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
121.139.111.1 0:0:0:0:0:ffff:798b:6f01
121.139.111.2 0:0:0:0:0:ffff:798b:6f02
121.139.111.3 0:0:0:0:0:ffff:798b:6f03
121.139.111.4 0:0:0:0:0:ffff:798b:6f04
121.139.111.5 0:0:0:0:0:ffff:798b:6f05
121.139.111.6 0:0:0:0:0:ffff:798b:6f06
121.139.111.7 0:0:0:0:0:ffff:798b:6f07
121.139.111.8 0:0:0:0:0:ffff:798b:6f08
121.139.111.9 0:0:0:0:0:ffff:798b:6f09
121.139.111.10 0:0:0:0:0:ffff:798b:6f0a
121.139.111.11 0:0:0:0:0:ffff:798b:6f0b
121.139.111.12 0:0:0:0:0:ffff:798b:6f0c
121.139.111.13 0:0:0:0:0:ffff:798b:6f0d
121.139.111.14 0:0:0:0:0:ffff:798b:6f0e
121.139.111.15 0:0:0:0:0:ffff:798b:6f0f
121.139.111.16 0:0:0:0:0:ffff:798b:6f10
121.139.111.17 0:0:0:0:0:ffff:798b:6f11
121.139.111.18 0:0:0:0:0:ffff:798b:6f12
121.139.111.19 0:0:0:0:0:ffff:798b:6f13
121.139.111.20 0:0:0:0:0:ffff:798b:6f14
121.139.111.21 0:0:0:0:0:ffff:798b:6f15
121.139.111.22 0:0:0:0:0:ffff:798b:6f16
121.139.111.23 0:0:0:0:0:ffff:798b:6f17
121.139.111.24 0:0:0:0:0:ffff:798b:6f18
121.139.111.25 0:0:0:0:0:ffff:798b:6f19
121.139.111.26 0:0:0:0:0:ffff:798b:6f1a
121.139.111.27 0:0:0:0:0:ffff:798b:6f1b
121.139.111.28 0:0:0:0:0:ffff:798b:6f1c
121.139.111.29 0:0:0:0:0:ffff:798b:6f1d
121.139.111.30 0:0:0:0:0:ffff:798b:6f1e
121.139.111.31 0:0:0:0:0:ffff:798b:6f1f
121.139.111.32 0:0:0:0:0:ffff:798b:6f20
121.139.111.33 0:0:0:0:0:ffff:798b:6f21
121.139.111.34 0:0:0:0:0:ffff:798b:6f22
121.139.111.35 0:0:0:0:0:ffff:798b:6f23
121.139.111.36 0:0:0:0:0:ffff:798b:6f24
121.139.111.37 0:0:0:0:0:ffff:798b:6f25
121.139.111.38 0:0:0:0:0:ffff:798b:6f26
121.139.111.39 0:0:0:0:0:ffff:798b:6f27
121.139.111.40 0:0:0:0:0:ffff:798b:6f28
121.139.111.41 0:0:0:0:0:ffff:798b:6f29
121.139.111.42 0:0:0:0:0:ffff:798b:6f2a
121.139.111.43 0:0:0:0:0:ffff:798b:6f2b
121.139.111.44 0:0:0:0:0:ffff:798b:6f2c
121.139.111.45 0:0:0:0:0:ffff:798b:6f2d
121.139.111.46 0:0:0:0:0:ffff:798b:6f2e
121.139.111.47 0:0:0:0:0:ffff:798b:6f2f
121.139.111.48 0:0:0:0:0:ffff:798b:6f30
121.139.111.49 0:0:0:0:0:ffff:798b:6f31
121.139.111.50 0:0:0:0:0:ffff:798b:6f32
121.139.111.51 0:0:0:0:0:ffff:798b:6f33
121.139.111.52 0:0:0:0:0:ffff:798b:6f34
121.139.111.53 0:0:0:0:0:ffff:798b:6f35
121.139.111.54 0:0:0:0:0:ffff:798b:6f36
121.139.111.55 0:0:0:0:0:ffff:798b:6f37
121.139.111.56 0:0:0:0:0:ffff:798b:6f38
121.139.111.57 0:0:0:0:0:ffff:798b:6f39
121.139.111.58 0:0:0:0:0:ffff:798b:6f3a
121.139.111.59 0:0:0:0:0:ffff:798b:6f3b
121.139.111.60 0:0:0:0:0:ffff:798b:6f3c


121.139.111.61 0:0:0:0:0:ffff:798b:6f3d
121.139.111.62 0:0:0:0:0:ffff:798b:6f3e
121.139.111.63 0:0:0:0:0:ffff:798b:6f3f
121.139.111.64 0:0:0:0:0:ffff:798b:6f40
