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)10.2.0.0/15
network10.2.0.0/15
broadcast10.3.255.255
first host10.2.0.1
last host10.3.255.254
subnet mask255.254.0.0
wildcard0.1.255.255
addresses131,072
usable hosts131,070
classA
ipcalc 10.2.0.0/15
address00001010.00000010.00000000.00000000
subnet mask11111111.11111110.00000000.00000000
network00001010.00000010.00000000.00000000
broadcast00001010.00000011.11111111.11111111
green = network part, grey = host part
hex0x0a020000
decimal167903232
reverse dns0.0.2.10.in-addr.arpa
ipv4-mapped::ffff:a02:0
/15 split into /23 · 256 subnets
close ×| # | network | host range | broadcast |
|---|---|---|---|
| 1 | 10.2.0.0/23 | 10.2.0.1 – 10.2.1.254 | 10.2.1.255 |
| 2 | 10.2.2.0/23 | 10.2.2.1 – 10.2.3.254 | 10.2.3.255 |
| 3 | 10.2.4.0/23 | 10.2.4.1 – 10.2.5.254 | 10.2.5.255 |
| 4 | 10.2.6.0/23 | 10.2.6.1 – 10.2.7.254 | 10.2.7.255 |
| 5 | 10.2.8.0/23 | 10.2.8.1 – 10.2.9.254 | 10.2.9.255 |
| 6 | 10.2.10.0/23 | 10.2.10.1 – 10.2.11.254 | 10.2.11.255 |
| 7 | 10.2.12.0/23 | 10.2.12.1 – 10.2.13.254 | 10.2.13.255 |
| 8 | 10.2.14.0/23 | 10.2.14.1 – 10.2.15.254 | 10.2.15.255 |
| 9 | 10.2.16.0/23 | 10.2.16.1 – 10.2.17.254 | 10.2.17.255 |
| 10 | 10.2.18.0/23 | 10.2.18.1 – 10.2.19.254 | 10.2.19.255 |
| 11 | 10.2.20.0/23 | 10.2.20.1 – 10.2.21.254 | 10.2.21.255 |
| 12 | 10.2.22.0/23 | 10.2.22.1 – 10.2.23.254 | 10.2.23.255 |
| 13 | 10.2.24.0/23 | 10.2.24.1 – 10.2.25.254 | 10.2.25.255 |
| 14 | 10.2.26.0/23 | 10.2.26.1 – 10.2.27.254 | 10.2.27.255 |
| 15 | 10.2.28.0/23 | 10.2.28.1 – 10.2.29.254 | 10.2.29.255 |
| 16 | 10.2.30.0/23 | 10.2.30.1 – 10.2.31.254 | 10.2.31.255 |
| 17 | 10.2.32.0/23 | 10.2.32.1 – 10.2.33.254 | 10.2.33.255 |
| 18 | 10.2.34.0/23 | 10.2.34.1 – 10.2.35.254 | 10.2.35.255 |
| 19 | 10.2.36.0/23 | 10.2.36.1 – 10.2.37.254 | 10.2.37.255 |
| 20 | 10.2.38.0/23 | 10.2.38.1 – 10.2.39.254 | 10.2.39.255 |
| 21 | 10.2.40.0/23 | 10.2.40.1 – 10.2.41.254 | 10.2.41.255 |
| 22 | 10.2.42.0/23 | 10.2.42.1 – 10.2.43.254 | 10.2.43.255 |
| 23 | 10.2.44.0/23 | 10.2.44.1 – 10.2.45.254 | 10.2.45.255 |
| 24 | 10.2.46.0/23 | 10.2.46.1 – 10.2.47.254 | 10.2.47.255 |
| 25 | 10.2.48.0/23 | 10.2.48.1 – 10.2.49.254 | 10.2.49.255 |
| 26 | 10.2.50.0/23 | 10.2.50.1 – 10.2.51.254 | 10.2.51.255 |
| 27 | 10.2.52.0/23 | 10.2.52.1 – 10.2.53.254 | 10.2.53.255 |
