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)10.4.0.0/15
network10.4.0.0/15
broadcast10.5.255.255
first host10.4.0.1
last host10.5.255.254
subnet mask255.254.0.0
wildcard0.1.255.255
addresses131,072
usable hosts131,070
classA
ipcalc 10.4.0.0/15
address00001010.00000100.00000000.00000000
subnet mask11111111.11111110.00000000.00000000
network00001010.00000100.00000000.00000000
broadcast00001010.00000101.11111111.11111111
green = network part, grey = host part
hex0x0a040000
decimal168034304
reverse dns0.0.4.10.in-addr.arpa
ipv4-mapped::ffff:a04:0
/15 split into /23 · 256 subnets
close ×| # | network | host range | broadcast |
|---|---|---|---|
| 1 | 10.4.0.0/23 | 10.4.0.1 – 10.4.1.254 | 10.4.1.255 |
| 2 | 10.4.2.0/23 | 10.4.2.1 – 10.4.3.254 | 10.4.3.255 |
| 3 | 10.4.4.0/23 | 10.4.4.1 – 10.4.5.254 | 10.4.5.255 |
| 4 | 10.4.6.0/23 | 10.4.6.1 – 10.4.7.254 | 10.4.7.255 |
| 5 | 10.4.8.0/23 | 10.4.8.1 – 10.4.9.254 | 10.4.9.255 |
| 6 | 10.4.10.0/23 | 10.4.10.1 – 10.4.11.254 | 10.4.11.255 |
| 7 | 10.4.12.0/23 | 10.4.12.1 – 10.4.13.254 | 10.4.13.255 |
| 8 | 10.4.14.0/23 | 10.4.14.1 – 10.4.15.254 | 10.4.15.255 |
| 9 | 10.4.16.0/23 | 10.4.16.1 – 10.4.17.254 | 10.4.17.255 |
| 10 | 10.4.18.0/23 | 10.4.18.1 – 10.4.19.254 | 10.4.19.255 |
| 11 | 10.4.20.0/23 | 10.4.20.1 – 10.4.21.254 | 10.4.21.255 |
| 12 | 10.4.22.0/23 | 10.4.22.1 – 10.4.23.254 | 10.4.23.255 |
| 13 | 10.4.24.0/23 | 10.4.24.1 – 10.4.25.254 | 10.4.25.255 |
| 14 | 10.4.26.0/23 | 10.4.26.1 – 10.4.27.254 | 10.4.27.255 |
| 15 | 10.4.28.0/23 | 10.4.28.1 – 10.4.29.254 | 10.4.29.255 |
| 16 | 10.4.30.0/23 | 10.4.30.1 – 10.4.31.254 | 10.4.31.255 |
| 17 | 10.4.32.0/23 | 10.4.32.1 – 10.4.33.254 | 10.4.33.255 |
| 18 | 10.4.34.0/23 | 10.4.34.1 – 10.4.35.254 | 10.4.35.255 |
| 19 | 10.4.36.0/23 | 10.4.36.1 – 10.4.37.254 | 10.4.37.255 |
| 20 | 10.4.38.0/23 | 10.4.38.1 – 10.4.39.254 | 10.4.39.255 |
| 21 | 10.4.40.0/23 | 10.4.40.1 – 10.4.41.254 | 10.4.41.255 |
| 22 | 10.4.42.0/23 | 10.4.42.1 – 10.4.43.254 | 10.4.43.255 |
| 23 | 10.4.44.0/23 | 10.4.44.1 – 10.4.45.254 | 10.4.45.255 |
| 24 | 10.4.46.0/23 | 10.4.46.1 – 10.4.47.254 | 10.4.47.255 |
| 25 | 10.4.48.0/23 | 10.4.48.1 – 10.4.49.254 | 10.4.49.255 |
