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)10.0.240.0/20
network10.0.240.0/20
broadcast10.0.255.255
first host10.0.240.1
last host10.0.255.254
subnet mask255.255.240.0
wildcard0.0.15.255
addresses4,096
usable hosts4,094
classA
ipcalc 10.0.240.0/20
address00001010.00000000.11110000.00000000
subnet mask11111111.11111111.11110000.00000000
network00001010.00000000.11110000.00000000
broadcast00001010.00000000.11111111.11111111
green = network part, grey = host part
hex0x0a00f000
decimal167833600
reverse dns0.240.0.10.in-addr.arpa
ipv4-mapped::ffff:a00:f000
/20 split into /28 · 256 subnets
close ×| # | network | host range | broadcast |
|---|---|---|---|
| 1 | 10.0.240.0/28 | 10.0.240.1 – 10.0.240.14 | 10.0.240.15 |
| 2 | 10.0.240.16/28 | 10.0.240.17 – 10.0.240.30 | 10.0.240.31 |
| 3 | 10.0.240.32/28 | 10.0.240.33 – 10.0.240.46 | 10.0.240.47 |
| 4 | 10.0.240.48/28 | 10.0.240.49 – 10.0.240.62 | 10.0.240.63 |
| 5 | 10.0.240.64/28 | 10.0.240.65 – 10.0.240.78 | 10.0.240.79 |
| 6 | 10.0.240.80/28 | 10.0.240.81 – 10.0.240.94 | 10.0.240.95 |
| 7 | 10.0.240.96/28 | 10.0.240.97 – 10.0.240.110 | 10.0.240.111 |
| 8 | 10.0.240.112/28 | 10.0.240.113 – 10.0.240.126 | 10.0.240.127 |
| 9 | 10.0.240.128/28 | 10.0.240.129 – 10.0.240.142 | 10.0.240.143 |
| 10 | 10.0.240.144/28 | 10.0.240.145 – 10.0.240.158 | 10.0.240.159 |
| 11 | 10.0.240.160/28 | 10.0.240.161 – 10.0.240.174 | 10.0.240.175 |
| 12 | 10.0.240.176/28 | 10.0.240.177 – 10.0.240.190 | 10.0.240.191 |
| 13 | 10.0.240.192/28 | 10.0.240.193 – 10.0.240.206 | 10.0.240.207 |
| 14 | 10.0.240.208/28 | 10.0.240.209 – 10.0.240.222 | 10.0.240.223 |
| 15 | 10.0.240.224/28 | 10.0.240.225 – 10.0.240.238 | 10.0.240.239 |
| 16 | 10.0.240.240/28 | 10.0.240.241 – 10.0.240.254 | 10.0.240.255 |
| 17 | 10.0.241.0/28 | 10.0.241.1 – 10.0.241.14 | 10.0.241.15 |
| 18 | 10.0.241.16/28 | 10.0.241.17 – 10.0.241.30 | 10.0.241.31 |
| 19 | 10.0.241.32/28 | 10.0.241.33 – 10.0.241.46 | 10.0.241.47 |
| 20 | 10.0.241.48/28 | 10.0.241.49 – 10.0.241.62 | 10.0.241.63 |
| 21 | 10.0.241.64/28 | 10.0.241.65 – 10.0.241.78 | 10.0.241.79 |
| 22 | 10.0.241.80/28 | 10.0.241.81 – 10.0.241.94 | 10.0.241.95 |
| 23 | 10.0.241.96/28 | 10.0.241.97 – 10.0.241.110 | 10.0.241.111 |
| 24 | 10.0.241.112/28 | 10.0.241.113 – 10.0.241.126 | 10.0.241.127 |
| 25 | 10.0.241.128/28 | 10.0.241.129 – 10.0.241.142 | 10.0.241.143 |