121.139.111.65 0:0:0:0:0:ffff:798b:6f41
121.139.111.66 0:0:0:0:0:ffff:798b:6f42
121.139.111.67 0:0:0:0:0:ffff:798b:6f43
121.139.111.68 0:0:0:0:0:ffff:798b:6f44
121.139.111.69 0:0:0:0:0:ffff:798b:6f45
121.139.111.70 0:0:0:0:0:ffff:798b:6f46
121.139.111.71 0:0:0:0:0:ffff:798b:6f47
121.139.111.72 0:0:0:0:0:ffff:798b:6f48
121.139.111.73 0:0:0:0:0:ffff:798b:6f49
121.139.111.74 0:0:0:0:0:ffff:798b:6f4a
121.139.111.75 0:0:0:0:0:ffff:798b:6f4b
121.139.111.76 0:0:0:0:0:ffff:798b:6f4c
121.139.111.77 0:0:0:0:0:ffff:798b:6f4d
121.139.111.78 0:0:0:0:0:ffff:798b:6f4e
121.139.111.79 0:0:0:0:0:ffff:798b:6f4f
121.139.111.80 0:0:0:0:0:ffff:798b:6f50
121.139.111.81 0:0:0:0:0:ffff:798b:6f51
121.139.111.82 0:0:0:0:0:ffff:798b:6f52
121.139.111.83 0:0:0:0:0:ffff:798b:6f53
121.139.111.84 0:0:0:0:0:ffff:798b:6f54
121.139.111.85 0:0:0:0:0:ffff:798b:6f55
121.139.111.86 0:0:0:0:0:ffff:798b:6f56
121.139.111.87 0:0:0:0:0:ffff:798b:6f57
121.139.111.88 0:0:0:0:0:ffff:798b:6f58
121.139.111.89 0:0:0:0:0:ffff:798b:6f59
121.139.111.90 0:0:0:0:0:ffff:798b:6f5a
121.139.111.91 0:0:0:0:0:ffff:798b:6f5b
121.139.111.92 0:0:0:0:0:ffff:798b:6f5c
121.139.111.93 0:0:0:0:0:ffff:798b:6f5d
121.139.111.94 0:0:0:0:0:ffff:798b:6f5e
121.139.111.95 0:0:0:0:0:ffff:798b:6f5f
121.139.111.96 0:0:0:0:0:ffff:798b:6f60
121.139.111.97 0:0:0:0:0:ffff:798b:6f61
121.139.111.98 0:0:0:0:0:ffff:798b:6f62
121.139.111.99 0:0:0:0:0:ffff:798b:6f63
121.139.111.100 0:0:0:0:0:ffff:798b:6f64
121.139.111.101 0:0:0:0:0:ffff:798b:6f65
121.139.111.102 0:0:0:0:0:ffff:798b:6f66
121.139.111.103 0:0:0:0:0:ffff:798b:6f67
121.139.111.104 0:0:0:0:0:ffff:798b:6f68
121.139.111.105 0:0:0:0:0:ffff:798b:6f69
121.139.111.106 0:0:0:0:0:ffff:798b:6f6a
121.139.111.107 0:0:0:0:0:ffff:798b:6f6b
121.139.111.108 0:0:0:0:0:ffff:798b:6f6c
121.139.111.109 0:0:0:0:0:ffff:798b:6f6d
121.139.111.110 0:0:0:0:0:ffff:798b:6f6e
121.139.111.111 0:0:0:0:0:ffff:798b:6f6f
121.139.111.112 0:0:0:0:0:ffff:798b:6f70
121.139.111.113 0:0:0:0:0:ffff:798b:6f71
121.139.111.114 0:0:0:0:0:ffff:798b:6f72
121.139.111.115 0:0:0:0:0:ffff:798b:6f73
121.139.111.116 0:0:0:0:0:ffff:798b:6f74
121.139.111.117 0:0:0:0:0:ffff:798b:6f75
121.139.111.118 0:0:0:0:0:ffff:798b:6f76
121.139.111.119 0:0:0:0:0:ffff:798b:6f77
121.139.111.120 0:0:0:0:0:ffff:798b:6f78


121.139.111.121 0:0:0:0:0:ffff:798b:6f79
121.139.111.122 0:0:0:0:0:ffff:798b:6f7a
121.139.111.123 0:0:0:0:0:ffff:798b:6f7b
121.139.111.124 0:0:0:0:0:ffff:798b:6f7c
121.139.111.125 0:0:0:0:0:ffff:798b:6f7d
121.139.111.126 0:0:0:0:0:ffff:798b:6f7e
121.139.111.127 0:0:0:0:0:ffff:798b:6f7f
121.139.111.128 0:0:0:0:0:ffff:798b:6f80
121.139.111.129 0:0:0:0:0:ffff:798b:6f81
