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)10.66.128.0/17
network10.66.128.0/17
broadcast10.66.255.255
first host10.66.128.1
last host10.66.255.254
subnet mask255.255.128.0
wildcard0.0.127.255
addresses32,768
usable hosts32,766
classA
ipcalc 10.66.128.0/17
address00001010.01000010.10000000.00000000
subnet mask11111111.11111111.10000000.00000000
network00001010.01000010.10000000.00000000
broadcast00001010.01000010.11111111.11111111
green = network part, grey = host part
hex0x0a428000
decimal172130304
reverse dns0.128.66.10.in-addr.arpa
ipv4-mapped::ffff:a42:8000
/17 split into /29 · 4,096 subnets
close ×| # | network | host range | broadcast |
|---|---|---|---|
| 1 | 10.66.128.0/29 | 10.66.128.1 – 10.66.128.6 | 10.66.128.7 |
| 2 | 10.66.128.8/29 | 10.66.128.9 – 10.66.128.14 | 10.66.128.15 |
| 3 | 10.66.128.16/29 | 10.66.128.17 – 10.66.128.22 | 10.66.128.23 |
| 4 | 10.66.128.24/29 | 10.66.128.25 – 10.66.128.30 | 10.66.128.31 |
| 5 | 10.66.128.32/29 | 10.66.128.33 – 10.66.128.38 | 10.66.128.39 |
| 6 | 10.66.128.40/29 | 10.66.128.41 – 10.66.128.46 | 10.66.128.47 |
| 7 | 10.66.128.48/29 | 10.66.128.49 – 10.66.128.54 | 10.66.128.55 |
| 8 | 10.66.128.56/29 | 10.66.128.57 – 10.66.128.62 | 10.66.128.63 |
| 9 | 10.66.128.64/29 | 10.66.128.65 – 10.66.128.70 | 10.66.128.71 |
| 10 | 10.66.128.72/29 | 10.66.128.73 – 10.66.128.78 | 10.66.128.79 |
| 11 | 10.66.128.80/29 | 10.66.128.81 – 10.66.128.86 | 10.66.128.87 |
| 12 | 10.66.128.88/29 | 10.66.128.89 – 10.66.128.94 | 10.66.128.95 |
| 13 | 10.66.128.96/29 | 10.66.128.97 – 10.66.128.102 | 10.66.128.103 |
| 14 | 10.66.128.104/29 | 10.66.128.105 – 10.66.128.110 | 10.66.128.111 |
| 15 | 10.66.128.112/29 | 10.66.128.113 – 10.66.128.118 | 10.66.128.119 |
| 16 | 10.66.128.120/29 | 10.66.128.121 – 10.66.128.126 | 10.66.128.127 |
| 17 | 10.66.128.128/29 | 10.66.128.129 – 10.66.128.134 | 10.66.128.135 |
| 18 | 10.66.128.136/29 | 10.66.128.137 – 10.66.128.142 | 10.66.128.143 |
| 19 | 10.66.128.144/29 | 10.66.128.145 – 10.66.128.150 | 10.66.128.151 |
| 20 | 10.66.128.152/29 | 10.66.128.153 – 10.66.128.158 | 10.66.128.159 |
| 21 | 10.66.128.160/29 | 10.66.128.161 – 10.66.128.166 | 10.66.128.167 |
| 22 | 10.66.128.168/29 | 10.66.128.169 – 10.66.128.174 | 10.66.128.175 |
| 23 | 10.66.128.176/29 | 10.66.128.177 – 10.66.128.182 | 10.66.128.183 |
| 24 | 10.66.128.184/29 | 10.66.128.185 – 10.66.128.190 | 10.66.128.191 |
| 25 | 10.66.128.192/29 | 10.66.128.193 – 10.66.128.198 | 10.66.128.199 |
| 26 | 10.66.128.200/29 | 10.66.128.201 – 10.66.128.206 | 10.66.128.207 |
