IP subnet calculator
Type an address with its prefix or mask to see the network, its usable range and masks. Split it into smaller subnets, or look up any prefix in the reference tables.
Network82.167.2.0/24
Usable hosts254
Subnet mask255.255.255.0
Addresses256
- Network address
82.167.2.0- Broadcast address
82.167.2.255- First usable
82.167.2.1- Last usable
82.167.2.254- Usable hosts
- 254 (256 less the network and broadcast addresses)
- Subnet mask
255.255.255.0- Wildcard mask
0.0.0.255(Cisco ACLs, OSPF)- Prefix length
- /24
- Type
- Public public
- Old class
- A (default /8)
- As numbers
- Hex
52A70200· Integer1386676736to1386676991 - Reverse DNS zone
2.167.82.in-addr.arpa
Binary
| Binary (network bits bold, host bits grey) | Dotted | |
|---|---|---|
| Address | 01010010.10100111.00000010..00000000 | 82.167.2.0 |
| Subnet mask | 11111111.11111111.11111111..00000000 | 255.255.255.0 |
| Network | 01010010.10100111.00000010..00000000 | 82.167.2.0 |
| Broadcast | 01010010.10100111.00000010..11111111 | 82.167.2.255 |
Split into smaller subnets
82.167.2.0/24 makes 256 subnets of /32.
| # | Subnet | Usable hosts range | Broadcast | Hosts |
|---|---|---|---|---|
| 1 | 82.167.2.0/32 | 82.167.2.0 to 82.167.2.0 | — | 1 |
| 2 | 82.167.2.1/32 | 82.167.2.1 to 82.167.2.1 | — | 1 |
| 3 | 82.167.2.2/32 | 82.167.2.2 to 82.167.2.2 | — | 1 |
| 4 | 82.167.2.3/32 | 82.167.2.3 to 82.167.2.3 | — | 1 |
| 5 | 82.167.2.4/32 | 82.167.2.4 to 82.167.2.4 | — | 1 |
| 6 | 82.167.2.5/32 | 82.167.2.5 to 82.167.2.5 | — | 1 |
| 7 | 82.167.2.6/32 | 82.167.2.6 to 82.167.2.6 | — | 1 |
| 8 | 82.167.2.7/32 | 82.167.2.7 to 82.167.2.7 | — | 1 |
| 9 | 82.167.2.8/32 | 82.167.2.8 to 82.167.2.8 | — | 1 |
| 10 | 82.167.2.9/32 | 82.167.2.9 to 82.167.2.9 | — | 1 |
| 11 | 82.167.2.10/32 | 82.167.2.10 to 82.167.2.10 | — | 1 |
| 12 | 82.167.2.11/32 | 82.167.2.11 to 82.167.2.11 | — | 1 |
| 13 | 82.167.2.12/32 | 82.167.2.12 to 82.167.2.12 | — | 1 |
| 14 | 82.167.2.13/32 | 82.167.2.13 to 82.167.2.13 | — | 1 |
| 15 | 82.167.2.14/32 | 82.167.2.14 to 82.167.2.14 | — | 1 |
| 16 | 82.167.2.15/32 | 82.167.2.15 to 82.167.2.15 | — | 1 |
| 17 | 82.167.2.16/32 | 82.167.2.16 to 82.167.2.16 | — | 1 |
| 18 | 82.167.2.17/32 | 82.167.2.17 to 82.167.2.17 | — | 1 |
| 19 | 82.167.2.18/32 | 82.167.2.18 to 82.167.2.18 | — | 1 |
| 20 | 82.167.2.19/32 | 82.167.2.19 to 82.167.2.19 | — | 1 |
| 21 | 82.167.2.20/32 | 82.167.2.20 to 82.167.2.20 | — | 1 |
| 22 | 82.167.2.21/32 | 82.167.2.21 to 82.167.2.21 | — | 1 |
| 23 | 82.167.2.22/32 | 82.167.2.22 to 82.167.2.22 | — | 1 |
| 24 | 82.167.2.23/32 | 82.167.2.23 to 82.167.2.23 | — | 1 |
