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
65.121.127.1 0:0:0:0:0:ffff:4179:7f01
65.121.127.2 0:0:0:0:0:ffff:4179:7f02
65.121.127.3 0:0:0:0:0:ffff:4179:7f03
65.121.127.4 0:0:0:0:0:ffff:4179:7f04
65.121.127.5 0:0:0:0:0:ffff:4179:7f05
65.121.127.6 0:0:0:0:0:ffff:4179:7f06
65.121.127.7 0:0:0:0:0:ffff:4179:7f07
65.121.127.8 0:0:0:0:0:ffff:4179:7f08
65.121.127.9 0:0:0:0:0:ffff:4179:7f09
65.121.127.10 0:0:0:0:0:ffff:4179:7f0a
65.121.127.11 0:0:0:0:0:ffff:4179:7f0b
65.121.127.12 0:0:0:0:0:ffff:4179:7f0c
65.121.127.13 0:0:0:0:0:ffff:4179:7f0d
65.121.127.14 0:0:0:0:0:ffff:4179:7f0e
65.121.127.15 0:0:0:0:0:ffff:4179:7f0f
65.121.127.16 0:0:0:0:0:ffff:4179:7f10
65.121.127.17 0:0:0:0:0:ffff:4179:7f11
65.121.127.18 0:0:0:0:0:ffff:4179:7f12
65.121.127.19 0:0:0:0:0:ffff:4179:7f13
65.121.127.20 0:0:0:0:0:ffff:4179:7f14
65.121.127.21 0:0:0:0:0:ffff:4179:7f15
65.121.127.22 0:0:0:0:0:ffff:4179:7f16
65.121.127.23 0:0:0:0:0:ffff:4179:7f17
65.121.127.24 0:0:0:0:0:ffff:4179:7f18
65.121.127.25 0:0:0:0:0:ffff:4179:7f19
65.121.127.26 0:0:0:0:0:ffff:4179:7f1a
65.121.127.27 0:0:0:0:0:ffff:4179:7f1b
65.121.127.28 0:0:0:0:0:ffff:4179:7f1c
65.121.127.29 0:0:0:0:0:ffff:4179:7f1d
65.121.127.30 0:0:0:0:0:ffff:4179:7f1e
65.121.127.31 0:0:0:0:0:ffff:4179:7f1f
65.121.127.32 0:0:0:0:0:ffff:4179:7f20
65.121.127.33 0:0:0:0:0:ffff:4179:7f21
65.121.127.34 0:0:0:0:0:ffff:4179:7f22
65.121.127.35 0:0:0:0:0:ffff:4179:7f23
65.121.127.36 0:0:0:0:0:ffff:4179:7f24
65.121.127.37 0:0:0:0:0:ffff:4179:7f25
65.121.127.38 0:0:0:0:0:ffff:4179:7f26
65.121.127.39 0:0:0:0:0:ffff:4179:7f27
65.121.127.40 0:0:0:0:0:ffff:4179:7f28
65.121.127.41 0:0:0:0:0:ffff:4179:7f29
65.121.127.42 0:0:0:0:0:ffff:4179:7f2a
65.121.127.43 0:0:0:0:0:ffff:4179:7f2b
65.121.127.44 0:0:0:0:0:ffff:4179:7f2c
65.121.127.45 0:0:0:0:0:ffff:4179:7f2d
65.121.127.46 0:0:0:0:0:ffff:4179:7f2e
65.121.127.47 0:0:0:0:0:ffff:4179:7f2f
65.121.127.48 0:0:0:0:0:ffff:4179:7f30
65.121.127.49 0:0:0:0:0:ffff:4179:7f31
65.121.127.50 0:0:0:0:0:ffff:4179:7f32
65.121.127.51 0:0:0:0:0:ffff:4179:7f33
65.121.127.52 0:0:0:0:0:ffff:4179:7f34
65.121.127.53 0:0:0:0:0:ffff:4179:7f35
65.121.127.54 0:0:0:0:0:ffff:4179:7f36
65.121.127.55 0:0:0:0:0:ffff:4179:7f37
65.121.127.56 0:0:0:0:0:ffff:4179:7f38
65.121.127.57 0:0:0:0:0:ffff:4179:7f39
65.121.127.58 0:0:0:0:0:ffff:4179:7f3a
65.121.127.59 0:0:0:0:0:ffff:4179:7f3b
65.121.127.60 0:0:0:0:0:ffff:4179:7f3c


65.121.127.61 0:0:0:0:0:ffff:4179:7f3d
65.121.127.62 0:0:0:0:0:ffff:4179:7f3e
65.121.127.63 0:0:0:0:0:ffff:4179:7f3f
65.121.127.64 0:0:0:0:0:ffff:4179:7f40
