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
65.121.155.1 0:0:0:0:0:ffff:4179:9b01
65.121.155.2 0:0:0:0:0:ffff:4179:9b02
65.121.155.3 0:0:0:0:0:ffff:4179:9b03
65.121.155.4 0:0:0:0:0:ffff:4179:9b04
65.121.155.5 0:0:0:0:0:ffff:4179:9b05
65.121.155.6 0:0:0:0:0:ffff:4179:9b06
65.121.155.7 0:0:0:0:0:ffff:4179:9b07
65.121.155.8 0:0:0:0:0:ffff:4179:9b08
65.121.155.9 0:0:0:0:0:ffff:4179:9b09
65.121.155.10 0:0:0:0:0:ffff:4179:9b0a
65.121.155.11 0:0:0:0:0:ffff:4179:9b0b
65.121.155.12 0:0:0:0:0:ffff:4179:9b0c
65.121.155.13 0:0:0:0:0:ffff:4179:9b0d
65.121.155.14 0:0:0:0:0:ffff:4179:9b0e
65.121.155.15 0:0:0:0:0:ffff:4179:9b0f
65.121.155.16 0:0:0:0:0:ffff:4179:9b10
65.121.155.17 0:0:0:0:0:ffff:4179:9b11
65.121.155.18 0:0:0:0:0:ffff:4179:9b12
65.121.155.19 0:0:0:0:0:ffff:4179:9b13
65.121.155.20 0:0:0:0:0:ffff:4179:9b14
65.121.155.21 0:0:0:0:0:ffff:4179:9b15
65.121.155.22 0:0:0:0:0:ffff:4179:9b16
65.121.155.23 0:0:0:0:0:ffff:4179:9b17
65.121.155.24 0:0:0:0:0:ffff:4179:9b18
65.121.155.25 0:0:0:0:0:ffff:4179:9b19
65.121.155.26 0:0:0:0:0:ffff:4179:9b1a
65.121.155.27 0:0:0:0:0:ffff:4179:9b1b
65.121.155.28 0:0:0:0:0:ffff:4179:9b1c
65.121.155.29 0:0:0:0:0:ffff:4179:9b1d
65.121.155.30 0:0:0:0:0:ffff:4179:9b1e
65.121.155.31 0:0:0:0:0:ffff:4179:9b1f
65.121.155.32 0:0:0:0:0:ffff:4179:9b20
65.121.155.33 0:0:0:0:0:ffff:4179:9b21
65.121.155.34 0:0:0:0:0:ffff:4179:9b22
65.121.155.35 0:0:0:0:0:ffff:4179:9b23
65.121.155.36 0:0:0:0:0:ffff:4179:9b24
65.121.155.37 0:0:0:0:0:ffff:4179:9b25
65.121.155.38 0:0:0:0:0:ffff:4179:9b26
65.121.155.39 0:0:0:0:0:ffff:4179:9b27
65.121.155.40 0:0:0:0:0:ffff:4179:9b28
65.121.155.41 0:0:0:0:0:ffff:4179:9b29
65.121.155.42 0:0:0:0:0:ffff:4179:9b2a
65.121.155.43 0:0:0:0:0:ffff:4179:9b2b
65.121.155.44 0:0:0:0:0:ffff:4179:9b2c
65.121.155.45 0:0:0:0:0:ffff:4179:9b2d
65.121.155.46 0:0:0:0:0:ffff:4179:9b2e
65.121.155.47 0:0:0:0:0:ffff:4179:9b2f
65.121.155.48 0:0:0:0:0:ffff:4179:9b30
65.121.155.49 0:0:0:0:0:ffff:4179:9b31
65.121.155.50 0:0:0:0:0:ffff:4179:9b32
65.121.155.51 0:0:0:0:0:ffff:4179:9b33
65.121.155.52 0:0:0:0:0:ffff:4179:9b34
65.121.155.53 0:0:0:0:0:ffff:4179:9b35
65.121.155.54 0:0:0:0:0:ffff:4179:9b36
65.121.155.55 0:0:0:0:0:ffff:4179:9b37
65.121.155.56 0:0:0:0:0:ffff:4179:9b38
65.121.155.57 0:0:0:0:0:ffff:4179:9b39
65.121.155.58 0:0:0:0:0:ffff:4179:9b3a
65.121.155.59 0:0:0:0:0:ffff:4179:9b3b
65.121.155.60 0:0:0:0:0:ffff:4179:9b3c


65.121.155.61 0:0:0:0:0:ffff:4179:9b3d
65.121.155.62 0:0:0:0:0:ffff:4179:9b3e
65.121.155.63 0:0:0:0:0:ffff:4179:9b3f
65.121.155.64 0:0:0:0:0:ffff:4179:9b40