| 25 | 82.167.2.24/32 | 82.167.2.24 to 82.167.2.24 | — | 1 |
| 26 | 82.167.2.25/32 | 82.167.2.25 to 82.167.2.25 | — | 1 |
| 27 | 82.167.2.26/32 | 82.167.2.26 to 82.167.2.26 | — | 1 |
| 28 | 82.167.2.27/32 | 82.167.2.27 to 82.167.2.27 | — | 1 |
| 29 | 82.167.2.28/32 | 82.167.2.28 to 82.167.2.28 | — | 1 |
| 30 | 82.167.2.29/32 | 82.167.2.29 to 82.167.2.29 | — | 1 |
| 31 | 82.167.2.30/32 | 82.167.2.30 to 82.167.2.30 | — | 1 |
| 32 | 82.167.2.31/32 | 82.167.2.31 to 82.167.2.31 | — | 1 |
| 33 | 82.167.2.32/32 | 82.167.2.32 to 82.167.2.32 | — | 1 |
| 34 | 82.167.2.33/32 | 82.167.2.33 to 82.167.2.33 | — | 1 |
| 35 | 82.167.2.34/32 | 82.167.2.34 to 82.167.2.34 | — | 1 |
| 36 | 82.167.2.35/32 | 82.167.2.35 to 82.167.2.35 | — | 1 |
| 37 | 82.167.2.36/32 | 82.167.2.36 to 82.167.2.36 | — | 1 |
| 38 | 82.167.2.37/32 | 82.167.2.37 to 82.167.2.37 | — | 1 |
| 39 | 82.167.2.38/32 | 82.167.2.38 to 82.167.2.38 | — | 1 |
| 40 | 82.167.2.39/32 | 82.167.2.39 to 82.167.2.39 | — | 1 |
| 41 | 82.167.2.40/32 | 82.167.2.40 to 82.167.2.40 | — | 1 |
| 42 | 82.167.2.41/32 | 82.167.2.41 to 82.167.2.41 | — | 1 |
| 43 | 82.167.2.42/32 | 82.167.2.42 to 82.167.2.42 | — | 1 |
| 44 | 82.167.2.43/32 | 82.167.2.43 to 82.167.2.43 | — | 1 |
| 45 | 82.167.2.44/32 | 82.167.2.44 to 82.167.2.44 | — | 1 |
| 46 | 82.167.2.45/32 | 82.167.2.45 to 82.167.2.45 | — | 1 |
| 47 | 82.167.2.46/32 | 82.167.2.46 to 82.167.2.46 | — | 1 |
| 48 | 82.167.2.47/32 | 82.167.2.47 to 82.167.2.47 | — | 1 |
| 49 | 82.167.2.48/32 | 82.167.2.48 to 82.167.2.48 | — | 1 |
| 50 | 82.167.2.49/32 | 82.167.2.49 to 82.167.2.49 | — | 1 |
| 51 | 82.167.2.50/32 | 82.167.2.50 to 82.167.2.50 | — | 1 |
| 52 | 82.167.2.51/32 | 82.167.2.51 to 82.167.2.51 | — | 1 |
| 53 | 82.167.2.52/32 | 82.167.2.52 to 82.167.2.52 | — | 1 |
| 54 | 82.167.2.53/32 | 82.167.2.53 to 82.167.2.53 | — | 1 |
| 55 | 82.167.2.54/32 | 82.167.2.54 to 82.167.2.54 | — | 1 |
| 56 | 82.167.2.55/32 | 82.167.2.55 to 82.167.2.55 | — | 1 |
| 57 | 82.167.2.56/32 | 82.167.2.56 to 82.167.2.56 | — | 1 |
| 58 | 82.167.2.57/32 | 82.167.2.57 to 82.167.2.57 | — | 1 |
| 59 | 82.167.2.58/32 | 82.167.2.58 to 82.167.2.58 | — | 1 |
| 60 | 82.167.2.59/32 | 82.167.2.59 to 82.167.2.59 | — | 1 |
| 61 | 82.167.2.60/32 | 82.167.2.60 to 82.167.2.60 | — | 1 |
| 62 | 82.167.2.61/32 | 82.167.2.61 to 82.167.2.61 | — | 1 |
| 63 | 82.167.2.62/32 | 82.167.2.62 to 82.167.2.62 | — | 1 |
| 64 | 82.167.2.63/32 | 82.167.2.63 to 82.167.2.63 | — | 1 |
| 65 | 82.167.2.64/32 | 82.167.2.64 to 82.167.2.64 | — | 1 |
| 66 | 82.167.2.65/32 | 82.167.2.65 to 82.167.2.65 | — | 1 |
| 67 | 82.167.2.66/32 | 82.167.2.66 to 82.167.2.66 | — | 1 |
