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)10.172.0.0/15
network10.172.0.0/15
broadcast10.173.255.255
first host10.172.0.1
last host10.173.255.254
subnet mask255.254.0.0
wildcard0.1.255.255
addresses131,072
usable hosts131,070
classA
ipcalc 10.172.0.0/15
address00001010.10101100.00000000.00000000
subnet mask11111111.11111110.00000000.00000000
network00001010.10101100.00000000.00000000
broadcast00001010.10101101.11111111.11111111
green = network part, grey = host part
hex0x0aac0000
decimal179044352
reverse dns0.0.172.10.in-addr.arpa
ipv4-mapped::ffff:aac:0
/15 split into /23 · 256 subnets
close ×| # | network | host range | broadcast |
|---|---|---|---|
| 1 | 10.172.0.0/23 | 10.172.0.1 – 10.172.1.254 | 10.172.1.255 |
| 2 | 10.172.2.0/23 | 10.172.2.1 – 10.172.3.254 | 10.172.3.255 |
| 3 | 10.172.4.0/23 | 10.172.4.1 – 10.172.5.254 | 10.172.5.255 |
| 4 | 10.172.6.0/23 | 10.172.6.1 – 10.172.7.254 | 10.172.7.255 |
| 5 | 10.172.8.0/23 | 10.172.8.1 – 10.172.9.254 | 10.172.9.255 |
| 6 | 10.172.10.0/23 | 10.172.10.1 – 10.172.11.254 | 10.172.11.255 |
| 7 | 10.172.12.0/23 | 10.172.12.1 – 10.172.13.254 | 10.172.13.255 |
| 8 | 10.172.14.0/23 | 10.172.14.1 – 10.172.15.254 | 10.172.15.255 |
| 9 | 10.172.16.0/23 | 10.172.16.1 – 10.172.17.254 | 10.172.17.255 |
| 10 | 10.172.18.0/23 | 10.172.18.1 – 10.172.19.254 | 10.172.19.255 |
| 11 | 10.172.20.0/23 | 10.172.20.1 – 10.172.21.254 | 10.172.21.255 |
| 12 | 10.172.22.0/23 | 10.172.22.1 – 10.172.23.254 | 10.172.23.255 |
| 13 | 10.172.24.0/23 | 10.172.24.1 – 10.172.25.254 | 10.172.25.255 |
| 14 | 10.172.26.0/23 | 10.172.26.1 – 10.172.27.254 | 10.172.27.255 |
| 15 | 10.172.28.0/23 | 10.172.28.1 – 10.172.29.254 | 10.172.29.255 |
| 16 | 10.172.30.0/23 | 10.172.30.1 – 10.172.31.254 | 10.172.31.255 |
| 17 | 10.172.32.0/23 | 10.172.32.1 – 10.172.33.254 | 10.172.33.255 |
| 18 | 10.172.34.0/23 | 10.172.34.1 – 10.172.35.254 | 10.172.35.255 |
| 19 | 10.172.36.0/23 | 10.172.36.1 – 10.172.37.254 | 10.172.37.255 |
| 20 | 10.172.38.0/23 | 10.172.38.1 – 10.172.39.254 | 10.172.39.255 |
| 21 | 10.172.40.0/23 | 10.172.40.1 – 10.172.41.254 | 10.172.41.255 |
| 22 | 10.172.42.0/23 | 10.172.42.1 – 10.172.43.254 | 10.172.43.255 |
| 23 | 10.172.44.0/23 | 10.172.44.1 – 10.172.45.254 | 10.172.45.255 |
| 24 | 10.172.46.0/23 | 10.172.46.1 – 10.172.47.254 | 10.172.47.255 |
| 25 | 10.172.48.0/23 | 10.172.48.1 – 10.172.49.254 | 10.172.49.255 |