| 28 | 10.2.54.0/23 | 10.2.54.1 – 10.2.55.254 | 10.2.55.255 |
| 29 | 10.2.56.0/23 | 10.2.56.1 – 10.2.57.254 | 10.2.57.255 |
| 30 | 10.2.58.0/23 | 10.2.58.1 – 10.2.59.254 | 10.2.59.255 |
| 31 | 10.2.60.0/23 | 10.2.60.1 – 10.2.61.254 | 10.2.61.255 |
| 32 | 10.2.62.0/23 | 10.2.62.1 – 10.2.63.254 | 10.2.63.255 |
| 33 | 10.2.64.0/23 | 10.2.64.1 – 10.2.65.254 | 10.2.65.255 |
| 34 | 10.2.66.0/23 | 10.2.66.1 – 10.2.67.254 | 10.2.67.255 |
| 35 | 10.2.68.0/23 | 10.2.68.1 – 10.2.69.254 | 10.2.69.255 |
| 36 | 10.2.70.0/23 | 10.2.70.1 – 10.2.71.254 | 10.2.71.255 |
| 37 | 10.2.72.0/23 | 10.2.72.1 – 10.2.73.254 | 10.2.73.255 |
| 38 | 10.2.74.0/23 | 10.2.74.1 – 10.2.75.254 | 10.2.75.255 |
| 39 | 10.2.76.0/23 | 10.2.76.1 – 10.2.77.254 | 10.2.77.255 |
| 40 | 10.2.78.0/23 | 10.2.78.1 – 10.2.79.254 | 10.2.79.255 |
| 41 | 10.2.80.0/23 | 10.2.80.1 – 10.2.81.254 | 10.2.81.255 |
| 42 | 10.2.82.0/23 | 10.2.82.1 – 10.2.83.254 | 10.2.83.255 |
| 43 | 10.2.84.0/23 | 10.2.84.1 – 10.2.85.254 | 10.2.85.255 |
| 44 | 10.2.86.0/23 | 10.2.86.1 – 10.2.87.254 | 10.2.87.255 |
| 45 | 10.2.88.0/23 | 10.2.88.1 – 10.2.89.254 | 10.2.89.255 |
| 46 | 10.2.90.0/23 | 10.2.90.1 – 10.2.91.254 | 10.2.91.255 |
| 47 | 10.2.92.0/23 | 10.2.92.1 – 10.2.93.254 | 10.2.93.255 |
| 48 | 10.2.94.0/23 | 10.2.94.1 – 10.2.95.254 | 10.2.95.255 |
| 49 | 10.2.96.0/23 | 10.2.96.1 – 10.2.97.254 | 10.2.97.255 |
| 50 | 10.2.98.0/23 | 10.2.98.1 – 10.2.99.254 | 10.2.99.255 |
| 51 | 10.2.100.0/23 | 10.2.100.1 – 10.2.101.254 | 10.2.101.255 |
| 52 | 10.2.102.0/23 | 10.2.102.1 – 10.2.103.254 | 10.2.103.255 |
| 53 | 10.2.104.0/23 | 10.2.104.1 – 10.2.105.254 | 10.2.105.255 |
| 54 | 10.2.106.0/23 | 10.2.106.1 – 10.2.107.254 | 10.2.107.255 |
| 55 | 10.2.108.0/23 | 10.2.108.1 – 10.2.109.254 | 10.2.109.255 |
| 56 | 10.2.110.0/23 | 10.2.110.1 – 10.2.111.254 | 10.2.111.255 |
| 57 | 10.2.112.0/23 | 10.2.112.1 – 10.2.113.254 | 10.2.113.255 |
| 58 | 10.2.114.0/23 | 10.2.114.1 – 10.2.115.254 | 10.2.115.255 |
| 59 | 10.2.116.0/23 | 10.2.116.1 – 10.2.117.254 | 10.2.117.255 |
| 60 | 10.2.118.0/23 | 10.2.118.1 – 10.2.119.254 | 10.2.119.255 |
| 61 | 10.2.120.0/23 | 10.2.120.1 – 10.2.121.254 | 10.2.121.255 |
| 62 | 10.2.122.0/23 | 10.2.122.1 – 10.2.123.254 | 10.2.123.255 |
| 63 | 10.2.124.0/23 | 10.2.124.1 – 10.2.125.254 | 10.2.125.255 |