| 68 | 82.167.2.67/32 | 82.167.2.67 to 82.167.2.67 | — | 1 |
| 69 | 82.167.2.68/32 | 82.167.2.68 to 82.167.2.68 | — | 1 |
| 70 | 82.167.2.69/32 | 82.167.2.69 to 82.167.2.69 | — | 1 |
| 71 | 82.167.2.70/32 | 82.167.2.70 to 82.167.2.70 | — | 1 |
| 72 | 82.167.2.71/32 | 82.167.2.71 to 82.167.2.71 | — | 1 |
| 73 | 82.167.2.72/32 | 82.167.2.72 to 82.167.2.72 | — | 1 |
| 74 | 82.167.2.73/32 | 82.167.2.73 to 82.167.2.73 | — | 1 |
| 75 | 82.167.2.74/32 | 82.167.2.74 to 82.167.2.74 | — | 1 |
| 76 | 82.167.2.75/32 | 82.167.2.75 to 82.167.2.75 | — | 1 |
| 77 | 82.167.2.76/32 | 82.167.2.76 to 82.167.2.76 | — | 1 |
| 78 | 82.167.2.77/32 | 82.167.2.77 to 82.167.2.77 | — | 1 |
| 79 | 82.167.2.78/32 | 82.167.2.78 to 82.167.2.78 | — | 1 |
| 80 | 82.167.2.79/32 | 82.167.2.79 to 82.167.2.79 | — | 1 |
| 81 | 82.167.2.80/32 | 82.167.2.80 to 82.167.2.80 | — | 1 |
| 82 | 82.167.2.81/32 | 82.167.2.81 to 82.167.2.81 | — | 1 |
| 83 | 82.167.2.82/32 | 82.167.2.82 to 82.167.2.82 | — | 1 |
| 84 | 82.167.2.83/32 | 82.167.2.83 to 82.167.2.83 | — | 1 |
| 85 | 82.167.2.84/32 | 82.167.2.84 to 82.167.2.84 | — | 1 |
| 86 | 82.167.2.85/32 | 82.167.2.85 to 82.167.2.85 | — | 1 |
| 87 | 82.167.2.86/32 | 82.167.2.86 to 82.167.2.86 | — | 1 |
| 88 | 82.167.2.87/32 | 82.167.2.87 to 82.167.2.87 | — | 1 |
| 89 | 82.167.2.88/32 | 82.167.2.88 to 82.167.2.88 | — | 1 |
| 90 | 82.167.2.89/32 | 82.167.2.89 to 82.167.2.89 | — | 1 |
| 91 | 82.167.2.90/32 | 82.167.2.90 to 82.167.2.90 | — | 1 |
| 92 | 82.167.2.91/32 | 82.167.2.91 to 82.167.2.91 | — | 1 |
| 93 | 82.167.2.92/32 | 82.167.2.92 to 82.167.2.92 | — | 1 |
| 94 | 82.167.2.93/32 | 82.167.2.93 to 82.167.2.93 | — | 1 |
| 95 | 82.167.2.94/32 | 82.167.2.94 to 82.167.2.94 | — | 1 |
| 96 | 82.167.2.95/32 | 82.167.2.95 to 82.167.2.95 | — | 1 |
| 97 | 82.167.2.96/32 | 82.167.2.96 to 82.167.2.96 | — | 1 |
| 98 | 82.167.2.97/32 | 82.167.2.97 to 82.167.2.97 | — | 1 |
| 99 | 82.167.2.98/32 | 82.167.2.98 to 82.167.2.98 | — | 1 |
| 100 | 82.167.2.99/32 | 82.167.2.99 to 82.167.2.99 | — | 1 |
| 101 | 82.167.2.100/32 | 82.167.2.100 to 82.167.2.100 | — | 1 |
| 102 | 82.167.2.101/32 | 82.167.2.101 to 82.167.2.101 | — | 1 |
| 103 | 82.167.2.102/32 | 82.167.2.102 to 82.167.2.102 | — | 1 |
| 104 | 82.167.2.103/32 | 82.167.2.103 to 82.167.2.103 | — | 1 |
| 105 | 82.167.2.104/32 | 82.167.2.104 to 82.167.2.104 | — | 1 |
| 106 | 82.167.2.105/32 | 82.167.2.105 to 82.167.2.105 | — | 1 |
| 107 | 82.167.2.106/32 | 82.167.2.106 to 82.167.2.106 | — | 1 |
| 108 | 82.167.2.107/32 | 82.167.2.107 to 82.167.2.107 | — | 1 |
| 109 | 82.167.2.108/32 | 82.167.2.108 to 82.167.2.108 | — | 1 |
