Find IP IPv4 Network/Subnet and its host address ranges

What is an IPv4 IP address its network and host address ranges?

An IPv4 IP address is an address used in order to uniquely identify a device on an IP network. The address is made up of 32 binary bits, which can be divisible into a network portion and host portion with the help of a subnet mask. The 32 binary bits are broken into four octets (1 octet = 8 bits). Each octet is converted to decimal and separated by a period (dot).

How to Subnet IPv4? Its simple answer is that subnetting is the process of taking a network and splitting it into smaller networks, known as subnets. It's used to free up more public IPv4 addresses and segment networks for security and easier management.
Following are the ranges of IPv4 subnet/network address and their host addresses.

IPv4 AddressIPv6 Address
3.123.139.1 0:0:0:0:0:ffff:37b:8b01
3.123.139.2 0:0:0:0:0:ffff:37b:8b02
3.123.139.3 0:0:0:0:0:ffff:37b:8b03
3.123.139.4 0:0:0:0:0:ffff:37b:8b04
3.123.139.5 0:0:0:0:0:ffff:37b:8b05
3.123.139.6 0:0:0:0:0:ffff:37b:8b06
3.123.139.7 0:0:0:0:0:ffff:37b:8b07
3.123.139.8 0:0:0:0:0:ffff:37b:8b08
3.123.139.9 0:0:0:0:0:ffff:37b:8b09
3.123.139.10 0:0:0:0:0:ffff:37b:8b0a
3.123.139.11 0:0:0:0:0:ffff:37b:8b0b
3.123.139.12 0:0:0:0:0:ffff:37b:8b0c
3.123.139.13 0:0:0:0:0:ffff:37b:8b0d
3.123.139.14 0:0:0:0:0:ffff:37b:8b0e
3.123.139.15 0:0:0:0:0:ffff:37b:8b0f
3.123.139.16 0:0:0:0:0:ffff:37b:8b10
3.123.139.17 0:0:0:0:0:ffff:37b:8b11
3.123.139.18 0:0:0:0:0:ffff:37b:8b12
3.123.139.19 0:0:0:0:0:ffff:37b:8b13
3.123.139.20 0:0:0:0:0:ffff:37b:8b14
3.123.139.21 0:0:0:0:0:ffff:37b:8b15
3.123.139.22 0:0:0:0:0:ffff:37b:8b16
3.123.139.23 0:0:0:0:0:ffff:37b:8b17
3.123.139.24 0:0:0:0:0:ffff:37b:8b18
3.123.139.25 0:0:0:0:0:ffff:37b:8b19
3.123.139.26 0:0:0:0:0:ffff:37b:8b1a
3.123.139.27 0:0:0:0:0:ffff:37b:8b1b
3.123.139.28 0:0:0:0:0:ffff:37b:8b1c
3.123.139.29 0:0:0:0:0:ffff:37b:8b1d
3.123.139.30 0:0:0:0:0:ffff:37b:8b1e
3.123.139.31 0:0:0:0:0:ffff:37b:8b1f
3.123.139.32 0:0:0:0:0:ffff:37b:8b20
3.123.139.33 0:0:0:0:0:ffff:37b:8b21
3.123.139.34 0:0:0:0:0:ffff:37b:8b22
3.123.139.35 0:0:0:0:0:ffff:37b:8b23
3.123.139.36 0:0:0:0:0:ffff:37b:8b24
3.123.139.37 0:0:0:0:0:ffff:37b:8b25
3.123.139.38 0:0:0:0:0:ffff:37b:8b26
3.123.139.39 0:0:0:0:0:ffff:37b:8b27
3.123.139.40 0:0:0:0:0:ffff:37b:8b28
3.123.139.41 0:0:0:0:0:ffff:37b:8b29
3.123.139.42 0:0:0:0:0:ffff:37b:8b2a
3.123.139.43 0:0:0:0:0:ffff:37b:8b2b
3.123.139.44 0:0:0:0:0:ffff:37b:8b2c
3.123.139.45 0:0:0:0:0:ffff:37b:8b2d
3.123.139.46 0:0:0:0:0:ffff:37b:8b2e
3.123.139.47 0:0:0:0:0:ffff:37b:8b2f
3.123.139.48 0:0:0:0:0:ffff:37b:8b30
3.123.139.49 0:0:0:0:0:ffff:37b:8b31
3.123.139.50 0:0:0:0:0:ffff:37b:8b32
3.123.139.51 0:0:0:0:0:ffff:37b:8b33
3.123.139.52 0:0:0:0:0:ffff:37b:8b34
3.123.139.53 0:0:0:0:0:ffff:37b:8b35
3.123.139.54 0:0:0:0:0:ffff:37b:8b36
3.123.139.55 0:0:0:0:0:ffff:37b:8b37
3.123.139.56 0:0:0:0:0:ffff:37b:8b38
3.123.139.57 0:0:0:0:0:ffff:37b:8b39
3.123.139.58 0:0:0:0:0:ffff:37b:8b3a
3.123.139.59 0:0:0:0:0:ffff:37b:8b3b
3.123.139.60 0:0:0:0:0:ffff:37b:8b3c