| 64 | 10.2.126.0/23 | 10.2.126.1 – 10.2.127.254 | 10.2.127.255 |
| 65 | 10.2.128.0/23 | 10.2.128.1 – 10.2.129.254 | 10.2.129.255 |
| 66 | 10.2.130.0/23 | 10.2.130.1 – 10.2.131.254 | 10.2.131.255 |
| 67 | 10.2.132.0/23 | 10.2.132.1 – 10.2.133.254 | 10.2.133.255 |
| 68 | 10.2.134.0/23 | 10.2.134.1 – 10.2.135.254 | 10.2.135.255 |
| 69 | 10.2.136.0/23 | 10.2.136.1 – 10.2.137.254 | 10.2.137.255 |
| 70 | 10.2.138.0/23 | 10.2.138.1 – 10.2.139.254 | 10.2.139.255 |
| 71 | 10.2.140.0/23 | 10.2.140.1 – 10.2.141.254 | 10.2.141.255 |
| 72 | 10.2.142.0/23 | 10.2.142.1 – 10.2.143.254 | 10.2.143.255 |
| 73 | 10.2.144.0/23 | 10.2.144.1 – 10.2.145.254 | 10.2.145.255 |
| 74 | 10.2.146.0/23 | 10.2.146.1 – 10.2.147.254 | 10.2.147.255 |
| 75 | 10.2.148.0/23 | 10.2.148.1 – 10.2.149.254 | 10.2.149.255 |
| 76 | 10.2.150.0/23 | 10.2.150.1 – 10.2.151.254 | 10.2.151.255 |
| 77 | 10.2.152.0/23 | 10.2.152.1 – 10.2.153.254 | 10.2.153.255 |
| 78 | 10.2.154.0/23 | 10.2.154.1 – 10.2.155.254 | 10.2.155.255 |
| 79 | 10.2.156.0/23 | 10.2.156.1 – 10.2.157.254 | 10.2.157.255 |
| 80 | 10.2.158.0/23 | 10.2.158.1 – 10.2.159.254 | 10.2.159.255 |
| 81 | 10.2.160.0/23 | 10.2.160.1 – 10.2.161.254 | 10.2.161.255 |
| 82 | 10.2.162.0/23 | 10.2.162.1 – 10.2.163.254 | 10.2.163.255 |
| 83 | 10.2.164.0/23 | 10.2.164.1 – 10.2.165.254 | 10.2.165.255 |
| 84 | 10.2.166.0/23 | 10.2.166.1 – 10.2.167.254 | 10.2.167.255 |
| 85 | 10.2.168.0/23 | 10.2.168.1 – 10.2.169.254 | 10.2.169.255 |
| 86 | 10.2.170.0/23 | 10.2.170.1 – 10.2.171.254 | 10.2.171.255 |
| 87 | 10.2.172.0/23 | 10.2.172.1 – 10.2.173.254 | 10.2.173.255 |
| 88 | 10.2.174.0/23 | 10.2.174.1 – 10.2.175.254 | 10.2.175.255 |
| 89 | 10.2.176.0/23 | 10.2.176.1 – 10.2.177.254 | 10.2.177.255 |
| 90 | 10.2.178.0/23 | 10.2.178.1 – 10.2.179.254 | 10.2.179.255 |
| 91 | 10.2.180.0/23 | 10.2.180.1 – 10.2.181.254 | 10.2.181.255 |
| 92 | 10.2.182.0/23 | 10.2.182.1 – 10.2.183.254 | 10.2.183.255 |
| 93 | 10.2.184.0/23 | 10.2.184.1 – 10.2.185.254 | 10.2.185.255 |
| 94 | 10.2.186.0/23 | 10.2.186.1 – 10.2.187.254 | 10.2.187.255 |
| 95 | 10.2.188.0/23 | 10.2.188.1 – 10.2.189.254 | 10.2.189.255 |
| 96 | 10.2.190.0/23 | 10.2.190.1 – 10.2.191.254 | 10.2.191.255 |
| 97 | 10.2.192.0/23 | 10.2.192.1 – 10.2.193.254 | 10.2.193.255 |
| 98 | 10.2.194.0/23 | 10.2.194.1 – 10.2.195.254 | 10.2.195.255 |