| 110 | 82.167.2.109/32 | 82.167.2.109 to 82.167.2.109 | — | 1 |
| 111 | 82.167.2.110/32 | 82.167.2.110 to 82.167.2.110 | — | 1 |
| 112 | 82.167.2.111/32 | 82.167.2.111 to 82.167.2.111 | — | 1 |
| 113 | 82.167.2.112/32 | 82.167.2.112 to 82.167.2.112 | — | 1 |
| 114 | 82.167.2.113/32 | 82.167.2.113 to 82.167.2.113 | — | 1 |
| 115 | 82.167.2.114/32 | 82.167.2.114 to 82.167.2.114 | — | 1 |
| 116 | 82.167.2.115/32 | 82.167.2.115 to 82.167.2.115 | — | 1 |
| 117 | 82.167.2.116/32 | 82.167.2.116 to 82.167.2.116 | — | 1 |
| 118 | 82.167.2.117/32 | 82.167.2.117 to 82.167.2.117 | — | 1 |
| 119 | 82.167.2.118/32 | 82.167.2.118 to 82.167.2.118 | — | 1 |
| 120 | 82.167.2.119/32 | 82.167.2.119 to 82.167.2.119 | — | 1 |
| 121 | 82.167.2.120/32 | 82.167.2.120 to 82.167.2.120 | — | 1 |
| 122 | 82.167.2.121/32 | 82.167.2.121 to 82.167.2.121 | — | 1 |
| 123 | 82.167.2.122/32 | 82.167.2.122 to 82.167.2.122 | — | 1 |
| 124 | 82.167.2.123/32 | 82.167.2.123 to 82.167.2.123 | — | 1 |
| 125 | 82.167.2.124/32 | 82.167.2.124 to 82.167.2.124 | — | 1 |
| 126 | 82.167.2.125/32 | 82.167.2.125 to 82.167.2.125 | — | 1 |
| 127 | 82.167.2.126/32 | 82.167.2.126 to 82.167.2.126 | — | 1 |
| 128 | 82.167.2.127/32 | 82.167.2.127 to 82.167.2.127 | — | 1 |
| 129 | 82.167.2.128/32 | 82.167.2.128 to 82.167.2.128 | — | 1 |
| 130 | 82.167.2.129/32 | 82.167.2.129 to 82.167.2.129 | — | 1 |
| 131 | 82.167.2.130/32 | 82.167.2.130 to 82.167.2.130 | — | 1 |
| 132 | 82.167.2.131/32 | 82.167.2.131 to 82.167.2.131 | — | 1 |
| 133 | 82.167.2.132/32 | 82.167.2.132 to 82.167.2.132 | — | 1 |
| 134 | 82.167.2.133/32 | 82.167.2.133 to 82.167.2.133 | — | 1 |
| 135 | 82.167.2.134/32 | 82.167.2.134 to 82.167.2.134 | — | 1 |
| 136 | 82.167.2.135/32 | 82.167.2.135 to 82.167.2.135 | — | 1 |
| 137 | 82.167.2.136/32 | 82.167.2.136 to 82.167.2.136 | — | 1 |
| 138 | 82.167.2.137/32 | 82.167.2.137 to 82.167.2.137 | — | 1 |
| 139 | 82.167.2.138/32 | 82.167.2.138 to 82.167.2.138 | — | 1 |
| 140 | 82.167.2.139/32 | 82.167.2.139 to 82.167.2.139 | — | 1 |
| 141 | 82.167.2.140/32 | 82.167.2.140 to 82.167.2.140 | — | 1 |
| 142 | 82.167.2.141/32 | 82.167.2.141 to 82.167.2.141 | — | 1 |
| 143 | 82.167.2.142/32 | 82.167.2.142 to 82.167.2.142 | — | 1 |
| 144 | 82.167.2.143/32 | 82.167.2.143 to 82.167.2.143 | — | 1 |
| 145 | 82.167.2.144/32 | 82.167.2.144 to 82.167.2.144 | — | 1 |
| 146 | 82.167.2.145/32 | 82.167.2.145 to 82.167.2.145 | — | 1 |
| 147 | 82.167.2.146/32 | 82.167.2.146 to 82.167.2.146 | — | 1 |
| 148 | 82.167.2.147/32 | 82.167.2.147 to 82.167.2.147 | — | 1 |
| 149 | 82.167.2.148/32 | 82.167.2.148 to 82.167.2.148 | — | 1 |