| 26 | 10.4.50.0/23 | 10.4.50.1 – 10.4.51.254 | 10.4.51.255 |
| 27 | 10.4.52.0/23 | 10.4.52.1 – 10.4.53.254 | 10.4.53.255 |
| 28 | 10.4.54.0/23 | 10.4.54.1 – 10.4.55.254 | 10.4.55.255 |
| 29 | 10.4.56.0/23 | 10.4.56.1 – 10.4.57.254 | 10.4.57.255 |
| 30 | 10.4.58.0/23 | 10.4.58.1 – 10.4.59.254 | 10.4.59.255 |
| 31 | 10.4.60.0/23 | 10.4.60.1 – 10.4.61.254 | 10.4.61.255 |
| 32 | 10.4.62.0/23 | 10.4.62.1 – 10.4.63.254 | 10.4.63.255 |
| 33 | 10.4.64.0/23 | 10.4.64.1 – 10.4.65.254 | 10.4.65.255 |
| 34 | 10.4.66.0/23 | 10.4.66.1 – 10.4.67.254 | 10.4.67.255 |
| 35 | 10.4.68.0/23 | 10.4.68.1 – 10.4.69.254 | 10.4.69.255 |
| 36 | 10.4.70.0/23 | 10.4.70.1 – 10.4.71.254 | 10.4.71.255 |
| 37 | 10.4.72.0/23 | 10.4.72.1 – 10.4.73.254 | 10.4.73.255 |
| 38 | 10.4.74.0/23 | 10.4.74.1 – 10.4.75.254 | 10.4.75.255 |
| 39 | 10.4.76.0/23 | 10.4.76.1 – 10.4.77.254 | 10.4.77.255 |
| 40 | 10.4.78.0/23 | 10.4.78.1 – 10.4.79.254 | 10.4.79.255 |
| 41 | 10.4.80.0/23 | 10.4.80.1 – 10.4.81.254 | 10.4.81.255 |
| 42 | 10.4.82.0/23 | 10.4.82.1 – 10.4.83.254 | 10.4.83.255 |
| 43 | 10.4.84.0/23 | 10.4.84.1 – 10.4.85.254 | 10.4.85.255 |
| 44 | 10.4.86.0/23 | 10.4.86.1 – 10.4.87.254 | 10.4.87.255 |
| 45 | 10.4.88.0/23 | 10.4.88.1 – 10.4.89.254 | 10.4.89.255 |
| 46 | 10.4.90.0/23 | 10.4.90.1 – 10.4.91.254 | 10.4.91.255 |
| 47 | 10.4.92.0/23 | 10.4.92.1 – 10.4.93.254 | 10.4.93.255 |
| 48 | 10.4.94.0/23 | 10.4.94.1 – 10.4.95.254 | 10.4.95.255 |
| 49 | 10.4.96.0/23 | 10.4.96.1 – 10.4.97.254 | 10.4.97.255 |
| 50 | 10.4.98.0/23 | 10.4.98.1 – 10.4.99.254 | 10.4.99.255 |
| 51 | 10.4.100.0/23 | 10.4.100.1 – 10.4.101.254 | 10.4.101.255 |
| 52 | 10.4.102.0/23 | 10.4.102.1 – 10.4.103.254 | 10.4.103.255 |
| 53 | 10.4.104.0/23 | 10.4.104.1 – 10.4.105.254 | 10.4.105.255 |
| 54 | 10.4.106.0/23 | 10.4.106.1 – 10.4.107.254 | 10.4.107.255 |
| 55 | 10.4.108.0/23 | 10.4.108.1 – 10.4.109.254 | 10.4.109.255 |
| 56 | 10.4.110.0/23 | 10.4.110.1 – 10.4.111.254 | 10.4.111.255 |
| 57 | 10.4.112.0/23 | 10.4.112.1 – 10.4.113.254 | 10.4.113.255 |
| 58 | 10.4.114.0/23 | 10.4.114.1 – 10.4.115.254 | 10.4.115.255 |
| 59 | 10.4.116.0/23 | 10.4.116.1 – 10.4.117.254 | 10.4.117.255 |
