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
120.3.45.1 0:0:0:0:0:ffff:7803:2d01
120.3.45.2 0:0:0:0:0:ffff:7803:2d02
120.3.45.3 0:0:0:0:0:ffff:7803:2d03
120.3.45.4 0:0:0:0:0:ffff:7803:2d04
120.3.45.5 0:0:0:0:0:ffff:7803:2d05
120.3.45.6 0:0:0:0:0:ffff:7803:2d06
120.3.45.7 0:0:0:0:0:ffff:7803:2d07
120.3.45.8 0:0:0:0:0:ffff:7803:2d08
120.3.45.9 0:0:0:0:0:ffff:7803:2d09
120.3.45.10 0:0:0:0:0:ffff:7803:2d0a
120.3.45.11 0:0:0:0:0:ffff:7803:2d0b
120.3.45.12 0:0:0:0:0:ffff:7803:2d0c
120.3.45.13 0:0:0:0:0:ffff:7803:2d0d
120.3.45.14 0:0:0:0:0:ffff:7803:2d0e
120.3.45.15 0:0:0:0:0:ffff:7803:2d0f
120.3.45.16 0:0:0:0:0:ffff:7803:2d10
120.3.45.17 0:0:0:0:0:ffff:7803:2d11
120.3.45.18 0:0:0:0:0:ffff:7803:2d12
120.3.45.19 0:0:0:0:0:ffff:7803:2d13
120.3.45.20 0:0:0:0:0:ffff:7803:2d14
120.3.45.21 0:0:0:0:0:ffff:7803:2d15
120.3.45.22 0:0:0:0:0:ffff:7803:2d16
120.3.45.23 0:0:0:0:0:ffff:7803:2d17
120.3.45.24 0:0:0:0:0:ffff:7803:2d18
120.3.45.25 0:0:0:0:0:ffff:7803:2d19
120.3.45.26 0:0:0:0:0:ffff:7803:2d1a
120.3.45.27 0:0:0:0:0:ffff:7803:2d1b
120.3.45.28 0:0:0:0:0:ffff:7803:2d1c
120.3.45.29 0:0:0:0:0:ffff:7803:2d1d
120.3.45.30 0:0:0:0:0:ffff:7803:2d1e
120.3.45.31 0:0:0:0:0:ffff:7803:2d1f
120.3.45.32 0:0:0:0:0:ffff:7803:2d20
120.3.45.33 0:0:0:0:0:ffff:7803:2d21
120.3.45.34 0:0:0:0:0:ffff:7803:2d22
120.3.45.35 0:0:0:0:0:ffff:7803:2d23
120.3.45.36 0:0:0:0:0:ffff:7803:2d24
120.3.45.37 0:0:0:0:0:ffff:7803:2d25
120.3.45.38 0:0:0:0:0:ffff:7803:2d26
120.3.45.39 0:0:0:0:0:ffff:7803:2d27
120.3.45.40 0:0:0:0:0:ffff:7803:2d28
120.3.45.41 0:0:0:0:0:ffff:7803:2d29
120.3.45.42 0:0:0:0:0:ffff:7803:2d2a
120.3.45.43 0:0:0:0:0:ffff:7803:2d2b
120.3.45.44 0:0:0:0:0:ffff:7803:2d2c
120.3.45.45 0:0:0:0:0:ffff:7803:2d2d
120.3.45.46 0:0:0:0:0:ffff:7803:2d2e
120.3.45.47 0:0:0:0:0:ffff:7803:2d2f
120.3.45.48 0:0:0:0:0:ffff:7803:2d30
120.3.45.49 0:0:0:0:0:ffff:7803:2d31
120.3.45.50 0:0:0:0:0:ffff:7803:2d32
120.3.45.51 0:0:0:0:0:ffff:7803:2d33
120.3.45.52 0:0:0:0:0:ffff:7803:2d34
120.3.45.53 0:0:0:0:0:ffff:7803:2d35
120.3.45.54 0:0:0:0:0:ffff:7803:2d36
120.3.45.55 0:0:0:0:0:ffff:7803:2d37
120.3.45.56 0:0:0:0:0:ffff:7803:2d38
120.3.45.57 0:0:0:0:0:ffff:7803:2d39
120.3.45.58 0:0:0:0:0:ffff:7803:2d3a
120.3.45.59 0:0:0:0:0:ffff:7803:2d3b
120.3.45.60 0:0:0:0:0:ffff:7803:2d3c


