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
65.121.237.1 0:0:0:0:0:ffff:4179:ed01
65.121.237.2 0:0:0:0:0:ffff:4179:ed02
65.121.237.3 0:0:0:0:0:ffff:4179:ed03
65.121.237.4 0:0:0:0:0:ffff:4179:ed04
65.121.237.5 0:0:0:0:0:ffff:4179:ed05
65.121.237.6 0:0:0:0:0:ffff:4179:ed06
65.121.237.7 0:0:0:0:0:ffff:4179:ed07
65.121.237.8 0:0:0:0:0:ffff:4179:ed08
65.121.237.9 0:0:0:0:0:ffff:4179:ed09
65.121.237.10 0:0:0:0:0:ffff:4179:ed0a
65.121.237.11 0:0:0:0:0:ffff:4179:ed0b
65.121.237.12 0:0:0:0:0:ffff:4179:ed0c
65.121.237.13 0:0:0:0:0:ffff:4179:ed0d
65.121.237.14 0:0:0:0:0:ffff:4179:ed0e
65.121.237.15 0:0:0:0:0:ffff:4179:ed0f
65.121.237.16 0:0:0:0:0:ffff:4179:ed10
65.121.237.17 0:0:0:0:0:ffff:4179:ed11
65.121.237.18 0:0:0:0:0:ffff:4179:ed12
65.121.237.19 0:0:0:0:0:ffff:4179:ed13
65.121.237.20 0:0:0:0:0:ffff:4179:ed14
65.121.237.21 0:0:0:0:0:ffff:4179:ed15
65.121.237.22 0:0:0:0:0:ffff:4179:ed16
65.121.237.23 0:0:0:0:0:ffff:4179:ed17
65.121.237.24 0:0:0:0:0:ffff:4179:ed18
65.121.237.25 0:0:0:0:0:ffff:4179:ed19
65.121.237.26 0:0:0:0:0:ffff:4179:ed1a
65.121.237.27 0:0:0:0:0:ffff:4179:ed1b
65.121.237.28 0:0:0:0:0:ffff:4179:ed1c
65.121.237.29 0:0:0:0:0:ffff:4179:ed1d
65.121.237.30 0:0:0:0:0:ffff:4179:ed1e
65.121.237.31 0:0:0:0:0:ffff:4179:ed1f
65.121.237.32 0:0:0:0:0:ffff:4179:ed20
65.121.237.33 0:0:0:0:0:ffff:4179:ed21
65.121.237.34 0:0:0:0:0:ffff:4179:ed22
65.121.237.35 0:0:0:0:0:ffff:4179:ed23
65.121.237.36 0:0:0:0:0:ffff:4179:ed24
65.121.237.37 0:0:0:0:0:ffff:4179:ed25
65.121.237.38 0:0:0:0:0:ffff:4179:ed26
65.121.237.39 0:0:0:0:0:ffff:4179:ed27
65.121.237.40 0:0:0:0:0:ffff:4179:ed28
65.121.237.41 0:0:0:0:0:ffff:4179:ed29
65.121.237.42 0:0:0:0:0:ffff:4179:ed2a
65.121.237.43 0:0:0:0:0:ffff:4179:ed2b
65.121.237.44 0:0:0:0:0:ffff:4179:ed2c
65.121.237.45 0:0:0:0:0:ffff:4179:ed2d
65.121.237.46 0:0:0:0:0:ffff:4179:ed2e
65.121.237.47 0:0:0:0:0:ffff:4179:ed2f
65.121.237.48 0:0:0:0:0:ffff:4179:ed30
65.121.237.49 0:0:0:0:0:ffff:4179:ed31
65.121.237.50 0:0:0:0:0:ffff:4179:ed32
65.121.237.51 0:0:0:0:0:ffff:4179:ed33
65.121.237.52 0:0:0:0:0:ffff:4179:ed34
65.121.237.53 0:0:0:0:0:ffff:4179:ed35
65.121.237.54 0:0:0:0:0:ffff:4179:ed36
65.121.237.55 0:0:0:0:0:ffff:4179:ed37
65.121.237.56 0:0:0:0:0:ffff:4179:ed38
65.121.237.57 0:0:0:0:0:ffff:4179:ed39
65.121.237.58 0:0:0:0:0:ffff:4179:ed3a
65.121.237.59 0:0:0:0:0:ffff:4179:ed3b
65.121.237.60 0:0:0:0:0:ffff:4179:ed3c


65.121.237.61 0:0:0:0:0:ffff:4179:ed3d
65.121.237.62 0:0:0:0:0:ffff:4179:ed3e
65.121.237.63 0:0:0:0:0:ffff:4179:ed3f
65.121.237.64 0:0:0:0:0:ffff:4179:ed40