| 150 | 82.167.2.149/32 | 82.167.2.149 to 82.167.2.149 | — | 1 |
| 151 | 82.167.2.150/32 | 82.167.2.150 to 82.167.2.150 | — | 1 |
| 152 | 82.167.2.151/32 | 82.167.2.151 to 82.167.2.151 | — | 1 |
| 153 | 82.167.2.152/32 | 82.167.2.152 to 82.167.2.152 | — | 1 |
| 154 | 82.167.2.153/32 | 82.167.2.153 to 82.167.2.153 | — | 1 |
| 155 | 82.167.2.154/32 | 82.167.2.154 to 82.167.2.154 | — | 1 |
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| 160 | 82.167.2.159/32 | 82.167.2.159 to 82.167.2.159 | — | 1 |
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| 167 | 82.167.2.166/32 | 82.167.2.166 to 82.167.2.166 | — | 1 |
| 168 | 82.167.2.167/32 | 82.167.2.167 to 82.167.2.167 | — | 1 |
| 169 | 82.167.2.168/32 | 82.167.2.168 to 82.167.2.168 | — | 1 |
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| 220 | 82.167.2.219/32 | 82.167.2.219 to 82.167.2.219 | — | 1 |
| 221 | 82.167.2.220/32 | 82.167.2.220 to 82.167.2.220 | — | 1 |
| 222 | 82.167.2.221/32 | 82.167.2.221 to 82.167.2.221 | — | 1 |
| 223 | 82.167.2.222/32 | 82.167.2.222 to 82.167.2.222 | — | 1 |
| 224 | 82.167.2.223/32 | 82.167.2.223 to 82.167.2.223 | — | 1 |
| 225 | 82.167.2.224/32 | 82.167.2.224 to 82.167.2.224 | — | 1 |
| 226 | 82.167.2.225/32 | 82.167.2.225 to 82.167.2.225 | — | 1 |
| 227 | 82.167.2.226/32 | 82.167.2.226 to 82.167.2.226 | — | 1 |
| 228 | 82.167.2.227/32 | 82.167.2.227 to 82.167.2.227 | — | 1 |
| 229 | 82.167.2.228/32 | 82.167.2.228 to 82.167.2.228 | — | 1 |
| 230 | 82.167.2.229/32 | 82.167.2.229 to 82.167.2.229 | — | 1 |
| 231 | 82.167.2.230/32 | 82.167.2.230 to 82.167.2.230 | — | 1 |
| 232 | 82.167.2.231/32 | 82.167.2.231 to 82.167.2.231 | — | 1 |
| 233 | 82.167.2.232/32 | 82.167.2.232 to 82.167.2.232 | — | 1 |
| 234 | 82.167.2.233/32 | 82.167.2.233 to 82.167.2.233 | — | 1 |
| 235 | 82.167.2.234/32 | 82.167.2.234 to 82.167.2.234 | — | 1 |
| 236 | 82.167.2.235/32 | 82.167.2.235 to 82.167.2.235 | — | 1 |
| 237 | 82.167.2.236/32 | 82.167.2.236 to 82.167.2.236 | — | 1 |
| 238 | 82.167.2.237/32 | 82.167.2.237 to 82.167.2.237 | — | 1 |
| 239 | 82.167.2.238/32 | 82.167.2.238 to 82.167.2.238 | — | 1 |
| 240 | 82.167.2.239/32 | 82.167.2.239 to 82.167.2.239 | — | 1 |
| 241 | 82.167.2.240/32 | 82.167.2.240 to 82.167.2.240 | — | 1 |
| 242 | 82.167.2.241/32 | 82.167.2.241 to 82.167.2.241 | — | 1 |
| 243 | 82.167.2.242/32 | 82.167.2.242 to 82.167.2.242 | — | 1 |
| 244 | 82.167.2.243/32 | 82.167.2.243 to 82.167.2.243 | — | 1 |
| 245 | 82.167.2.244/32 | 82.167.2.244 to 82.167.2.244 | — | 1 |
| 246 | 82.167.2.245/32 | 82.167.2.245 to 82.167.2.245 | — | 1 |
| 247 | 82.167.2.246/32 | 82.167.2.246 to 82.167.2.246 | — | 1 |