120.3.45.61 0:0:0:0:0:ffff:7803:2d3d
120.3.45.62 0:0:0:0:0:ffff:7803:2d3e
120.3.45.63 0:0:0:0:0:ffff:7803:2d3f
120.3.45.64 0:0:0:0:0:ffff:7803:2d40
120.3.45.65 0:0:0:0:0:ffff:7803:2d41
120.3.45.66 0:0:0:0:0:ffff:7803:2d42
120.3.45.67 0:0:0:0:0:ffff:7803:2d43
120.3.45.68 0:0:0:0:0:ffff:7803:2d44
120.3.45.69 0:0:0:0:0:ffff:7803:2d45
120.3.45.70 0:0:0:0:0:ffff:7803:2d46
120.3.45.71 0:0:0:0:0:ffff:7803:2d47
120.3.45.72 0:0:0:0:0:ffff:7803:2d48
120.3.45.73 0:0:0:0:0:ffff:7803:2d49
120.3.45.74 0:0:0:0:0:ffff:7803:2d4a
120.3.45.75 0:0:0:0:0:ffff:7803:2d4b
120.3.45.76 0:0:0:0:0:ffff:7803:2d4c
120.3.45.77 0:0:0:0:0:ffff:7803:2d4d
120.3.45.78 0:0:0:0:0:ffff:7803:2d4e
120.3.45.79 0:0:0:0:0:ffff:7803:2d4f
120.3.45.80 0:0:0:0:0:ffff:7803:2d50
120.3.45.81 0:0:0:0:0:ffff:7803:2d51
120.3.45.82 0:0:0:0:0:ffff:7803:2d52
120.3.45.83 0:0:0:0:0:ffff:7803:2d53
120.3.45.84 0:0:0:0:0:ffff:7803:2d54
120.3.45.85 0:0:0:0:0:ffff:7803:2d55
120.3.45.86 0:0:0:0:0:ffff:7803:2d56
120.3.45.87 0:0:0:0:0:ffff:7803:2d57
120.3.45.88 0:0:0:0:0:ffff:7803:2d58
120.3.45.89 0:0:0:0:0:ffff:7803:2d59
120.3.45.90 0:0:0:0:0:ffff:7803:2d5a
120.3.45.91 0:0:0:0:0:ffff:7803:2d5b
120.3.45.92 0:0:0:0:0:ffff:7803:2d5c
120.3.45.93 0:0:0:0:0:ffff:7803:2d5d
120.3.45.94 0:0:0:0:0:ffff:7803:2d5e
120.3.45.95 0:0:0:0:0:ffff:7803:2d5f
120.3.45.96 0:0:0:0:0:ffff:7803:2d60
120.3.45.97 0:0:0:0:0:ffff:7803:2d61
120.3.45.98 0:0:0:0:0:ffff:7803:2d62
120.3.45.99 0:0:0:0:0:ffff:7803:2d63
120.3.45.100 0:0:0:0:0:ffff:7803:2d64
120.3.45.101 0:0:0:0:0:ffff:7803:2d65
120.3.45.102 0:0:0:0:0:ffff:7803:2d66
120.3.45.103 0:0:0:0:0:ffff:7803:2d67
120.3.45.104 0:0:0:0:0:ffff:7803:2d68
120.3.45.105 0:0:0:0:0:ffff:7803:2d69
120.3.45.106 0:0:0:0:0:ffff:7803:2d6a
120.3.45.107 0:0:0:0:0:ffff:7803:2d6b
120.3.45.108 0:0:0:0:0:ffff:7803:2d6c
120.3.45.109 0:0:0:0:0:ffff:7803:2d6d
120.3.45.110 0:0:0:0:0:ffff:7803:2d6e
120.3.45.111 0:0:0:0:0:ffff:7803:2d6f
120.3.45.112 0:0:0:0:0:ffff:7803:2d70
120.3.45.113 0:0:0:0:0:ffff:7803:2d71
120.3.45.114 0:0:0:0:0:ffff:7803:2d72
120.3.45.115 0:0:0:0:0:ffff:7803:2d73
120.3.45.116 0:0:0:0:0:ffff:7803:2d74
120.3.45.117 0:0:0:0:0:ffff:7803:2d75
120.3.45.118 0:0:0:0:0:ffff:7803:2d76
120.3.45.119 0:0:0:0:0:ffff:7803:2d77
120.3.45.120 0:0:0:0:0:ffff:7803:2d78