65.121.237.65 0:0:0:0:0:ffff:4179:ed41
65.121.237.66 0:0:0:0:0:ffff:4179:ed42
65.121.237.67 0:0:0:0:0:ffff:4179:ed43
65.121.237.68 0:0:0:0:0:ffff:4179:ed44
65.121.237.69 0:0:0:0:0:ffff:4179:ed45
65.121.237.70 0:0:0:0:0:ffff:4179:ed46
65.121.237.71 0:0:0:0:0:ffff:4179:ed47
65.121.237.72 0:0:0:0:0:ffff:4179:ed48
65.121.237.73 0:0:0:0:0:ffff:4179:ed49
65.121.237.74 0:0:0:0:0:ffff:4179:ed4a
65.121.237.75 0:0:0:0:0:ffff:4179:ed4b
65.121.237.76 0:0:0:0:0:ffff:4179:ed4c
65.121.237.77 0:0:0:0:0:ffff:4179:ed4d
65.121.237.78 0:0:0:0:0:ffff:4179:ed4e
65.121.237.79 0:0:0:0:0:ffff:4179:ed4f
65.121.237.80 0:0:0:0:0:ffff:4179:ed50
65.121.237.81 0:0:0:0:0:ffff:4179:ed51
65.121.237.82 0:0:0:0:0:ffff:4179:ed52
65.121.237.83 0:0:0:0:0:ffff:4179:ed53
65.121.237.84 0:0:0:0:0:ffff:4179:ed54
65.121.237.85 0:0:0:0:0:ffff:4179:ed55
65.121.237.86 0:0:0:0:0:ffff:4179:ed56
65.121.237.87 0:0:0:0:0:ffff:4179:ed57
65.121.237.88 0:0:0:0:0:ffff:4179:ed58
65.121.237.89 0:0:0:0:0:ffff:4179:ed59
65.121.237.90 0:0:0:0:0:ffff:4179:ed5a
65.121.237.91 0:0:0:0:0:ffff:4179:ed5b
65.121.237.92 0:0:0:0:0:ffff:4179:ed5c
65.121.237.93 0:0:0:0:0:ffff:4179:ed5d
65.121.237.94 0:0:0:0:0:ffff:4179:ed5e
65.121.237.95 0:0:0:0:0:ffff:4179:ed5f
65.121.237.96 0:0:0:0:0:ffff:4179:ed60
65.121.237.97 0:0:0:0:0:ffff:4179:ed61
65.121.237.98 0:0:0:0:0:ffff:4179:ed62
65.121.237.99 0:0:0:0:0:ffff:4179:ed63
65.121.237.100 0:0:0:0:0:ffff:4179:ed64
65.121.237.101 0:0:0:0:0:ffff:4179:ed65
65.121.237.102 0:0:0:0:0:ffff:4179:ed66
65.121.237.103 0:0:0:0:0:ffff:4179:ed67
65.121.237.104 0:0:0:0:0:ffff:4179:ed68
65.121.237.105 0:0:0:0:0:ffff:4179:ed69
65.121.237.106 0:0:0:0:0:ffff:4179:ed6a
65.121.237.107 0:0:0:0:0:ffff:4179:ed6b
65.121.237.108 0:0:0:0:0:ffff:4179:ed6c
65.121.237.109 0:0:0:0:0:ffff:4179:ed6d
65.121.237.110 0:0:0:0:0:ffff:4179:ed6e
65.121.237.111 0:0:0:0:0:ffff:4179:ed6f
65.121.237.112 0:0:0:0:0:ffff:4179:ed70
65.121.237.113 0:0:0:0:0:ffff:4179:ed71
65.121.237.114 0:0:0:0:0:ffff:4179:ed72
65.121.237.115 0:0:0:0:0:ffff:4179:ed73
65.121.237.116 0:0:0:0:0:ffff:4179:ed74
65.121.237.117 0:0:0:0:0:ffff:4179:ed75
65.121.237.118 0:0:0:0:0:ffff:4179:ed76
65.121.237.119 0:0:0:0:0:ffff:4179:ed77
65.121.237.120 0:0:0:0:0:ffff:4179:ed78


65.121.237.121 0:0:0:0:0:ffff:4179:ed79
65.121.237.122 0:0:0:0:0:ffff:4179:ed7a
65.121.237.123 0:0:0:0:0:ffff:4179:ed7b
65.121.237.124 0:0:0:0:0:ffff:4179:ed7c
65.121.237.125 0:0:0:0:0:ffff:4179:ed7d
65.121.237.126 0:0:0:0:0:ffff:4179:ed7e
65.121.237.127 0:0:0:0:0:ffff:4179:ed7f
65.121.237.128 0:0:0:0:0:ffff:4179:ed80
65.121.237.129 0:0:0:0:0:ffff:4179:ed81
