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)10.30.0.0/15
network10.30.0.0/15
broadcast10.31.255.255
first host10.30.0.1
last host10.31.255.254
subnet mask255.254.0.0
wildcard0.1.255.255
addresses131,072
usable hosts131,070
classA
ipcalc 10.30.0.0/15
address00001010.00011110.00000000.00000000
subnet mask11111111.11111110.00000000.00000000
network00001010.00011110.00000000.00000000
broadcast00001010.00011111.11111111.11111111
green = network part, grey = host part
hex0x0a1e0000
decimal169738240
reverse dns0.0.30.10.in-addr.arpa
ipv4-mapped::ffff:a1e:0
/15 split into /23 · 256 subnets
close ×| # | network | host range | broadcast |
|---|---|---|---|
| 1 | 10.30.0.0/23 | 10.30.0.1 – 10.30.1.254 | 10.30.1.255 |
| 2 | 10.30.2.0/23 | 10.30.2.1 – 10.30.3.254 | 10.30.3.255 |
| 3 | 10.30.4.0/23 | 10.30.4.1 – 10.30.5.254 | 10.30.5.255 |
| 4 | 10.30.6.0/23 | 10.30.6.1 – 10.30.7.254 | 10.30.7.255 |
| 5 | 10.30.8.0/23 | 10.30.8.1 – 10.30.9.254 | 10.30.9.255 |
| 6 | 10.30.10.0/23 | 10.30.10.1 – 10.30.11.254 | 10.30.11.255 |
| 7 | 10.30.12.0/23 | 10.30.12.1 – 10.30.13.254 | 10.30.13.255 |
| 8 | 10.30.14.0/23 | 10.30.14.1 – 10.30.15.254 | 10.30.15.255 |
| 9 | 10.30.16.0/23 | 10.30.16.1 – 10.30.17.254 | 10.30.17.255 |
| 10 | 10.30.18.0/23 | 10.30.18.1 – 10.30.19.254 | 10.30.19.255 |
| 11 | 10.30.20.0/23 | 10.30.20.1 – 10.30.21.254 | 10.30.21.255 |
| 12 | 10.30.22.0/23 | 10.30.22.1 – 10.30.23.254 | 10.30.23.255 |
| 13 | 10.30.24.0/23 | 10.30.24.1 – 10.30.25.254 | 10.30.25.255 |
| 14 | 10.30.26.0/23 | 10.30.26.1 – 10.30.27.254 | 10.30.27.255 |
| 15 | 10.30.28.0/23 | 10.30.28.1 – 10.30.29.254 | 10.30.29.255 |
| 16 | 10.30.30.0/23 | 10.30.30.1 – 10.30.31.254 | 10.30.31.255 |
| 17 | 10.30.32.0/23 | 10.30.32.1 – 10.30.33.254 | 10.30.33.255 |
| 18 | 10.30.34.0/23 | 10.30.34.1 – 10.30.35.254 | 10.30.35.255 |
| 19 | 10.30.36.0/23 | 10.30.36.1 – 10.30.37.254 | 10.30.37.255 |
| 20 | 10.30.38.0/23 | 10.30.38.1 – 10.30.39.254 | 10.30.39.255 |
| 21 | 10.30.40.0/23 | 10.30.40.1 – 10.30.41.254 | 10.30.41.255 |
| 22 | 10.30.42.0/23 | 10.30.42.1 – 10.30.43.254 | 10.30.43.255 |
| 23 | 10.30.44.0/23 | 10.30.44.1 – 10.30.45.254 | 10.30.45.255 |
| 24 | 10.30.46.0/23 | 10.30.46.1 – 10.30.47.254 | 10.30.47.255 |
| 25 | 10.30.48.0/23 | 10.30.48.1 – 10.30.49.254 | 10.30.49.255 |