| 26 | 10.0.241.144/28 | 10.0.241.145 – 10.0.241.158 | 10.0.241.159 |
| 27 | 10.0.241.160/28 | 10.0.241.161 – 10.0.241.174 | 10.0.241.175 |
| 28 | 10.0.241.176/28 | 10.0.241.177 – 10.0.241.190 | 10.0.241.191 |
| 29 | 10.0.241.192/28 | 10.0.241.193 – 10.0.241.206 | 10.0.241.207 |
| 30 | 10.0.241.208/28 | 10.0.241.209 – 10.0.241.222 | 10.0.241.223 |
| 31 | 10.0.241.224/28 | 10.0.241.225 – 10.0.241.238 | 10.0.241.239 |
| 32 | 10.0.241.240/28 | 10.0.241.241 – 10.0.241.254 | 10.0.241.255 |
| 33 | 10.0.242.0/28 | 10.0.242.1 – 10.0.242.14 | 10.0.242.15 |
| 34 | 10.0.242.16/28 | 10.0.242.17 – 10.0.242.30 | 10.0.242.31 |
| 35 | 10.0.242.32/28 | 10.0.242.33 – 10.0.242.46 | 10.0.242.47 |
| 36 | 10.0.242.48/28 | 10.0.242.49 – 10.0.242.62 | 10.0.242.63 |
| 37 | 10.0.242.64/28 | 10.0.242.65 – 10.0.242.78 | 10.0.242.79 |
| 38 | 10.0.242.80/28 | 10.0.242.81 – 10.0.242.94 | 10.0.242.95 |
| 39 | 10.0.242.96/28 | 10.0.242.97 – 10.0.242.110 | 10.0.242.111 |
| 40 | 10.0.242.112/28 | 10.0.242.113 – 10.0.242.126 | 10.0.242.127 |
| 41 | 10.0.242.128/28 | 10.0.242.129 – 10.0.242.142 | 10.0.242.143 |
| 42 | 10.0.242.144/28 | 10.0.242.145 – 10.0.242.158 | 10.0.242.159 |
| 43 | 10.0.242.160/28 | 10.0.242.161 – 10.0.242.174 | 10.0.242.175 |
| 44 | 10.0.242.176/28 | 10.0.242.177 – 10.0.242.190 | 10.0.242.191 |
| 45 | 10.0.242.192/28 | 10.0.242.193 – 10.0.242.206 | 10.0.242.207 |
| 46 | 10.0.242.208/28 | 10.0.242.209 – 10.0.242.222 | 10.0.242.223 |
| 47 | 10.0.242.224/28 | 10.0.242.225 – 10.0.242.238 | 10.0.242.239 |
| 48 | 10.0.242.240/28 | 10.0.242.241 – 10.0.242.254 | 10.0.242.255 |
| 49 | 10.0.243.0/28 | 10.0.243.1 – 10.0.243.14 | 10.0.243.15 |
| 50 | 10.0.243.16/28 | 10.0.243.17 – 10.0.243.30 | 10.0.243.31 |
| 51 | 10.0.243.32/28 | 10.0.243.33 – 10.0.243.46 | 10.0.243.47 |
| 52 | 10.0.243.48/28 | 10.0.243.49 – 10.0.243.62 | 10.0.243.63 |
| 53 | 10.0.243.64/28 | 10.0.243.65 – 10.0.243.78 | 10.0.243.79 |
| 54 | 10.0.243.80/28 | 10.0.243.81 – 10.0.243.94 | 10.0.243.95 |
| 55 | 10.0.243.96/28 | 10.0.243.97 – 10.0.243.110 | 10.0.243.111 |
| 56 | 10.0.243.112/28 | 10.0.243.113 – 10.0.243.126 | 10.0.243.127 |
| 57 | 10.0.243.128/28 | 10.0.243.129 – 10.0.243.142 | 10.0.243.143 |
| 58 | 10.0.243.144/28 | 10.0.243.145 – 10.0.243.158 | 10.0.243.159 |
| 59 | 10.0.243.160/28 | 10.0.243.161 – 10.0.243.174 | 10.0.243.175 |
| 60 | 10.0.243.176/28 | 10.0.243.177 – 10.0.243.190 | 10.0.243.191 |