| 27 | 10.66.128.208/29 | 10.66.128.209 – 10.66.128.214 | 10.66.128.215 |
| 28 | 10.66.128.216/29 | 10.66.128.217 – 10.66.128.222 | 10.66.128.223 |
| 29 | 10.66.128.224/29 | 10.66.128.225 – 10.66.128.230 | 10.66.128.231 |
| 30 | 10.66.128.232/29 | 10.66.128.233 – 10.66.128.238 | 10.66.128.239 |
| 31 | 10.66.128.240/29 | 10.66.128.241 – 10.66.128.246 | 10.66.128.247 |
| 32 | 10.66.128.248/29 | 10.66.128.249 – 10.66.128.254 | 10.66.128.255 |
| 33 | 10.66.129.0/29 | 10.66.129.1 – 10.66.129.6 | 10.66.129.7 |
| 34 | 10.66.129.8/29 | 10.66.129.9 – 10.66.129.14 | 10.66.129.15 |
| 35 | 10.66.129.16/29 | 10.66.129.17 – 10.66.129.22 | 10.66.129.23 |
| 36 | 10.66.129.24/29 | 10.66.129.25 – 10.66.129.30 | 10.66.129.31 |
| 37 | 10.66.129.32/29 | 10.66.129.33 – 10.66.129.38 | 10.66.129.39 |
| 38 | 10.66.129.40/29 | 10.66.129.41 – 10.66.129.46 | 10.66.129.47 |
| 39 | 10.66.129.48/29 | 10.66.129.49 – 10.66.129.54 | 10.66.129.55 |
| 40 | 10.66.129.56/29 | 10.66.129.57 – 10.66.129.62 | 10.66.129.63 |
| 41 | 10.66.129.64/29 | 10.66.129.65 – 10.66.129.70 | 10.66.129.71 |
| 42 | 10.66.129.72/29 | 10.66.129.73 – 10.66.129.78 | 10.66.129.79 |
| 43 | 10.66.129.80/29 | 10.66.129.81 – 10.66.129.86 | 10.66.129.87 |
| 44 | 10.66.129.88/29 | 10.66.129.89 – 10.66.129.94 | 10.66.129.95 |
| 45 | 10.66.129.96/29 | 10.66.129.97 – 10.66.129.102 | 10.66.129.103 |
| 46 | 10.66.129.104/29 | 10.66.129.105 – 10.66.129.110 | 10.66.129.111 |
| 47 | 10.66.129.112/29 | 10.66.129.113 – 10.66.129.118 | 10.66.129.119 |
| 48 | 10.66.129.120/29 | 10.66.129.121 – 10.66.129.126 | 10.66.129.127 |
| 49 | 10.66.129.128/29 | 10.66.129.129 – 10.66.129.134 | 10.66.129.135 |
| 50 | 10.66.129.136/29 | 10.66.129.137 – 10.66.129.142 | 10.66.129.143 |
| 51 | 10.66.129.144/29 | 10.66.129.145 – 10.66.129.150 | 10.66.129.151 |
| 52 | 10.66.129.152/29 | 10.66.129.153 – 10.66.129.158 | 10.66.129.159 |
| 53 | 10.66.129.160/29 | 10.66.129.161 – 10.66.129.166 | 10.66.129.167 |
| 54 | 10.66.129.168/29 | 10.66.129.169 – 10.66.129.174 | 10.66.129.175 |
| 55 | 10.66.129.176/29 | 10.66.129.177 – 10.66.129.182 | 10.66.129.183 |
| 56 | 10.66.129.184/29 | 10.66.129.185 – 10.66.129.190 | 10.66.129.191 |
| 57 | 10.66.129.192/29 | 10.66.129.193 – 10.66.129.198 | 10.66.129.199 |
| 58 | 10.66.129.200/29 | 10.66.129.201 – 10.66.129.206 | 10.66.129.207 |
| 59 | 10.66.129.208/29 | 10.66.129.209 – 10.66.129.214 | 10.66.129.215 |
| 60 | 10.66.129.216/29 | 10.66.129.217 – 10.66.129.222 | 10.66.129.223 |
| 61 | 10.66.129.224/29 | 10.66.129.225 – 10.66.129.230 | 10.66.129.231 |