120.3.45.121 0:0:0:0:0:ffff:7803:2d79
120.3.45.122 0:0:0:0:0:ffff:7803:2d7a
120.3.45.123 0:0:0:0:0:ffff:7803:2d7b
120.3.45.124 0:0:0:0:0:ffff:7803:2d7c
120.3.45.125 0:0:0:0:0:ffff:7803:2d7d
120.3.45.126 0:0:0:0:0:ffff:7803:2d7e
120.3.45.127 0:0:0:0:0:ffff:7803:2d7f
120.3.45.128 0:0:0:0:0:ffff:7803:2d80
120.3.45.129 0:0:0:0:0:ffff:7803:2d81
120.3.45.130 0:0:0:0:0:ffff:7803:2d82
120.3.45.131 0:0:0:0:0:ffff:7803:2d83
120.3.45.132 0:0:0:0:0:ffff:7803:2d84
120.3.45.133 0:0:0:0:0:ffff:7803:2d85
120.3.45.134 0:0:0:0:0:ffff:7803:2d86
120.3.45.135 0:0:0:0:0:ffff:7803:2d87
120.3.45.136 0:0:0:0:0:ffff:7803:2d88
120.3.45.137 0:0:0:0:0:ffff:7803:2d89
120.3.45.138 0:0:0:0:0:ffff:7803:2d8a
120.3.45.139 0:0:0:0:0:ffff:7803:2d8b
120.3.45.140 0:0:0:0:0:ffff:7803:2d8c
120.3.45.141 0:0:0:0:0:ffff:7803:2d8d
120.3.45.142 0:0:0:0:0:ffff:7803:2d8e
120.3.45.143 0:0:0:0:0:ffff:7803:2d8f
120.3.45.144 0:0:0:0:0:ffff:7803:2d90
120.3.45.145 0:0:0:0:0:ffff:7803:2d91
120.3.45.146 0:0:0:0:0:ffff:7803:2d92
120.3.45.147 0:0:0:0:0:ffff:7803:2d93
120.3.45.148 0:0:0:0:0:ffff:7803:2d94
120.3.45.149 0:0:0:0:0:ffff:7803:2d95
120.3.45.150 0:0:0:0:0:ffff:7803:2d96
120.3.45.151 0:0:0:0:0:ffff:7803:2d97
120.3.45.152 0:0:0:0:0:ffff:7803:2d98
120.3.45.153 0:0:0:0:0:ffff:7803:2d99
120.3.45.154 0:0:0:0:0:ffff:7803:2d9a
120.3.45.155 0:0:0:0:0:ffff:7803:2d9b
120.3.45.156 0:0:0:0:0:ffff:7803:2d9c
120.3.45.157 0:0:0:0:0:ffff:7803:2d9d
120.3.45.158 0:0:0:0:0:ffff:7803:2d9e
120.3.45.159 0:0:0:0:0:ffff:7803:2d9f
120.3.45.160 0:0:0:0:0:ffff:7803:2da0
120.3.45.161 0:0:0:0:0:ffff:7803:2da1
120.3.45.162 0:0:0:0:0:ffff:7803:2da2
120.3.45.163 0:0:0:0:0:ffff:7803:2da3
120.3.45.164 0:0:0:0:0:ffff:7803:2da4
120.3.45.165 0:0:0:0:0:ffff:7803:2da5
120.3.45.166 0:0:0:0:0:ffff:7803:2da6
120.3.45.167 0:0:0:0:0:ffff:7803:2da7
120.3.45.168 0:0:0:0:0:ffff:7803:2da8
120.3.45.169 0:0:0:0:0:ffff:7803:2da9
120.3.45.170 0:0:0:0:0:ffff:7803:2daa
120.3.45.171 0:0:0:0:0:ffff:7803:2dab
120.3.45.172 0:0:0:0:0:ffff:7803:2dac
120.3.45.173 0:0:0:0:0:ffff:7803:2dad
120.3.45.174 0:0:0:0:0:ffff:7803:2dae
120.3.45.175 0:0:0:0:0:ffff:7803:2daf
120.3.45.176 0:0:0:0:0:ffff:7803:2db0
120.3.45.177 0:0:0:0:0:ffff:7803:2db1
120.3.45.178 0:0:0:0:0:ffff:7803:2db2
120.3.45.179 0:0:0:0:0:ffff:7803:2db3