65.121.127.65 0:0:0:0:0:ffff:4179:7f41
65.121.127.66 0:0:0:0:0:ffff:4179:7f42
65.121.127.67 0:0:0:0:0:ffff:4179:7f43
65.121.127.68 0:0:0:0:0:ffff:4179:7f44
65.121.127.69 0:0:0:0:0:ffff:4179:7f45
65.121.127.70 0:0:0:0:0:ffff:4179:7f46
65.121.127.71 0:0:0:0:0:ffff:4179:7f47
65.121.127.72 0:0:0:0:0:ffff:4179:7f48
65.121.127.73 0:0:0:0:0:ffff:4179:7f49
65.121.127.74 0:0:0:0:0:ffff:4179:7f4a
65.121.127.75 0:0:0:0:0:ffff:4179:7f4b
65.121.127.76 0:0:0:0:0:ffff:4179:7f4c
65.121.127.77 0:0:0:0:0:ffff:4179:7f4d
65.121.127.78 0:0:0:0:0:ffff:4179:7f4e
65.121.127.79 0:0:0:0:0:ffff:4179:7f4f
65.121.127.80 0:0:0:0:0:ffff:4179:7f50
65.121.127.81 0:0:0:0:0:ffff:4179:7f51
65.121.127.82 0:0:0:0:0:ffff:4179:7f52
65.121.127.83 0:0:0:0:0:ffff:4179:7f53
65.121.127.84 0:0:0:0:0:ffff:4179:7f54
65.121.127.85 0:0:0:0:0:ffff:4179:7f55
65.121.127.86 0:0:0:0:0:ffff:4179:7f56
65.121.127.87 0:0:0:0:0:ffff:4179:7f57
65.121.127.88 0:0:0:0:0:ffff:4179:7f58
65.121.127.89 0:0:0:0:0:ffff:4179:7f59
65.121.127.90 0:0:0:0:0:ffff:4179:7f5a
65.121.127.91 0:0:0:0:0:ffff:4179:7f5b
65.121.127.92 0:0:0:0:0:ffff:4179:7f5c
65.121.127.93 0:0:0:0:0:ffff:4179:7f5d
65.121.127.94 0:0:0:0:0:ffff:4179:7f5e
65.121.127.95 0:0:0:0:0:ffff:4179:7f5f
65.121.127.96 0:0:0:0:0:ffff:4179:7f60
65.121.127.97 0:0:0:0:0:ffff:4179:7f61
65.121.127.98 0:0:0:0:0:ffff:4179:7f62
65.121.127.99 0:0:0:0:0:ffff:4179:7f63
65.121.127.100 0:0:0:0:0:ffff:4179:7f64
65.121.127.101 0:0:0:0:0:ffff:4179:7f65
65.121.127.102 0:0:0:0:0:ffff:4179:7f66
65.121.127.103 0:0:0:0:0:ffff:4179:7f67
65.121.127.104 0:0:0:0:0:ffff:4179:7f68
65.121.127.105 0:0:0:0:0:ffff:4179:7f69
65.121.127.106 0:0:0:0:0:ffff:4179:7f6a
65.121.127.107 0:0:0:0:0:ffff:4179:7f6b
65.121.127.108 0:0:0:0:0:ffff:4179:7f6c
65.121.127.109 0:0:0:0:0:ffff:4179:7f6d
65.121.127.110 0:0:0:0:0:ffff:4179:7f6e
65.121.127.111 0:0:0:0:0:ffff:4179:7f6f
65.121.127.112 0:0:0:0:0:ffff:4179:7f70
65.121.127.113 0:0:0:0:0:ffff:4179:7f71
65.121.127.114 0:0:0:0:0:ffff:4179:7f72
65.121.127.115 0:0:0:0:0:ffff:4179:7f73
65.121.127.116 0:0:0:0:0:ffff:4179:7f74
65.121.127.117 0:0:0:0:0:ffff:4179:7f75
65.121.127.118 0:0:0:0:0:ffff:4179:7f76
65.121.127.119 0:0:0:0:0:ffff:4179:7f77
65.121.127.120 0:0:0:0:0:ffff:4179:7f78


65.121.127.121 0:0:0:0:0:ffff:4179:7f79
65.121.127.122 0:0:0:0:0:ffff:4179:7f7a
65.121.127.123 0:0:0:0:0:ffff:4179:7f7b
65.121.127.124 0:0:0:0:0:ffff:4179:7f7c
65.121.127.125 0:0:0:0:0:ffff:4179:7f7d
65.121.127.126 0:0:0:0:0:ffff:4179:7f7e
65.121.127.127 0:0:0:0:0:ffff:4179:7f7f
65.121.127.128 0:0:0:0:0:ffff:4179:7f80
65.121.127.129 0:0:0:0:0:ffff:4179:7f81