| 61 | 10.0.243.192/28 | 10.0.243.193 – 10.0.243.206 | 10.0.243.207 |
| 62 | 10.0.243.208/28 | 10.0.243.209 – 10.0.243.222 | 10.0.243.223 |
| 63 | 10.0.243.224/28 | 10.0.243.225 – 10.0.243.238 | 10.0.243.239 |
| 64 | 10.0.243.240/28 | 10.0.243.241 – 10.0.243.254 | 10.0.243.255 |
| 65 | 10.0.244.0/28 | 10.0.244.1 – 10.0.244.14 | 10.0.244.15 |
| 66 | 10.0.244.16/28 | 10.0.244.17 – 10.0.244.30 | 10.0.244.31 |
| 67 | 10.0.244.32/28 | 10.0.244.33 – 10.0.244.46 | 10.0.244.47 |
| 68 | 10.0.244.48/28 | 10.0.244.49 – 10.0.244.62 | 10.0.244.63 |
| 69 | 10.0.244.64/28 | 10.0.244.65 – 10.0.244.78 | 10.0.244.79 |
| 70 | 10.0.244.80/28 | 10.0.244.81 – 10.0.244.94 | 10.0.244.95 |
| 71 | 10.0.244.96/28 | 10.0.244.97 – 10.0.244.110 | 10.0.244.111 |
| 72 | 10.0.244.112/28 | 10.0.244.113 – 10.0.244.126 | 10.0.244.127 |
| 73 | 10.0.244.128/28 | 10.0.244.129 – 10.0.244.142 | 10.0.244.143 |
| 74 | 10.0.244.144/28 | 10.0.244.145 – 10.0.244.158 | 10.0.244.159 |
| 75 | 10.0.244.160/28 | 10.0.244.161 – 10.0.244.174 | 10.0.244.175 |
| 76 | 10.0.244.176/28 | 10.0.244.177 – 10.0.244.190 | 10.0.244.191 |
| 77 | 10.0.244.192/28 | 10.0.244.193 – 10.0.244.206 | 10.0.244.207 |
| 78 | 10.0.244.208/28 | 10.0.244.209 – 10.0.244.222 | 10.0.244.223 |
| 79 | 10.0.244.224/28 | 10.0.244.225 – 10.0.244.238 | 10.0.244.239 |
| 80 | 10.0.244.240/28 | 10.0.244.241 – 10.0.244.254 | 10.0.244.255 |
| 81 | 10.0.245.0/28 | 10.0.245.1 – 10.0.245.14 | 10.0.245.15 |
| 82 | 10.0.245.16/28 | 10.0.245.17 – 10.0.245.30 | 10.0.245.31 |
| 83 | 10.0.245.32/28 | 10.0.245.33 – 10.0.245.46 | 10.0.245.47 |
| 84 | 10.0.245.48/28 | 10.0.245.49 – 10.0.245.62 | 10.0.245.63 |
| 85 | 10.0.245.64/28 | 10.0.245.65 – 10.0.245.78 | 10.0.245.79 |
| 86 | 10.0.245.80/28 | 10.0.245.81 – 10.0.245.94 | 10.0.245.95 |
| 87 | 10.0.245.96/28 | 10.0.245.97 – 10.0.245.110 | 10.0.245.111 |
| 88 | 10.0.245.112/28 | 10.0.245.113 – 10.0.245.126 | 10.0.245.127 |
| 89 | 10.0.245.128/28 | 10.0.245.129 – 10.0.245.142 | 10.0.245.143 |
| 90 | 10.0.245.144/28 | 10.0.245.145 – 10.0.245.158 | 10.0.245.159 |
| 91 | 10.0.245.160/28 | 10.0.245.161 – 10.0.245.174 | 10.0.245.175 |
| 92 | 10.0.245.176/28 | 10.0.245.177 – 10.0.245.190 | 10.0.245.191 |
| 93 | 10.0.245.192/28 | 10.0.245.193 – 10.0.245.206 | 10.0.245.207 |
| 94 | 10.0.245.208/28 | 10.0.245.209 – 10.0.245.222 | 10.0.245.223 |
| 95 | 10.0.245.224/28 | 10.0.245.225 – 10.0.245.238 | 10.0.245.239 |