65.121.155.65 0:0:0:0:0:ffff:4179:9b41
65.121.155.66 0:0:0:0:0:ffff:4179:9b42
65.121.155.67 0:0:0:0:0:ffff:4179:9b43
65.121.155.68 0:0:0:0:0:ffff:4179:9b44
65.121.155.69 0:0:0:0:0:ffff:4179:9b45
65.121.155.70 0:0:0:0:0:ffff:4179:9b46
65.121.155.71 0:0:0:0:0:ffff:4179:9b47
65.121.155.72 0:0:0:0:0:ffff:4179:9b48
65.121.155.73 0:0:0:0:0:ffff:4179:9b49
65.121.155.74 0:0:0:0:0:ffff:4179:9b4a
65.121.155.75 0:0:0:0:0:ffff:4179:9b4b
65.121.155.76 0:0:0:0:0:ffff:4179:9b4c
65.121.155.77 0:0:0:0:0:ffff:4179:9b4d
65.121.155.78 0:0:0:0:0:ffff:4179:9b4e
65.121.155.79 0:0:0:0:0:ffff:4179:9b4f
65.121.155.80 0:0:0:0:0:ffff:4179:9b50
65.121.155.81 0:0:0:0:0:ffff:4179:9b51
65.121.155.82 0:0:0:0:0:ffff:4179:9b52
65.121.155.83 0:0:0:0:0:ffff:4179:9b53
65.121.155.84 0:0:0:0:0:ffff:4179:9b54
65.121.155.85 0:0:0:0:0:ffff:4179:9b55
65.121.155.86 0:0:0:0:0:ffff:4179:9b56
65.121.155.87 0:0:0:0:0:ffff:4179:9b57
65.121.155.88 0:0:0:0:0:ffff:4179:9b58
65.121.155.89 0:0:0:0:0:ffff:4179:9b59
65.121.155.90 0:0:0:0:0:ffff:4179:9b5a
65.121.155.91 0:0:0:0:0:ffff:4179:9b5b
65.121.155.92 0:0:0:0:0:ffff:4179:9b5c
65.121.155.93 0:0:0:0:0:ffff:4179:9b5d
65.121.155.94 0:0:0:0:0:ffff:4179:9b5e
65.121.155.95 0:0:0:0:0:ffff:4179:9b5f
65.121.155.96 0:0:0:0:0:ffff:4179:9b60
65.121.155.97 0:0:0:0:0:ffff:4179:9b61
65.121.155.98 0:0:0:0:0:ffff:4179:9b62
65.121.155.99 0:0:0:0:0:ffff:4179:9b63
65.121.155.100 0:0:0:0:0:ffff:4179:9b64
65.121.155.101 0:0:0:0:0:ffff:4179:9b65
65.121.155.102 0:0:0:0:0:ffff:4179:9b66
65.121.155.103 0:0:0:0:0:ffff:4179:9b67
65.121.155.104 0:0:0:0:0:ffff:4179:9b68
65.121.155.105 0:0:0:0:0:ffff:4179:9b69
65.121.155.106 0:0:0:0:0:ffff:4179:9b6a
65.121.155.107 0:0:0:0:0:ffff:4179:9b6b
65.121.155.108 0:0:0:0:0:ffff:4179:9b6c
65.121.155.109 0:0:0:0:0:ffff:4179:9b6d
65.121.155.110 0:0:0:0:0:ffff:4179:9b6e
65.121.155.111 0:0:0:0:0:ffff:4179:9b6f
65.121.155.112 0:0:0:0:0:ffff:4179:9b70
65.121.155.113 0:0:0:0:0:ffff:4179:9b71
65.121.155.114 0:0:0:0:0:ffff:4179:9b72
65.121.155.115 0:0:0:0:0:ffff:4179:9b73
65.121.155.116 0:0:0:0:0:ffff:4179:9b74
65.121.155.117 0:0:0:0:0:ffff:4179:9b75
65.121.155.118 0:0:0:0:0:ffff:4179:9b76
65.121.155.119 0:0:0:0:0:ffff:4179:9b77
65.121.155.120 0:0:0:0:0:ffff:4179:9b78


65.121.155.121 0:0:0:0:0:ffff:4179:9b79
65.121.155.122 0:0:0:0:0:ffff:4179:9b7a
65.121.155.123 0:0:0:0:0:ffff:4179:9b7b
65.121.155.124 0:0:0:0:0:ffff:4179:9b7c
65.121.155.125 0:0:0:0:0:ffff:4179:9b7d
65.121.155.126 0:0:0:0:0:ffff:4179:9b7e
65.121.155.127 0:0:0:0:0:ffff:4179:9b7f
65.121.155.128 0:0:0:0:0:ffff:4179:9b80
65.121.155.129 0:0:0:0:0:ffff:4179:9b81