| 26 | 10.172.50.0/23 | 10.172.50.1 – 10.172.51.254 | 10.172.51.255 |
| 27 | 10.172.52.0/23 | 10.172.52.1 – 10.172.53.254 | 10.172.53.255 |
| 28 | 10.172.54.0/23 | 10.172.54.1 – 10.172.55.254 | 10.172.55.255 |
| 29 | 10.172.56.0/23 | 10.172.56.1 – 10.172.57.254 | 10.172.57.255 |
| 30 | 10.172.58.0/23 | 10.172.58.1 – 10.172.59.254 | 10.172.59.255 |
| 31 | 10.172.60.0/23 | 10.172.60.1 – 10.172.61.254 | 10.172.61.255 |
| 32 | 10.172.62.0/23 | 10.172.62.1 – 10.172.63.254 | 10.172.63.255 |
| 33 | 10.172.64.0/23 | 10.172.64.1 – 10.172.65.254 | 10.172.65.255 |
| 34 | 10.172.66.0/23 | 10.172.66.1 – 10.172.67.254 | 10.172.67.255 |
| 35 | 10.172.68.0/23 | 10.172.68.1 – 10.172.69.254 | 10.172.69.255 |
| 36 | 10.172.70.0/23 | 10.172.70.1 – 10.172.71.254 | 10.172.71.255 |
| 37 | 10.172.72.0/23 | 10.172.72.1 – 10.172.73.254 | 10.172.73.255 |
| 38 | 10.172.74.0/23 | 10.172.74.1 – 10.172.75.254 | 10.172.75.255 |
| 39 | 10.172.76.0/23 | 10.172.76.1 – 10.172.77.254 | 10.172.77.255 |
| 40 | 10.172.78.0/23 | 10.172.78.1 – 10.172.79.254 | 10.172.79.255 |
| 41 | 10.172.80.0/23 | 10.172.80.1 – 10.172.81.254 | 10.172.81.255 |
| 42 | 10.172.82.0/23 | 10.172.82.1 – 10.172.83.254 | 10.172.83.255 |
| 43 | 10.172.84.0/23 | 10.172.84.1 – 10.172.85.254 | 10.172.85.255 |
| 44 | 10.172.86.0/23 | 10.172.86.1 – 10.172.87.254 | 10.172.87.255 |
| 45 | 10.172.88.0/23 | 10.172.88.1 – 10.172.89.254 | 10.172.89.255 |
| 46 | 10.172.90.0/23 | 10.172.90.1 – 10.172.91.254 | 10.172.91.255 |
| 47 | 10.172.92.0/23 | 10.172.92.1 – 10.172.93.254 | 10.172.93.255 |
| 48 | 10.172.94.0/23 | 10.172.94.1 – 10.172.95.254 | 10.172.95.255 |
| 49 | 10.172.96.0/23 | 10.172.96.1 – 10.172.97.254 | 10.172.97.255 |
| 50 | 10.172.98.0/23 | 10.172.98.1 – 10.172.99.254 | 10.172.99.255 |
| 51 | 10.172.100.0/23 | 10.172.100.1 – 10.172.101.254 | 10.172.101.255 |
| 52 | 10.172.102.0/23 | 10.172.102.1 – 10.172.103.254 | 10.172.103.255 |
| 53 | 10.172.104.0/23 | 10.172.104.1 – 10.172.105.254 | 10.172.105.255 |
| 54 | 10.172.106.0/23 | 10.172.106.1 – 10.172.107.254 | 10.172.107.255 |
| 55 | 10.172.108.0/23 | 10.172.108.1 – 10.172.109.254 | 10.172.109.255 |
| 56 | 10.172.110.0/23 | 10.172.110.1 – 10.172.111.254 | 10.172.111.255 |
| 57 | 10.172.112.0/23 | 10.172.112.1 – 10.172.113.254 | 10.172.113.255 |
| 58 | 10.172.114.0/23 | 10.172.114.1 – 10.172.115.254 | 10.172.115.255 |
| 59 | 10.172.116.0/23 | 10.172.116.1 – 10.172.117.254 | 10.172.117.255 |