65.121.237.130 0:0:0:0:0:ffff:4179:ed82
65.121.237.131 0:0:0:0:0:ffff:4179:ed83
65.121.237.132 0:0:0:0:0:ffff:4179:ed84
65.121.237.133 0:0:0:0:0:ffff:4179:ed85
65.121.237.134 0:0:0:0:0:ffff:4179:ed86
65.121.237.135 0:0:0:0:0:ffff:4179:ed87
65.121.237.136 0:0:0:0:0:ffff:4179:ed88
65.121.237.137 0:0:0:0:0:ffff:4179:ed89
65.121.237.138 0:0:0:0:0:ffff:4179:ed8a
65.121.237.139 0:0:0:0:0:ffff:4179:ed8b
65.121.237.140 0:0:0:0:0:ffff:4179:ed8c
65.121.237.141 0:0:0:0:0:ffff:4179:ed8d
65.121.237.142 0:0:0:0:0:ffff:4179:ed8e
65.121.237.143 0:0:0:0:0:ffff:4179:ed8f
65.121.237.144 0:0:0:0:0:ffff:4179:ed90
65.121.237.145 0:0:0:0:0:ffff:4179:ed91
65.121.237.146 0:0:0:0:0:ffff:4179:ed92
65.121.237.147 0:0:0:0:0:ffff:4179:ed93
65.121.237.148 0:0:0:0:0:ffff:4179:ed94
65.121.237.149 0:0:0:0:0:ffff:4179:ed95
65.121.237.150 0:0:0:0:0:ffff:4179:ed96
65.121.237.151 0:0:0:0:0:ffff:4179:ed97
65.121.237.152 0:0:0:0:0:ffff:4179:ed98
65.121.237.153 0:0:0:0:0:ffff:4179:ed99
65.121.237.154 0:0:0:0:0:ffff:4179:ed9a
65.121.237.155 0:0:0:0:0:ffff:4179:ed9b
65.121.237.156 0:0:0:0:0:ffff:4179:ed9c
65.121.237.157 0:0:0:0:0:ffff:4179:ed9d
65.121.237.158 0:0:0:0:0:ffff:4179:ed9e
65.121.237.159 0:0:0:0:0:ffff:4179:ed9f
65.121.237.160 0:0:0:0:0:ffff:4179:eda0
65.121.237.161 0:0:0:0:0:ffff:4179:eda1
65.121.237.162 0:0:0:0:0:ffff:4179:eda2
65.121.237.163 0:0:0:0:0:ffff:4179:eda3
65.121.237.164 0:0:0:0:0:ffff:4179:eda4
65.121.237.165 0:0:0:0:0:ffff:4179:eda5
65.121.237.166 0:0:0:0:0:ffff:4179:eda6
65.121.237.167 0:0:0:0:0:ffff:4179:eda7
65.121.237.168 0:0:0:0:0:ffff:4179:eda8
65.121.237.169 0:0:0:0:0:ffff:4179:eda9
65.121.237.170 0:0:0:0:0:ffff:4179:edaa
65.121.237.171 0:0:0:0:0:ffff:4179:edab
65.121.237.172 0:0:0:0:0:ffff:4179:edac
65.121.237.173 0:0:0:0:0:ffff:4179:edad
65.121.237.174 0:0:0:0:0:ffff:4179:edae
65.121.237.175 0:0:0:0:0:ffff:4179:edaf
65.121.237.176 0:0:0:0:0:ffff:4179:edb0
65.121.237.177 0:0:0:0:0:ffff:4179:edb1
65.121.237.178 0:0:0:0:0:ffff:4179:edb2
65.121.237.179 0:0:0:0:0:ffff:4179:edb3
65.121.237.180 0:0:0:0:0:ffff:4179:edb4


65.121.237.181 0:0:0:0:0:ffff:4179:edb5
65.121.237.182 0:0:0:0:0:ffff:4179:edb6
65.121.237.183 0:0:0:0:0:ffff:4179:edb7
65.121.237.184 0:0:0:0:0:ffff:4179:edb8
65.121.237.185 0:0:0:0:0:ffff:4179:edb9
65.121.237.186 0:0:0:0:0:ffff:4179:edba
65.121.237.187 0:0:0:0:0:ffff:4179:edbb
65.121.237.188 0:0:0:0:0:ffff:4179:edbc
65.121.237.189 0:0:0:0:0:ffff:4179:edbd
65.121.237.190 0:0:0:0:0:ffff:4179:edbe
65.121.237.191 0:0:0:0:0:ffff:4179:edbf
65.121.237.192 0:0:0:0:0:ffff:4179:edc0
65.121.237.193 0:0:0:0:0:ffff:4179:edc1