65.121.127.130 0:0:0:0:0:ffff:4179:7f82
65.121.127.131 0:0:0:0:0:ffff:4179:7f83
65.121.127.132 0:0:0:0:0:ffff:4179:7f84
65.121.127.133 0:0:0:0:0:ffff:4179:7f85
65.121.127.134 0:0:0:0:0:ffff:4179:7f86
65.121.127.135 0:0:0:0:0:ffff:4179:7f87
65.121.127.136 0:0:0:0:0:ffff:4179:7f88
65.121.127.137 0:0:0:0:0:ffff:4179:7f89
65.121.127.138 0:0:0:0:0:ffff:4179:7f8a
65.121.127.139 0:0:0:0:0:ffff:4179:7f8b
65.121.127.140 0:0:0:0:0:ffff:4179:7f8c
65.121.127.141 0:0:0:0:0:ffff:4179:7f8d
65.121.127.142 0:0:0:0:0:ffff:4179:7f8e
65.121.127.143 0:0:0:0:0:ffff:4179:7f8f
65.121.127.144 0:0:0:0:0:ffff:4179:7f90
65.121.127.145 0:0:0:0:0:ffff:4179:7f91
65.121.127.146 0:0:0:0:0:ffff:4179:7f92
65.121.127.147 0:0:0:0:0:ffff:4179:7f93
65.121.127.148 0:0:0:0:0:ffff:4179:7f94
65.121.127.149 0:0:0:0:0:ffff:4179:7f95
65.121.127.150 0:0:0:0:0:ffff:4179:7f96
65.121.127.151 0:0:0:0:0:ffff:4179:7f97
65.121.127.152 0:0:0:0:0:ffff:4179:7f98
65.121.127.153 0:0:0:0:0:ffff:4179:7f99
65.121.127.154 0:0:0:0:0:ffff:4179:7f9a
65.121.127.155 0:0:0:0:0:ffff:4179:7f9b
65.121.127.156 0:0:0:0:0:ffff:4179:7f9c
65.121.127.157 0:0:0:0:0:ffff:4179:7f9d
65.121.127.158 0:0:0:0:0:ffff:4179:7f9e
65.121.127.159 0:0:0:0:0:ffff:4179:7f9f
65.121.127.160 0:0:0:0:0:ffff:4179:7fa0
65.121.127.161 0:0:0:0:0:ffff:4179:7fa1
65.121.127.162 0:0:0:0:0:ffff:4179:7fa2
65.121.127.163 0:0:0:0:0:ffff:4179:7fa3
65.121.127.164 0:0:0:0:0:ffff:4179:7fa4
65.121.127.165 0:0:0:0:0:ffff:4179:7fa5
65.121.127.166 0:0:0:0:0:ffff:4179:7fa6
65.121.127.167 0:0:0:0:0:ffff:4179:7fa7
65.121.127.168 0:0:0:0:0:ffff:4179:7fa8
65.121.127.169 0:0:0:0:0:ffff:4179:7fa9
65.121.127.170 0:0:0:0:0:ffff:4179:7faa
65.121.127.171 0:0:0:0:0:ffff:4179:7fab
65.121.127.172 0:0:0:0:0:ffff:4179:7fac
65.121.127.173 0:0:0:0:0:ffff:4179:7fad
65.121.127.174 0:0:0:0:0:ffff:4179:7fae
65.121.127.175 0:0:0:0:0:ffff:4179:7faf
65.121.127.176 0:0:0:0:0:ffff:4179:7fb0
65.121.127.177 0:0:0:0:0:ffff:4179:7fb1
65.121.127.178 0:0:0:0:0:ffff:4179:7fb2
65.121.127.179 0:0:0:0:0:ffff:4179:7fb3
65.121.127.180 0:0:0:0:0:ffff:4179:7fb4


65.121.127.181 0:0:0:0:0:ffff:4179:7fb5
65.121.127.182 0:0:0:0:0:ffff:4179:7fb6
65.121.127.183 0:0:0:0:0:ffff:4179:7fb7
65.121.127.184 0:0:0:0:0:ffff:4179:7fb8
65.121.127.185 0:0:0:0:0:ffff:4179:7fb9
65.121.127.186 0:0:0:0:0:ffff:4179:7fba
65.121.127.187 0:0:0:0:0:ffff:4179:7fbb
65.121.127.188 0:0:0:0:0:ffff:4179:7fbc
65.121.127.189 0:0:0:0:0:ffff:4179:7fbd
65.121.127.190 0:0:0:0:0:ffff:4179:7fbe
65.121.127.191 0:0:0:0:0:ffff:4179:7fbf
65.121.127.192 0:0:0:0:0:ffff:4179:7fc0
65.121.127.193 0:0:0:0:0:ffff:4179:7fc1