| 60 | 10.172.118.0/23 | 10.172.118.1 – 10.172.119.254 | 10.172.119.255 |
| 61 | 10.172.120.0/23 | 10.172.120.1 – 10.172.121.254 | 10.172.121.255 |
| 62 | 10.172.122.0/23 | 10.172.122.1 – 10.172.123.254 | 10.172.123.255 |
| 63 | 10.172.124.0/23 | 10.172.124.1 – 10.172.125.254 | 10.172.125.255 |
| 64 | 10.172.126.0/23 | 10.172.126.1 – 10.172.127.254 | 10.172.127.255 |
| 65 | 10.172.128.0/23 | 10.172.128.1 – 10.172.129.254 | 10.172.129.255 |
| 66 | 10.172.130.0/23 | 10.172.130.1 – 10.172.131.254 | 10.172.131.255 |
| 67 | 10.172.132.0/23 | 10.172.132.1 – 10.172.133.254 | 10.172.133.255 |
| 68 | 10.172.134.0/23 | 10.172.134.1 – 10.172.135.254 | 10.172.135.255 |
| 69 | 10.172.136.0/23 | 10.172.136.1 – 10.172.137.254 | 10.172.137.255 |
| 70 | 10.172.138.0/23 | 10.172.138.1 – 10.172.139.254 | 10.172.139.255 |
| 71 | 10.172.140.0/23 | 10.172.140.1 – 10.172.141.254 | 10.172.141.255 |
| 72 | 10.172.142.0/23 | 10.172.142.1 – 10.172.143.254 | 10.172.143.255 |
| 73 | 10.172.144.0/23 | 10.172.144.1 – 10.172.145.254 | 10.172.145.255 |
| 74 | 10.172.146.0/23 | 10.172.146.1 – 10.172.147.254 | 10.172.147.255 |
| 75 | 10.172.148.0/23 | 10.172.148.1 – 10.172.149.254 | 10.172.149.255 |
| 76 | 10.172.150.0/23 | 10.172.150.1 – 10.172.151.254 | 10.172.151.255 |
| 77 | 10.172.152.0/23 | 10.172.152.1 – 10.172.153.254 | 10.172.153.255 |
| 78 | 10.172.154.0/23 | 10.172.154.1 – 10.172.155.254 | 10.172.155.255 |
| 79 | 10.172.156.0/23 | 10.172.156.1 – 10.172.157.254 | 10.172.157.255 |
| 80 | 10.172.158.0/23 | 10.172.158.1 – 10.172.159.254 | 10.172.159.255 |
| 81 | 10.172.160.0/23 | 10.172.160.1 – 10.172.161.254 | 10.172.161.255 |
| 82 | 10.172.162.0/23 | 10.172.162.1 – 10.172.163.254 | 10.172.163.255 |
| 83 | 10.172.164.0/23 | 10.172.164.1 – 10.172.165.254 | 10.172.165.255 |
| 84 | 10.172.166.0/23 | 10.172.166.1 – 10.172.167.254 | 10.172.167.255 |
| 85 | 10.172.168.0/23 | 10.172.168.1 – 10.172.169.254 | 10.172.169.255 |
| 86 | 10.172.170.0/23 | 10.172.170.1 – 10.172.171.254 | 10.172.171.255 |
| 87 | 10.172.172.0/23 | 10.172.172.1 – 10.172.173.254 | 10.172.173.255 |
| 88 | 10.172.174.0/23 | 10.172.174.1 – 10.172.175.254 | 10.172.175.255 |
| 89 | 10.172.176.0/23 | 10.172.176.1 – 10.172.177.254 | 10.172.177.255 |
| 90 | 10.172.178.0/23 | 10.172.178.1 – 10.172.179.254 | 10.172.179.255 |
| 91 | 10.172.180.0/23 | 10.172.180.1 – 10.172.181.254 | 10.172.181.255 |
| 92 | 10.172.182.0/23 | 10.172.182.1 – 10.172.183.254 | 10.172.183.255 |