| 96 | 10.0.245.240/28 | 10.0.245.241 – 10.0.245.254 | 10.0.245.255 |
| 97 | 10.0.246.0/28 | 10.0.246.1 – 10.0.246.14 | 10.0.246.15 |
| 98 | 10.0.246.16/28 | 10.0.246.17 – 10.0.246.30 | 10.0.246.31 |
| 99 | 10.0.246.32/28 | 10.0.246.33 – 10.0.246.46 | 10.0.246.47 |
| 100 | 10.0.246.48/28 | 10.0.246.49 – 10.0.246.62 | 10.0.246.63 |
| 101 | 10.0.246.64/28 | 10.0.246.65 – 10.0.246.78 | 10.0.246.79 |
| 102 | 10.0.246.80/28 | 10.0.246.81 – 10.0.246.94 | 10.0.246.95 |
| 103 | 10.0.246.96/28 | 10.0.246.97 – 10.0.246.110 | 10.0.246.111 |
| 104 | 10.0.246.112/28 | 10.0.246.113 – 10.0.246.126 | 10.0.246.127 |
| 105 | 10.0.246.128/28 | 10.0.246.129 – 10.0.246.142 | 10.0.246.143 |
| 106 | 10.0.246.144/28 | 10.0.246.145 – 10.0.246.158 | 10.0.246.159 |
| 107 | 10.0.246.160/28 | 10.0.246.161 – 10.0.246.174 | 10.0.246.175 |
| 108 | 10.0.246.176/28 | 10.0.246.177 – 10.0.246.190 | 10.0.246.191 |
| 109 | 10.0.246.192/28 | 10.0.246.193 – 10.0.246.206 | 10.0.246.207 |
| 110 | 10.0.246.208/28 | 10.0.246.209 – 10.0.246.222 | 10.0.246.223 |
| 111 | 10.0.246.224/28 | 10.0.246.225 – 10.0.246.238 | 10.0.246.239 |
| 112 | 10.0.246.240/28 | 10.0.246.241 – 10.0.246.254 | 10.0.246.255 |
| 113 | 10.0.247.0/28 | 10.0.247.1 – 10.0.247.14 | 10.0.247.15 |
| 114 | 10.0.247.16/28 | 10.0.247.17 – 10.0.247.30 | 10.0.247.31 |
| 115 | 10.0.247.32/28 | 10.0.247.33 – 10.0.247.46 | 10.0.247.47 |
| 116 | 10.0.247.48/28 | 10.0.247.49 – 10.0.247.62 | 10.0.247.63 |
| 117 | 10.0.247.64/28 | 10.0.247.65 – 10.0.247.78 | 10.0.247.79 |
| 118 | 10.0.247.80/28 | 10.0.247.81 – 10.0.247.94 | 10.0.247.95 |
| 119 | 10.0.247.96/28 | 10.0.247.97 – 10.0.247.110 | 10.0.247.111 |
| 120 | 10.0.247.112/28 | 10.0.247.113 – 10.0.247.126 | 10.0.247.127 |
| 121 | 10.0.247.128/28 | 10.0.247.129 – 10.0.247.142 | 10.0.247.143 |
| 122 | 10.0.247.144/28 | 10.0.247.145 – 10.0.247.158 | 10.0.247.159 |
| 123 | 10.0.247.160/28 | 10.0.247.161 – 10.0.247.174 | 10.0.247.175 |
| 124 | 10.0.247.176/28 | 10.0.247.177 – 10.0.247.190 | 10.0.247.191 |
| 125 | 10.0.247.192/28 | 10.0.247.193 – 10.0.247.206 | 10.0.247.207 |
| 126 | 10.0.247.208/28 | 10.0.247.209 – 10.0.247.222 | 10.0.247.223 |
| 127 | 10.0.247.224/28 | 10.0.247.225 – 10.0.247.238 | 10.0.247.239 |
| 128 | 10.0.247.240/28 | 10.0.247.241 – 10.0.247.254 | 10.0.247.255 |
| 129 | 10.0.248.0/28 | 10.0.248.1 – 10.0.248.14 | 10.0.248.15 |
| 130 | 10.0.248.16/28 | 10.0.248.17 – 10.0.248.30 | 10.0.248.31 |