65.121.127.194 0:0:0:0:0:ffff:4179:7fc2
65.121.127.195 0:0:0:0:0:ffff:4179:7fc3
65.121.127.196 0:0:0:0:0:ffff:4179:7fc4
65.121.127.197 0:0:0:0:0:ffff:4179:7fc5
65.121.127.198 0:0:0:0:0:ffff:4179:7fc6
65.121.127.199 0:0:0:0:0:ffff:4179:7fc7
65.121.127.200 0:0:0:0:0:ffff:4179:7fc8
65.121.127.201 0:0:0:0:0:ffff:4179:7fc9
65.121.127.202 0:0:0:0:0:ffff:4179:7fca
65.121.127.203 0:0:0:0:0:ffff:4179:7fcb
65.121.127.204 0:0:0:0:0:ffff:4179:7fcc
65.121.127.205 0:0:0:0:0:ffff:4179:7fcd
65.121.127.206 0:0:0:0:0:ffff:4179:7fce
65.121.127.207 0:0:0:0:0:ffff:4179:7fcf
65.121.127.208 0:0:0:0:0:ffff:4179:7fd0
65.121.127.209 0:0:0:0:0:ffff:4179:7fd1
65.121.127.210 0:0:0:0:0:ffff:4179:7fd2
65.121.127.211 0:0:0:0:0:ffff:4179:7fd3
65.121.127.212 0:0:0:0:0:ffff:4179:7fd4
65.121.127.213 0:0:0:0:0:ffff:4179:7fd5
65.121.127.214 0:0:0:0:0:ffff:4179:7fd6
65.121.127.215 0:0:0:0:0:ffff:4179:7fd7
65.121.127.216 0:0:0:0:0:ffff:4179:7fd8
65.121.127.217 0:0:0:0:0:ffff:4179:7fd9
65.121.127.218 0:0:0:0:0:ffff:4179:7fda
65.121.127.219 0:0:0:0:0:ffff:4179:7fdb
65.121.127.220 0:0:0:0:0:ffff:4179:7fdc
65.121.127.221 0:0:0:0:0:ffff:4179:7fdd
65.121.127.222 0:0:0:0:0:ffff:4179:7fde
65.121.127.223 0:0:0:0:0:ffff:4179:7fdf
65.121.127.224 0:0:0:0:0:ffff:4179:7fe0
65.121.127.225 0:0:0:0:0:ffff:4179:7fe1
65.121.127.226 0:0:0:0:0:ffff:4179:7fe2
65.121.127.227 0:0:0:0:0:ffff:4179:7fe3
65.121.127.228 0:0:0:0:0:ffff:4179:7fe4
65.121.127.229 0:0:0:0:0:ffff:4179:7fe5
65.121.127.230 0:0:0:0:0:ffff:4179:7fe6
65.121.127.231 0:0:0:0:0:ffff:4179:7fe7
65.121.127.232 0:0:0:0:0:ffff:4179:7fe8
65.121.127.233 0:0:0:0:0:ffff:4179:7fe9
65.121.127.234 0:0:0:0:0:ffff:4179:7fea
65.121.127.235 0:0:0:0:0:ffff:4179:7feb
65.121.127.236 0:0:0:0:0:ffff:4179:7fec
65.121.127.237 0:0:0:0:0:ffff:4179:7fed
65.121.127.238 0:0:0:0:0:ffff:4179:7fee
65.121.127.239 0:0:0:0:0:ffff:4179:7fef
65.121.127.240 0:0:0:0:0:ffff:4179:7ff0
65.121.127.241 0:0:0:0:0:ffff:4179:7ff1
65.121.127.242 0:0:0:0:0:ffff:4179:7ff2
65.121.127.243 0:0:0:0:0:ffff:4179:7ff3
65.121.127.244 0:0:0:0:0:ffff:4179:7ff4
65.121.127.245 0:0:0:0:0:ffff:4179:7ff5
65.121.127.246 0:0:0:0:0:ffff:4179:7ff6
65.121.127.247 0:0:0:0:0:ffff:4179:7ff7
65.121.127.248 0:0:0:0:0:ffff:4179:7ff8
65.121.127.249 0:0:0:0:0:ffff:4179:7ff9
65.121.127.250 0:0:0:0:0:ffff:4179:7ffa
65.121.127.251 0:0:0:0:0:ffff:4179:7ffb
65.121.127.252 0:0:0:0:0:ffff:4179:7ffc
65.121.127.253 0:0:0:0:0:ffff:4179:7ffd
65.121.127.254 0:0:0:0:0:ffff:4179:7ffe
65.121.127.255 0:0:0:0:0:ffff:4179:7fff


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.