| 93 | 10.172.184.0/23 | 10.172.184.1 – 10.172.185.254 | 10.172.185.255 |
| 94 | 10.172.186.0/23 | 10.172.186.1 – 10.172.187.254 | 10.172.187.255 |
| 95 | 10.172.188.0/23 | 10.172.188.1 – 10.172.189.254 | 10.172.189.255 |
| 96 | 10.172.190.0/23 | 10.172.190.1 – 10.172.191.254 | 10.172.191.255 |
| 97 | 10.172.192.0/23 | 10.172.192.1 – 10.172.193.254 | 10.172.193.255 |
| 98 | 10.172.194.0/23 | 10.172.194.1 – 10.172.195.254 | 10.172.195.255 |
| 99 | 10.172.196.0/23 | 10.172.196.1 – 10.172.197.254 | 10.172.197.255 |
| 100 | 10.172.198.0/23 | 10.172.198.1 – 10.172.199.254 | 10.172.199.255 |
| 101 | 10.172.200.0/23 | 10.172.200.1 – 10.172.201.254 | 10.172.201.255 |
| 102 | 10.172.202.0/23 | 10.172.202.1 – 10.172.203.254 | 10.172.203.255 |
| 103 | 10.172.204.0/23 | 10.172.204.1 – 10.172.205.254 | 10.172.205.255 |
| 104 | 10.172.206.0/23 | 10.172.206.1 – 10.172.207.254 | 10.172.207.255 |
| 105 | 10.172.208.0/23 | 10.172.208.1 – 10.172.209.254 | 10.172.209.255 |
| 106 | 10.172.210.0/23 | 10.172.210.1 – 10.172.211.254 | 10.172.211.255 |
| 107 | 10.172.212.0/23 | 10.172.212.1 – 10.172.213.254 | 10.172.213.255 |
| 108 | 10.172.214.0/23 | 10.172.214.1 – 10.172.215.254 | 10.172.215.255 |
| 109 | 10.172.216.0/23 | 10.172.216.1 – 10.172.217.254 | 10.172.217.255 |
| 110 | 10.172.218.0/23 | 10.172.218.1 – 10.172.219.254 | 10.172.219.255 |
| 111 | 10.172.220.0/23 | 10.172.220.1 – 10.172.221.254 | 10.172.221.255 |
| 112 | 10.172.222.0/23 | 10.172.222.1 – 10.172.223.254 | 10.172.223.255 |
| 113 | 10.172.224.0/23 | 10.172.224.1 – 10.172.225.254 | 10.172.225.255 |
| 114 | 10.172.226.0/23 | 10.172.226.1 – 10.172.227.254 | 10.172.227.255 |
| 115 | 10.172.228.0/23 | 10.172.228.1 – 10.172.229.254 | 10.172.229.255 |
| 116 | 10.172.230.0/23 | 10.172.230.1 – 10.172.231.254 | 10.172.231.255 |
| 117 | 10.172.232.0/23 | 10.172.232.1 – 10.172.233.254 | 10.172.233.255 |
| 118 | 10.172.234.0/23 | 10.172.234.1 – 10.172.235.254 | 10.172.235.255 |
| 119 | 10.172.236.0/23 | 10.172.236.1 – 10.172.237.254 | 10.172.237.255 |
| 120 | 10.172.238.0/23 | 10.172.238.1 – 10.172.239.254 | 10.172.239.255 |
| 121 | 10.172.240.0/23 | 10.172.240.1 – 10.172.241.254 | 10.172.241.255 |
| 122 | 10.172.242.0/23 | 10.172.242.1 – 10.172.243.254 | 10.172.243.255 |
| 123 | 10.172.244.0/23 | 10.172.244.1 – 10.172.245.254 | 10.172.245.255 |
| 124 | 10.172.246.0/23 | 10.172.246.1 – 10.172.247.254 | 10.172.247.255 |
| 125 | 10.172.248.0/23 | 10.172.248.1 – 10.172.249.254 | 10.172.249.255 |