| 26 | 10.30.50.0/23 | 10.30.50.1 – 10.30.51.254 | 10.30.51.255 |
| 27 | 10.30.52.0/23 | 10.30.52.1 – 10.30.53.254 | 10.30.53.255 |
| 28 | 10.30.54.0/23 | 10.30.54.1 – 10.30.55.254 | 10.30.55.255 |
| 29 | 10.30.56.0/23 | 10.30.56.1 – 10.30.57.254 | 10.30.57.255 |
| 30 | 10.30.58.0/23 | 10.30.58.1 – 10.30.59.254 | 10.30.59.255 |
| 31 | 10.30.60.0/23 | 10.30.60.1 – 10.30.61.254 | 10.30.61.255 |
| 32 | 10.30.62.0/23 | 10.30.62.1 – 10.30.63.254 | 10.30.63.255 |
| 33 | 10.30.64.0/23 | 10.30.64.1 – 10.30.65.254 | 10.30.65.255 |
| 34 | 10.30.66.0/23 | 10.30.66.1 – 10.30.67.254 | 10.30.67.255 |
| 35 | 10.30.68.0/23 | 10.30.68.1 – 10.30.69.254 | 10.30.69.255 |
| 36 | 10.30.70.0/23 | 10.30.70.1 – 10.30.71.254 | 10.30.71.255 |
| 37 | 10.30.72.0/23 | 10.30.72.1 – 10.30.73.254 | 10.30.73.255 |
| 38 | 10.30.74.0/23 | 10.30.74.1 – 10.30.75.254 | 10.30.75.255 |
| 39 | 10.30.76.0/23 | 10.30.76.1 – 10.30.77.254 | 10.30.77.255 |
| 40 | 10.30.78.0/23 | 10.30.78.1 – 10.30.79.254 | 10.30.79.255 |
| 41 | 10.30.80.0/23 | 10.30.80.1 – 10.30.81.254 | 10.30.81.255 |
| 42 | 10.30.82.0/23 | 10.30.82.1 – 10.30.83.254 | 10.30.83.255 |
| 43 | 10.30.84.0/23 | 10.30.84.1 – 10.30.85.254 | 10.30.85.255 |
| 44 | 10.30.86.0/23 | 10.30.86.1 – 10.30.87.254 | 10.30.87.255 |
| 45 | 10.30.88.0/23 | 10.30.88.1 – 10.30.89.254 | 10.30.89.255 |
| 46 | 10.30.90.0/23 | 10.30.90.1 – 10.30.91.254 | 10.30.91.255 |
| 47 | 10.30.92.0/23 | 10.30.92.1 – 10.30.93.254 | 10.30.93.255 |
| 48 | 10.30.94.0/23 | 10.30.94.1 – 10.30.95.254 | 10.30.95.255 |
| 49 | 10.30.96.0/23 | 10.30.96.1 – 10.30.97.254 | 10.30.97.255 |
| 50 | 10.30.98.0/23 | 10.30.98.1 – 10.30.99.254 | 10.30.99.255 |
| 51 | 10.30.100.0/23 | 10.30.100.1 – 10.30.101.254 | 10.30.101.255 |
| 52 | 10.30.102.0/23 | 10.30.102.1 – 10.30.103.254 | 10.30.103.255 |
| 53 | 10.30.104.0/23 | 10.30.104.1 – 10.30.105.254 | 10.30.105.255 |
| 54 | 10.30.106.0/23 | 10.30.106.1 – 10.30.107.254 | 10.30.107.255 |
| 55 | 10.30.108.0/23 | 10.30.108.1 – 10.30.109.254 | 10.30.109.255 |
| 56 | 10.30.110.0/23 | 10.30.110.1 – 10.30.111.254 | 10.30.111.255 |
| 57 | 10.30.112.0/23 | 10.30.112.1 – 10.30.113.254 | 10.30.113.255 |
| 58 | 10.30.114.0/23 | 10.30.114.1 – 10.30.115.254 | 10.30.115.255 |
| 59 | 10.30.116.0/23 | 10.30.116.1 – 10.30.117.254 | 10.30.117.255 |