| 62 | 10.66.129.232/29 | 10.66.129.233 – 10.66.129.238 | 10.66.129.239 |
| 63 | 10.66.129.240/29 | 10.66.129.241 – 10.66.129.246 | 10.66.129.247 |
| 64 | 10.66.129.248/29 | 10.66.129.249 – 10.66.129.254 | 10.66.129.255 |
| 65 | 10.66.130.0/29 | 10.66.130.1 – 10.66.130.6 | 10.66.130.7 |
| 66 | 10.66.130.8/29 | 10.66.130.9 – 10.66.130.14 | 10.66.130.15 |
| 67 | 10.66.130.16/29 | 10.66.130.17 – 10.66.130.22 | 10.66.130.23 |
| 68 | 10.66.130.24/29 | 10.66.130.25 – 10.66.130.30 | 10.66.130.31 |
| 69 | 10.66.130.32/29 | 10.66.130.33 – 10.66.130.38 | 10.66.130.39 |
| 70 | 10.66.130.40/29 | 10.66.130.41 – 10.66.130.46 | 10.66.130.47 |
| 71 | 10.66.130.48/29 | 10.66.130.49 – 10.66.130.54 | 10.66.130.55 |
| 72 | 10.66.130.56/29 | 10.66.130.57 – 10.66.130.62 | 10.66.130.63 |
| 73 | 10.66.130.64/29 | 10.66.130.65 – 10.66.130.70 | 10.66.130.71 |
| 74 | 10.66.130.72/29 | 10.66.130.73 – 10.66.130.78 | 10.66.130.79 |
| 75 | 10.66.130.80/29 | 10.66.130.81 – 10.66.130.86 | 10.66.130.87 |
| 76 | 10.66.130.88/29 | 10.66.130.89 – 10.66.130.94 | 10.66.130.95 |
| 77 | 10.66.130.96/29 | 10.66.130.97 – 10.66.130.102 | 10.66.130.103 |
| 78 | 10.66.130.104/29 | 10.66.130.105 – 10.66.130.110 | 10.66.130.111 |
| 79 | 10.66.130.112/29 | 10.66.130.113 – 10.66.130.118 | 10.66.130.119 |
| 80 | 10.66.130.120/29 | 10.66.130.121 – 10.66.130.126 | 10.66.130.127 |
| 81 | 10.66.130.128/29 | 10.66.130.129 – 10.66.130.134 | 10.66.130.135 |
| 82 | 10.66.130.136/29 | 10.66.130.137 – 10.66.130.142 | 10.66.130.143 |
| 83 | 10.66.130.144/29 | 10.66.130.145 – 10.66.130.150 | 10.66.130.151 |
| 84 | 10.66.130.152/29 | 10.66.130.153 – 10.66.130.158 | 10.66.130.159 |
| 85 | 10.66.130.160/29 | 10.66.130.161 – 10.66.130.166 | 10.66.130.167 |
| 86 | 10.66.130.168/29 | 10.66.130.169 – 10.66.130.174 | 10.66.130.175 |
| 87 | 10.66.130.176/29 | 10.66.130.177 – 10.66.130.182 | 10.66.130.183 |
| 88 | 10.66.130.184/29 | 10.66.130.185 – 10.66.130.190 | 10.66.130.191 |
| 89 | 10.66.130.192/29 | 10.66.130.193 – 10.66.130.198 | 10.66.130.199 |
| 90 | 10.66.130.200/29 | 10.66.130.201 – 10.66.130.206 | 10.66.130.207 |
| 91 | 10.66.130.208/29 | 10.66.130.209 – 10.66.130.214 | 10.66.130.215 |
| 92 | 10.66.130.216/29 | 10.66.130.217 – 10.66.130.222 | 10.66.130.223 |
| 93 | 10.66.130.224/29 | 10.66.130.225 – 10.66.130.230 | 10.66.130.231 |
| 94 | 10.66.130.232/29 | 10.66.130.233 – 10.66.130.238 | 10.66.130.239 |
| 95 | 10.66.130.240/29 | 10.66.130.241 – 10.66.130.246 | 10.66.130.247 |
| 96 | 10.66.130.248/29 | 10.66.130.249 – 10.66.130.254 | 10.66.130.255 |