| 126 | 10.172.250.0/23 | 10.172.250.1 – 10.172.251.254 | 10.172.251.255 |
| 127 | 10.172.252.0/23 | 10.172.252.1 – 10.172.253.254 | 10.172.253.255 |
| 128 | 10.172.254.0/23 | 10.172.254.1 – 10.172.255.254 | 10.172.255.255 |
| 129 | 10.173.0.0/23 | 10.173.0.1 – 10.173.1.254 | 10.173.1.255 |
| 130 | 10.173.2.0/23 | 10.173.2.1 – 10.173.3.254 | 10.173.3.255 |
| 131 | 10.173.4.0/23 | 10.173.4.1 – 10.173.5.254 | 10.173.5.255 |
| 132 | 10.173.6.0/23 | 10.173.6.1 – 10.173.7.254 | 10.173.7.255 |
| 133 | 10.173.8.0/23 | 10.173.8.1 – 10.173.9.254 | 10.173.9.255 |
| 134 | 10.173.10.0/23 | 10.173.10.1 – 10.173.11.254 | 10.173.11.255 |
| 135 | 10.173.12.0/23 | 10.173.12.1 – 10.173.13.254 | 10.173.13.255 |
| 136 | 10.173.14.0/23 | 10.173.14.1 – 10.173.15.254 | 10.173.15.255 |
| 137 | 10.173.16.0/23 | 10.173.16.1 – 10.173.17.254 | 10.173.17.255 |
| 138 | 10.173.18.0/23 | 10.173.18.1 – 10.173.19.254 | 10.173.19.255 |
| 139 | 10.173.20.0/23 | 10.173.20.1 – 10.173.21.254 | 10.173.21.255 |
| 140 | 10.173.22.0/23 | 10.173.22.1 – 10.173.23.254 | 10.173.23.255 |
| 141 | 10.173.24.0/23 | 10.173.24.1 – 10.173.25.254 | 10.173.25.255 |
| 142 | 10.173.26.0/23 | 10.173.26.1 – 10.173.27.254 | 10.173.27.255 |
| 143 | 10.173.28.0/23 | 10.173.28.1 – 10.173.29.254 | 10.173.29.255 |
| 144 | 10.173.30.0/23 | 10.173.30.1 – 10.173.31.254 | 10.173.31.255 |
| 145 | 10.173.32.0/23 | 10.173.32.1 – 10.173.33.254 | 10.173.33.255 |
| 146 | 10.173.34.0/23 | 10.173.34.1 – 10.173.35.254 | 10.173.35.255 |
| 147 | 10.173.36.0/23 | 10.173.36.1 – 10.173.37.254 | 10.173.37.255 |
| 148 | 10.173.38.0/23 | 10.173.38.1 – 10.173.39.254 | 10.173.39.255 |
| 149 | 10.173.40.0/23 | 10.173.40.1 – 10.173.41.254 | 10.173.41.255 |
| 150 | 10.173.42.0/23 | 10.173.42.1 – 10.173.43.254 | 10.173.43.255 |
| 151 | 10.173.44.0/23 | 10.173.44.1 – 10.173.45.254 | 10.173.45.255 |
| 152 | 10.173.46.0/23 | 10.173.46.1 – 10.173.47.254 | 10.173.47.255 |
| 153 | 10.173.48.0/23 | 10.173.48.1 – 10.173.49.254 | 10.173.49.255 |
| 154 | 10.173.50.0/23 | 10.173.50.1 – 10.173.51.254 | 10.173.51.255 |
| 155 | 10.173.52.0/23 | 10.173.52.1 – 10.173.53.254 | 10.173.53.255 |
| 156 | 10.173.54.0/23 | 10.173.54.1 – 10.173.55.254 | 10.173.55.255 |
| 157 | 10.173.56.0/23 | 10.173.56.1 – 10.173.57.254 | 10.173.57.255 |
| 158 | 10.173.58.0/23 | 10.173.58.1 – 10.173.59.254 | 10.173.59.255 |
| 159 | 10.173.60.0/23 | 10.173.60.1 – 10.173.61.254 | 10.173.61.255 |