| 60 | 10.4.118.0/23 | 10.4.118.1 – 10.4.119.254 | 10.4.119.255 |
| 61 | 10.4.120.0/23 | 10.4.120.1 – 10.4.121.254 | 10.4.121.255 |
| 62 | 10.4.122.0/23 | 10.4.122.1 – 10.4.123.254 | 10.4.123.255 |
| 63 | 10.4.124.0/23 | 10.4.124.1 – 10.4.125.254 | 10.4.125.255 |
| 64 | 10.4.126.0/23 | 10.4.126.1 – 10.4.127.254 | 10.4.127.255 |
| 65 | 10.4.128.0/23 | 10.4.128.1 – 10.4.129.254 | 10.4.129.255 |
| 66 | 10.4.130.0/23 | 10.4.130.1 – 10.4.131.254 | 10.4.131.255 |
| 67 | 10.4.132.0/23 | 10.4.132.1 – 10.4.133.254 | 10.4.133.255 |
| 68 | 10.4.134.0/23 | 10.4.134.1 – 10.4.135.254 | 10.4.135.255 |
| 69 | 10.4.136.0/23 | 10.4.136.1 – 10.4.137.254 | 10.4.137.255 |
| 70 | 10.4.138.0/23 | 10.4.138.1 – 10.4.139.254 | 10.4.139.255 |
| 71 | 10.4.140.0/23 | 10.4.140.1 – 10.4.141.254 | 10.4.141.255 |
| 72 | 10.4.142.0/23 | 10.4.142.1 – 10.4.143.254 | 10.4.143.255 |
| 73 | 10.4.144.0/23 | 10.4.144.1 – 10.4.145.254 | 10.4.145.255 |
| 74 | 10.4.146.0/23 | 10.4.146.1 – 10.4.147.254 | 10.4.147.255 |
| 75 | 10.4.148.0/23 | 10.4.148.1 – 10.4.149.254 | 10.4.149.255 |
| 76 | 10.4.150.0/23 | 10.4.150.1 – 10.4.151.254 | 10.4.151.255 |
| 77 | 10.4.152.0/23 | 10.4.152.1 – 10.4.153.254 | 10.4.153.255 |
| 78 | 10.4.154.0/23 | 10.4.154.1 – 10.4.155.254 | 10.4.155.255 |
| 79 | 10.4.156.0/23 | 10.4.156.1 – 10.4.157.254 | 10.4.157.255 |
| 80 | 10.4.158.0/23 | 10.4.158.1 – 10.4.159.254 | 10.4.159.255 |
| 81 | 10.4.160.0/23 | 10.4.160.1 – 10.4.161.254 | 10.4.161.255 |
| 82 | 10.4.162.0/23 | 10.4.162.1 – 10.4.163.254 | 10.4.163.255 |
| 83 | 10.4.164.0/23 | 10.4.164.1 – 10.4.165.254 | 10.4.165.255 |
| 84 | 10.4.166.0/23 | 10.4.166.1 – 10.4.167.254 | 10.4.167.255 |
| 85 | 10.4.168.0/23 | 10.4.168.1 – 10.4.169.254 | 10.4.169.255 |
| 86 | 10.4.170.0/23 | 10.4.170.1 – 10.4.171.254 | 10.4.171.255 |
| 87 | 10.4.172.0/23 | 10.4.172.1 – 10.4.173.254 | 10.4.173.255 |
| 88 | 10.4.174.0/23 | 10.4.174.1 – 10.4.175.254 | 10.4.175.255 |
| 89 | 10.4.176.0/23 | 10.4.176.1 – 10.4.177.254 | 10.4.177.255 |
| 90 | 10.4.178.0/23 | 10.4.178.1 – 10.4.179.254 | 10.4.179.255 |
| 91 | 10.4.180.0/23 | 10.4.180.1 – 10.4.181.254 | 10.4.181.255 |
| 92 | 10.4.182.0/23 | 10.4.182.1 – 10.4.183.254 | 10.4.183.255 |