121.139.111.130 0:0:0:0:0:ffff:798b:6f82
121.139.111.131 0:0:0:0:0:ffff:798b:6f83
121.139.111.132 0:0:0:0:0:ffff:798b:6f84
121.139.111.133 0:0:0:0:0:ffff:798b:6f85
121.139.111.134 0:0:0:0:0:ffff:798b:6f86
121.139.111.135 0:0:0:0:0:ffff:798b:6f87
121.139.111.136 0:0:0:0:0:ffff:798b:6f88
121.139.111.137 0:0:0:0:0:ffff:798b:6f89
121.139.111.138 0:0:0:0:0:ffff:798b:6f8a
121.139.111.139 0:0:0:0:0:ffff:798b:6f8b
121.139.111.140 0:0:0:0:0:ffff:798b:6f8c
121.139.111.141 0:0:0:0:0:ffff:798b:6f8d
121.139.111.142 0:0:0:0:0:ffff:798b:6f8e
121.139.111.143 0:0:0:0:0:ffff:798b:6f8f
121.139.111.144 0:0:0:0:0:ffff:798b:6f90
121.139.111.145 0:0:0:0:0:ffff:798b:6f91
121.139.111.146 0:0:0:0:0:ffff:798b:6f92
121.139.111.147 0:0:0:0:0:ffff:798b:6f93
121.139.111.148 0:0:0:0:0:ffff:798b:6f94
121.139.111.149 0:0:0:0:0:ffff:798b:6f95
121.139.111.150 0:0:0:0:0:ffff:798b:6f96
121.139.111.151 0:0:0:0:0:ffff:798b:6f97
121.139.111.152 0:0:0:0:0:ffff:798b:6f98
121.139.111.153 0:0:0:0:0:ffff:798b:6f99
121.139.111.154 0:0:0:0:0:ffff:798b:6f9a
121.139.111.155 0:0:0:0:0:ffff:798b:6f9b
121.139.111.156 0:0:0:0:0:ffff:798b:6f9c
121.139.111.157 0:0:0:0:0:ffff:798b:6f9d
121.139.111.158 0:0:0:0:0:ffff:798b:6f9e
121.139.111.159 0:0:0:0:0:ffff:798b:6f9f
121.139.111.160 0:0:0:0:0:ffff:798b:6fa0
121.139.111.161 0:0:0:0:0:ffff:798b:6fa1
121.139.111.162 0:0:0:0:0:ffff:798b:6fa2
121.139.111.163 0:0:0:0:0:ffff:798b:6fa3
121.139.111.164 0:0:0:0:0:ffff:798b:6fa4
121.139.111.165 0:0:0:0:0:ffff:798b:6fa5
121.139.111.166 0:0:0:0:0:ffff:798b:6fa6
121.139.111.167 0:0:0:0:0:ffff:798b:6fa7
121.139.111.168 0:0:0:0:0:ffff:798b:6fa8
121.139.111.169 0:0:0:0:0:ffff:798b:6fa9
121.139.111.170 0:0:0:0:0:ffff:798b:6faa
121.139.111.171 0:0:0:0:0:ffff:798b:6fab
121.139.111.172 0:0:0:0:0:ffff:798b:6fac
121.139.111.173 0:0:0:0:0:ffff:798b:6fad
121.139.111.174 0:0:0:0:0:ffff:798b:6fae
121.139.111.175 0:0:0:0:0:ffff:798b:6faf
121.139.111.176 0:0:0:0:0:ffff:798b:6fb0
121.139.111.177 0:0:0:0:0:ffff:798b:6fb1
121.139.111.178 0:0:0:0:0:ffff:798b:6fb2
121.139.111.179 0:0:0:0:0:ffff:798b:6fb3
121.139.111.180 0:0:0:0:0:ffff:798b:6fb4


121.139.111.181 0:0:0:0:0:ffff:798b:6fb5
121.139.111.182 0:0:0:0:0:ffff:798b:6fb6
121.139.111.183 0:0:0:0:0:ffff:798b:6fb7
121.139.111.184 0:0:0:0:0:ffff:798b:6fb8
121.139.111.185 0:0:0:0:0:ffff:798b:6fb9
121.139.111.186 0:0:0:0:0:ffff:798b:6fba
121.139.111.187 0:0:0:0:0:ffff:798b:6fbb
121.139.111.188 0:0:0:0:0:ffff:798b:6fbc
121.139.111.189 0:0:0:0:0:ffff:798b:6fbd
121.139.111.190 0:0:0:0:0:ffff:798b:6fbe
121.139.111.191 0:0:0:0:0:ffff:798b:6fbf
121.139.111.192 0:0:0:0:0:ffff:798b:6fc0
121.139.111.193 0:0:0:0:0:ffff:798b:6fc1