| 99 | 10.2.196.0/23 | 10.2.196.1 – 10.2.197.254 | 10.2.197.255 |
| 100 | 10.2.198.0/23 | 10.2.198.1 – 10.2.199.254 | 10.2.199.255 |
| 101 | 10.2.200.0/23 | 10.2.200.1 – 10.2.201.254 | 10.2.201.255 |
| 102 | 10.2.202.0/23 | 10.2.202.1 – 10.2.203.254 | 10.2.203.255 |
| 103 | 10.2.204.0/23 | 10.2.204.1 – 10.2.205.254 | 10.2.205.255 |
| 104 | 10.2.206.0/23 | 10.2.206.1 – 10.2.207.254 | 10.2.207.255 |
| 105 | 10.2.208.0/23 | 10.2.208.1 – 10.2.209.254 | 10.2.209.255 |
| 106 | 10.2.210.0/23 | 10.2.210.1 – 10.2.211.254 | 10.2.211.255 |
| 107 | 10.2.212.0/23 | 10.2.212.1 – 10.2.213.254 | 10.2.213.255 |
| 108 | 10.2.214.0/23 | 10.2.214.1 – 10.2.215.254 | 10.2.215.255 |
| 109 | 10.2.216.0/23 | 10.2.216.1 – 10.2.217.254 | 10.2.217.255 |
| 110 | 10.2.218.0/23 | 10.2.218.1 – 10.2.219.254 | 10.2.219.255 |
| 111 | 10.2.220.0/23 | 10.2.220.1 – 10.2.221.254 | 10.2.221.255 |
| 112 | 10.2.222.0/23 | 10.2.222.1 – 10.2.223.254 | 10.2.223.255 |
| 113 | 10.2.224.0/23 | 10.2.224.1 – 10.2.225.254 | 10.2.225.255 |
| 114 | 10.2.226.0/23 | 10.2.226.1 – 10.2.227.254 | 10.2.227.255 |
| 115 | 10.2.228.0/23 | 10.2.228.1 – 10.2.229.254 | 10.2.229.255 |
| 116 | 10.2.230.0/23 | 10.2.230.1 – 10.2.231.254 | 10.2.231.255 |
| 117 | 10.2.232.0/23 | 10.2.232.1 – 10.2.233.254 | 10.2.233.255 |
| 118 | 10.2.234.0/23 | 10.2.234.1 – 10.2.235.254 | 10.2.235.255 |
| 119 | 10.2.236.0/23 | 10.2.236.1 – 10.2.237.254 | 10.2.237.255 |
| 120 | 10.2.238.0/23 | 10.2.238.1 – 10.2.239.254 | 10.2.239.255 |
| 121 | 10.2.240.0/23 | 10.2.240.1 – 10.2.241.254 | 10.2.241.255 |
| 122 | 10.2.242.0/23 | 10.2.242.1 – 10.2.243.254 | 10.2.243.255 |
| 123 | 10.2.244.0/23 | 10.2.244.1 – 10.2.245.254 | 10.2.245.255 |
| 124 | 10.2.246.0/23 | 10.2.246.1 – 10.2.247.254 | 10.2.247.255 |
| 125 | 10.2.248.0/23 | 10.2.248.1 – 10.2.249.254 | 10.2.249.255 |
| 126 | 10.2.250.0/23 | 10.2.250.1 – 10.2.251.254 | 10.2.251.255 |
| 127 | 10.2.252.0/23 | 10.2.252.1 – 10.2.253.254 | 10.2.253.255 |
| 128 | 10.2.254.0/23 | 10.2.254.1 – 10.2.255.254 | 10.2.255.255 |
| 129 | 10.3.0.0/23 | 10.3.0.1 – 10.3.1.254 | 10.3.1.255 |
| 130 | 10.3.2.0/23 | 10.3.2.1 – 10.3.3.254 | 10.3.3.255 |
| 131 | 10.3.4.0/23 | 10.3.4.1 – 10.3.5.254 | 10.3.5.255 |
| 132 | 10.3.6.0/23 | 10.3.6.1 – 10.3.7.254 | 10.3.7.255 |