| 60 | 10.30.118.0/23 | 10.30.118.1 – 10.30.119.254 | 10.30.119.255 |
| 61 | 10.30.120.0/23 | 10.30.120.1 – 10.30.121.254 | 10.30.121.255 |
| 62 | 10.30.122.0/23 | 10.30.122.1 – 10.30.123.254 | 10.30.123.255 |
| 63 | 10.30.124.0/23 | 10.30.124.1 – 10.30.125.254 | 10.30.125.255 |
| 64 | 10.30.126.0/23 | 10.30.126.1 – 10.30.127.254 | 10.30.127.255 |
| 65 | 10.30.128.0/23 | 10.30.128.1 – 10.30.129.254 | 10.30.129.255 |
| 66 | 10.30.130.0/23 | 10.30.130.1 – 10.30.131.254 | 10.30.131.255 |
| 67 | 10.30.132.0/23 | 10.30.132.1 – 10.30.133.254 | 10.30.133.255 |
| 68 | 10.30.134.0/23 | 10.30.134.1 – 10.30.135.254 | 10.30.135.255 |
| 69 | 10.30.136.0/23 | 10.30.136.1 – 10.30.137.254 | 10.30.137.255 |
| 70 | 10.30.138.0/23 | 10.30.138.1 – 10.30.139.254 | 10.30.139.255 |
| 71 | 10.30.140.0/23 | 10.30.140.1 – 10.30.141.254 | 10.30.141.255 |
| 72 | 10.30.142.0/23 | 10.30.142.1 – 10.30.143.254 | 10.30.143.255 |
| 73 | 10.30.144.0/23 | 10.30.144.1 – 10.30.145.254 | 10.30.145.255 |
| 74 | 10.30.146.0/23 | 10.30.146.1 – 10.30.147.254 | 10.30.147.255 |
| 75 | 10.30.148.0/23 | 10.30.148.1 – 10.30.149.254 | 10.30.149.255 |
| 76 | 10.30.150.0/23 | 10.30.150.1 – 10.30.151.254 | 10.30.151.255 |
| 77 | 10.30.152.0/23 | 10.30.152.1 – 10.30.153.254 | 10.30.153.255 |
| 78 | 10.30.154.0/23 | 10.30.154.1 – 10.30.155.254 | 10.30.155.255 |
| 79 | 10.30.156.0/23 | 10.30.156.1 – 10.30.157.254 | 10.30.157.255 |
| 80 | 10.30.158.0/23 | 10.30.158.1 – 10.30.159.254 | 10.30.159.255 |
| 81 | 10.30.160.0/23 | 10.30.160.1 – 10.30.161.254 | 10.30.161.255 |
| 82 | 10.30.162.0/23 | 10.30.162.1 – 10.30.163.254 | 10.30.163.255 |
| 83 | 10.30.164.0/23 | 10.30.164.1 – 10.30.165.254 | 10.30.165.255 |
| 84 | 10.30.166.0/23 | 10.30.166.1 – 10.30.167.254 | 10.30.167.255 |
| 85 | 10.30.168.0/23 | 10.30.168.1 – 10.30.169.254 | 10.30.169.255 |
| 86 | 10.30.170.0/23 | 10.30.170.1 – 10.30.171.254 | 10.30.171.255 |
| 87 | 10.30.172.0/23 | 10.30.172.1 – 10.30.173.254 | 10.30.173.255 |
| 88 | 10.30.174.0/23 | 10.30.174.1 – 10.30.175.254 | 10.30.175.255 |
| 89 | 10.30.176.0/23 | 10.30.176.1 – 10.30.177.254 | 10.30.177.255 |
| 90 | 10.30.178.0/23 | 10.30.178.1 – 10.30.179.254 | 10.30.179.255 |
| 91 | 10.30.180.0/23 | 10.30.180.1 – 10.30.181.254 | 10.30.181.255 |
| 92 | 10.30.182.0/23 | 10.30.182.1 – 10.30.183.254 | 10.30.183.255 |