3.123.139.61 0:0:0:0:0:ffff:37b:8b3d
3.123.139.62 0:0:0:0:0:ffff:37b:8b3e
3.123.139.63 0:0:0:0:0:ffff:37b:8b3f
3.123.139.64 0:0:0:0:0:ffff:37b:8b40
3.123.139.65 0:0:0:0:0:ffff:37b:8b41
3.123.139.66 0:0:0:0:0:ffff:37b:8b42
3.123.139.67 0:0:0:0:0:ffff:37b:8b43
3.123.139.68 0:0:0:0:0:ffff:37b:8b44
3.123.139.69 0:0:0:0:0:ffff:37b:8b45
3.123.139.70 0:0:0:0:0:ffff:37b:8b46
3.123.139.71 0:0:0:0:0:ffff:37b:8b47
3.123.139.72 0:0:0:0:0:ffff:37b:8b48
3.123.139.73 0:0:0:0:0:ffff:37b:8b49
3.123.139.74 0:0:0:0:0:ffff:37b:8b4a
3.123.139.75 0:0:0:0:0:ffff:37b:8b4b
3.123.139.76 0:0:0:0:0:ffff:37b:8b4c
3.123.139.77 0:0:0:0:0:ffff:37b:8b4d
3.123.139.78 0:0:0:0:0:ffff:37b:8b4e
3.123.139.79 0:0:0:0:0:ffff:37b:8b4f
3.123.139.80 0:0:0:0:0:ffff:37b:8b50
3.123.139.81 0:0:0:0:0:ffff:37b:8b51
3.123.139.82 0:0:0:0:0:ffff:37b:8b52
3.123.139.83 0:0:0:0:0:ffff:37b:8b53
3.123.139.84 0:0:0:0:0:ffff:37b:8b54
3.123.139.85 0:0:0:0:0:ffff:37b:8b55
3.123.139.86 0:0:0:0:0:ffff:37b:8b56
3.123.139.87 0:0:0:0:0:ffff:37b:8b57
3.123.139.88 0:0:0:0:0:ffff:37b:8b58
3.123.139.89 0:0:0:0:0:ffff:37b:8b59
3.123.139.90 0:0:0:0:0:ffff:37b:8b5a
3.123.139.91 0:0:0:0:0:ffff:37b:8b5b
3.123.139.92 0:0:0:0:0:ffff:37b:8b5c
3.123.139.93 0:0:0:0:0:ffff:37b:8b5d
3.123.139.94 0:0:0:0:0:ffff:37b:8b5e
3.123.139.95 0:0:0:0:0:ffff:37b:8b5f
3.123.139.96 0:0:0:0:0:ffff:37b:8b60
3.123.139.97 0:0:0:0:0:ffff:37b:8b61
3.123.139.98 0:0:0:0:0:ffff:37b:8b62
3.123.139.99 0:0:0:0:0:ffff:37b:8b63
3.123.139.100 0:0:0:0:0:ffff:37b:8b64
3.123.139.101 0:0:0:0:0:ffff:37b:8b65
3.123.139.102 0:0:0:0:0:ffff:37b:8b66
3.123.139.103 0:0:0:0:0:ffff:37b:8b67
3.123.139.104 0:0:0:0:0:ffff:37b:8b68
3.123.139.105 0:0:0:0:0:ffff:37b:8b69
3.123.139.106 0:0:0:0:0:ffff:37b:8b6a
3.123.139.107 0:0:0:0:0:ffff:37b:8b6b
3.123.139.108 0:0:0:0:0:ffff:37b:8b6c
3.123.139.109 0:0:0:0:0:ffff:37b:8b6d
3.123.139.110 0:0:0:0:0:ffff:37b:8b6e
3.123.139.111 0:0:0:0:0:ffff:37b:8b6f
3.123.139.112 0:0:0:0:0:ffff:37b:8b70
3.123.139.113 0:0:0:0:0:ffff:37b:8b71
3.123.139.114 0:0:0:0:0:ffff:37b:8b72
3.123.139.115 0:0:0:0:0:ffff:37b:8b73
3.123.139.116 0:0:0:0:0:ffff:37b:8b74
3.123.139.117 0:0:0:0:0:ffff:37b:8b75
3.123.139.118 0:0:0:0:0:ffff:37b:8b76
3.123.139.119 0:0:0:0:0:ffff:37b:8b77
3.123.139.120 0:0:0:0:0:ffff:37b:8b78


