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
65.121.126.1 0:0:0:0:0:ffff:4179:7e01
65.121.126.2 0:0:0:0:0:ffff:4179:7e02
65.121.126.3 0:0:0:0:0:ffff:4179:7e03
65.121.126.4 0:0:0:0:0:ffff:4179:7e04
65.121.126.5 0:0:0:0:0:ffff:4179:7e05
65.121.126.6 0:0:0:0:0:ffff:4179:7e06
65.121.126.7 0:0:0:0:0:ffff:4179:7e07
65.121.126.8 0:0:0:0:0:ffff:4179:7e08
65.121.126.9 0:0:0:0:0:ffff:4179:7e09
65.121.126.10 0:0:0:0:0:ffff:4179:7e0a
65.121.126.11 0:0:0:0:0:ffff:4179:7e0b
65.121.126.12 0:0:0:0:0:ffff:4179:7e0c
65.121.126.13 0:0:0:0:0:ffff:4179:7e0d
65.121.126.14 0:0:0:0:0:ffff:4179:7e0e
65.121.126.15 0:0:0:0:0:ffff:4179:7e0f
65.121.126.16 0:0:0:0:0:ffff:4179:7e10
65.121.126.17 0:0:0:0:0:ffff:4179:7e11
65.121.126.18 0:0:0:0:0:ffff:4179:7e12
65.121.126.19 0:0:0:0:0:ffff:4179:7e13
65.121.126.20 0:0:0:0:0:ffff:4179:7e14
65.121.126.21 0:0:0:0:0:ffff:4179:7e15
65.121.126.22 0:0:0:0:0:ffff:4179:7e16
65.121.126.23 0:0:0:0:0:ffff:4179:7e17
65.121.126.24 0:0:0:0:0:ffff:4179:7e18
65.121.126.25 0:0:0:0:0:ffff:4179:7e19
65.121.126.26 0:0:0:0:0:ffff:4179:7e1a
65.121.126.27 0:0:0:0:0:ffff:4179:7e1b
65.121.126.28 0:0:0:0:0:ffff:4179:7e1c
65.121.126.29 0:0:0:0:0:ffff:4179:7e1d
65.121.126.30 0:0:0:0:0:ffff:4179:7e1e
65.121.126.31 0:0:0:0:0:ffff:4179:7e1f
65.121.126.32 0:0:0:0:0:ffff:4179:7e20
65.121.126.33 0:0:0:0:0:ffff:4179:7e21
65.121.126.34 0:0:0:0:0:ffff:4179:7e22
65.121.126.35 0:0:0:0:0:ffff:4179:7e23
65.121.126.36 0:0:0:0:0:ffff:4179:7e24
65.121.126.37 0:0:0:0:0:ffff:4179:7e25
65.121.126.38 0:0:0:0:0:ffff:4179:7e26
65.121.126.39 0:0:0:0:0:ffff:4179:7e27
65.121.126.40 0:0:0:0:0:ffff:4179:7e28
65.121.126.41 0:0:0:0:0:ffff:4179:7e29
65.121.126.42 0:0:0:0:0:ffff:4179:7e2a
65.121.126.43 0:0:0:0:0:ffff:4179:7e2b
65.121.126.44 0:0:0:0:0:ffff:4179:7e2c
65.121.126.45 0:0:0:0:0:ffff:4179:7e2d
65.121.126.46 0:0:0:0:0:ffff:4179:7e2e
65.121.126.47 0:0:0:0:0:ffff:4179:7e2f
65.121.126.48 0:0:0:0:0:ffff:4179:7e30
65.121.126.49 0:0:0:0:0:ffff:4179:7e31
65.121.126.50 0:0:0:0:0:ffff:4179:7e32
65.121.126.51 0:0:0:0:0:ffff:4179:7e33
65.121.126.52 0:0:0:0:0:ffff:4179:7e34
65.121.126.53 0:0:0:0:0:ffff:4179:7e35
65.121.126.54 0:0:0:0:0:ffff:4179:7e36
65.121.126.55 0:0:0:0:0:ffff:4179:7e37
65.121.126.56 0:0:0:0:0:ffff:4179:7e38
65.121.126.57 0:0:0:0:0:ffff:4179:7e39
65.121.126.58 0:0:0:0:0:ffff:4179:7e3a
65.121.126.59 0:0:0:0:0:ffff:4179:7e3b
65.121.126.60 0:0:0:0:0:ffff:4179:7e3c


65.121.126.61 0:0:0:0:0:ffff:4179:7e3d
65.121.126.62 0:0:0:0:0:ffff:4179:7e3e
65.121.126.63 0:0:0:0:0:ffff:4179:7e3f
65.121.126.64 0:0:0:0:0:ffff:4179:7e40