| 133 | 10.3.8.0/23 | 10.3.8.1 – 10.3.9.254 | 10.3.9.255 |
| 134 | 10.3.10.0/23 | 10.3.10.1 – 10.3.11.254 | 10.3.11.255 |
| 135 | 10.3.12.0/23 | 10.3.12.1 – 10.3.13.254 | 10.3.13.255 |
| 136 | 10.3.14.0/23 | 10.3.14.1 – 10.3.15.254 | 10.3.15.255 |
| 137 | 10.3.16.0/23 | 10.3.16.1 – 10.3.17.254 | 10.3.17.255 |
| 138 | 10.3.18.0/23 | 10.3.18.1 – 10.3.19.254 | 10.3.19.255 |
| 139 | 10.3.20.0/23 | 10.3.20.1 – 10.3.21.254 | 10.3.21.255 |
| 140 | 10.3.22.0/23 | 10.3.22.1 – 10.3.23.254 | 10.3.23.255 |
| 141 | 10.3.24.0/23 | 10.3.24.1 – 10.3.25.254 | 10.3.25.255 |
| 142 | 10.3.26.0/23 | 10.3.26.1 – 10.3.27.254 | 10.3.27.255 |
| 143 | 10.3.28.0/23 | 10.3.28.1 – 10.3.29.254 | 10.3.29.255 |
| 144 | 10.3.30.0/23 | 10.3.30.1 – 10.3.31.254 | 10.3.31.255 |
| 145 | 10.3.32.0/23 | 10.3.32.1 – 10.3.33.254 | 10.3.33.255 |
| 146 | 10.3.34.0/23 | 10.3.34.1 – 10.3.35.254 | 10.3.35.255 |
| 147 | 10.3.36.0/23 | 10.3.36.1 – 10.3.37.254 | 10.3.37.255 |
| 148 | 10.3.38.0/23 | 10.3.38.1 – 10.3.39.254 | 10.3.39.255 |
| 149 | 10.3.40.0/23 | 10.3.40.1 – 10.3.41.254 | 10.3.41.255 |
| 150 | 10.3.42.0/23 | 10.3.42.1 – 10.3.43.254 | 10.3.43.255 |
| 151 | 10.3.44.0/23 | 10.3.44.1 – 10.3.45.254 | 10.3.45.255 |
| 152 | 10.3.46.0/23 | 10.3.46.1 – 10.3.47.254 | 10.3.47.255 |
| 153 | 10.3.48.0/23 | 10.3.48.1 – 10.3.49.254 | 10.3.49.255 |
| 154 | 10.3.50.0/23 | 10.3.50.1 – 10.3.51.254 | 10.3.51.255 |
| 155 | 10.3.52.0/23 | 10.3.52.1 – 10.3.53.254 | 10.3.53.255 |
| 156 | 10.3.54.0/23 | 10.3.54.1 – 10.3.55.254 | 10.3.55.255 |
| 157 | 10.3.56.0/23 | 10.3.56.1 – 10.3.57.254 | 10.3.57.255 |
| 158 | 10.3.58.0/23 | 10.3.58.1 – 10.3.59.254 | 10.3.59.255 |
| 159 | 10.3.60.0/23 | 10.3.60.1 – 10.3.61.254 | 10.3.61.255 |
| 160 | 10.3.62.0/23 | 10.3.62.1 – 10.3.63.254 | 10.3.63.255 |
| 161 | 10.3.64.0/23 | 10.3.64.1 – 10.3.65.254 | 10.3.65.255 |
| 162 | 10.3.66.0/23 | 10.3.66.1 – 10.3.67.254 | 10.3.67.255 |
| 163 | 10.3.68.0/23 | 10.3.68.1 – 10.3.69.254 | 10.3.69.255 |
| 164 | 10.3.70.0/23 | 10.3.70.1 – 10.3.71.254 | 10.3.71.255 |
| 165 | 10.3.72.0/23 | 10.3.72.1 – 10.3.73.254 | 10.3.73.255 |
| 166 | 10.3.74.0/23 | 10.3.74.1 – 10.3.75.254 | 10.3.75.255 |
| 167 | 10.3.76.0/23 | 10.3.76.1 – 10.3.77.254 | 10.3.77.255 |
| 168 | 10.3.78.0/23 | 10.3.78.1 – 10.3.79.254 | 10.3.79.255 |
| 169 | 10.3.80.0/23 | 10.3.80.1 – 10.3.81.254 | 10.3.81.255 |