65.121.155.130 0:0:0:0:0:ffff:4179:9b82
65.121.155.131 0:0:0:0:0:ffff:4179:9b83
65.121.155.132 0:0:0:0:0:ffff:4179:9b84
65.121.155.133 0:0:0:0:0:ffff:4179:9b85
65.121.155.134 0:0:0:0:0:ffff:4179:9b86
65.121.155.135 0:0:0:0:0:ffff:4179:9b87
65.121.155.136 0:0:0:0:0:ffff:4179:9b88
65.121.155.137 0:0:0:0:0:ffff:4179:9b89
65.121.155.138 0:0:0:0:0:ffff:4179:9b8a
65.121.155.139 0:0:0:0:0:ffff:4179:9b8b
65.121.155.140 0:0:0:0:0:ffff:4179:9b8c
65.121.155.141 0:0:0:0:0:ffff:4179:9b8d
65.121.155.142 0:0:0:0:0:ffff:4179:9b8e
65.121.155.143 0:0:0:0:0:ffff:4179:9b8f
65.121.155.144 0:0:0:0:0:ffff:4179:9b90
65.121.155.145 0:0:0:0:0:ffff:4179:9b91
65.121.155.146 0:0:0:0:0:ffff:4179:9b92
65.121.155.147 0:0:0:0:0:ffff:4179:9b93
65.121.155.148 0:0:0:0:0:ffff:4179:9b94
65.121.155.149 0:0:0:0:0:ffff:4179:9b95
65.121.155.150 0:0:0:0:0:ffff:4179:9b96
65.121.155.151 0:0:0:0:0:ffff:4179:9b97
65.121.155.152 0:0:0:0:0:ffff:4179:9b98
65.121.155.153 0:0:0:0:0:ffff:4179:9b99
65.121.155.154 0:0:0:0:0:ffff:4179:9b9a
65.121.155.155 0:0:0:0:0:ffff:4179:9b9b
65.121.155.156 0:0:0:0:0:ffff:4179:9b9c
65.121.155.157 0:0:0:0:0:ffff:4179:9b9d
65.121.155.158 0:0:0:0:0:ffff:4179:9b9e
65.121.155.159 0:0:0:0:0:ffff:4179:9b9f
65.121.155.160 0:0:0:0:0:ffff:4179:9ba0
65.121.155.161 0:0:0:0:0:ffff:4179:9ba1
65.121.155.162 0:0:0:0:0:ffff:4179:9ba2
65.121.155.163 0:0:0:0:0:ffff:4179:9ba3
65.121.155.164 0:0:0:0:0:ffff:4179:9ba4
65.121.155.165 0:0:0:0:0:ffff:4179:9ba5
65.121.155.166 0:0:0:0:0:ffff:4179:9ba6
65.121.155.167 0:0:0:0:0:ffff:4179:9ba7
65.121.155.168 0:0:0:0:0:ffff:4179:9ba8
65.121.155.169 0:0:0:0:0:ffff:4179:9ba9
65.121.155.170 0:0:0:0:0:ffff:4179:9baa
65.121.155.171 0:0:0:0:0:ffff:4179:9bab
65.121.155.172 0:0:0:0:0:ffff:4179:9bac
65.121.155.173 0:0:0:0:0:ffff:4179:9bad
65.121.155.174 0:0:0:0:0:ffff:4179:9bae
65.121.155.175 0:0:0:0:0:ffff:4179:9baf
65.121.155.176 0:0:0:0:0:ffff:4179:9bb0
65.121.155.177 0:0:0:0:0:ffff:4179:9bb1
65.121.155.178 0:0:0:0:0:ffff:4179:9bb2
65.121.155.179 0:0:0:0:0:ffff:4179:9bb3
65.121.155.180 0:0:0:0:0:ffff:4179:9bb4


65.121.155.181 0:0:0:0:0:ffff:4179:9bb5
65.121.155.182 0:0:0:0:0:ffff:4179:9bb6
65.121.155.183 0:0:0:0:0:ffff:4179:9bb7
65.121.155.184 0:0:0:0:0:ffff:4179:9bb8
65.121.155.185 0:0:0:0:0:ffff:4179:9bb9
65.121.155.186 0:0:0:0:0:ffff:4179:9bba
65.121.155.187 0:0:0:0:0:ffff:4179:9bbb
65.121.155.188 0:0:0:0:0:ffff:4179:9bbc
65.121.155.189 0:0:0:0:0:ffff:4179:9bbd
65.121.155.190 0:0:0:0:0:ffff:4179:9bbe
65.121.155.191 0:0:0:0:0:ffff:4179:9bbf
65.121.155.192 0:0:0:0:0:ffff:4179:9bc0
65.121.155.193 0:0:0:0:0:ffff:4179:9bc1
