65.27 |
| 143 | 10.6.65.28/31 | 10.6.65.28 – 10.6.65.29 | 10.6.65.29 |
| 144 | 10.6.65.30/31 | 10.6.65.30 – 10.6.65.31 | 10.6.65.31 |
| 145 | 10.6.65.32/31 | 10.6.65.32 – 10.6.65.33 | 10.6.65.33 |
| 146 | 10.6.65.34/31 | 10.6.65.34 – 10.6.65.35 | 10.6.65.35 |
| 147 | 10.6.65.36/31 | 10.6.65.36 – 10.6.65.37 | 10.6.65.37 |
| 148 | 10.6.65.38/31 | 10.6.65.38 – 10.6.65.39 | 10.6.65.39 |
| 149 | 10.6.65.40/31 | 10.6.65.40 – 10.6.65.41 | 10.6.65.41 |
| 150 | 10.6.65.42/31 | 10.6.65.42 – 10.6.65.43 | 10.6.65.43 |
| 151 | 10.6.65.44/31 | 10.6.65.44 – 10.6.65.45 | 10.6.65.45 |
| 152 | 10.6.65.46/31 | 10.6.65.46 – 10.6.65.47 | 10.6.65.47 |
| 153 | 10.6.65.48/31 | 10.6.65.48 – 10.6.65.49 | 10.6.65.49 |
| 154 | 10.6.65.50/31 | 10.6.65.50 – 10.6.65.51 | 10.6.65.51 |
| 155 | 10.6.65.52/31 | 10.6.65.52 – 10.6.65.53 | 10.6.65.53 |
| 156 | 10.6.65.54/31 | 10.6.65.54 – 10.6.65.55 | 10.6.65.55 |
| 157 | 10.6.65.56/31 | 10.6.65.56 – 10.6.65.57 | 10.6.65.57 |
| 158 | 10.6.65.58/31 | 10.6.65.58 – 10.6.65.59 | 10.6.65.59 |
| 159 | 10.6.65.60/31 | 10.6.65.60 – 10.6.65.61 | 10.6.65.61 |
| 160 | 10.6.65.62/31 | 10.6.65.62 – 10.6.65.63 | 10.6.65.63 |
| 161 | 10.6.65.64/31 | 10.6.65.64 – 10.6.65.65 | 10.6.65.65 |
| 162 | 10.6.65.66/31 | 10.6.65.66 – 10.6.65.67 | 10.6.65.67 |
| 163 | 10.6.65.68/31 | 10.6.65.68 – 10.6.65.69 | 10.6.65.69 |
| 164 | 10.6.65.70/31 | 10.6.65.70 – 10.6.65.71 | 10.6.65.71 |
| 165 | 10.6.65.72/31 | 10.6.65.72 – 10.6.65.73 | 10.6.65.73 |
| 166 | 10.6.65.74/31 | 10.6.65.74 – 10.6.65.75 | 10.6.65.75 |
| 167 | 10.6.65.76/31 | 10.6.65.76 – 10.6.65.77 | 10.6.65.77 |
| 168 | 10.6.65.78/31 | 10.6.65.78 – 10.6.65.79 | 10.6.65.79 |
| 169 | 10.6.65.80/31 | 10.6.65.80 – 10.6.65.81 | 10.6.65.81 |
| 170 | 10.6.65.82/31 | 10.6.65.82 – 10.6.65.83 | 10.6.65.83 |
| 171 | 10.6.65.84/31 | 10.6.65.84 – 10.6.65.85 | 10.6.65.85 |
| 172 | 10.6.65.86/31 | 10.6.65.86 – 10.6.65.87 | 10.6.65.87 |
| 173 | 10.6.65.88/31 | 10.6.65.88 – 10.6.65.89 | 10.6.65.89 |
| 174 | 10.6.65.90/31 | 10.6.65.90 – 10.6.65.91 | 10.6.65.91 |
| 175 | 10.6.65.92/31 | 10.6.65.92 – 10.6.65.93 | 10.6.65.93 |
| 176 | 10.6.65.94/31 | 10.6.65.94 – 10.6.65.95 | 10.6.65.95 |
| 177 | 10.6.65.96/31 | 10.6.65.96 – 10.6.65.97 | 10.6.65.97 |
| 178 | 10.6.65.98/31 | 10.6.65.98 – 10.6.65.99 | 10.6.65.99 |
| 179 | 10.6.65.100/31 | 10.6.65.100 – 10.6.65.101 | 10.6.65.101 |
| 180 | 10.6.65.102/31 | 10.6.65.102 – 10.6.65.103 | 10.6.65.103 |
| 181 | 10.6.65.104/31 | 10.6.65.104 – 10.6.65.105 | 10.6.65.105 |
| 182 | 10.6.65.106/31 | 10.6.65.106 – 10.6.65.107 | 10.6.65.107 |