| 97 | 10.66.131.0/29 | 10.66.131.1 – 10.66.131.6 | 10.66.131.7 |
| 98 | 10.66.131.8/29 | 10.66.131.9 – 10.66.131.14 | 10.66.131.15 |
| 99 | 10.66.131.16/29 | 10.66.131.17 – 10.66.131.22 | 10.66.131.23 |
| 100 | 10.66.131.24/29 | 10.66.131.25 – 10.66.131.30 | 10.66.131.31 |
| 101 | 10.66.131.32/29 | 10.66.131.33 – 10.66.131.38 | 10.66.131.39 |
| 102 | 10.66.131.40/29 | 10.66.131.41 – 10.66.131.46 | 10.66.131.47 |
| 103 | 10.66.131.48/29 | 10.66.131.49 – 10.66.131.54 | 10.66.131.55 |
| 104 | 10.66.131.56/29 | 10.66.131.57 – 10.66.131.62 | 10.66.131.63 |
| 105 | 10.66.131.64/29 | 10.66.131.65 – 10.66.131.70 | 10.66.131.71 |
| 106 | 10.66.131.72/29 | 10.66.131.73 – 10.66.131.78 | 10.66.131.79 |
| 107 | 10.66.131.80/29 | 10.66.131.81 – 10.66.131.86 | 10.66.131.87 |
| 108 | 10.66.131.88/29 | 10.66.131.89 – 10.66.131.94 | 10.66.131.95 |
| 109 | 10.66.131.96/29 | 10.66.131.97 – 10.66.131.102 | 10.66.131.103 |
| 110 | 10.66.131.104/29 | 10.66.131.105 – 10.66.131.110 | 10.66.131.111 |
| 111 | 10.66.131.112/29 | 10.66.131.113 – 10.66.131.118 | 10.66.131.119 |
| 112 | 10.66.131.120/29 | 10.66.131.121 – 10.66.131.126 | 10.66.131.127 |
| 113 | 10.66.131.128/29 | 10.66.131.129 – 10.66.131.134 | 10.66.131.135 |
| 114 | 10.66.131.136/29 | 10.66.131.137 – 10.66.131.142 | 10.66.131.143 |
| 115 | 10.66.131.144/29 | 10.66.131.145 – 10.66.131.150 | 10.66.131.151 |
| 116 | 10.66.131.152/29 | 10.66.131.153 – 10.66.131.158 | 10.66.131.159 |
| 117 | 10.66.131.160/29 | 10.66.131.161 – 10.66.131.166 | 10.66.131.167 |
| 118 | 10.66.131.168/29 | 10.66.131.169 – 10.66.131.174 | 10.66.131.175 |
| 119 | 10.66.131.176/29 | 10.66.131.177 – 10.66.131.182 | 10.66.131.183 |
| 120 | 10.66.131.184/29 | 10.66.131.185 – 10.66.131.190 | 10.66.131.191 |
| 121 | 10.66.131.192/29 | 10.66.131.193 – 10.66.131.198 | 10.66.131.199 |
| 122 | 10.66.131.200/29 | 10.66.131.201 – 10.66.131.206 | 10.66.131.207 |
| 123 | 10.66.131.208/29 | 10.66.131.209 – 10.66.131.214 | 10.66.131.215 |
| 124 | 10.66.131.216/29 | 10.66.131.217 – 10.66.131.222 | 10.66.131.223 |
| 125 | 10.66.131.224/29 | 10.66.131.225 – 10.66.131.230 | 10.66.131.231 |
| 126 | 10.66.131.232/29 | 10.66.131.233 – 10.66.131.238 | 10.66.131.239 |
| 127 | 10.66.131.240/29 | 10.66.131.241 – 10.66.131.246 | 10.66.131.247 |
| 128 | 10.66.131.248/29 | 10.66.131.249 – 10.66.131.254 | 10.66.131.255 |
| 129 | 10.66.132.0/29 | 10.66.132.1 – 10.66.132.6 | 10.66.132.7 |
| 130 | 10.66.132.8/29 | 10.66.132.9 – 10.66.132.14 | 10.66.132.15 |
| 131 | 10.66.132.16/29 | 10.66.132.17 – 10.66.132.22 | 10.66.132.23 |