| 93 | 10.30.184.0/23 | 10.30.184.1 – 10.30.185.254 | 10.30.185.255 |
| 94 | 10.30.186.0/23 | 10.30.186.1 – 10.30.187.254 | 10.30.187.255 |
| 95 | 10.30.188.0/23 | 10.30.188.1 – 10.30.189.254 | 10.30.189.255 |
| 96 | 10.30.190.0/23 | 10.30.190.1 – 10.30.191.254 | 10.30.191.255 |
| 97 | 10.30.192.0/23 | 10.30.192.1 – 10.30.193.254 | 10.30.193.255 |
| 98 | 10.30.194.0/23 | 10.30.194.1 – 10.30.195.254 | 10.30.195.255 |
| 99 | 10.30.196.0/23 | 10.30.196.1 – 10.30.197.254 | 10.30.197.255 |
| 100 | 10.30.198.0/23 | 10.30.198.1 – 10.30.199.254 | 10.30.199.255 |
| 101 | 10.30.200.0/23 | 10.30.200.1 – 10.30.201.254 | 10.30.201.255 |
| 102 | 10.30.202.0/23 | 10.30.202.1 – 10.30.203.254 | 10.30.203.255 |
| 103 | 10.30.204.0/23 | 10.30.204.1 – 10.30.205.254 | 10.30.205.255 |
| 104 | 10.30.206.0/23 | 10.30.206.1 – 10.30.207.254 | 10.30.207.255 |
| 105 | 10.30.208.0/23 | 10.30.208.1 – 10.30.209.254 | 10.30.209.255 |
| 106 | 10.30.210.0/23 | 10.30.210.1 – 10.30.211.254 | 10.30.211.255 |
| 107 | 10.30.212.0/23 | 10.30.212.1 – 10.30.213.254 | 10.30.213.255 |
| 108 | 10.30.214.0/23 | 10.30.214.1 – 10.30.215.254 | 10.30.215.255 |
| 109 | 10.30.216.0/23 | 10.30.216.1 – 10.30.217.254 | 10.30.217.255 |
| 110 | 10.30.218.0/23 | 10.30.218.1 – 10.30.219.254 | 10.30.219.255 |
| 111 | 10.30.220.0/23 | 10.30.220.1 – 10.30.221.254 | 10.30.221.255 |
| 112 | 10.30.222.0/23 | 10.30.222.1 – 10.30.223.254 | 10.30.223.255 |
| 113 | 10.30.224.0/23 | 10.30.224.1 – 10.30.225.254 | 10.30.225.255 |
| 114 | 10.30.226.0/23 | 10.30.226.1 – 10.30.227.254 | 10.30.227.255 |
| 115 | 10.30.228.0/23 | 10.30.228.1 – 10.30.229.254 | 10.30.229.255 |
| 116 | 10.30.230.0/23 | 10.30.230.1 – 10.30.231.254 | 10.30.231.255 |
| 117 | 10.30.232.0/23 | 10.30.232.1 – 10.30.233.254 | 10.30.233.255 |
| 118 | 10.30.234.0/23 | 10.30.234.1 – 10.30.235.254 | 10.30.235.255 |
| 119 | 10.30.236.0/23 | 10.30.236.1 – 10.30.237.254 | 10.30.237.255 |
| 120 | 10.30.238.0/23 | 10.30.238.1 – 10.30.239.254 | 10.30.239.255 |
| 121 | 10.30.240.0/23 | 10.30.240.1 – 10.30.241.254 | 10.30.241.255 |
| 122 | 10.30.242.0/23 | 10.30.242.1 – 10.30.243.254 | 10.30.243.255 |
| 123 | 10.30.244.0/23 | 10.30.244.1 – 10.30.245.254 | 10.30.245.255 |
| 124 | 10.30.246.0/23 | 10.30.246.1 – 10.30.247.254 | 10.30.247.255 |