| 93 | 10.4.184.0/23 | 10.4.184.1 – 10.4.185.254 | 10.4.185.255 |
| 94 | 10.4.186.0/23 | 10.4.186.1 – 10.4.187.254 | 10.4.187.255 |
| 95 | 10.4.188.0/23 | 10.4.188.1 – 10.4.189.254 | 10.4.189.255 |
| 96 | 10.4.190.0/23 | 10.4.190.1 – 10.4.191.254 | 10.4.191.255 |
| 97 | 10.4.192.0/23 | 10.4.192.1 – 10.4.193.254 | 10.4.193.255 |
| 98 | 10.4.194.0/23 | 10.4.194.1 – 10.4.195.254 | 10.4.195.255 |
| 99 | 10.4.196.0/23 | 10.4.196.1 – 10.4.197.254 | 10.4.197.255 |
| 100 | 10.4.198.0/23 | 10.4.198.1 – 10.4.199.254 | 10.4.199.255 |
| 101 | 10.4.200.0/23 | 10.4.200.1 – 10.4.201.254 | 10.4.201.255 |
| 102 | 10.4.202.0/23 | 10.4.202.1 – 10.4.203.254 | 10.4.203.255 |
| 103 | 10.4.204.0/23 | 10.4.204.1 – 10.4.205.254 | 10.4.205.255 |
| 104 | 10.4.206.0/23 | 10.4.206.1 – 10.4.207.254 | 10.4.207.255 |
| 105 | 10.4.208.0/23 | 10.4.208.1 – 10.4.209.254 | 10.4.209.255 |
| 106 | 10.4.210.0/23 | 10.4.210.1 – 10.4.211.254 | 10.4.211.255 |
| 107 | 10.4.212.0/23 | 10.4.212.1 – 10.4.213.254 | 10.4.213.255 |
| 108 | 10.4.214.0/23 | 10.4.214.1 – 10.4.215.254 | 10.4.215.255 |
| 109 | 10.4.216.0/23 | 10.4.216.1 – 10.4.217.254 | 10.4.217.255 |
| 110 | 10.4.218.0/23 | 10.4.218.1 – 10.4.219.254 | 10.4.219.255 |
| 111 | 10.4.220.0/23 | 10.4.220.1 – 10.4.221.254 | 10.4.221.255 |
| 112 | 10.4.222.0/23 | 10.4.222.1 – 10.4.223.254 | 10.4.223.255 |
| 113 | 10.4.224.0/23 | 10.4.224.1 – 10.4.225.254 | 10.4.225.255 |
| 114 | 10.4.226.0/23 | 10.4.226.1 – 10.4.227.254 | 10.4.227.255 |
| 115 | 10.4.228.0/23 | 10.4.228.1 – 10.4.229.254 | 10.4.229.255 |
| 116 | 10.4.230.0/23 | 10.4.230.1 – 10.4.231.254 | 10.4.231.255 |
| 117 | 10.4.232.0/23 | 10.4.232.1 – 10.4.233.254 | 10.4.233.255 |
| 118 | 10.4.234.0/23 | 10.4.234.1 – 10.4.235.254 | 10.4.235.255 |
| 119 | 10.4.236.0/23 | 10.4.236.1 – 10.4.237.254 | 10.4.237.255 |
| 120 | 10.4.238.0/23 | 10.4.238.1 – 10.4.239.254 | 10.4.239.255 |
| 121 | 10.4.240.0/23 | 10.4.240.1 – 10.4.241.254 | 10.4.241.255 |
| 122 | 10.4.242.0/23 | 10.4.242.1 – 10.4.243.254 | 10.4.243.255 |
| 123 | 10.4.244.0/23 | 10.4.244.1 – 10.4.245.254 | 10.4.245.255 |
| 124 | 10.4.246.0/23 | 10.4.246.1 – 10.4.247.254 | 10.4.247.255 |