121.139.111.194 0:0:0:0:0:ffff:798b:6fc2
121.139.111.195 0:0:0:0:0:ffff:798b:6fc3
121.139.111.196 0:0:0:0:0:ffff:798b:6fc4
121.139.111.197 0:0:0:0:0:ffff:798b:6fc5
121.139.111.198 0:0:0:0:0:ffff:798b:6fc6
121.139.111.199 0:0:0:0:0:ffff:798b:6fc7
121.139.111.200 0:0:0:0:0:ffff:798b:6fc8
121.139.111.201 0:0:0:0:0:ffff:798b:6fc9
121.139.111.202 0:0:0:0:0:ffff:798b:6fca
121.139.111.203 0:0:0:0:0:ffff:798b:6fcb
121.139.111.204 0:0:0:0:0:ffff:798b:6fcc
121.139.111.205 0:0:0:0:0:ffff:798b:6fcd
121.139.111.206 0:0:0:0:0:ffff:798b:6fce
121.139.111.207 0:0:0:0:0:ffff:798b:6fcf
121.139.111.208 0:0:0:0:0:ffff:798b:6fd0
121.139.111.209 0:0:0:0:0:ffff:798b:6fd1
121.139.111.210 0:0:0:0:0:ffff:798b:6fd2
121.139.111.211 0:0:0:0:0:ffff:798b:6fd3
121.139.111.212 0:0:0:0:0:ffff:798b:6fd4
121.139.111.213 0:0:0:0:0:ffff:798b:6fd5
121.139.111.214 0:0:0:0:0:ffff:798b:6fd6
121.139.111.215 0:0:0:0:0:ffff:798b:6fd7
121.139.111.216 0:0:0:0:0:ffff:798b:6fd8
121.139.111.217 0:0:0:0:0:ffff:798b:6fd9
121.139.111.218 0:0:0:0:0:ffff:798b:6fda
121.139.111.219 0:0:0:0:0:ffff:798b:6fdb
121.139.111.220 0:0:0:0:0:ffff:798b:6fdc
121.139.111.221 0:0:0:0:0:ffff:798b:6fdd
121.139.111.222 0:0:0:0:0:ffff:798b:6fde
121.139.111.223 0:0:0:0:0:ffff:798b:6fdf
121.139.111.224 0:0:0:0:0:ffff:798b:6fe0
121.139.111.225 0:0:0:0:0:ffff:798b:6fe1
121.139.111.226 0:0:0:0:0:ffff:798b:6fe2
121.139.111.227 0:0:0:0:0:ffff:798b:6fe3
121.139.111.228 0:0:0:0:0:ffff:798b:6fe4
121.139.111.229 0:0:0:0:0:ffff:798b:6fe5
121.139.111.230 0:0:0:0:0:ffff:798b:6fe6
121.139.111.231 0:0:0:0:0:ffff:798b:6fe7
121.139.111.232 0:0:0:0:0:ffff:798b:6fe8
121.139.111.233 0:0:0:0:0:ffff:798b:6fe9
121.139.111.234 0:0:0:0:0:ffff:798b:6fea
121.139.111.235 0:0:0:0:0:ffff:798b:6feb
121.139.111.236 0:0:0:0:0:ffff:798b:6fec
121.139.111.237 0:0:0:0:0:ffff:798b:6fed
121.139.111.238 0:0:0:0:0:ffff:798b:6fee
121.139.111.239 0:0:0:0:0:ffff:798b:6fef
121.139.111.240 0:0:0:0:0:ffff:798b:6ff0
121.139.111.241 0:0:0:0:0:ffff:798b:6ff1
121.139.111.242 0:0:0:0:0:ffff:798b:6ff2
121.139.111.243 0:0:0:0:0:ffff:798b:6ff3
121.139.111.244 0:0:0:0:0:ffff:798b:6ff4
121.139.111.245 0:0:0:0:0:ffff:798b:6ff5
121.139.111.246 0:0:0:0:0:ffff:798b:6ff6
121.139.111.247 0:0:0:0:0:ffff:798b:6ff7
121.139.111.248 0:0:0:0:0:ffff:798b:6ff8
121.139.111.249 0:0:0:0:0:ffff:798b:6ff9
121.139.111.250 0:0:0:0:0:ffff:798b:6ffa
121.139.111.251 0:0:0:0:0:ffff:798b:6ffb
121.139.111.252 0:0:0:0:0:ffff:798b:6ffc
121.139.111.253 0:0:0:0:0:ffff:798b:6ffd
121.139.111.254 0:0:0:0:0:ffff:798b:6ffe
121.139.111.255 0:0:0:0:0:ffff:798b:6fff


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.