3.123.139.121 0:0:0:0:0:ffff:37b:8b79
3.123.139.122 0:0:0:0:0:ffff:37b:8b7a
3.123.139.123 0:0:0:0:0:ffff:37b:8b7b
3.123.139.124 0:0:0:0:0:ffff:37b:8b7c
3.123.139.125 0:0:0:0:0:ffff:37b:8b7d
3.123.139.126 0:0:0:0:0:ffff:37b:8b7e
3.123.139.127 0:0:0:0:0:ffff:37b:8b7f
3.123.139.128 0:0:0:0:0:ffff:37b:8b80
3.123.139.129 0:0:0:0:0:ffff:37b:8b81
3.123.139.130 0:0:0:0:0:ffff:37b:8b82
3.123.139.131 0:0:0:0:0:ffff:37b:8b83
3.123.139.132 0:0:0:0:0:ffff:37b:8b84
3.123.139.133 0:0:0:0:0:ffff:37b:8b85
3.123.139.134 0:0:0:0:0:ffff:37b:8b86
3.123.139.135 0:0:0:0:0:ffff:37b:8b87
3.123.139.136 0:0:0:0:0:ffff:37b:8b88
3.123.139.137 0:0:0:0:0:ffff:37b:8b89
3.123.139.138 0:0:0:0:0:ffff:37b:8b8a
3.123.139.139 0:0:0:0:0:ffff:37b:8b8b
3.123.139.140 0:0:0:0:0:ffff:37b:8b8c
3.123.139.141 0:0:0:0:0:ffff:37b:8b8d
3.123.139.142 0:0:0:0:0:ffff:37b:8b8e
3.123.139.143 0:0:0:0:0:ffff:37b:8b8f
3.123.139.144 0:0:0:0:0:ffff:37b:8b90
3.123.139.145 0:0:0:0:0:ffff:37b:8b91
3.123.139.146 0:0:0:0:0:ffff:37b:8b92
3.123.139.147 0:0:0:0:0:ffff:37b:8b93
3.123.139.148 0:0:0:0:0:ffff:37b:8b94
3.123.139.149 0:0:0:0:0:ffff:37b:8b95
3.123.139.150 0:0:0:0:0:ffff:37b:8b96
3.123.139.151 0:0:0:0:0:ffff:37b:8b97
3.123.139.152 0:0:0:0:0:ffff:37b:8b98
3.123.139.153 0:0:0:0:0:ffff:37b:8b99
3.123.139.154 0:0:0:0:0:ffff:37b:8b9a
3.123.139.155 0:0:0:0:0:ffff:37b:8b9b
3.123.139.156 0:0:0:0:0:ffff:37b:8b9c
3.123.139.157 0:0:0:0:0:ffff:37b:8b9d
3.123.139.158 0:0:0:0:0:ffff:37b:8b9e
3.123.139.159 0:0:0:0:0:ffff:37b:8b9f
3.123.139.160 0:0:0:0:0:ffff:37b:8ba0
3.123.139.161 0:0:0:0:0:ffff:37b:8ba1
3.123.139.162 0:0:0:0:0:ffff:37b:8ba2
3.123.139.163 0:0:0:0:0:ffff:37b:8ba3
3.123.139.164 0:0:0:0:0:ffff:37b:8ba4
3.123.139.165 0:0:0:0:0:ffff:37b:8ba5
3.123.139.166 0:0:0:0:0:ffff:37b:8ba6
3.123.139.167 0:0:0:0:0:ffff:37b:8ba7
3.123.139.168 0:0:0:0:0:ffff:37b:8ba8
3.123.139.169 0:0:0:0:0:ffff:37b:8ba9
3.123.139.170 0:0:0:0:0:ffff:37b:8baa
3.123.139.171 0:0:0:0:0:ffff:37b:8bab
3.123.139.172 0:0:0:0:0:ffff:37b:8bac
3.123.139.173 0:0:0:0:0:ffff:37b:8bad
3.123.139.174 0:0:0:0:0:ffff:37b:8bae
3.123.139.175 0:0:0:0:0:ffff:37b:8baf
3.123.139.176 0:0:0:0:0:ffff:37b:8bb0
3.123.139.177 0:0:0:0:0:ffff:37b:8bb1
3.123.139.178 0:0:0:0:0:ffff:37b:8bb2
3.123.139.179 0:0:0:0:0:ffff:37b:8bb3
3.123.139.180 0:0:0:0:0:ffff:37b:8bb4