| 125 | 10.30.248.0/23 | 10.30.248.1 – 10.30.249.254 | 10.30.249.255 |
| 126 | 10.30.250.0/23 | 10.30.250.1 – 10.30.251.254 | 10.30.251.255 |
| 127 | 10.30.252.0/23 | 10.30.252.1 – 10.30.253.254 | 10.30.253.255 |
| 128 | 10.30.254.0/23 | 10.30.254.1 – 10.30.255.254 | 10.30.255.255 |
| 129 | 10.31.0.0/23 | 10.31.0.1 – 10.31.1.254 | 10.31.1.255 |
| 130 | 10.31.2.0/23 | 10.31.2.1 – 10.31.3.254 | 10.31.3.255 |
| 131 | 10.31.4.0/23 | 10.31.4.1 – 10.31.5.254 | 10.31.5.255 |
| 132 | 10.31.6.0/23 | 10.31.6.1 – 10.31.7.254 | 10.31.7.255 |
| 133 | 10.31.8.0/23 | 10.31.8.1 – 10.31.9.254 | 10.31.9.255 |
| 134 | 10.31.10.0/23 | 10.31.10.1 – 10.31.11.254 | 10.31.11.255 |
| 135 | 10.31.12.0/23 | 10.31.12.1 – 10.31.13.254 | 10.31.13.255 |
| 136 | 10.31.14.0/23 | 10.31.14.1 – 10.31.15.254 | 10.31.15.255 |
| 137 | 10.31.16.0/23 | 10.31.16.1 – 10.31.17.254 | 10.31.17.255 |
| 138 | 10.31.18.0/23 | 10.31.18.1 – 10.31.19.254 | 10.31.19.255 |
| 139 | 10.31.20.0/23 | 10.31.20.1 – 10.31.21.254 | 10.31.21.255 |
| 140 | 10.31.22.0/23 | 10.31.22.1 – 10.31.23.254 | 10.31.23.255 |
| 141 | 10.31.24.0/23 | 10.31.24.1 – 10.31.25.254 | 10.31.25.255 |
| 142 | 10.31.26.0/23 | 10.31.26.1 – 10.31.27.254 | 10.31.27.255 |
| 143 | 10.31.28.0/23 | 10.31.28.1 – 10.31.29.254 | 10.31.29.255 |
| 144 | 10.31.30.0/23 | 10.31.30.1 – 10.31.31.254 | 10.31.31.255 |
| 145 | 10.31.32.0/23 | 10.31.32.1 – 10.31.33.254 | 10.31.33.255 |
| 146 | 10.31.34.0/23 | 10.31.34.1 – 10.31.35.254 | 10.31.35.255 |
| 147 | 10.31.36.0/23 | 10.31.36.1 – 10.31.37.254 | 10.31.37.255 |
| 148 | 10.31.38.0/23 | 10.31.38.1 – 10.31.39.254 | 10.31.39.255 |
| 149 | 10.31.40.0/23 | 10.31.40.1 – 10.31.41.254 | 10.31.41.255 |
| 150 | 10.31.42.0/23 | 10.31.42.1 – 10.31.43.254 | 10.31.43.255 |
| 151 | 10.31.44.0/23 | 10.31.44.1 – 10.31.45.254 | 10.31.45.255 |
| 152 | 10.31.46.0/23 | 10.31.46.1 – 10.31.47.254 | 10.31.47.255 |
| 153 | 10.31.48.0/23 | 10.31.48.1 – 10.31.49.254 | 10.31.49.255 |
| 154 | 10.31.50.0/23 | 10.31.50.1 – 10.31.51.254 | 10.31.51.255 |
| 155 | 10.31.52.0/23 | 10.31.52.1 – 10.31.53.254 | 10.31.53.255 |
| 156 | 10.31.54.0/23 | 10.31.54.1 – 10.31.55.254 | 10.31.55.255 |
| 157 | 10.31.56.0/23 | 10.31.56.1 – 10.31.57.254 | 10.31.57.255 |
| 158 | 10.31.58.0/23 | 10.31.58.1 – 10.31.59.254 | 10.31.59.255 |
| 159 | 10.31.60.0/23 | 10.31.60.1 – 10.31.61.254 | 10.31.61.255 |