| 170 | 10.3.82.0/23 | 10.3.82.1 – 10.3.83.254 | 10.3.83.255 |
| 171 | 10.3.84.0/23 | 10.3.84.1 – 10.3.85.254 | 10.3.85.255 |
| 172 | 10.3.86.0/23 | 10.3.86.1 – 10.3.87.254 | 10.3.87.255 |
| 173 | 10.3.88.0/23 | 10.3.88.1 – 10.3.89.254 | 10.3.89.255 |
| 174 | 10.3.90.0/23 | 10.3.90.1 – 10.3.91.254 | 10.3.91.255 |
| 175 | 10.3.92.0/23 | 10.3.92.1 – 10.3.93.254 | 10.3.93.255 |
| 176 | 10.3.94.0/23 | 10.3.94.1 – 10.3.95.254 | 10.3.95.255 |
| 177 | 10.3.96.0/23 | 10.3.96.1 – 10.3.97.254 | 10.3.97.255 |
| 178 | 10.3.98.0/23 | 10.3.98.1 – 10.3.99.254 | 10.3.99.255 |
| 179 | 10.3.100.0/23 | 10.3.100.1 – 10.3.101.254 | 10.3.101.255 |
| 180 | 10.3.102.0/23 | 10.3.102.1 – 10.3.103.254 | 10.3.103.255 |
| 181 | 10.3.104.0/23 | 10.3.104.1 – 10.3.105.254 | 10.3.105.255 |
| 182 | 10.3.106.0/23 | 10.3.106.1 – 10.3.107.254 | 10.3.107.255 |
| 183 | 10.3.108.0/23 | 10.3.108.1 – 10.3.109.254 | 10.3.109.255 |
| 184 | 10.3.110.0/23 | 10.3.110.1 – 10.3.111.254 | 10.3.111.255 |
| 185 | 10.3.112.0/23 | 10.3.112.1 – 10.3.113.254 | 10.3.113.255 |
| 186 | 10.3.114.0/23 | 10.3.114.1 – 10.3.115.254 | 10.3.115.255 |
| 187 | 10.3.116.0/23 | 10.3.116.1 – 10.3.117.254 | 10.3.117.255 |
| 188 | 10.3.118.0/23 | 10.3.118.1 – 10.3.119.254 | 10.3.119.255 |
| 189 | 10.3.120.0/23 | 10.3.120.1 – 10.3.121.254 | 10.3.121.255 |
| 190 | 10.3.122.0/23 | 10.3.122.1 – 10.3.123.254 | 10.3.123.255 |
| 191 | 10.3.124.0/23 | 10.3.124.1 – 10.3.125.254 | 10.3.125.255 |
| 192 | 10.3.126.0/23 | 10.3.126.1 – 10.3.127.254 | 10.3.127.255 |
| 193 | 10.3.128.0/23 | 10.3.128.1 – 10.3.129.254 | 10.3.129.255 |
| 194 | 10.3.130.0/23 | 10.3.130.1 – 10.3.131.254 | 10.3.131.255 |
| 195 | 10.3.132.0/23 | 10.3.132.1 – 10.3.133.254 | 10.3.133.255 |
| 196 | 10.3.134.0/23 | 10.3.134.1 – 10.3.135.254 | 10.3.135.255 |
| 197 | 10.3.136.0/23 | 10.3.136.1 – 10.3.137.254 | 10.3.137.255 |
| 198 | 10.3.138.0/23 | 10.3.138.1 – 10.3.139.254 | 10.3.139.255 |
| 199 | 10.3.140.0/23 | 10.3.140.1 – 10.3.141.254 | 10.3.141.255 |
| 200 | 10.3.142.0/23 | 10.3.142.1 – 10.3.143.254 | 10.3.143.255 |
| 201 | 10.3.144.0/23 | 10.3.144.1 – 10.3.145.254 | 10.3.145.255 |
| 202 | 10.3.146.0/23 | 10.3.146.1 – 10.3.147.254 | 10.3.147.255 |
| 203 | 10.3.148.0/23 | 10.3.148.1 – 10.3.149.254 | 10.3.149.255 |
| 204 | 10.3.150.0/23 | 10.3.150.1 – 10.3.151.254 | 10.3.151.255 |