| 131 | 10.0.248.32/28 | 10.0.248.33 – 10.0.248.46 | 10.0.248.47 |
| 132 | 10.0.248.48/28 | 10.0.248.49 – 10.0.248.62 | 10.0.248.63 |
| 133 | 10.0.248.64/28 | 10.0.248.65 – 10.0.248.78 | 10.0.248.79 |
| 134 | 10.0.248.80/28 | 10.0.248.81 – 10.0.248.94 | 10.0.248.95 |
| 135 | 10.0.248.96/28 | 10.0.248.97 – 10.0.248.110 | 10.0.248.111 |
| 136 | 10.0.248.112/28 | 10.0.248.113 – 10.0.248.126 | 10.0.248.127 |
| 137 | 10.0.248.128/28 | 10.0.248.129 – 10.0.248.142 | 10.0.248.143 |
| 138 | 10.0.248.144/28 | 10.0.248.145 – 10.0.248.158 | 10.0.248.159 |
| 139 | 10.0.248.160/28 | 10.0.248.161 – 10.0.248.174 | 10.0.248.175 |
| 140 | 10.0.248.176/28 | 10.0.248.177 – 10.0.248.190 | 10.0.248.191 |
| 141 | 10.0.248.192/28 | 10.0.248.193 – 10.0.248.206 | 10.0.248.207 |
| 142 | 10.0.248.208/28 | 10.0.248.209 – 10.0.248.222 | 10.0.248.223 |
| 143 | 10.0.248.224/28 | 10.0.248.225 – 10.0.248.238 | 10.0.248.239 |
| 144 | 10.0.248.240/28 | 10.0.248.241 – 10.0.248.254 | 10.0.248.255 |
| 145 | 10.0.249.0/28 | 10.0.249.1 – 10.0.249.14 | 10.0.249.15 |
| 146 | 10.0.249.16/28 | 10.0.249.17 – 10.0.249.30 | 10.0.249.31 |
| 147 | 10.0.249.32/28 | 10.0.249.33 – 10.0.249.46 | 10.0.249.47 |
| 148 | 10.0.249.48/28 | 10.0.249.49 – 10.0.249.62 | 10.0.249.63 |
| 149 | 10.0.249.64/28 | 10.0.249.65 – 10.0.249.78 | 10.0.249.79 |
| 150 | 10.0.249.80/28 | 10.0.249.81 – 10.0.249.94 | 10.0.249.95 |
| 151 | 10.0.249.96/28 | 10.0.249.97 – 10.0.249.110 | 10.0.249.111 |
| 152 | 10.0.249.112/28 | 10.0.249.113 – 10.0.249.126 | 10.0.249.127 |
| 153 | 10.0.249.128/28 | 10.0.249.129 – 10.0.249.142 | 10.0.249.143 |
| 154 | 10.0.249.144/28 | 10.0.249.145 – 10.0.249.158 | 10.0.249.159 |
| 155 | 10.0.249.160/28 | 10.0.249.161 – 10.0.249.174 | 10.0.249.175 |
| 156 | 10.0.249.176/28 | 10.0.249.177 – 10.0.249.190 | 10.0.249.191 |
| 157 | 10.0.249.192/28 | 10.0.249.193 – 10.0.249.206 | 10.0.249.207 |
| 158 | 10.0.249.208/28 | 10.0.249.209 – 10.0.249.222 | 10.0.249.223 |
| 159 | 10.0.249.224/28 | 10.0.249.225 – 10.0.249.238 | 10.0.249.239 |
| 160 | 10.0.249.240/28 | 10.0.249.241 – 10.0.249.254 | 10.0.249.255 |
| 161 | 10.0.250.0/28 | 10.0.250.1 – 10.0.250.14 | 10.0.250.15 |
| 162 | 10.0.250.16/28 | 10.0.250.17 – 10.0.250.30 | 10.0.250.31 |
| 163 | 10.0.250.32/28 | 10.0.250.33 – 10.0.250.46 | 10.0.250.47 |
| 164 | 10.0.250.48/28 | 10.0.250.49 – 10.0.250.62 | 10.0.250.63 |