| 160 | 10.173.62.0/23 | 10.173.62.1 – 10.173.63.254 | 10.173.63.255 |
| 161 | 10.173.64.0/23 | 10.173.64.1 – 10.173.65.254 | 10.173.65.255 |
| 162 | 10.173.66.0/23 | 10.173.66.1 – 10.173.67.254 | 10.173.67.255 |
| 163 | 10.173.68.0/23 | 10.173.68.1 – 10.173.69.254 | 10.173.69.255 |
| 164 | 10.173.70.0/23 | 10.173.70.1 – 10.173.71.254 | 10.173.71.255 |
| 165 | 10.173.72.0/23 | 10.173.72.1 – 10.173.73.254 | 10.173.73.255 |
| 166 | 10.173.74.0/23 | 10.173.74.1 – 10.173.75.254 | 10.173.75.255 |
| 167 | 10.173.76.0/23 | 10.173.76.1 – 10.173.77.254 | 10.173.77.255 |
| 168 | 10.173.78.0/23 | 10.173.78.1 – 10.173.79.254 | 10.173.79.255 |
| 169 | 10.173.80.0/23 | 10.173.80.1 – 10.173.81.254 | 10.173.81.255 |
| 170 | 10.173.82.0/23 | 10.173.82.1 – 10.173.83.254 | 10.173.83.255 |
| 171 | 10.173.84.0/23 | 10.173.84.1 – 10.173.85.254 | 10.173.85.255 |
| 172 | 10.173.86.0/23 | 10.173.86.1 – 10.173.87.254 | 10.173.87.255 |
| 173 | 10.173.88.0/23 | 10.173.88.1 – 10.173.89.254 | 10.173.89.255 |
| 174 | 10.173.90.0/23 | 10.173.90.1 – 10.173.91.254 | 10.173.91.255 |
| 175 | 10.173.92.0/23 | 10.173.92.1 – 10.173.93.254 | 10.173.93.255 |
| 176 | 10.173.94.0/23 | 10.173.94.1 – 10.173.95.254 | 10.173.95.255 |
| 177 | 10.173.96.0/23 | 10.173.96.1 – 10.173.97.254 | 10.173.97.255 |
| 178 | 10.173.98.0/23 | 10.173.98.1 – 10.173.99.254 | 10.173.99.255 |
| 179 | 10.173.100.0/23 | 10.173.100.1 – 10.173.101.254 | 10.173.101.255 |
| 180 | 10.173.102.0/23 | 10.173.102.1 – 10.173.103.254 | 10.173.103.255 |
| 181 | 10.173.104.0/23 | 10.173.104.1 – 10.173.105.254 | 10.173.105.255 |
| 182 | 10.173.106.0/23 | 10.173.106.1 – 10.173.107.254 | 10.173.107.255 |
| 183 | 10.173.108.0/23 | 10.173.108.1 – 10.173.109.254 | 10.173.109.255 |
| 184 | 10.173.110.0/23 | 10.173.110.1 – 10.173.111.254 | 10.173.111.255 |
| 185 | 10.173.112.0/23 | 10.173.112.1 – 10.173.113.254 | 10.173.113.255 |
| 186 | 10.173.114.0/23 | 10.173.114.1 – 10.173.115.254 | 10.173.115.255 |
| 187 | 10.173.116.0/23 | 10.173.116.1 – 10.173.117.254 | 10.173.117.255 |
| 188 | 10.173.118.0/23 | 10.173.118.1 – 10.173.119.254 | 10.173.119.255 |
| 189 | 10.173.120.0/23 | 10.173.120.1 – 10.173.121.254 | 10.173.121.255 |
| 190 | 10.173.122.0/23 | 10.173.122.1 – 10.173.123.254 | 10.173.123.255 |
| 191 | 10.173.124.0/23 | 10.173.124.1 – 10.173.125.254 | 10.173.125.255 |
| 192 | 10.173.126.0/23 | 10.173.126.1 – 10.173.127.254 | 10.173.127.255 |