| 125 | 10.4.248.0/23 | 10.4.248.1 – 10.4.249.254 | 10.4.249.255 |
| 126 | 10.4.250.0/23 | 10.4.250.1 – 10.4.251.254 | 10.4.251.255 |
| 127 | 10.4.252.0/23 | 10.4.252.1 – 10.4.253.254 | 10.4.253.255 |
| 128 | 10.4.254.0/23 | 10.4.254.1 – 10.4.255.254 | 10.4.255.255 |
| 129 | 10.5.0.0/23 | 10.5.0.1 – 10.5.1.254 | 10.5.1.255 |
| 130 | 10.5.2.0/23 | 10.5.2.1 – 10.5.3.254 | 10.5.3.255 |
| 131 | 10.5.4.0/23 | 10.5.4.1 – 10.5.5.254 | 10.5.5.255 |
| 132 | 10.5.6.0/23 | 10.5.6.1 – 10.5.7.254 | 10.5.7.255 |
| 133 | 10.5.8.0/23 | 10.5.8.1 – 10.5.9.254 | 10.5.9.255 |
| 134 | 10.5.10.0/23 | 10.5.10.1 – 10.5.11.254 | 10.5.11.255 |
| 135 | 10.5.12.0/23 | 10.5.12.1 – 10.5.13.254 | 10.5.13.255 |
| 136 | 10.5.14.0/23 | 10.5.14.1 – 10.5.15.254 | 10.5.15.255 |
| 137 | 10.5.16.0/23 | 10.5.16.1 – 10.5.17.254 | 10.5.17.255 |
| 138 | 10.5.18.0/23 | 10.5.18.1 – 10.5.19.254 | 10.5.19.255 |
| 139 | 10.5.20.0/23 | 10.5.20.1 – 10.5.21.254 | 10.5.21.255 |
| 140 | 10.5.22.0/23 | 10.5.22.1 – 10.5.23.254 | 10.5.23.255 |
| 141 | 10.5.24.0/23 | 10.5.24.1 – 10.5.25.254 | 10.5.25.255 |
| 142 | 10.5.26.0/23 | 10.5.26.1 – 10.5.27.254 | 10.5.27.255 |
| 143 | 10.5.28.0/23 | 10.5.28.1 – 10.5.29.254 | 10.5.29.255 |
| 144 | 10.5.30.0/23 | 10.5.30.1 – 10.5.31.254 | 10.5.31.255 |
| 145 | 10.5.32.0/23 | 10.5.32.1 – 10.5.33.254 | 10.5.33.255 |
| 146 | 10.5.34.0/23 | 10.5.34.1 – 10.5.35.254 | 10.5.35.255 |
| 147 | 10.5.36.0/23 | 10.5.36.1 – 10.5.37.254 | 10.5.37.255 |
| 148 | 10.5.38.0/23 | 10.5.38.1 – 10.5.39.254 | 10.5.39.255 |
| 149 | 10.5.40.0/23 | 10.5.40.1 – 10.5.41.254 | 10.5.41.255 |
| 150 | 10.5.42.0/23 | 10.5.42.1 – 10.5.43.254 | 10.5.43.255 |
| 151 | 10.5.44.0/23 | 10.5.44.1 – 10.5.45.254 | 10.5.45.255 |
| 152 | 10.5.46.0/23 | 10.5.46.1 – 10.5.47.254 | 10.5.47.255 |
| 153 | 10.5.48.0/23 | 10.5.48.1 – 10.5.49.254 | 10.5.49.255 |
| 154 | 10.5.50.0/23 | 10.5.50.1 – 10.5.51.254 | 10.5.51.255 |
| 155 | 10.5.52.0/23 | 10.5.52.1 – 10.5.53.254 | 10.5.53.255 |
| 156 | 10.5.54.0/23 | 10.5.54.1 – 10.5.55.254 | 10.5.55.255 |
| 157 | 10.5.56.0/23 | 10.5.56.1 – 10.5.57.254 | 10.5.57.255 |
| 158 | 10.5.58.0/23 | 10.5.58.1 – 10.5.59.254 | 10.5.59.255 |
| 159 | 10.5.60.0/23 | 10.5.60.1 – 10.5.61.254 | 10.5.61.255 |