| 132 | 10.66.132.24/29 | 10.66.132.25 – 10.66.132.30 | 10.66.132.31 |
| 133 | 10.66.132.32/29 | 10.66.132.33 – 10.66.132.38 | 10.66.132.39 |
| 134 | 10.66.132.40/29 | 10.66.132.41 – 10.66.132.46 | 10.66.132.47 |
| 135 | 10.66.132.48/29 | 10.66.132.49 – 10.66.132.54 | 10.66.132.55 |
| 136 | 10.66.132.56/29 | 10.66.132.57 – 10.66.132.62 | 10.66.132.63 |
| 137 | 10.66.132.64/29 | 10.66.132.65 – 10.66.132.70 | 10.66.132.71 |
| 138 | 10.66.132.72/29 | 10.66.132.73 – 10.66.132.78 | 10.66.132.79 |
| 139 | 10.66.132.80/29 | 10.66.132.81 – 10.66.132.86 | 10.66.132.87 |
| 140 | 10.66.132.88/29 | 10.66.132.89 – 10.66.132.94 | 10.66.132.95 |
| 141 | 10.66.132.96/29 | 10.66.132.97 – 10.66.132.102 | 10.66.132.103 |
| 142 | 10.66.132.104/29 | 10.66.132.105 – 10.66.132.110 | 10.66.132.111 |
| 143 | 10.66.132.112/29 | 10.66.132.113 – 10.66.132.118 | 10.66.132.119 |
| 144 | 10.66.132.120/29 | 10.66.132.121 – 10.66.132.126 | 10.66.132.127 |
| 145 | 10.66.132.128/29 | 10.66.132.129 – 10.66.132.134 | 10.66.132.135 |
| 146 | 10.66.132.136/29 | 10.66.132.137 – 10.66.132.142 | 10.66.132.143 |
| 147 | 10.66.132.144/29 | 10.66.132.145 – 10.66.132.150 | 10.66.132.151 |
| 148 | 10.66.132.152/29 | 10.66.132.153 – 10.66.132.158 | 10.66.132.159 |
| 149 | 10.66.132.160/29 | 10.66.132.161 – 10.66.132.166 | 10.66.132.167 |
| 150 | 10.66.132.168/29 | 10.66.132.169 – 10.66.132.174 | 10.66.132.175 |
| 151 | 10.66.132.176/29 | 10.66.132.177 – 10.66.132.182 | 10.66.132.183 |
| 152 | 10.66.132.184/29 | 10.66.132.185 – 10.66.132.190 | 10.66.132.191 |
| 153 | 10.66.132.192/29 | 10.66.132.193 – 10.66.132.198 | 10.66.132.199 |
| 154 | 10.66.132.200/29 | 10.66.132.201 – 10.66.132.206 | 10.66.132.207 |
| 155 | 10.66.132.208/29 | 10.66.132.209 – 10.66.132.214 | 10.66.132.215 |
| 156 | 10.66.132.216/29 | 10.66.132.217 – 10.66.132.222 | 10.66.132.223 |
| 157 | 10.66.132.224/29 | 10.66.132.225 – 10.66.132.230 | 10.66.132.231 |
| 158 | 10.66.132.232/29 | 10.66.132.233 – 10.66.132.238 | 10.66.132.239 |
| 159 | 10.66.132.240/29 | 10.66.132.241 – 10.66.132.246 | 10.66.132.247 |
| 160 | 10.66.132.248/29 | 10.66.132.249 – 10.66.132.254 | 10.66.132.255 |
| 161 | 10.66.133.0/29 | 10.66.133.1 – 10.66.133.6 | 10.66.133.7 |
| 162 | 10.66.133.8/29 | 10.66.133.9 – 10.66.133.14 | 10.66.133.15 |
| 163 | 10.66.133.16/29 | 10.66.133.17 – 10.66.133.22 | 10.66.133.23 |
| 164 | 10.66.133.24/29 | 10.66.133.25 – 10.66.133.30 | 10.66.133.31 |
| 165 | 10.66.133.32/29 | 10.66.133.33 – 10.66.133.38 | 10.66.133.39 |
| 166 | 10.66.133.40/29 | 10.66.133.41 – 10.66.133.46 | 10.66.133.47 |