| 165 | 10.0.250.64/28 | 10.0.250.65 – 10.0.250.78 | 10.0.250.79 |
| 166 | 10.0.250.80/28 | 10.0.250.81 – 10.0.250.94 | 10.0.250.95 |
| 167 | 10.0.250.96/28 | 10.0.250.97 – 10.0.250.110 | 10.0.250.111 |
| 168 | 10.0.250.112/28 | 10.0.250.113 – 10.0.250.126 | 10.0.250.127 |
| 169 | 10.0.250.128/28 | 10.0.250.129 – 10.0.250.142 | 10.0.250.143 |
| 170 | 10.0.250.144/28 | 10.0.250.145 – 10.0.250.158 | 10.0.250.159 |
| 171 | 10.0.250.160/28 | 10.0.250.161 – 10.0.250.174 | 10.0.250.175 |
| 172 | 10.0.250.176/28 | 10.0.250.177 – 10.0.250.190 | 10.0.250.191 |
| 173 | 10.0.250.192/28 | 10.0.250.193 – 10.0.250.206 | 10.0.250.207 |
| 174 | 10.0.250.208/28 | 10.0.250.209 – 10.0.250.222 | 10.0.250.223 |
| 175 | 10.0.250.224/28 | 10.0.250.225 – 10.0.250.238 | 10.0.250.239 |
| 176 | 10.0.250.240/28 | 10.0.250.241 – 10.0.250.254 | 10.0.250.255 |
| 177 | 10.0.251.0/28 | 10.0.251.1 – 10.0.251.14 | 10.0.251.15 |
| 178 | 10.0.251.16/28 | 10.0.251.17 – 10.0.251.30 | 10.0.251.31 |
| 179 | 10.0.251.32/28 | 10.0.251.33 – 10.0.251.46 | 10.0.251.47 |
| 180 | 10.0.251.48/28 | 10.0.251.49 – 10.0.251.62 | 10.0.251.63 |
| 181 | 10.0.251.64/28 | 10.0.251.65 – 10.0.251.78 | 10.0.251.79 |
| 182 | 10.0.251.80/28 | 10.0.251.81 – 10.0.251.94 | 10.0.251.95 |
| 183 | 10.0.251.96/28 | 10.0.251.97 – 10.0.251.110 | 10.0.251.111 |
| 184 | 10.0.251.112/28 | 10.0.251.113 – 10.0.251.126 | 10.0.251.127 |
| 185 | 10.0.251.128/28 | 10.0.251.129 – 10.0.251.142 | 10.0.251.143 |
| 186 | 10.0.251.144/28 | 10.0.251.145 – 10.0.251.158 | 10.0.251.159 |
| 187 | 10.0.251.160/28 | 10.0.251.161 – 10.0.251.174 | 10.0.251.175 |
| 188 | 10.0.251.176/28 | 10.0.251.177 – 10.0.251.190 | 10.0.251.191 |
| 189 | 10.0.251.192/28 | 10.0.251.193 – 10.0.251.206 | 10.0.251.207 |
| 190 | 10.0.251.208/28 | 10.0.251.209 – 10.0.251.222 | 10.0.251.223 |
| 191 | 10.0.251.224/28 | 10.0.251.225 – 10.0.251.238 | 10.0.251.239 |
| 192 | 10.0.251.240/28 | 10.0.251.241 – 10.0.251.254 | 10.0.251.255 |
| 193 | 10.0.252.0/28 | 10.0.252.1 – 10.0.252.14 | 10.0.252.15 |
| 194 | 10.0.252.16/28 | 10.0.252.17 – 10.0.252.30 | 10.0.252.31 |
| 195 | 10.0.252.32/28 | 10.0.252.33 – 10.0.252.46 | 10.0.252.47 |
| 196 | 10.0.252.48/28 | 10.0.252.49 – 10.0.252.62 | 10.0.252.63 |
| 197 | 10.0.252.64/28 | 10.0.252.65 – 10.0.252.78 | 10.0.252.79 |
| 198 | 10.0.252.80/28 | 10.0.252.81 – 10.0.252.94 | 10.0.252.95 |
| 199 | 10.0.252.96/28 | 10.0.252.97 – 10.0.252.110 | 10.0.252.111 |