| 160 | 10.5.62.0/23 | 10.5.62.1 – 10.5.63.254 | 10.5.63.255 |
| 161 | 10.5.64.0/23 | 10.5.64.1 – 10.5.65.254 | 10.5.65.255 |
| 162 | 10.5.66.0/23 | 10.5.66.1 – 10.5.67.254 | 10.5.67.255 |
| 163 | 10.5.68.0/23 | 10.5.68.1 – 10.5.69.254 | 10.5.69.255 |
| 164 | 10.5.70.0/23 | 10.5.70.1 – 10.5.71.254 | 10.5.71.255 |
| 165 | 10.5.72.0/23 | 10.5.72.1 – 10.5.73.254 | 10.5.73.255 |
| 166 | 10.5.74.0/23 | 10.5.74.1 – 10.5.75.254 | 10.5.75.255 |
| 167 | 10.5.76.0/23 | 10.5.76.1 – 10.5.77.254 | 10.5.77.255 |
| 168 | 10.5.78.0/23 | 10.5.78.1 – 10.5.79.254 | 10.5.79.255 |
| 169 | 10.5.80.0/23 | 10.5.80.1 – 10.5.81.254 | 10.5.81.255 |
| 170 | 10.5.82.0/23 | 10.5.82.1 – 10.5.83.254 | 10.5.83.255 |
| 171 | 10.5.84.0/23 | 10.5.84.1 – 10.5.85.254 | 10.5.85.255 |
| 172 | 10.5.86.0/23 | 10.5.86.1 – 10.5.87.254 | 10.5.87.255 |
| 173 | 10.5.88.0/23 | 10.5.88.1 – 10.5.89.254 | 10.5.89.255 |
| 174 | 10.5.90.0/23 | 10.5.90.1 – 10.5.91.254 | 10.5.91.255 |
| 175 | 10.5.92.0/23 | 10.5.92.1 – 10.5.93.254 | 10.5.93.255 |
| 176 | 10.5.94.0/23 | 10.5.94.1 – 10.5.95.254 | 10.5.95.255 |
| 177 | 10.5.96.0/23 | 10.5.96.1 – 10.5.97.254 | 10.5.97.255 |
| 178 | 10.5.98.0/23 | 10.5.98.1 – 10.5.99.254 | 10.5.99.255 |
| 179 | 10.5.100.0/23 | 10.5.100.1 – 10.5.101.254 | 10.5.101.255 |
| 180 | 10.5.102.0/23 | 10.5.102.1 – 10.5.103.254 | 10.5.103.255 |
| 181 | 10.5.104.0/23 | 10.5.104.1 – 10.5.105.254 | 10.5.105.255 |
| 182 | 10.5.106.0/23 | 10.5.106.1 – 10.5.107.254 | 10.5.107.255 |
| 183 | 10.5.108.0/23 | 10.5.108.1 – 10.5.109.254 | 10.5.109.255 |
| 184 | 10.5.110.0/23 | 10.5.110.1 – 10.5.111.254 | 10.5.111.255 |
| 185 | 10.5.112.0/23 | 10.5.112.1 – 10.5.113.254 | 10.5.113.255 |
| 186 | 10.5.114.0/23 | 10.5.114.1 – 10.5.115.254 | 10.5.115.255 |
| 187 | 10.5.116.0/23 | 10.5.116.1 – 10.5.117.254 | 10.5.117.255 |
| 188 | 10.5.118.0/23 | 10.5.118.1 – 10.5.119.254 | 10.5.119.255 |
| 189 | 10.5.120.0/23 | 10.5.120.1 – 10.5.121.254 | 10.5.121.255 |
| 190 | 10.5.122.0/23 | 10.5.122.1 – 10.5.123.254 | 10.5.123.255 |
| 191 | 10.5.124.0/23 | 10.5.124.1 – 10.5.125.254 | 10.5.125.255 |
| 192 | 10.5.126.0/23 | 10.5.126.1 – 10.5.127.254 | 10.5.127.255 |