| 183 | 10.6.65.108/31 | 10.6.65.108 – 10.6.65.109 | 10.6.65.109 |
| 184 | 10.6.65.110/31 | 10.6.65.110 – 10.6.65.111 | 10.6.65.111 |
| 185 | 10.6.65.112/31 | 10.6.65.112 – 10.6.65.113 | 10.6.65.113 |
| 186 | 10.6.65.114/31 | 10.6.65.114 – 10.6.65.115 | 10.6.65.115 |
| 187 | 10.6.65.116/31 | 10.6.65.116 – 10.6.65.117 | 10.6.65.117 |
| 188 | 10.6.65.118/31 | 10.6.65.118 – 10.6.65.119 | 10.6.65.119 |
| 189 | 10.6.65.120/31 | 10.6.65.120 – 10.6.65.121 | 10.6.65.121 |
| 190 | 10.6.65.122/31 | 10.6.65.122 – 10.6.65.123 | 10.6.65.123 |
| 191 | 10.6.65.124/31 | 10.6.65.124 – 10.6.65.125 | 10.6.65.125 |
| 192 | 10.6.65.126/31 | 10.6.65.126 – 10.6.65.127 | 10.6.65.127 |
| 193 | 10.6.65.128/31 | 10.6.65.128 – 10.6.65.129 | 10.6.65.129 |
| 194 | 10.6.65.130/31 | 10.6.65.130 – 10.6.65.131 | 10.6.65.131 |
| 195 | 10.6.65.132/31 | 10.6.65.132 – 10.6.65.133 | 10.6.65.133 |
| 196 | 10.6.65.134/31 | 10.6.65.134 – 10.6.65.135 | 10.6.65.135 |
| 197 | 10.6.65.136/31 | 10.6.65.136 – 10.6.65.137 | 10.6.65.137 |
| 198 | 10.6.65.138/31 | 10.6.65.138 – 10.6.65.139 | 10.6.65.139 |
| 199 | 10.6.65.140/31 | 10.6.65.140 – 10.6.65.141 | 10.6.65.141 |
| 200 | 10.6.65.142/31 | 10.6.65.142 – 10.6.65.143 | 10.6.65.143 |
| 201 | 10.6.65.144/31 | 10.6.65.144 – 10.6.65.145 | 10.6.65.145 |
| 202 | 10.6.65.146/31 | 10.6.65.146 – 10.6.65.147 | 10.6.65.147 |
| 203 | 10.6.65.148/31 | 10.6.65.148 – 10.6.65.149 | 10.6.65.149 |
| 204 | 10.6.65.150/31 | 10.6.65.150 – 10.6.65.151 | 10.6.65.151 |
| 205 | 10.6.65.152/31 | 10.6.65.152 – 10.6.65.153 | 10.6.65.153 |
| 206 | 10.6.65.154/31 | 10.6.65.154 – 10.6.65.155 | 10.6.65.155 |
| 207 | 10.6.65.156/31 | 10.6.65.156 – 10.6.65.157 | 10.6.65.157 |
| 208 | 10.6.65.158/31 | 10.6.65.158 – 10.6.65.159 | 10.6.65.159 |
| 209 | 10.6.65.160/31 | 10.6.65.160 – 10.6.65.161 | 10.6.65.161 |
| 210 | 10.6.65.162/31 | 10.6.65.162 – 10.6.65.163 | 10.6.65.163 |
| 211 | 10.6.65.164/31 | 10.6.65.164 – 10.6.65.165 | 10.6.65.165 |
| 212 | 10.6.65.166/31 | 10.6.65.166 – 10.6.65.167 | 10.6.65.167 |
| 213 | 10.6.65.168/31 | 10.6.65.168 – 10.6.65.169 | 10.6.65.169 |
| 214 | 10.6.65.170/31 | 10.6.65.170 – 10.6.65.171 | 10.6.65.171 |
| 215 | 10.6.65.172/31 | 10.6.65.172 – 10.6.65.173 | 10.6.65.173 |
| 216 | 10.6.65.174/31 | 10.6.65.174 – 10.6.65.175 | 10.6.65.175 |
| 217 | 10.6.65.176/31 | 10.6.65.176 – 10.6.65.177 | 10.6.65.177 |
| 218 | 10.6.65.178/31 | 10.6.65.178 – 10.6.65.179 | 10.6.65.179 |
| 219 | 10.6.65.180/31 | 10.6.65.180 – 10.6.65.181 | 10.6.65.181 |