| 200 | 10.0.252.112/28 | 10.0.252.113 – 10.0.252.126 | 10.0.252.127 |
| 201 | 10.0.252.128/28 | 10.0.252.129 – 10.0.252.142 | 10.0.252.143 |
| 202 | 10.0.252.144/28 | 10.0.252.145 – 10.0.252.158 | 10.0.252.159 |
| 203 | 10.0.252.160/28 | 10.0.252.161 – 10.0.252.174 | 10.0.252.175 |
| 204 | 10.0.252.176/28 | 10.0.252.177 – 10.0.252.190 | 10.0.252.191 |
| 205 | 10.0.252.192/28 | 10.0.252.193 – 10.0.252.206 | 10.0.252.207 |
| 206 | 10.0.252.208/28 | 10.0.252.209 – 10.0.252.222 | 10.0.252.223 |
| 207 | 10.0.252.224/28 | 10.0.252.225 – 10.0.252.238 | 10.0.252.239 |
| 208 | 10.0.252.240/28 | 10.0.252.241 – 10.0.252.254 | 10.0.252.255 |
| 209 | 10.0.253.0/28 | 10.0.253.1 – 10.0.253.14 | 10.0.253.15 |
| 210 | 10.0.253.16/28 | 10.0.253.17 – 10.0.253.30 | 10.0.253.31 |
| 211 | 10.0.253.32/28 | 10.0.253.33 – 10.0.253.46 | 10.0.253.47 |
| 212 | 10.0.253.48/28 | 10.0.253.49 – 10.0.253.62 | 10.0.253.63 |
| 213 | 10.0.253.64/28 | 10.0.253.65 – 10.0.253.78 | 10.0.253.79 |
| 214 | 10.0.253.80/28 | 10.0.253.81 – 10.0.253.94 | 10.0.253.95 |
| 215 | 10.0.253.96/28 | 10.0.253.97 – 10.0.253.110 | 10.0.253.111 |
| 216 | 10.0.253.112/28 | 10.0.253.113 – 10.0.253.126 | 10.0.253.127 |
| 217 | 10.0.253.128/28 | 10.0.253.129 – 10.0.253.142 | 10.0.253.143 |
| 218 | 10.0.253.144/28 | 10.0.253.145 – 10.0.253.158 | 10.0.253.159 |
| 219 | 10.0.253.160/28 | 10.0.253.161 – 10.0.253.174 | 10.0.253.175 |
| 220 | 10.0.253.176/28 | 10.0.253.177 – 10.0.253.190 | 10.0.253.191 |
| 221 | 10.0.253.192/28 | 10.0.253.193 – 10.0.253.206 | 10.0.253.207 |
| 222 | 10.0.253.208/28 | 10.0.253.209 – 10.0.253.222 | 10.0.253.223 |
| 223 | 10.0.253.224/28 | 10.0.253.225 – 10.0.253.238 | 10.0.253.239 |
| 224 | 10.0.253.240/28 | 10.0.253.241 – 10.0.253.254 | 10.0.253.255 |
| 225 | 10.0.254.0/28 | 10.0.254.1 – 10.0.254.14 | 10.0.254.15 |
| 226 | 10.0.254.16/28 | 10.0.254.17 – 10.0.254.30 | 10.0.254.31 |
| 227 | 10.0.254.32/28 | 10.0.254.33 – 10.0.254.46 | 10.0.254.47 |
| 228 | 10.0.254.48/28 | 10.0.254.49 – 10.0.254.62 | 10.0.254.63 |
| 229 | 10.0.254.64/28 | 10.0.254.65 – 10.0.254.78 | 10.0.254.79 |
| 230 | 10.0.254.80/28 | 10.0.254.81 – 10.0.254.94 | 10.0.254.95 |
| 231 | 10.0.254.96/28 | 10.0.254.97 – 10.0.254.110 | 10.0.254.111 |
| 232 | 10.0.254.112/28 | 10.0.254.113 – 10.0.254.126 | 10.0.254.127 |
| 233 | 10.0.254.128/28 | 10.0.254.129 – 10.0.254.142 | 10.0.254.143 |