65.121.126.65 0:0:0:0:0:ffff:4179:7e41
65.121.126.66 0:0:0:0:0:ffff:4179:7e42
65.121.126.67 0:0:0:0:0:ffff:4179:7e43
65.121.126.68 0:0:0:0:0:ffff:4179:7e44
65.121.126.69 0:0:0:0:0:ffff:4179:7e45
65.121.126.70 0:0:0:0:0:ffff:4179:7e46
65.121.126.71 0:0:0:0:0:ffff:4179:7e47
65.121.126.72 0:0:0:0:0:ffff:4179:7e48
65.121.126.73 0:0:0:0:0:ffff:4179:7e49
65.121.126.74 0:0:0:0:0:ffff:4179:7e4a
65.121.126.75 0:0:0:0:0:ffff:4179:7e4b
65.121.126.76 0:0:0:0:0:ffff:4179:7e4c
65.121.126.77 0:0:0:0:0:ffff:4179:7e4d
65.121.126.78 0:0:0:0:0:ffff:4179:7e4e
65.121.126.79 0:0:0:0:0:ffff:4179:7e4f
65.121.126.80 0:0:0:0:0:ffff:4179:7e50
65.121.126.81 0:0:0:0:0:ffff:4179:7e51
65.121.126.82 0:0:0:0:0:ffff:4179:7e52
65.121.126.83 0:0:0:0:0:ffff:4179:7e53
65.121.126.84 0:0:0:0:0:ffff:4179:7e54
65.121.126.85 0:0:0:0:0:ffff:4179:7e55
65.121.126.86 0:0:0:0:0:ffff:4179:7e56
65.121.126.87 0:0:0:0:0:ffff:4179:7e57
65.121.126.88 0:0:0:0:0:ffff:4179:7e58
65.121.126.89 0:0:0:0:0:ffff:4179:7e59
65.121.126.90 0:0:0:0:0:ffff:4179:7e5a
65.121.126.91 0:0:0:0:0:ffff:4179:7e5b
65.121.126.92 0:0:0:0:0:ffff:4179:7e5c
65.121.126.93 0:0:0:0:0:ffff:4179:7e5d
65.121.126.94 0:0:0:0:0:ffff:4179:7e5e
65.121.126.95 0:0:0:0:0:ffff:4179:7e5f
65.121.126.96 0:0:0:0:0:ffff:4179:7e60
65.121.126.97 0:0:0:0:0:ffff:4179:7e61
65.121.126.98 0:0:0:0:0:ffff:4179:7e62
65.121.126.99 0:0:0:0:0:ffff:4179:7e63
65.121.126.100 0:0:0:0:0:ffff:4179:7e64
65.121.126.101 0:0:0:0:0:ffff:4179:7e65
65.121.126.102 0:0:0:0:0:ffff:4179:7e66
65.121.126.103 0:0:0:0:0:ffff:4179:7e67
65.121.126.104 0:0:0:0:0:ffff:4179:7e68
65.121.126.105 0:0:0:0:0:ffff:4179:7e69
65.121.126.106 0:0:0:0:0:ffff:4179:7e6a
65.121.126.107 0:0:0:0:0:ffff:4179:7e6b
65.121.126.108 0:0:0:0:0:ffff:4179:7e6c
65.121.126.109 0:0:0:0:0:ffff:4179:7e6d
65.121.126.110 0:0:0:0:0:ffff:4179:7e6e
65.121.126.111 0:0:0:0:0:ffff:4179:7e6f
65.121.126.112 0:0:0:0:0:ffff:4179:7e70
65.121.126.113 0:0:0:0:0:ffff:4179:7e71
65.121.126.114 0:0:0:0:0:ffff:4179:7e72
65.121.126.115 0:0:0:0:0:ffff:4179:7e73
65.121.126.116 0:0:0:0:0:ffff:4179:7e74
65.121.126.117 0:0:0:0:0:ffff:4179:7e75
65.121.126.118 0:0:0:0:0:ffff:4179:7e76
65.121.126.119 0:0:0:0:0:ffff:4179:7e77
65.121.126.120 0:0:0:0:0:ffff:4179:7e78


65.121.126.121 0:0:0:0:0:ffff:4179:7e79
65.121.126.122 0:0:0:0:0:ffff:4179:7e7a
65.121.126.123 0:0:0:0:0:ffff:4179:7e7b
65.121.126.124 0:0:0:0:0:ffff:4179:7e7c
65.121.126.125 0:0:0:0:0:ffff:4179:7e7d
65.121.126.126 0:0:0:0:0:ffff:4179:7e7e
65.121.126.127 0:0:0:0:0:ffff:4179:7e7f
65.121.126.128 0:0:0:0:0:ffff:4179:7e80
65.121.126.129 0:0:0:0:0:ffff:4179:7e81