| 193 | 10.5.128.0/23 | 10.5.128.1 – 10.5.129.254 | 10.5.129.255 |
| 194 | 10.5.130.0/23 | 10.5.130.1 – 10.5.131.254 | 10.5.131.255 |
| 195 | 10.5.132.0/23 | 10.5.132.1 – 10.5.133.254 | 10.5.133.255 |
| 196 | 10.5.134.0/23 | 10.5.134.1 – 10.5.135.254 | 10.5.135.255 |
| 197 | 10.5.136.0/23 | 10.5.136.1 – 10.5.137.254 | 10.5.137.255 |
| 198 | 10.5.138.0/23 | 10.5.138.1 – 10.5.139.254 | 10.5.139.255 |
| 199 | 10.5.140.0/23 | 10.5.140.1 – 10.5.141.254 | 10.5.141.255 |
| 200 | 10.5.142.0/23 | 10.5.142.1 – 10.5.143.254 | 10.5.143.255 |
| 201 | 10.5.144.0/23 | 10.5.144.1 – 10.5.145.254 | 10.5.145.255 |
| 202 | 10.5.146.0/23 | 10.5.146.1 – 10.5.147.254 | 10.5.147.255 |
| 203 | 10.5.148.0/23 | 10.5.148.1 – 10.5.149.254 | 10.5.149.255 |
| 204 | 10.5.150.0/23 | 10.5.150.1 – 10.5.151.254 | 10.5.151.255 |
| 205 | 10.5.152.0/23 | 10.5.152.1 – 10.5.153.254 | 10.5.153.255 |
| 206 | 10.5.154.0/23 | 10.5.154.1 – 10.5.155.254 | 10.5.155.255 |
| 207 | 10.5.156.0/23 | 10.5.156.1 – 10.5.157.254 | 10.5.157.255 |
| 208 | 10.5.158.0/23 | 10.5.158.1 – 10.5.159.254 | 10.5.159.255 |
| 209 | 10.5.160.0/23 | 10.5.160.1 – 10.5.161.254 | 10.5.161.255 |
| 210 | 10.5.162.0/23 | 10.5.162.1 – 10.5.163.254 | 10.5.163.255 |
| 211 | 10.5.164.0/23 | 10.5.164.1 – 10.5.165.254 | 10.5.165.255 |
| 212 | 10.5.166.0/23 | 10.5.166.1 – 10.5.167.254 | 10.5.167.255 |
| 213 | 10.5.168.0/23 | 10.5.168.1 – 10.5.169.254 | 10.5.169.255 |
| 214 | 10.5.170.0/23 | 10.5.170.1 – 10.5.171.254 | 10.5.171.255 |
| 215 | 10.5.172.0/23 | 10.5.172.1 – 10.5.173.254 | 10.5.173.255 |
| 216 | 10.5.174.0/23 | 10.5.174.1 – 10.5.175.254 | 10.5.175.255 |
| 217 | 10.5.176.0/23 | 10.5.176.1 – 10.5.177.254 | 10.5.177.255 |
| 218 | 10.5.178.0/23 | 10.5.178.1 – 10.5.179.254 | 10.5.179.255 |
| 219 | 10.5.180.0/23 | 10.5.180.1 – 10.5.181.254 | 10.5.181.255 |
| 220 | 10.5.182.0/23 | 10.5.182.1 – 10.5.183.254 | 10.5.183.255 |
| 221 | 10.5.184.0/23 | 10.5.184.1 – 10.5.185.254 | 10.5.185.255 |
| 222 | 10.5.186.0/23 | 10.5.186.1 – 10.5.187.254 | 10.5.187.255 |
| 223 | 10.5.188.0/23 | 10.5.188.1 – 10.5.189.254 | 10.5.189.255 |
| 224 | 10.5.190.0/23 | 10.5.190.1 – 10.5.191.254 | 10.5.191.255 |