65.121.155.194 0:0:0:0:0:ffff:4179:9bc2
65.121.155.195 0:0:0:0:0:ffff:4179:9bc3
65.121.155.196 0:0:0:0:0:ffff:4179:9bc4
65.121.155.197 0:0:0:0:0:ffff:4179:9bc5
65.121.155.198 0:0:0:0:0:ffff:4179:9bc6
65.121.155.199 0:0:0:0:0:ffff:4179:9bc7
65.121.155.200 0:0:0:0:0:ffff:4179:9bc8
65.121.155.201 0:0:0:0:0:ffff:4179:9bc9
65.121.155.202 0:0:0:0:0:ffff:4179:9bca
65.121.155.203 0:0:0:0:0:ffff:4179:9bcb
65.121.155.204 0:0:0:0:0:ffff:4179:9bcc
65.121.155.205 0:0:0:0:0:ffff:4179:9bcd
65.121.155.206 0:0:0:0:0:ffff:4179:9bce
65.121.155.207 0:0:0:0:0:ffff:4179:9bcf
65.121.155.208 0:0:0:0:0:ffff:4179:9bd0
65.121.155.209 0:0:0:0:0:ffff:4179:9bd1
65.121.155.210 0:0:0:0:0:ffff:4179:9bd2
65.121.155.211 0:0:0:0:0:ffff:4179:9bd3
65.121.155.212 0:0:0:0:0:ffff:4179:9bd4
65.121.155.213 0:0:0:0:0:ffff:4179:9bd5
65.121.155.214 0:0:0:0:0:ffff:4179:9bd6
65.121.155.215 0:0:0:0:0:ffff:4179:9bd7
65.121.155.216 0:0:0:0:0:ffff:4179:9bd8
65.121.155.217 0:0:0:0:0:ffff:4179:9bd9
65.121.155.218 0:0:0:0:0:ffff:4179:9bda
65.121.155.219 0:0:0:0:0:ffff:4179:9bdb
65.121.155.220 0:0:0:0:0:ffff:4179:9bdc
65.121.155.221 0:0:0:0:0:ffff:4179:9bdd
65.121.155.222 0:0:0:0:0:ffff:4179:9bde
65.121.155.223 0:0:0:0:0:ffff:4179:9bdf
65.121.155.224 0:0:0:0:0:ffff:4179:9be0
65.121.155.225 0:0:0:0:0:ffff:4179:9be1
65.121.155.226 0:0:0:0:0:ffff:4179:9be2
65.121.155.227 0:0:0:0:0:ffff:4179:9be3
65.121.155.228 0:0:0:0:0:ffff:4179:9be4
65.121.155.229 0:0:0:0:0:ffff:4179:9be5
65.121.155.230 0:0:0:0:0:ffff:4179:9be6
65.121.155.231 0:0:0:0:0:ffff:4179:9be7
65.121.155.232 0:0:0:0:0:ffff:4179:9be8
65.121.155.233 0:0:0:0:0:ffff:4179:9be9
65.121.155.234 0:0:0:0:0:ffff:4179:9bea
65.121.155.235 0:0:0:0:0:ffff:4179:9beb
65.121.155.236 0:0:0:0:0:ffff:4179:9bec
65.121.155.237 0:0:0:0:0:ffff:4179:9bed
65.121.155.238 0:0:0:0:0:ffff:4179:9bee
65.121.155.239 0:0:0:0:0:ffff:4179:9bef
65.121.155.240 0:0:0:0:0:ffff:4179:9bf0
65.121.155.241 0:0:0:0:0:ffff:4179:9bf1
65.121.155.242 0:0:0:0:0:ffff:4179:9bf2
65.121.155.243 0:0:0:0:0:ffff:4179:9bf3
65.121.155.244 0:0:0:0:0:ffff:4179:9bf4
65.121.155.245 0:0:0:0:0:ffff:4179:9bf5
65.121.155.246 0:0:0:0:0:ffff:4179:9bf6
65.121.155.247 0:0:0:0:0:ffff:4179:9bf7
65.121.155.248 0:0:0:0:0:ffff:4179:9bf8
65.121.155.249 0:0:0:0:0:ffff:4179:9bf9
65.121.155.250 0:0:0:0:0:ffff:4179:9bfa
65.121.155.251 0:0:0:0:0:ffff:4179:9bfb
65.121.155.252 0:0:0:0:0:ffff:4179:9bfc
65.121.155.253 0:0:0:0:0:ffff:4179:9bfd
65.121.155.254 0:0:0:0:0:ffff:4179:9bfe
65.121.155.255 0:0:0:0:0:ffff:4179:9bff


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.