| 160 | 10.31.62.0/23 | 10.31.62.1 – 10.31.63.254 | 10.31.63.255 |
| 161 | 10.31.64.0/23 | 10.31.64.1 – 10.31.65.254 | 10.31.65.255 |
| 162 | 10.31.66.0/23 | 10.31.66.1 – 10.31.67.254 | 10.31.67.255 |
| 163 | 10.31.68.0/23 | 10.31.68.1 – 10.31.69.254 | 10.31.69.255 |
| 164 | 10.31.70.0/23 | 10.31.70.1 – 10.31.71.254 | 10.31.71.255 |
| 165 | 10.31.72.0/23 | 10.31.72.1 – 10.31.73.254 | 10.31.73.255 |
| 166 | 10.31.74.0/23 | 10.31.74.1 – 10.31.75.254 | 10.31.75.255 |
| 167 | 10.31.76.0/23 | 10.31.76.1 – 10.31.77.254 | 10.31.77.255 |
| 168 | 10.31.78.0/23 | 10.31.78.1 – 10.31.79.254 | 10.31.79.255 |
| 169 | 10.31.80.0/23 | 10.31.80.1 – 10.31.81.254 | 10.31.81.255 |
| 170 | 10.31.82.0/23 | 10.31.82.1 – 10.31.83.254 | 10.31.83.255 |
| 171 | 10.31.84.0/23 | 10.31.84.1 – 10.31.85.254 | 10.31.85.255 |
| 172 | 10.31.86.0/23 | 10.31.86.1 – 10.31.87.254 | 10.31.87.255 |
| 173 | 10.31.88.0/23 | 10.31.88.1 – 10.31.89.254 | 10.31.89.255 |
| 174 | 10.31.90.0/23 | 10.31.90.1 – 10.31.91.254 | 10.31.91.255 |
| 175 | 10.31.92.0/23 | 10.31.92.1 – 10.31.93.254 | 10.31.93.255 |
| 176 | 10.31.94.0/23 | 10.31.94.1 – 10.31.95.254 | 10.31.95.255 |
| 177 | 10.31.96.0/23 | 10.31.96.1 – 10.31.97.254 | 10.31.97.255 |
| 178 | 10.31.98.0/23 | 10.31.98.1 – 10.31.99.254 | 10.31.99.255 |
| 179 | 10.31.100.0/23 | 10.31.100.1 – 10.31.101.254 | 10.31.101.255 |
| 180 | 10.31.102.0/23 | 10.31.102.1 – 10.31.103.254 | 10.31.103.255 |
| 181 | 10.31.104.0/23 | 10.31.104.1 – 10.31.105.254 | 10.31.105.255 |
| 182 | 10.31.106.0/23 | 10.31.106.1 – 10.31.107.254 | 10.31.107.255 |
| 183 | 10.31.108.0/23 | 10.31.108.1 – 10.31.109.254 | 10.31.109.255 |
| 184 | 10.31.110.0/23 | 10.31.110.1 – 10.31.111.254 | 10.31.111.255 |
| 185 | 10.31.112.0/23 | 10.31.112.1 – 10.31.113.254 | 10.31.113.255 |
| 186 | 10.31.114.0/23 | 10.31.114.1 – 10.31.115.254 | 10.31.115.255 |
| 187 | 10.31.116.0/23 | 10.31.116.1 – 10.31.117.254 | 10.31.117.255 |
| 188 | 10.31.118.0/23 | 10.31.118.1 – 10.31.119.254 | 10.31.119.255 |
| 189 | 10.31.120.0/23 | 10.31.120.1 – 10.31.121.254 | 10.31.121.255 |
| 190 | 10.31.122.0/23 | 10.31.122.1 – 10.31.123.254 | 10.31.123.255 |
| 191 | 10.31.124.0/23 | 10.31.124.1 – 10.31.125.254 | 10.31.125.255 |
| 192 | 10.31.126.0/23 | 10.31.126.1 – 10.31.127.254 | 10.31.127.255 |