| 248 | 82.167.2.247/32 | 82.167.2.247 to 82.167.2.247 | — | 1 |
| 249 | 82.167.2.248/32 | 82.167.2.248 to 82.167.2.248 | — | 1 |
| 250 | 82.167.2.249/32 | 82.167.2.249 to 82.167.2.249 | — | 1 |
| 251 | 82.167.2.250/32 | 82.167.2.250 to 82.167.2.250 | — | 1 |
| 252 | 82.167.2.251/32 | 82.167.2.251 to 82.167.2.251 | — | 1 |
| 253 | 82.167.2.252/32 | 82.167.2.252 to 82.167.2.252 | — | 1 |
| 254 | 82.167.2.253/32 | 82.167.2.253 to 82.167.2.253 | — | 1 |
| 255 | 82.167.2.254/32 | 82.167.2.254 to 82.167.2.254 | — | 1 |
| 256 | 82.167.2.255/32 | 82.167.2.255 to 82.167.2.255 | — | 1 |
IPv4 CIDR reference (/0 to /32)
| Prefix | Subnet mask | Wildcard | Addresses | Usable hosts | Size | Typical use |
|---|---|---|---|---|---|---|
| /0 | 0.0.0.0 | 255.255.255.255 | 4,294,967,296 | 4,294,967,294 | 16,777,216 × /24 | |
| /1 | 128.0.0.0 | 127.255.255.255 | 2,147,483,648 | 2,147,483,646 | 8,388,608 × /24 | |
| /2 | 192.0.0.0 | 63.255.255.255 | 1,073,741,824 | 1,073,741,822 | 4,194,304 × /24 | |
| /3 | 224.0.0.0 | 31.255.255.255 | 536,870,912 | 536,870,910 | 2,097,152 × /24 | |
| /4 | 240.0.0.0 | 15.255.255.255 | 268,435,456 | 268,435,454 | 1,048,576 × /24 | |
| /5 | 248.0.0.0 | 7.255.255.255 | 134,217,728 | 134,217,726 | 524,288 × /24 | |
| /6 | 252.0.0.0 | 3.255.255.255 | 67,108,864 | 67,108,862 | 262,144 × /24 | |
| /7 | 254.0.0.0 | 1.255.255.255 | 33,554,432 | 33,554,430 | 131,072 × /24 | |
| /8 | 255.0.0.0 | 0.255.255.255 | 16,777,216 | 16,777,214 | 65,536 × /24 | Old class A; 10.0.0.0/8 |
| /9 | 255.128.0.0 | 0.127.255.255 | 8,388,608 | 8,388,606 | 32,768 × /24 | |
| /10 | 255.192.0.0 | 0.63.255.255 | 4,194,304 | 4,194,302 | 16,384 × /24 | |
| /11 | 255.224.0.0 | 0.31.255.255 | 2,097,152 | 2,097,150 | 8,192 × /24 | |
| /12 | 255.240.0.0 | 0.15.255.255 | 1,048,576 | 1,048,574 | 4,096 × /24 | 172.16.0.0/12 |
| /13 | 255.248.0.0 | 0.7.255.255 | 524,288 | 524,286 | 2,048 × /24 | |
| /14 | 255.252.0.0 | 0.3.255.255 | 262,144 | 262,142 | 1,024 × /24 | |
| /15 | 255.254.0.0 | 0.1.255.255 | 131,072 | 131,070 | 512 × /24 | |
| /16 | 255.255.0.0 | 0.0.255.255 | 65,536 | 65,534 | 256 × /24 | Old class B; 192.168.0.0/16 |
| /17 | 255.255.128.0 | 0.0.127.255 | 32,768 | 32,766 | 128 × /24 | |
| /18 | 255.255.192.0 | 0.0.63.255 | 16,384 | 16,382 | 64 × /24 | |
| /19 | 255.255.224.0 | 0.0.31.255 | 8,192 | 8,190 | 32 × /24 | |
| /20 | 255.255.240.0 | 0.0.15.255 | 4,096 | 4,094 | 16 × /24 | |
| /21 | 255.255.248.0 | 0.0.7.255 | 2,048 | 2,046 | 8 × /24 | |
| /22 | 255.255.252.0 | 0.0.3.255 | 1,024 | 1,022 | 4 × /24 | Large office or guest Wi-Fi (1,022 hosts) |