| 193 | 10.173.128.0/23 | 10.173.128.1 – 10.173.129.254 | 10.173.129.255 |
| 194 | 10.173.130.0/23 | 10.173.130.1 – 10.173.131.254 | 10.173.131.255 |
| 195 | 10.173.132.0/23 | 10.173.132.1 – 10.173.133.254 | 10.173.133.255 |
| 196 | 10.173.134.0/23 | 10.173.134.1 – 10.173.135.254 | 10.173.135.255 |
| 197 | 10.173.136.0/23 | 10.173.136.1 – 10.173.137.254 | 10.173.137.255 |
| 198 | 10.173.138.0/23 | 10.173.138.1 – 10.173.139.254 | 10.173.139.255 |
| 199 | 10.173.140.0/23 | 10.173.140.1 – 10.173.141.254 | 10.173.141.255 |
| 200 | 10.173.142.0/23 | 10.173.142.1 – 10.173.143.254 | 10.173.143.255 |
| 201 | 10.173.144.0/23 | 10.173.144.1 – 10.173.145.254 | 10.173.145.255 |
| 202 | 10.173.146.0/23 | 10.173.146.1 – 10.173.147.254 | 10.173.147.255 |
| 203 | 10.173.148.0/23 | 10.173.148.1 – 10.173.149.254 | 10.173.149.255 |
| 204 | 10.173.150.0/23 | 10.173.150.1 – 10.173.151.254 | 10.173.151.255 |
| 205 | 10.173.152.0/23 | 10.173.152.1 – 10.173.153.254 | 10.173.153.255 |
| 206 | 10.173.154.0/23 | 10.173.154.1 – 10.173.155.254 | 10.173.155.255 |
| 207 | 10.173.156.0/23 | 10.173.156.1 – 10.173.157.254 | 10.173.157.255 |
| 208 | 10.173.158.0/23 | 10.173.158.1 – 10.173.159.254 | 10.173.159.255 |
| 209 | 10.173.160.0/23 | 10.173.160.1 – 10.173.161.254 | 10.173.161.255 |
| 210 | 10.173.162.0/23 | 10.173.162.1 – 10.173.163.254 | 10.173.163.255 |
| 211 | 10.173.164.0/23 | 10.173.164.1 – 10.173.165.254 | 10.173.165.255 |
| 212 | 10.173.166.0/23 | 10.173.166.1 – 10.173.167.254 | 10.173.167.255 |
| 213 | 10.173.168.0/23 | 10.173.168.1 – 10.173.169.254 | 10.173.169.255 |
| 214 | 10.173.170.0/23 | 10.173.170.1 – 10.173.171.254 | 10.173.171.255 |
| 215 | 10.173.172.0/23 | 10.173.172.1 – 10.173.173.254 | 10.173.173.255 |
| 216 | 10.173.174.0/23 | 10.173.174.1 – 10.173.175.254 | 10.173.175.255 |
| 217 | 10.173.176.0/23 | 10.173.176.1 – 10.173.177.254 | 10.173.177.255 |
| 218 | 10.173.178.0/23 | 10.173.178.1 – 10.173.179.254 | 10.173.179.255 |
| 219 | 10.173.180.0/23 | 10.173.180.1 – 10.173.181.254 | 10.173.181.255 |
| 220 | 10.173.182.0/23 | 10.173.182.1 – 10.173.183.254 | 10.173.183.255 |
| 221 | 10.173.184.0/23 | 10.173.184.1 – 10.173.185.254 | 10.173.185.255 |
| 222 | 10.173.186.0/23 | 10.173.186.1 – 10.173.187.254 | 10.173.187.255 |
| 223 | 10.173.188.0/23 | 10.173.188.1 – 10.173.189.254 | 10.173.189.255 |
| 224 | 10.173.190.0/23 | 10.173.190.1 – 10.173.191.254 | 10.173.191.255 |