| 193 | 10.31.128.0/23 | 10.31.128.1 – 10.31.129.254 | 10.31.129.255 |
| 194 | 10.31.130.0/23 | 10.31.130.1 – 10.31.131.254 | 10.31.131.255 |
| 195 | 10.31.132.0/23 | 10.31.132.1 – 10.31.133.254 | 10.31.133.255 |
| 196 | 10.31.134.0/23 | 10.31.134.1 – 10.31.135.254 | 10.31.135.255 |
| 197 | 10.31.136.0/23 | 10.31.136.1 – 10.31.137.254 | 10.31.137.255 |
| 198 | 10.31.138.0/23 | 10.31.138.1 – 10.31.139.254 | 10.31.139.255 |
| 199 | 10.31.140.0/23 | 10.31.140.1 – 10.31.141.254 | 10.31.141.255 |
| 200 | 10.31.142.0/23 | 10.31.142.1 – 10.31.143.254 | 10.31.143.255 |
| 201 | 10.31.144.0/23 | 10.31.144.1 – 10.31.145.254 | 10.31.145.255 |
| 202 | 10.31.146.0/23 | 10.31.146.1 – 10.31.147.254 | 10.31.147.255 |
| 203 | 10.31.148.0/23 | 10.31.148.1 – 10.31.149.254 | 10.31.149.255 |
| 204 | 10.31.150.0/23 | 10.31.150.1 – 10.31.151.254 | 10.31.151.255 |
| 205 | 10.31.152.0/23 | 10.31.152.1 – 10.31.153.254 | 10.31.153.255 |
| 206 | 10.31.154.0/23 | 10.31.154.1 – 10.31.155.254 | 10.31.155.255 |
| 207 | 10.31.156.0/23 | 10.31.156.1 – 10.31.157.254 | 10.31.157.255 |
| 208 | 10.31.158.0/23 | 10.31.158.1 – 10.31.159.254 | 10.31.159.255 |
| 209 | 10.31.160.0/23 | 10.31.160.1 – 10.31.161.254 | 10.31.161.255 |
| 210 | 10.31.162.0/23 | 10.31.162.1 – 10.31.163.254 | 10.31.163.255 |
| 211 | 10.31.164.0/23 | 10.31.164.1 – 10.31.165.254 | 10.31.165.255 |
| 212 | 10.31.166.0/23 | 10.31.166.1 – 10.31.167.254 | 10.31.167.255 |
| 213 | 10.31.168.0/23 | 10.31.168.1 – 10.31.169.254 | 10.31.169.255 |
| 214 | 10.31.170.0/23 | 10.31.170.1 – 10.31.171.254 | 10.31.171.255 |
| 215 | 10.31.172.0/23 | 10.31.172.1 – 10.31.173.254 | 10.31.173.255 |
| 216 | 10.31.174.0/23 | 10.31.174.1 – 10.31.175.254 | 10.31.175.255 |
| 217 | 10.31.176.0/23 | 10.31.176.1 – 10.31.177.254 | 10.31.177.255 |
| 218 | 10.31.178.0/23 | 10.31.178.1 – 10.31.179.254 | 10.31.179.255 |
| 219 | 10.31.180.0/23 | 10.31.180.1 – 10.31.181.254 | 10.31.181.255 |
| 220 | 10.31.182.0/23 | 10.31.182.1 – 10.31.183.254 | 10.31.183.255 |
| 221 | 10.31.184.0/23 | 10.31.184.1 – 10.31.185.254 | 10.31.185.255 |
| 222 | 10.31.186.0/23 | 10.31.186.1 – 10.31.187.254 | 10.31.187.255 |
| 223 | 10.31.188.0/23 | 10.31.188.1 – 10.31.189.254 | 10.31.189.255 |
| 224 | 10.31.190.0/23 | 10.31.190.1 – 10.31.191.254 | 10.31.191.255 |