| /23 | 255.255.254.0 | 0.0.1.255 | 512 | 510 | 2 × /24 | Larger office LAN (510 hosts) |
| /24 | 255.255.255.0 | 0.0.0.255 | 256 | 254 | 1 × /24 | Typical office LAN (old class C) |
| /25 | 255.255.255.128 | 0.0.0.127 | 128 | 126 | 1/2 of a /24 | Smaller LAN or VLAN |
| /26 | 255.255.255.192 | 0.0.0.63 | 64 | 62 | 1/4 of a /24 | Smaller LAN or VLAN |
| /27 | 255.255.255.224 | 0.0.0.31 | 32 | 30 | 1/8 of a /24 | Small VLAN, phones, cameras |
| /28 | 255.255.255.240 | 0.0.0.15 | 16 | 14 | 1/16 of a /24 | Small VLAN, phones, cameras |
| /29 | 255.255.255.248 | 0.0.0.7 | 8 | 6 | 1/32 of a /24 | Small fixed public block (5 usable) |
| /30 | 255.255.255.252 | 0.0.0.3 | 4 | 2 | 1/64 of a /24 | Point-to-point (old style) |
| /31 | 255.255.255.254 | 0.0.0.1 | 2 | 2 | 1/128 of a /24 | Point-to-point link (RFC 3021) |
| /32 | 255.255.255.255 | 0.0.0.0 | 1 | 1 | 1/256 of a /24 | One host |
IPv6 prefix reference
| Prefix | Addresses | /64 LANs | /48 sites | Nibble | Typical use |
|---|---|---|---|---|---|
| /3 | 42,535,295,865,117,307,932,921,825,928,971,026,432 (2^125) | 2,305,843,009,213,693,952 | 35,184,372,088,832 | No | All global unicast (2000::/3) |
| /16 | 5,192,296,858,534,827,628,530,496,329,220,096 (2^112) | 281,474,976,710,656 | 4,294,967,296 | Yes | |
| /20 | 324,518,553,658,426,726,783,156,020,576,256 (2^108) | 17,592,186,044,416 | 268,435,456 | Yes | Large provider allocation (RIPE minimum for some) |
| /29 | 633,825,300,114,114,700,748,351,602,688 (2^99) | 34,359,738,368 | 524,288 | No | RIPE allocation to a provider (often) |
| /32 | 79,228,162,514,264,337,593,543,950,336 (2^96) | 4,294,967,296 | 65,536 | Yes | Provider allocation (RIPE default) |
| /36 | 4,951,760,157,141,521,099,596,496,896 (2^92) | 268,435,456 | 4,096 | Yes | |
| /40 | 309,485,009,821,345,068,724,781,056 (2^88) | 16,777,216 | 256 | Yes | |
| /44 | 19,342,813,113,834,066,795,298,816 (2^84) | 1,048,576 | 16 | Yes | |
| /48 | 1,208,925,819,614,629,174,706,176 (2^80) | 65,536 | 1 | Yes | One site or organisation (RIPE PI / assignment) |
| /52 | 75,557,863,725,914,323,419,136 (2^76) | 4,096 | Yes | ||
| /56 | 4,722,366,482,869,645,213,696 (2^72) | 256 | Yes | Small site or home (common provider assignment) | |
| /60 | 295,147,905,179,352,825,856 (2^68) | 16 | Yes | Some home broadband (16 LANs) | |
| /64 | 18,446,744,073,709,551,616 (2^64) | 1 | Yes | One LAN or VLAN (needed for SLAAC) | |
| /72 | 72,057,594,037,927,936 (2^56) | 1/256 of a /64 | Yes | ||
| /80 | 281,474,976,710,656 (2^48) | 1/65,536 of a /64 | Yes | ||
| /96 | 4,294,967,296 | 1/4,294,967,296 of a /64 | Yes | Embeds an IPv4 address (NAT64) | |