3.123.139.181 0:0:0:0:0:ffff:37b:8bb5
3.123.139.182 0:0:0:0:0:ffff:37b:8bb6
3.123.139.183 0:0:0:0:0:ffff:37b:8bb7
3.123.139.184 0:0:0:0:0:ffff:37b:8bb8
3.123.139.185 0:0:0:0:0:ffff:37b:8bb9
3.123.139.186 0:0:0:0:0:ffff:37b:8bba
3.123.139.187 0:0:0:0:0:ffff:37b:8bbb
3.123.139.188 0:0:0:0:0:ffff:37b:8bbc
3.123.139.189 0:0:0:0:0:ffff:37b:8bbd
3.123.139.190 0:0:0:0:0:ffff:37b:8bbe
3.123.139.191 0:0:0:0:0:ffff:37b:8bbf
3.123.139.192 0:0:0:0:0:ffff:37b:8bc0
3.123.139.193 0:0:0:0:0:ffff:37b:8bc1
3.123.139.194 0:0:0:0:0:ffff:37b:8bc2
3.123.139.195 0:0:0:0:0:ffff:37b:8bc3
3.123.139.196 0:0:0:0:0:ffff:37b:8bc4
3.123.139.197 0:0:0:0:0:ffff:37b:8bc5
3.123.139.198 0:0:0:0:0:ffff:37b:8bc6
3.123.139.199 0:0:0:0:0:ffff:37b:8bc7
3.123.139.200 0:0:0:0:0:ffff:37b:8bc8
3.123.139.201 0:0:0:0:0:ffff:37b:8bc9
3.123.139.202 0:0:0:0:0:ffff:37b:8bca
3.123.139.203 0:0:0:0:0:ffff:37b:8bcb
3.123.139.204 0:0:0:0:0:ffff:37b:8bcc
3.123.139.205 0:0:0:0:0:ffff:37b:8bcd
3.123.139.206 0:0:0:0:0:ffff:37b:8bce
3.123.139.207 0:0:0:0:0:ffff:37b:8bcf
3.123.139.208 0:0:0:0:0:ffff:37b:8bd0
3.123.139.209 0:0:0:0:0:ffff:37b:8bd1
3.123.139.210 0:0:0:0:0:ffff:37b:8bd2
3.123.139.211 0:0:0:0:0:ffff:37b:8bd3
3.123.139.212 0:0:0:0:0:ffff:37b:8bd4
3.123.139.213 0:0:0:0:0:ffff:37b:8bd5
3.123.139.214 0:0:0:0:0:ffff:37b:8bd6
3.123.139.215 0:0:0:0:0:ffff:37b:8bd7
3.123.139.216 0:0:0:0:0:ffff:37b:8bd8
3.123.139.217 0:0:0:0:0:ffff:37b:8bd9
3.123.139.218 0:0:0:0:0:ffff:37b:8bda
3.123.139.219 0:0:0:0:0:ffff:37b:8bdb
3.123.139.220 0:0:0:0:0:ffff:37b:8bdc
3.123.139.221 0:0:0:0:0:ffff:37b:8bdd