| 225 | 10.31.192.0/23 | 10.31.192.1 – 10.31.193.254 | 10.31.193.255 |
| 226 | 10.31.194.0/23 | 10.31.194.1 – 10.31.195.254 | 10.31.195.255 |
| 227 | 10.31.196.0/23 | 10.31.196.1 – 10.31.197.254 | 10.31.197.255 |
| 228 | 10.31.198.0/23 | 10.31.198.1 – 10.31.199.254 | 10.31.199.255 |
| 229 | 10.31.200.0/23 | 10.31.200.1 – 10.31.201.254 | 10.31.201.255 |
| 230 | 10.31.202.0/23 | 10.31.202.1 – 10.31.203.254 | 10.31.203.255 |
| 231 | 10.31.204.0/23 | 10.31.204.1 – 10.31.205.254 | 10.31.205.255 |
| 232 | 10.31.206.0/23 | 10.31.206.1 – 10.31.207.254 | 10.31.207.255 |
| 233 | 10.31.208.0/23 | 10.31.208.1 – 10.31.209.254 | 10.31.209.255 |
| 234 | 10.31.210.0/23 | 10.31.210.1 – 10.31.211.254 | 10.31.211.255 |
| 235 | 10.31.212.0/23 | 10.31.212.1 – 10.31.213.254 | 10.31.213.255 |
| 236 | 10.31.214.0/23 | 10.31.214.1 – 10.31.215.254 | 10.31.215.255 |
| 237 | 10.31.216.0/23 | 10.31.216.1 – 10.31.217.254 | 10.31.217.255 |
| 238 | 10.31.218.0/23 | 10.31.218.1 – 10.31.219.254 | 10.31.219.255 |
| 239 | 10.31.220.0/23 | 10.31.220.1 – 10.31.221.254 | 10.31.221.255 |
| 240 | 10.31.222.0/23 | 10.31.222.1 – 10.31.223.254 | 10.31.223.255 |
| 241 | 10.31.224.0/23 | 10.31.224.1 – 10.31.225.254 | 10.31.225.255 |
| 242 | 10.31.226.0/23 | 10.31.226.1 – 10.31.227.254 | 10.31.227.255 |
| 243 | 10.31.228.0/23 | 10.31.228.1 – 10.31.229.254 | 10.31.229.255 |
| 244 | 10.31.230.0/23 | 10.31.230.1 – 10.31.231.254 | 10.31.231.255 |
| 245 | 10.31.232.0/23 | 10.31.232.1 – 10.31.233.254 | 10.31.233.255 |
| 246 | 10.31.234.0/23 | 10.31.234.1 – 10.31.235.254 | 10.31.235.255 |
| 247 | 10.31.236.0/23 | 10.31.236.1 – 10.31.237.254 | 10.31.237.255 |
| 248 | 10.31.238.0/23 | 10.31.238.1 – 10.31.239.254 | 10.31.239.255 |
| 249 | 10.31.240.0/23 | 10.31.240.1 – 10.31.241.254 | 10.31.241.255 |
| 250 | 10.31.242.0/23 | 10.31.242.1 – 10.31.243.254 | 10.31.243.255 |
| 251 | 10.31.244.0/23 | 10.31.244.1 – 10.31.245.254 | 10.31.245.255 |
| 252 | 10.31.246.0/23 | 10.31.246.1 – 10.31.247.254 | 10.31.247.255 |
| 253 | 10.31.248.0/23 | 10.31.248.1 – 10.31.249.254 | 10.31.249.255 |
| 254 | 10.31.250.0/23 | 10.31.250.1 – 10.31.251.254 | 10.31.251.255 |
| 255 | 10.31.252.0/23 | 10.31.252.1 – 10.31.253.254 | 10.31.253.255 |
| 256 | 10.31.254.0/23 | 10.31.254.1 – 10.31.255.254 | 10.31.255.255 |
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.