| /112 | 65,536 | 1/281,474,976,710,656 of a /64 | Yes | ||
| /120 | 256 | 1/72,057,594,037,927,936 of a /64 | Yes | ||
| /124 | 16 | 1/1,152,921,504,606,846,976 of a /64 | Yes | ||
| /126 | 4 | 1/4,611,686,018,427,387,904 of a /64 | No | ||
| /127 | 2 | 1/9,223,372,036,854,775,808 of a /64 | No | Point-to-point link (RFC 6164) | |
| /128 | 1 | 1/18,446,744,073,709,551,616 of a /64 | Yes | One host or loopback |
Private and special ranges
IPv4
| Range | Name | What it is |
|---|---|---|
255.255.255.255/32 | Limited broadcast | Every host on the local network |
0.0.0.0/8 | This network | Not routed; 0.0.0.0 means "any address" in settings |
10.0.0.0/8 | Private (RFC 1918) | Office and home networks; not routed on the internet |
100.64.0.0/10 | Shared address space (CGNAT) | Used by providers behind carrier-grade NAT (RFC 6598) |
127.0.0.0/8 | Loopback | This computer |
169.254.0.0/16 | Link-local (APIPA) | Self-assigned when no DHCP server answers |
172.16.0.0/12 | Private (RFC 1918) | Office and home networks; not routed on the internet |
192.0.0.0/24 | IETF protocol assignments | Special uses such as DS-Lite |
192.0.2.0/24 | Documentation (TEST-NET-1) | For examples; never used on a network |
192.88.99.0/24 | 6to4 relay (deprecated) | Formerly anycast for 6to4 |
192.168.0.0/16 | Private (RFC 1918) | Office and home networks; not routed on the internet |
198.18.0.0/15 | Benchmarking | Network equipment testing (RFC 2544) |
198.51.100.0/24 | Documentation (TEST-NET-2) | For examples; never used on a network |
203.0.113.0/24 | Documentation (TEST-NET-3) | For examples; never used on a network |
224.0.0.0/4 | Multicast | One-to-many traffic, such as IPTV and routing protocols |
240.0.0.0/4 | Reserved | Future use; not usable on most systems |
IPv6
| Range | Name | What it is |
|---|---|---|
::/128 | Unspecified | No address; :: means "any address" in settings |
::1/128 | Loopback | This computer |
::ffff:0:0/96 | IPv4-mapped | An IPv4 address written as IPv6 |
64:ff9b::/96 | NAT64 | IPv4 addresses reached through a NAT64 gateway |
100::/64 | Discard only | Traffic sent here is dropped (RFC 6666) |
2001:db8::/32 | Documentation | For examples; never used on a network |
2001::/32 | Teredo | IPv6 tunnelled over IPv4 UDP |
2002::/16 | 6to4 | IPv6 tunnelled over IPv4 (largely retired) |
3fff::/20 | Documentation | For examples (RFC 9637) |
fc00::/7 | Unique local (ULA) | Private IPv6, like RFC 1918; usually fd00::/8 |
fe80::/10 | Link-local | Every IPv6 interface has one; not routed |
ff00::/8 | Multicast | One-to-many traffic; replaces broadcast |
2000::/3 | Global unicast | Public internet addresses |