3.123.139.222 0:0:0:0:0:ffff:37b:8bde
3.123.139.223 0:0:0:0:0:ffff:37b:8bdf
3.123.139.224 0:0:0:0:0:ffff:37b:8be0
3.123.139.225 0:0:0:0:0:ffff:37b:8be1
3.123.139.226 0:0:0:0:0:ffff:37b:8be2
3.123.139.227 0:0:0:0:0:ffff:37b:8be3
3.123.139.228 0:0:0:0:0:ffff:37b:8be4
3.123.139.229 0:0:0:0:0:ffff:37b:8be5
3.123.139.230 0:0:0:0:0:ffff:37b:8be6
3.123.139.231 0:0:0:0:0:ffff:37b:8be7
3.123.139.232 0:0:0:0:0:ffff:37b:8be8
3.123.139.233 0:0:0:0:0:ffff:37b:8be9
3.123.139.234 0:0:0:0:0:ffff:37b:8bea
3.123.139.235 0:0:0:0:0:ffff:37b:8beb
3.123.139.236 0:0:0:0:0:ffff:37b:8bec
3.123.139.237 0:0:0:0:0:ffff:37b:8bed
3.123.139.238 0:0:0:0:0:ffff:37b:8bee
3.123.139.239 0:0:0:0:0:ffff:37b:8bef
3.123.139.240 0:0:0:0:0:ffff:37b:8bf0
3.123.139.241 0:0:0:0:0:ffff:37b:8bf1
3.123.139.242 0:0:0:0:0:ffff:37b:8bf2
3.123.139.243 0:0:0:0:0:ffff:37b:8bf3
3.123.139.244 0:0:0:0:0:ffff:37b:8bf4
3.123.139.245 0:0:0:0:0:ffff:37b:8bf5
3.123.139.246 0:0:0:0:0:ffff:37b:8bf6
3.123.139.247 0:0:0:0:0:ffff:37b:8bf7
3.123.139.248 0:0:0:0:0:ffff:37b:8bf8
3.123.139.249 0:0:0:0:0:ffff:37b:8bf9
3.123.139.250 0:0:0:0:0:ffff:37b:8bfa
3.123.139.251 0:0:0:0:0:ffff:37b:8bfb
3.123.139.252 0:0:0:0:0:ffff:37b:8bfc
3.123.139.253 0:0:0:0:0:ffff:37b:8bfd
3.123.139.254 0:0:0:0:0:ffff:37b:8bfe
3.123.139.255 0:0:0:0:0:ffff:37b:8bff


How we got IPv4 subnet masks?

An IPv4 subnet mask consists of 32 bits; it is a sequence of ones (1) followed by a block of zeros (0). The ones indicate bits in the address used for the network prefix and the trailing block of zeros designates that part as being the host identifier.