| 167 | 10.66.133.48/29 | 10.66.133.49 – 10.66.133.54 | 10.66.133.55 |
| 168 | 10.66.133.56/29 | 10.66.133.57 – 10.66.133.62 | 10.66.133.63 |
| 169 | 10.66.133.64/29 | 10.66.133.65 – 10.66.133.70 | 10.66.133.71 |
| 170 | 10.66.133.72/29 | 10.66.133.73 – 10.66.133.78 | 10.66.133.79 |
| 171 | 10.66.133.80/29 | 10.66.133.81 – 10.66.133.86 | 10.66.133.87 |
| 172 | 10.66.133.88/29 | 10.66.133.89 – 10.66.133.94 | 10.66.133.95 |
| 173 | 10.66.133.96/29 | 10.66.133.97 – 10.66.133.102 | 10.66.133.103 |
| 174 | 10.66.133.104/29 | 10.66.133.105 – 10.66.133.110 | 10.66.133.111 |
| 175 | 10.66.133.112/29 | 10.66.133.113 – 10.66.133.118 | 10.66.133.119 |
| 176 | 10.66.133.120/29 | 10.66.133.121 – 10.66.133.126 | 10.66.133.127 |
| 177 | 10.66.133.128/29 | 10.66.133.129 – 10.66.133.134 | 10.66.133.135 |
| 178 | 10.66.133.136/29 | 10.66.133.137 – 10.66.133.142 | 10.66.133.143 |
| 179 | 10.66.133.144/29 | 10.66.133.145 – 10.66.133.150 | 10.66.133.151 |
| 180 | 10.66.133.152/29 | 10.66.133.153 – 10.66.133.158 | 10.66.133.159 |
| 181 | 10.66.133.160/29 | 10.66.133.161 – 10.66.133.166 | 10.66.133.167 |
| 182 | 10.66.133.168/29 | 10.66.133.169 – 10.66.133.174 | 10.66.133.175 |
| 183 | 10.66.133.176/29 | 10.66.133.177 – 10.66.133.182 | 10.66.133.183 |
| 184 | 10.66.133.184/29 | 10.66.133.185 – 10.66.133.190 | 10.66.133.191 |
| 185 | 10.66.133.192/29 | 10.66.133.193 – 10.66.133.198 | 10.66.133.199 |
| 186 | 10.66.133.200/29 | 10.66.133.201 – 10.66.133.206 | 10.66.133.207 |
| 187 | 10.66.133.208/29 | 10.66.133.209 – 10.66.133.214 | 10.66.133.215 |
| 188 | 10.66.133.216/29 | 10.66.133.217 – 10.66.133.222 | 10.66.133.223 |
| 189 | 10.66.133.224/29 | 10.66.133.225 – 10.66.133.230 | 10.66.133.231 |
| 190 | 10.66.133.232/29 | 10.66.133.233 – 10.66.133.238 | 10.66.133.239 |
| 191 | 10.66.133.240/29 | 10.66.133.241 – 10.66.133.246 | 10.66.133.247 |
| 192 | 10.66.133.248/29 | 10.66.133.249 – 10.66.133.254 | 10.66.133.255 |
| 193 | 10.66.134.0/29 | 10.66.134.1 – 10.66.134.6 | 10.66.134.7 |
| 194 | 10.66.134.8/29 | 10.66.134.9 – 10.66.134.14 | 10.66.134.15 |
| 195 | 10.66.134.16/29 | 10.66.134.17 – 10.66.134.22 | 10.66.134.23 |
| 196 | 10.66.134.24/29 | 10.66.134.25 – 10.66.134.30 | 10.66.134.31 |
| 197 | 10.66.134.32/29 | 10.66.134.33 – 10.66.134.38 | 10.66.134.39 |
| 198 | 10.66.134.40/29 | 10.66.134.41 – 10.66.134.46 | 10.66.134.47 |
| 199 | 10.66.134.48/29 | 10.66.134.49 – 10.66.134.54 | 10.66.134.55 |
| 200 | 10.66.134.56/29 | 10.66.134.57 – 10.66.134.62 | 10.66.134.63 |