65.121.126.130 0:0:0:0:0:ffff:4179:7e82
65.121.126.131 0:0:0:0:0:ffff:4179:7e83
65.121.126.132 0:0:0:0:0:ffff:4179:7e84
65.121.126.133 0:0:0:0:0:ffff:4179:7e85
65.121.126.134 0:0:0:0:0:ffff:4179:7e86
65.121.126.135 0:0:0:0:0:ffff:4179:7e87
65.121.126.136 0:0:0:0:0:ffff:4179:7e88
65.121.126.137 0:0:0:0:0:ffff:4179:7e89
65.121.126.138 0:0:0:0:0:ffff:4179:7e8a
65.121.126.139 0:0:0:0:0:ffff:4179:7e8b
65.121.126.140 0:0:0:0:0:ffff:4179:7e8c
65.121.126.141 0:0:0:0:0:ffff:4179:7e8d
65.121.126.142 0:0:0:0:0:ffff:4179:7e8e
65.121.126.143 0:0:0:0:0:ffff:4179:7e8f
65.121.126.144 0:0:0:0:0:ffff:4179:7e90
65.121.126.145 0:0:0:0:0:ffff:4179:7e91
65.121.126.146 0:0:0:0:0:ffff:4179:7e92
65.121.126.147 0:0:0:0:0:ffff:4179:7e93
65.121.126.148 0:0:0:0:0:ffff:4179:7e94
65.121.126.149 0:0:0:0:0:ffff:4179:7e95
65.121.126.150 0:0:0:0:0:ffff:4179:7e96
65.121.126.151 0:0:0:0:0:ffff:4179:7e97
65.121.126.152 0:0:0:0:0:ffff:4179:7e98
65.121.126.153 0:0:0:0:0:ffff:4179:7e99
65.121.126.154 0:0:0:0:0:ffff:4179:7e9a
65.121.126.155 0:0:0:0:0:ffff:4179:7e9b
65.121.126.156 0:0:0:0:0:ffff:4179:7e9c
65.121.126.157 0:0:0:0:0:ffff:4179:7e9d
65.121.126.158 0:0:0:0:0:ffff:4179:7e9e
65.121.126.159 0:0:0:0:0:ffff:4179:7e9f
65.121.126.160 0:0:0:0:0:ffff:4179:7ea0
65.121.126.161 0:0:0:0:0:ffff:4179:7ea1
65.121.126.162 0:0:0:0:0:ffff:4179:7ea2
65.121.126.163 0:0:0:0:0:ffff:4179:7ea3
65.121.126.164 0:0:0:0:0:ffff:4179:7ea4
65.121.126.165 0:0:0:0:0:ffff:4179:7ea5
65.121.126.166 0:0:0:0:0:ffff:4179:7ea6
65.121.126.167 0:0:0:0:0:ffff:4179:7ea7
65.121.126.168 0:0:0:0:0:ffff:4179:7ea8
65.121.126.169 0:0:0:0:0:ffff:4179:7ea9
65.121.126.170 0:0:0:0:0:ffff:4179:7eaa
65.121.126.171 0:0:0:0:0:ffff:4179:7eab
65.121.126.172 0:0:0:0:0:ffff:4179:7eac
65.121.126.173 0:0:0:0:0:ffff:4179:7ead
65.121.126.174 0:0:0:0:0:ffff:4179:7eae
65.121.126.175 0:0:0:0:0:ffff:4179:7eaf
65.121.126.176 0:0:0:0:0:ffff:4179:7eb0
65.121.126.177 0:0:0:0:0:ffff:4179:7eb1
65.121.126.178 0:0:0:0:0:ffff:4179:7eb2
65.121.126.179 0:0:0:0:0:ffff:4179:7eb3
65.121.126.180 0:0:0:0:0:ffff:4179:7eb4


65.121.126.181 0:0:0:0:0:ffff:4179:7eb5
65.121.126.182 0:0:0:0:0:ffff:4179:7eb6
65.121.126.183 0:0:0:0:0:ffff:4179:7eb7
65.121.126.184 0:0:0:0:0:ffff:4179:7eb8
65.121.126.185 0:0:0:0:0:ffff:4179:7eb9
65.121.126.186 0:0:0:0:0:ffff:4179:7eba
65.121.126.187 0:0:0:0:0:ffff:4179:7ebb
65.121.126.188 0:0:0:0:0:ffff:4179:7ebc
65.121.126.189 0:0:0:0:0:ffff:4179:7ebd
65.121.126.190 0:0:0:0:0:ffff:4179:7ebe
65.121.126.191 0:0:0:0:0:ffff:4179:7ebf
65.121.126.192 0:0:0:0:0:ffff:4179:7ec0
65.121.126.193 0:0:0:0:0:ffff:4179:7ec1