| 205 | 10.3.152.0/23 | 10.3.152.1 – 10.3.153.254 | 10.3.153.255 |
| 206 | 10.3.154.0/23 | 10.3.154.1 – 10.3.155.254 | 10.3.155.255 |
| 207 | 10.3.156.0/23 | 10.3.156.1 – 10.3.157.254 | 10.3.157.255 |
| 208 | 10.3.158.0/23 | 10.3.158.1 – 10.3.159.254 | 10.3.159.255 |
| 209 | 10.3.160.0/23 | 10.3.160.1 – 10.3.161.254 | 10.3.161.255 |
| 210 | 10.3.162.0/23 | 10.3.162.1 – 10.3.163.254 | 10.3.163.255 |
| 211 | 10.3.164.0/23 | 10.3.164.1 – 10.3.165.254 | 10.3.165.255 |
| 212 | 10.3.166.0/23 | 10.3.166.1 – 10.3.167.254 | 10.3.167.255 |
| 213 | 10.3.168.0/23 | 10.3.168.1 – 10.3.169.254 | 10.3.169.255 |
| 214 | 10.3.170.0/23 | 10.3.170.1 – 10.3.171.254 | 10.3.171.255 |
| 215 | 10.3.172.0/23 | 10.3.172.1 – 10.3.173.254 | 10.3.173.255 |
| 216 | 10.3.174.0/23 | 10.3.174.1 – 10.3.175.254 | 10.3.175.255 |
| 217 | 10.3.176.0/23 | 10.3.176.1 – 10.3.177.254 | 10.3.177.255 |
| 218 | 10.3.178.0/23 | 10.3.178.1 – 10.3.179.254 | 10.3.179.255 |
| 219 | 10.3.180.0/23 | 10.3.180.1 – 10.3.181.254 | 10.3.181.255 |
| 220 | 10.3.182.0/23 | 10.3.182.1 – 10.3.183.254 | 10.3.183.255 |
| 221 | 10.3.184.0/23 | 10.3.184.1 – 10.3.185.254 | 10.3.185.255 |
| 222 | 10.3.186.0/23 | 10.3.186.1 – 10.3.187.254 | 10.3.187.255 |
| 223 | 10.3.188.0/23 | 10.3.188.1 – 10.3.189.254 | 10.3.189.255 |
| 224 | 10.3.190.0/23 | 10.3.190.1 – 10.3.191.254 | 10.3.191.255 |
| 225 | 10.3.192.0/23 | 10.3.192.1 – 10.3.193.254 | 10.3.193.255 |
| 226 | 10.3.194.0/23 | 10.3.194.1 – 10.3.195.254 | 10.3.195.255 |
| 227 | 10.3.196.0/23 | 10.3.196.1 – 10.3.197.254 | 10.3.197.255 |
| 228 | 10.3.198.0/23 | 10.3.198.1 – 10.3.199.254 | 10.3.199.255 |
| 229 | 10.3.200.0/23 | 10.3.200.1 – 10.3.201.254 | 10.3.201.255 |
| 230 | 10.3.202.0/23 | 10.3.202.1 – 10.3.203.254 | 10.3.203.255 |
| 231 | 10.3.204.0/23 | 10.3.204.1 – 10.3.205.254 | 10.3.205.255 |
| 232 | 10.3.206.0/23 | 10.3.206.1 – 10.3.207.254 | 10.3.207.255 |
| 233 | 10.3.208.0/23 | 10.3.208.1 – 10.3.209.254 | 10.3.209.255 |
| 234 | 10.3.210.0/23 | 10.3.210.1 – 10.3.211.254 | 10.3.211.255 |
| 235 | 10.3.212.0/23 | 10.3.212.1 – 10.3.213.254 | 10.3.213.255 |
| 236 | 10.3.214.0/23 | 10.3.214.1 – 10.3.215.254 | 10.3.215.255 |
| 237 | 10.3.216.0/23 | 10.3.216.1 – 10.3.217.254 | 10.3.217.255 |
| 238 | 10.3.218.0/23 | 10.3.218.1 – 10.3.219.254 | 10.3.219.255 |