| 201 | 10.66.134.64/29 | 10.66.134.65 – 10.66.134.70 | 10.66.134.71 |
| 202 | 10.66.134.72/29 | 10.66.134.73 – 10.66.134.78 | 10.66.134.79 |
| 203 | 10.66.134.80/29 | 10.66.134.81 – 10.66.134.86 | 10.66.134.87 |
| 204 | 10.66.134.88/29 | 10.66.134.89 – 10.66.134.94 | 10.66.134.95 |
| 205 | 10.66.134.96/29 | 10.66.134.97 – 10.66.134.102 | 10.66.134.103 |
| 206 | 10.66.134.104/29 | 10.66.134.105 – 10.66.134.110 | 10.66.134.111 |
| 207 | 10.66.134.112/29 | 10.66.134.113 – 10.66.134.118 | 10.66.134.119 |
| 208 | 10.66.134.120/29 | 10.66.134.121 – 10.66.134.126 | 10.66.134.127 |
| 209 | 10.66.134.128/29 | 10.66.134.129 – 10.66.134.134 | 10.66.134.135 |
| 210 | 10.66.134.136/29 | 10.66.134.137 – 10.66.134.142 | 10.66.134.143 |
| 211 | 10.66.134.144/29 | 10.66.134.145 – 10.66.134.150 | 10.66.134.151 |
| 212 | 10.66.134.152/29 | 10.66.134.153 – 10.66.134.158 | 10.66.134.159 |
| 213 | 10.66.134.160/29 | 10.66.134.161 – 10.66.134.166 | 10.66.134.167 |
| 214 | 10.66.134.168/29 | 10.66.134.169 – 10.66.134.174 | 10.66.134.175 |
| 215 | 10.66.134.176/29 | 10.66.134.177 – 10.66.134.182 | 10.66.134.183 |
| 216 | 10.66.134.184/29 | 10.66.134.185 – 10.66.134.190 | 10.66.134.191 |
| 217 | 10.66.134.192/29 | 10.66.134.193 – 10.66.134.198 | 10.66.134.199 |
| 218 | 10.66.134.200/29 | 10.66.134.201 – 10.66.134.206 | 10.66.134.207 |
| 219 | 10.66.134.208/29 | 10.66.134.209 – 10.66.134.214 | 10.66.134.215 |
| 220 | 10.66.134.216/29 | 10.66.134.217 – 10.66.134.222 | 10.66.134.223 |
| 221 | 10.66.134.224/29 | 10.66.134.225 – 10.66.134.230 | 10.66.134.231 |
| 222 | 10.66.134.232/29 | 10.66.134.233 – 10.66.134.238 | 10.66.134.239 |
| 223 | 10.66.134.240/29 | 10.66.134.241 – 10.66.134.246 | 10.66.134.247 |
| 224 | 10.66.134.248/29 | 10.66.134.249 – 10.66.134.254 | 10.66.134.255 |
| 225 | 10.66.135.0/29 | 10.66.135.1 – 10.66.135.6 | 10.66.135.7 |
| 226 | 10.66.135.8/29 | 10.66.135.9 – 10.66.135.14 | 10.66.135.15 |
| 227 | 10.66.135.16/29 | 10.66.135.17 – 10.66.135.22 | 10.66.135.23 |
| 228 | 10.66.135.24/29 | 10.66.135.25 – 10.66.135.30 | 10.66.135.31 |
| 229 | 10.66.135.32/29 | 10.66.135.33 – 10.66.135.38 | 10.66.135.39 |
| 230 | 10.66.135.40/29 | 10.66.135.41 – 10.66.135.46 | 10.66.135.47 |
| 231 | 10.66.135.48/29 | 10.66.135.49 – 10.66.135.54 | 10.66.135.55 |
| 232 | 10.66.135.56/29 | 10.66.135.57 – 10.66.135.62 | 10.66.135.63 |
| 233 | 10.66.135.64/29 | 10.66.135.65 – 10.66.135.70 | 10.66.135.71 |
| 234 | 10.66.135.72/29 | 10.66.135.73 – 10.66.135.78 | 10.66.135.79 |
| 235 | 10.66.135.80/29 | 10.66.135.81 – 10.66.135.86 | 10.66.135.87 |