65.121.126.194 0:0:0:0:0:ffff:4179:7ec2
65.121.126.195 0:0:0:0:0:ffff:4179:7ec3
65.121.126.196 0:0:0:0:0:ffff:4179:7ec4
65.121.126.197 0:0:0:0:0:ffff:4179:7ec5
65.121.126.198 0:0:0:0:0:ffff:4179:7ec6
65.121.126.199 0:0:0:0:0:ffff:4179:7ec7
65.121.126.200 0:0:0:0:0:ffff:4179:7ec8
65.121.126.201 0:0:0:0:0:ffff:4179:7ec9
65.121.126.202 0:0:0:0:0:ffff:4179:7eca
65.121.126.203 0:0:0:0:0:ffff:4179:7ecb
65.121.126.204 0:0:0:0:0:ffff:4179:7ecc
65.121.126.205 0:0:0:0:0:ffff:4179:7ecd
65.121.126.206 0:0:0:0:0:ffff:4179:7ece
65.121.126.207 0:0:0:0:0:ffff:4179:7ecf
65.121.126.208 0:0:0:0:0:ffff:4179:7ed0
65.121.126.209 0:0:0:0:0:ffff:4179:7ed1
65.121.126.210 0:0:0:0:0:ffff:4179:7ed2
65.121.126.211 0:0:0:0:0:ffff:4179:7ed3
65.121.126.212 0:0:0:0:0:ffff:4179:7ed4
65.121.126.213 0:0:0:0:0:ffff:4179:7ed5
65.121.126.214 0:0:0:0:0:ffff:4179:7ed6
65.121.126.215 0:0:0:0:0:ffff:4179:7ed7
65.121.126.216 0:0:0:0:0:ffff:4179:7ed8
65.121.126.217 0:0:0:0:0:ffff:4179:7ed9
65.121.126.218 0:0:0:0:0:ffff:4179:7eda
65.121.126.219 0:0:0:0:0:ffff:4179:7edb
65.121.126.220 0:0:0:0:0:ffff:4179:7edc
65.121.126.221 0:0:0:0:0:ffff:4179:7edd
65.121.126.222 0:0:0:0:0:ffff:4179:7ede
65.121.126.223 0:0:0:0:0:ffff:4179:7edf
65.121.126.224 0:0:0:0:0:ffff:4179:7ee0
65.121.126.225 0:0:0:0:0:ffff:4179:7ee1
65.121.126.226 0:0:0:0:0:ffff:4179:7ee2
65.121.126.227 0:0:0:0:0:ffff:4179:7ee3
65.121.126.228 0:0:0:0:0:ffff:4179:7ee4
65.121.126.229 0:0:0:0:0:ffff:4179:7ee5
65.121.126.230 0:0:0:0:0:ffff:4179:7ee6
65.121.126.231 0:0:0:0:0:ffff:4179:7ee7
65.121.126.232 0:0:0:0:0:ffff:4179:7ee8
65.121.126.233 0:0:0:0:0:ffff:4179:7ee9
65.121.126.234 0:0:0:0:0:ffff:4179:7eea
65.121.126.235 0:0:0:0:0:ffff:4179:7eeb
65.121.126.236 0:0:0:0:0:ffff:4179:7eec
65.121.126.237 0:0:0:0:0:ffff:4179:7eed
65.121.126.238 0:0:0:0:0:ffff:4179:7eee
65.121.126.239 0:0:0:0:0:ffff:4179:7eef
65.121.126.240 0:0:0:0:0:ffff:4179:7ef0
65.121.126.241 0:0:0:0:0:ffff:4179:7ef1
65.121.126.242 0:0:0:0:0:ffff:4179:7ef2
65.121.126.243 0:0:0:0:0:ffff:4179:7ef3
65.121.126.244 0:0:0:0:0:ffff:4179:7ef4
65.121.126.245 0:0:0:0:0:ffff:4179:7ef5
65.121.126.246 0:0:0:0:0:ffff:4179:7ef6
65.121.126.247 0:0:0:0:0:ffff:4179:7ef7
65.121.126.248 0:0:0:0:0:ffff:4179:7ef8
65.121.126.249 0:0:0:0:0:ffff:4179:7ef9
65.121.126.250 0:0:0:0:0:ffff:4179:7efa
65.121.126.251 0:0:0:0:0:ffff:4179:7efb
65.121.126.252 0:0:0:0:0:ffff:4179:7efc
65.121.126.253 0:0:0:0:0:ffff:4179:7efd
65.121.126.254 0:0:0:0:0:ffff:4179:7efe
65.121.126.255 0:0:0:0:0:ffff:4179:7eff


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.