| 234 | 10.0.254.144/28 | 10.0.254.145 – 10.0.254.158 | 10.0.254.159 |
| 235 | 10.0.254.160/28 | 10.0.254.161 – 10.0.254.174 | 10.0.254.175 |
| 236 | 10.0.254.176/28 | 10.0.254.177 – 10.0.254.190 | 10.0.254.191 |
| 237 | 10.0.254.192/28 | 10.0.254.193 – 10.0.254.206 | 10.0.254.207 |
| 238 | 10.0.254.208/28 | 10.0.254.209 – 10.0.254.222 | 10.0.254.223 |
| 239 | 10.0.254.224/28 | 10.0.254.225 – 10.0.254.238 | 10.0.254.239 |
| 240 | 10.0.254.240/28 | 10.0.254.241 – 10.0.254.254 | 10.0.254.255 |
| 241 | 10.0.255.0/28 | 10.0.255.1 – 10.0.255.14 | 10.0.255.15 |
| 242 | 10.0.255.16/28 | 10.0.255.17 – 10.0.255.30 | 10.0.255.31 |
| 243 | 10.0.255.32/28 | 10.0.255.33 – 10.0.255.46 | 10.0.255.47 |
| 244 | 10.0.255.48/28 | 10.0.255.49 – 10.0.255.62 | 10.0.255.63 |
| 245 | 10.0.255.64/28 | 10.0.255.65 – 10.0.255.78 | 10.0.255.79 |
| 246 | 10.0.255.80/28 | 10.0.255.81 – 10.0.255.94 | 10.0.255.95 |
| 247 | 10.0.255.96/28 | 10.0.255.97 – 10.0.255.110 | 10.0.255.111 |
| 248 | 10.0.255.112/28 | 10.0.255.113 – 10.0.255.126 | 10.0.255.127 |
| 249 | 10.0.255.128/28 | 10.0.255.129 – 10.0.255.142 | 10.0.255.143 |
| 250 | 10.0.255.144/28 | 10.0.255.145 – 10.0.255.158 | 10.0.255.159 |
| 251 | 10.0.255.160/28 | 10.0.255.161 – 10.0.255.174 | 10.0.255.175 |
| 252 | 10.0.255.176/28 | 10.0.255.177 – 10.0.255.190 | 10.0.255.191 |
| 253 | 10.0.255.192/28 | 10.0.255.193 – 10.0.255.206 | 10.0.255.207 |
| 254 | 10.0.255.208/28 | 10.0.255.209 – 10.0.255.222 | 10.0.255.223 |
| 255 | 10.0.255.224/28 | 10.0.255.225 – 10.0.255.238 | 10.0.255.239 |
| 256 | 10.0.255.240/28 | 10.0.255.241 – 10.0.255.254 | 10.0.255.255 |
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 /20 |
|---|---|---|---|---|
| /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 | 1 |
| /21 | 255.255.248.0 | 2,048 | 2,046 | 2 split → |
| /22 | 255.255.252.0 | 1,024 | 1,022 | 4 split → |
| /23 | 255.255.254.0 | 512 | 510 | 8 split → |
| /24 | 255.255.255.0 | 256 | 254 | 16 split → |
| /25 | 255.255.255.128 | 128 | 126 | 32 split → |
| /26 | 255.255.255.192 | 64 | 62 | 64 split → |
| /27 | 255.255.255.224 | 32 | 30 | 128 split → |
| /28 | 255.255.255.240 | 16 | 14 | 256 split → |
| /29 | 255.255.255.248 | 8 | 6 | 512 split → |
| /30 | 255.255.255.252 | 4 | 2 | 1,024 split → |
| /31 | 255.255.255.254 | 2 | 2 | 2,048 split → |
| /32 | 255.255.255.255 | 1 | 1 | 4,096 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.