| 225 | 10.173.192.0/23 | 10.173.192.1 – 10.173.193.254 | 10.173.193.255 |
| 226 | 10.173.194.0/23 | 10.173.194.1 – 10.173.195.254 | 10.173.195.255 |
| 227 | 10.173.196.0/23 | 10.173.196.1 – 10.173.197.254 | 10.173.197.255 |
| 228 | 10.173.198.0/23 | 10.173.198.1 – 10.173.199.254 | 10.173.199.255 |
| 229 | 10.173.200.0/23 | 10.173.200.1 – 10.173.201.254 | 10.173.201.255 |
| 230 | 10.173.202.0/23 | 10.173.202.1 – 10.173.203.254 | 10.173.203.255 |
| 231 | 10.173.204.0/23 | 10.173.204.1 – 10.173.205.254 | 10.173.205.255 |
| 232 | 10.173.206.0/23 | 10.173.206.1 – 10.173.207.254 | 10.173.207.255 |
| 233 | 10.173.208.0/23 | 10.173.208.1 – 10.173.209.254 | 10.173.209.255 |
| 234 | 10.173.210.0/23 | 10.173.210.1 – 10.173.211.254 | 10.173.211.255 |
| 235 | 10.173.212.0/23 | 10.173.212.1 – 10.173.213.254 | 10.173.213.255 |
| 236 | 10.173.214.0/23 | 10.173.214.1 – 10.173.215.254 | 10.173.215.255 |
| 237 | 10.173.216.0/23 | 10.173.216.1 – 10.173.217.254 | 10.173.217.255 |
| 238 | 10.173.218.0/23 | 10.173.218.1 – 10.173.219.254 | 10.173.219.255 |
| 239 | 10.173.220.0/23 | 10.173.220.1 – 10.173.221.254 | 10.173.221.255 |
| 240 | 10.173.222.0/23 | 10.173.222.1 – 10.173.223.254 | 10.173.223.255 |
| 241 | 10.173.224.0/23 | 10.173.224.1 – 10.173.225.254 | 10.173.225.255 |
| 242 | 10.173.226.0/23 | 10.173.226.1 – 10.173.227.254 | 10.173.227.255 |
| 243 | 10.173.228.0/23 | 10.173.228.1 – 10.173.229.254 | 10.173.229.255 |
| 244 | 10.173.230.0/23 | 10.173.230.1 – 10.173.231.254 | 10.173.231.255 |
| 245 | 10.173.232.0/23 | 10.173.232.1 – 10.173.233.254 | 10.173.233.255 |
| 246 | 10.173.234.0/23 | 10.173.234.1 – 10.173.235.254 | 10.173.235.255 |
| 247 | 10.173.236.0/23 | 10.173.236.1 – 10.173.237.254 | 10.173.237.255 |
| 248 | 10.173.238.0/23 | 10.173.238.1 – 10.173.239.254 | 10.173.239.255 |
| 249 | 10.173.240.0/23 | 10.173.240.1 – 10.173.241.254 | 10.173.241.255 |
| 250 | 10.173.242.0/23 | 10.173.242.1 – 10.173.243.254 | 10.173.243.255 |
| 251 | 10.173.244.0/23 | 10.173.244.1 – 10.173.245.254 | 10.173.245.255 |
| 252 | 10.173.246.0/23 | 10.173.246.1 – 10.173.247.254 | 10.173.247.255 |
| 253 | 10.173.248.0/23 | 10.173.248.1 – 10.173.249.254 | 10.173.249.255 |
| 254 | 10.173.250.0/23 | 10.173.250.1 – 10.173.251.254 | 10.173.251.255 |
| 255 | 10.173.252.0/23 | 10.173.252.1 – 10.173.253.254 | 10.173.253.255 |
| 256 | 10.173.254.0/23 | 10.173.254.1 – 10.173.255.254 | 10.173.255.255 |
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.