| 236 | 10.66.135.88/29 | 10.66.135.89 – 10.66.135.94 | 10.66.135.95 |
| 237 | 10.66.135.96/29 | 10.66.135.97 – 10.66.135.102 | 10.66.135.103 |
| 238 | 10.66.135.104/29 | 10.66.135.105 – 10.66.135.110 | 10.66.135.111 |
| 239 | 10.66.135.112/29 | 10.66.135.113 – 10.66.135.118 | 10.66.135.119 |
| 240 | 10.66.135.120/29 | 10.66.135.121 – 10.66.135.126 | 10.66.135.127 |
| 241 | 10.66.135.128/29 | 10.66.135.129 – 10.66.135.134 | 10.66.135.135 |
| 242 | 10.66.135.136/29 | 10.66.135.137 – 10.66.135.142 | 10.66.135.143 |
| 243 | 10.66.135.144/29 | 10.66.135.145 – 10.66.135.150 | 10.66.135.151 |
| 244 | 10.66.135.152/29 | 10.66.135.153 – 10.66.135.158 | 10.66.135.159 |
| 245 | 10.66.135.160/29 | 10.66.135.161 – 10.66.135.166 | 10.66.135.167 |
| 246 | 10.66.135.168/29 | 10.66.135.169 – 10.66.135.174 | 10.66.135.175 |
| 247 | 10.66.135.176/29 | 10.66.135.177 – 10.66.135.182 | 10.66.135.183 |
| 248 | 10.66.135.184/29 | 10.66.135.185 – 10.66.135.190 | 10.66.135.191 |
| 249 | 10.66.135.192/29 | 10.66.135.193 – 10.66.135.198 | 10.66.135.199 |
| 250 | 10.66.135.200/29 | 10.66.135.201 – 10.66.135.206 | 10.66.135.207 |
| 251 | 10.66.135.208/29 | 10.66.135.209 – 10.66.135.214 | 10.66.135.215 |
| 252 | 10.66.135.216/29 | 10.66.135.217 – 10.66.135.222 | 10.66.135.223 |
| 253 | 10.66.135.224/29 | 10.66.135.225 – 10.66.135.230 | 10.66.135.231 |
| 254 | 10.66.135.232/29 | 10.66.135.233 – 10.66.135.238 | 10.66.135.239 |
| 255 | 10.66.135.240/29 | 10.66.135.241 – 10.66.135.246 | 10.66.135.247 |
| 256 | 10.66.135.248/29 | 10.66.135.249 – 10.66.135.254 | 10.66.135.255 |
showing 256 of 4,096
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 /17 |
|---|---|---|---|---|
| /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 | 1 |
| /18 | 255.255.192.0 | 16,384 | 16,382 | 2 split → |
| /19 | 255.255.224.0 | 8,192 | 8,190 | 4 split → |
| /20 | 255.255.240.0 | 4,096 | 4,094 | 8 split → |
| /21 | 255.255.248.0 | 2,048 | 2,046 | 16 split → |
| /22 | 255.255.252.0 | 1,024 | 1,022 | 32 split → |
| /23 | 255.255.254.0 | 512 | 510 | 64 split → |
| /24 | 255.255.255.0 | 256 | 254 | 128 split → |
| /25 | 255.255.255.128 | 128 | 126 | 256 split → |
| /26 | 255.255.255.192 | 64 | 62 | 512 split → |
| /27 | 255.255.255.224 | 32 | 30 | 1,024 split → |
| /28 | 255.255.255.240 | 16 | 14 | 2,048 split → |
| /29 | 255.255.255.248 | 8 | 6 | 4,096 split → |
| /30 | 255.255.255.252 | 4 | 2 | 8,192 split → |
| /31 | 255.255.255.254 | 2 | 2 | 16,384 split → |
| /32 | 255.255.255.255 | 1 | 1 | 32,768 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.