65.121.237.194 0:0:0:0:0:ffff:4179:edc2
65.121.237.195 0:0:0:0:0:ffff:4179:edc3
65.121.237.196 0:0:0:0:0:ffff:4179:edc4
65.121.237.197 0:0:0:0:0:ffff:4179:edc5
65.121.237.198 0:0:0:0:0:ffff:4179:edc6
65.121.237.199 0:0:0:0:0:ffff:4179:edc7
65.121.237.200 0:0:0:0:0:ffff:4179:edc8
65.121.237.201 0:0:0:0:0:ffff:4179:edc9
65.121.237.202 0:0:0:0:0:ffff:4179:edca
65.121.237.203 0:0:0:0:0:ffff:4179:edcb
65.121.237.204 0:0:0:0:0:ffff:4179:edcc
65.121.237.205 0:0:0:0:0:ffff:4179:edcd
65.121.237.206 0:0:0:0:0:ffff:4179:edce
65.121.237.207 0:0:0:0:0:ffff:4179:edcf
65.121.237.208 0:0:0:0:0:ffff:4179:edd0
65.121.237.209 0:0:0:0:0:ffff:4179:edd1
65.121.237.210 0:0:0:0:0:ffff:4179:edd2
65.121.237.211 0:0:0:0:0:ffff:4179:edd3
65.121.237.212 0:0:0:0:0:ffff:4179:edd4
65.121.237.213 0:0:0:0:0:ffff:4179:edd5
65.121.237.214 0:0:0:0:0:ffff:4179:edd6
65.121.237.215 0:0:0:0:0:ffff:4179:edd7
65.121.237.216 0:0:0:0:0:ffff:4179:edd8
65.121.237.217 0:0:0:0:0:ffff:4179:edd9
65.121.237.218 0:0:0:0:0:ffff:4179:edda
65.121.237.219 0:0:0:0:0:ffff:4179:eddb
65.121.237.220 0:0:0:0:0:ffff:4179:eddc
65.121.237.221 0:0:0:0:0:ffff:4179:eddd
65.121.237.222 0:0:0:0:0:ffff:4179:edde
65.121.237.223 0:0:0:0:0:ffff:4179:eddf
65.121.237.224 0:0:0:0:0:ffff:4179:ede0
65.121.237.225 0:0:0:0:0:ffff:4179:ede1
65.121.237.226 0:0:0:0:0:ffff:4179:ede2
65.121.237.227 0:0:0:0:0:ffff:4179:ede3
65.121.237.228 0:0:0:0:0:ffff:4179:ede4
65.121.237.229 0:0:0:0:0:ffff:4179:ede5
65.121.237.230 0:0:0:0:0:ffff:4179:ede6
65.121.237.231 0:0:0:0:0:ffff:4179:ede7
65.121.237.232 0:0:0:0:0:ffff:4179:ede8
65.121.237.233 0:0:0:0:0:ffff:4179:ede9
65.121.237.234 0:0:0:0:0:ffff:4179:edea
65.121.237.235 0:0:0:0:0:ffff:4179:edeb
65.121.237.236 0:0:0:0:0:ffff:4179:edec
65.121.237.237 0:0:0:0:0:ffff:4179:eded
65.121.237.238 0:0:0:0:0:ffff:4179:edee
65.121.237.239 0:0:0:0:0:ffff:4179:edef
65.121.237.240 0:0:0:0:0:ffff:4179:edf0
65.121.237.241 0:0:0:0:0:ffff:4179:edf1
65.121.237.242 0:0:0:0:0:ffff:4179:edf2
65.121.237.243 0:0:0:0:0:ffff:4179:edf3
65.121.237.244 0:0:0:0:0:ffff:4179:edf4
65.121.237.245 0:0:0:0:0:ffff:4179:edf5
65.121.237.246 0:0:0:0:0:ffff:4179:edf6
65.121.237.247 0:0:0:0:0:ffff:4179:edf7
65.121.237.248 0:0:0:0:0:ffff:4179:edf8
65.121.237.249 0:0:0:0:0:ffff:4179:edf9
65.121.237.250 0:0:0:0:0:ffff:4179:edfa
65.121.237.251 0:0:0:0:0:ffff:4179:edfb
65.121.237.252 0:0:0:0:0:ffff:4179:edfc
65.121.237.253 0:0:0:0:0:ffff:4179:edfd
65.121.237.254 0:0:0:0:0:ffff:4179:edfe
65.121.237.255 0:0:0:0:0:ffff:4179:edff


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.