| 225 | 10.5.192.0/23 | 10.5.192.1 – 10.5.193.254 | 10.5.193.255 |
| 226 | 10.5.194.0/23 | 10.5.194.1 – 10.5.195.254 | 10.5.195.255 |
| 227 | 10.5.196.0/23 | 10.5.196.1 – 10.5.197.254 | 10.5.197.255 |
| 228 | 10.5.198.0/23 | 10.5.198.1 – 10.5.199.254 | 10.5.199.255 |
| 229 | 10.5.200.0/23 | 10.5.200.1 – 10.5.201.254 | 10.5.201.255 |
| 230 | 10.5.202.0/23 | 10.5.202.1 – 10.5.203.254 | 10.5.203.255 |
| 231 | 10.5.204.0/23 | 10.5.204.1 – 10.5.205.254 | 10.5.205.255 |
| 232 | 10.5.206.0/23 | 10.5.206.1 – 10.5.207.254 | 10.5.207.255 |
| 233 | 10.5.208.0/23 | 10.5.208.1 – 10.5.209.254 | 10.5.209.255 |
| 234 | 10.5.210.0/23 | 10.5.210.1 – 10.5.211.254 | 10.5.211.255 |
| 235 | 10.5.212.0/23 | 10.5.212.1 – 10.5.213.254 | 10.5.213.255 |
| 236 | 10.5.214.0/23 | 10.5.214.1 – 10.5.215.254 | 10.5.215.255 |
| 237 | 10.5.216.0/23 | 10.5.216.1 – 10.5.217.254 | 10.5.217.255 |
| 238 | 10.5.218.0/23 | 10.5.218.1 – 10.5.219.254 | 10.5.219.255 |
| 239 | 10.5.220.0/23 | 10.5.220.1 – 10.5.221.254 | 10.5.221.255 |
| 240 | 10.5.222.0/23 | 10.5.222.1 – 10.5.223.254 | 10.5.223.255 |
| 241 | 10.5.224.0/23 | 10.5.224.1 – 10.5.225.254 | 10.5.225.255 |
| 242 | 10.5.226.0/23 | 10.5.226.1 – 10.5.227.254 | 10.5.227.255 |
| 243 | 10.5.228.0/23 | 10.5.228.1 – 10.5.229.254 | 10.5.229.255 |
| 244 | 10.5.230.0/23 | 10.5.230.1 – 10.5.231.254 | 10.5.231.255 |
| 245 | 10.5.232.0/23 | 10.5.232.1 – 10.5.233.254 | 10.5.233.255 |
| 246 | 10.5.234.0/23 | 10.5.234.1 – 10.5.235.254 | 10.5.235.255 |
| 247 | 10.5.236.0/23 | 10.5.236.1 – 10.5.237.254 | 10.5.237.255 |
| 248 | 10.5.238.0/23 | 10.5.238.1 – 10.5.239.254 | 10.5.239.255 |
| 249 | 10.5.240.0/23 | 10.5.240.1 – 10.5.241.254 | 10.5.241.255 |
| 250 | 10.5.242.0/23 | 10.5.242.1 – 10.5.243.254 | 10.5.243.255 |
| 251 | 10.5.244.0/23 | 10.5.244.1 – 10.5.245.254 | 10.5.245.255 |
| 252 | 10.5.246.0/23 | 10.5.246.1 – 10.5.247.254 | 10.5.247.255 |
| 253 | 10.5.248.0/23 | 10.5.248.1 – 10.5.249.254 | 10.5.249.255 |
| 254 | 10.5.250.0/23 | 10.5.250.1 – 10.5.251.254 | 10.5.251.255 |
| 255 | 10.5.252.0/23 | 10.5.252.1 – 10.5.253.254 | 10.5.253.255 |
| 256 | 10.5.254.0/23 | 10.5.254.1 – 10.5.255.254 | 10.5.255.255 |
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.