| 220 | 10.6.65.182/31 | 10.6.65.182 – 10.6.65.183 | 10.6.65.183 |
| 221 | 10.6.65.184/31 | 10.6.65.184 – 10.6.65.185 | 10.6.65.185 |
| 222 | 10.6.65.186/31 | 10.6.65.186 – 10.6.65.187 | 10.6.65.187 |
| 223 | 10.6.65.188/31 | 10.6.65.188 – 10.6.65.189 | 10.6.65.189 |
| 224 | 10.6.65.190/31 | 10.6.65.190 – 10.6.65.191 | 10.6.65.191 |
| 225 | 10.6.65.192/31 | 10.6.65.192 – 10.6.65.193 | 10.6.65.193 |
| 226 | 10.6.65.194/31 | 10.6.65.194 – 10.6.65.195 | 10.6.65.195 |
| 227 | 10.6.65.196/31 | 10.6.65.196 – 10.6.65.197 | 10.6.65.197 |
| 228 | 10.6.65.198/31 | 10.6.65.198 – 10.6.65.199 | 10.6.65.199 |
| 229 | 10.6.65.200/31 | 10.6.65.200 – 10.6.65.201 | 10.6.65.201 |
| 230 | 10.6.65.202/31 | 10.6.65.202 – 10.6.65.203 | 10.6.65.203 |
| 231 | 10.6.65.204/31 | 10.6.65.204 – 10.6.65.205 | 10.6.65.205 |
| 232 | 10.6.65.206/31 | 10.6.65.206 – 10.6.65.207 | 10.6.65.207 |
| 233 | 10.6.65.208/31 | 10.6.65.208 – 10.6.65.209 | 10.6.65.209 |
| 234 | 10.6.65.210/31 | 10.6.65.210 – 10.6.65.211 | 10.6.65.211 |
| 235 | 10.6.65.212/31 | 10.6.65.212 – 10.6.65.213 | 10.6.65.213 |
| 236 | 10.6.65.214/31 | 10.6.65.214 – 10.6.65.215 | 10.6.65.215 |
| 237 | 10.6.65.216/31 | 10.6.65.216 – 10.6.65.217 | 10.6.65.217 |
| 238 | 10.6.65.218/31 | 10.6.65.218 – 10.6.65.219 | 10.6.65.219 |
| 239 | 10.6.65.220/31 | 10.6.65.220 – 10.6.65.221 | 10.6.65.221 |
| 240 | 10.6.65.222/31 | 10.6.65.222 – 10.6.65.223 | 10.6.65.223 |
| 241 | 10.6.65.224/31 | 10.6.65.224 – 10.6.65.225 | 10.6.65.225 |
| 242 | 10.6.65.226/31 | 10.6.65.226 – 10.6.65.227 | 10.6.65.227 |
| 243 | 10.6.65.228/31 | 10.6.65.228 – 10.6.65.229 | 10.6.65.229 |
| 244 | 10.6.65.230/31 | 10.6.65.230 – 10.6.65.231 | 10.6.65.231 |
| 245 | 10.6.65.232/31 | 10.6.65.232 – 10.6.65.233 | 10.6.65.233 |
| 246 | 10.6.65.234/31 | 10.6.65.234 – 10.6.65.235 | 10.6.65.235 |
| 247 | 10.6.65.236/31 | 10.6.65.236 – 10.6.65.237 | 10.6.65.237 |
| 248 | 10.6.65.238/31 | 10.6.65.238 – 10.6.65.239 | 10.6.65.239 |
| 249 | 10.6.65.240/31 | 10.6.65.240 – 10.6.65.241 | 10.6.65.241 |
| 250 | 10.6.65.242/31 | 10.6.65.242 – 10.6.65.243 | 10.6.65.243 |
| 251 | 10.6.65.244/31 | 10.6.65.244 – 10.6.65.245 | 10.6.65.245 |
| 252 | 10.6.65.246/31 | 10.6.65.246 – 10.6.65.247 | 10.6.65.247 |
| 253 | 10.6.65.248/31 | 10.6.65.248 – 10.6.65.249 | 10.6.65.249 |
| 254 | 10.6.65.250/31 | 10.6.65.250 – 10.6.65.251 | 10.6.65.251 |
| 255 | 10.6.65.252/31 | 10.6.65.252 – 10.6.65.253 | 10.6.65.253 |
| 256 | 10.6.65.254/31 | 10.6.65.254 – 10.6.65.255 | 10.6.65.255 |
showing 256 of 1,024
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.