| 239 | 10.3.220.0/23 | 10.3.220.1 – 10.3.221.254 | 10.3.221.255 |
| 240 | 10.3.222.0/23 | 10.3.222.1 – 10.3.223.254 | 10.3.223.255 |
| 241 | 10.3.224.0/23 | 10.3.224.1 – 10.3.225.254 | 10.3.225.255 |
| 242 | 10.3.226.0/23 | 10.3.226.1 – 10.3.227.254 | 10.3.227.255 |
| 243 | 10.3.228.0/23 | 10.3.228.1 – 10.3.229.254 | 10.3.229.255 |
| 244 | 10.3.230.0/23 | 10.3.230.1 – 10.3.231.254 | 10.3.231.255 |
| 245 | 10.3.232.0/23 | 10.3.232.1 – 10.3.233.254 | 10.3.233.255 |
| 246 | 10.3.234.0/23 | 10.3.234.1 – 10.3.235.254 | 10.3.235.255 |
| 247 | 10.3.236.0/23 | 10.3.236.1 – 10.3.237.254 | 10.3.237.255 |
| 248 | 10.3.238.0/23 | 10.3.238.1 – 10.3.239.254 | 10.3.239.255 |
| 249 | 10.3.240.0/23 | 10.3.240.1 – 10.3.241.254 | 10.3.241.255 |
| 250 | 10.3.242.0/23 | 10.3.242.1 – 10.3.243.254 | 10.3.243.255 |
| 251 | 10.3.244.0/23 | 10.3.244.1 – 10.3.245.254 | 10.3.245.255 |
| 252 | 10.3.246.0/23 | 10.3.246.1 – 10.3.247.254 | 10.3.247.255 |
| 253 | 10.3.248.0/23 | 10.3.248.1 – 10.3.249.254 | 10.3.249.255 |
| 254 | 10.3.250.0/23 | 10.3.250.1 – 10.3.251.254 | 10.3.251.255 |
| 255 | 10.3.252.0/23 | 10.3.252.1 – 10.3.253.254 | 10.3.253.255 |
| 256 | 10.3.254.0/23 | 10.3.254.1 – 10.3.255.254 | 10.3.255.255 |
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 /15 |
|---|---|---|---|---|
| /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 | 1 |
| /16 | 255.255.0.0 | 65,536 | 65,534 | 2 split → |
| /17 | 255.255.128.0 | 32,768 | 32,766 | 4 split → |
| /18 | 255.255.192.0 | 16,384 | 16,382 | 8 split → |
| /19 | 255.255.224.0 | 8,192 | 8,190 | 16 split → |
| /20 | 255.255.240.0 | 4,096 | 4,094 | 32 split → |
| /21 | 255.255.248.0 | 2,048 | 2,046 | 64 split → |
| /22 | 255.255.252.0 | 1,024 | 1,022 | 128 split → |
| /23 | 255.255.254.0 | 512 | 510 | 256 split → |
| /24 | 255.255.255.0 | 256 | 254 | 512 split → |
| /25 | 255.255.255.128 | 128 | 126 | 1,024 split → |
| /26 | 255.255.255.192 | 64 | 62 | 2,048 split → |
| /27 | 255.255.255.224 | 32 | 30 | 4,096 split → |
| /28 | 255.255.255.240 | 16 | 14 | 8,192 split → |
| /29 | 255.255.255.248 | 8 | 6 | 16,384 split → |
| /30 | 255.255.255.252 | 4 | 2 | 32,768 split → |
| /31 | 255.255.255.254 | 2 | 2 | 65,536 split → |
| /32 | 255.255.255.255 | 1 | 1 | 131,072 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.