120.3.45.180 0:0:0:0:0:ffff:7803:2db4


120.3.45.181 0:0:0:0:0:ffff:7803:2db5
120.3.45.182 0:0:0:0:0:ffff:7803:2db6
120.3.45.183 0:0:0:0:0:ffff:7803:2db7
120.3.45.184 0:0:0:0:0:ffff:7803:2db8
120.3.45.185 0:0:0:0:0:ffff:7803:2db9
120.3.45.186 0:0:0:0:0:ffff:7803:2dba
120.3.45.187 0:0:0:0:0:ffff:7803:2dbb
120.3.45.188 0:0:0:0:0:ffff:7803:2dbc
120.3.45.189 0:0:0:0:0:ffff:7803:2dbd
120.3.45.190 0:0:0:0:0:ffff:7803:2dbe
120.3.45.191 0:0:0:0:0:ffff:7803:2dbf
120.3.45.192 0:0:0:0:0:ffff:7803:2dc0
120.3.45.193 0:0:0:0:0:ffff:7803:2dc1
120.3.45.194 0:0:0:0:0:ffff:7803:2dc2
120.3.45.195 0:0:0:0:0:ffff:7803:2dc3
120.3.45.196 0:0:0:0:0:ffff:7803:2dc4
120.3.45.197 0:0:0:0:0:ffff:7803:2dc5
120.3.45.198 0:0:0:0:0:ffff:7803:2dc6
120.3.45.199 0:0:0:0:0:ffff:7803:2dc7
120.3.45.200 0:0:0:0:0:ffff:7803:2dc8
120.3.45.201 0:0:0:0:0:ffff:7803:2dc9
120.3.45.202 0:0:0:0:0:ffff:7803:2dca
120.3.45.203 0:0:0:0:0:ffff:7803:2dcb
120.3.45.204 0:0:0:0:0:ffff:7803:2dcc
120.3.45.205 0:0:0:0:0:ffff:7803:2dcd
120.3.45.206 0:0:0:0:0:ffff:7803:2dce
120.3.45.207 0:0:0:0:0:ffff:7803:2dcf
120.3.45.208 0:0:0:0:0:ffff:7803:2dd0
120.3.45.209 0:0:0:0:0:ffff:7803:2dd1
120.3.45.210 0:0:0:0:0:ffff:7803:2dd2
120.3.45.211 0:0:0:0:0:ffff:7803:2dd3
120.3.45.212 0:0:0:0:0:ffff:7803:2dd4
120.3.45.213 0:0:0:0:0:ffff:7803:2dd5
120.3.45.214 0:0:0:0:0:ffff:7803:2dd6
120.3.45.215 0:0:0:0:0:ffff:7803:2dd7
120.3.45.216 0:0:0:0:0:ffff:7803:2dd8
120.3.45.217 0:0:0:0:0:ffff:7803:2dd9
120.3.45.218 0:0:0:0:0:ffff:7803:2dda
120.3.45.219 0:0:0:0:0:ffff:7803:2ddb
120.3.45.220 0:0:0:0:0:ffff:7803:2ddc
120.3.45.221 0:0:0:0:0:ffff:7803:2ddd
120.3.45.222 0:0:0:0:0:ffff:7803:2dde
120.3.45.223 0:0:0:0:0:ffff:7803:2ddf
120.3.45.224 0:0:0:0:0:ffff:7803:2de0
120.3.45.225 0:0:0:0:0:ffff:7803:2de1
120.3.45.226 0:0:0:0:0:ffff:7803:2de2
120.3.45.227 0:0:0:0:0:ffff:7803:2de3
120.3.45.228 0:0:0:0:0:ffff:7803:2de4
120.3.45.229 0:0:0:0:0:ffff:7803:2de5
120.3.45.230 0:0:0:0:0:ffff:7803:2de6
120.3.45.231 0:0:0:0:0:ffff:7803:2de7
120.3.45.232 0:0:0:0:0:ffff:7803:2de8
120.3.45.233 0:0:0:0:0:ffff:7803:2de9
120.3.45.234 0:0:0:0:0:ffff:7803:2dea
120.3.45.235 0:0:0:0:0:ffff:7803:2deb
120.3.45.236 0:0:0:0:0:ffff:7803:2dec
120.3.45.237 0:0:0:0:0:ffff:7803:2ded
120.3.45.238 0:0:0:0:0:ffff:7803:2dee
120.3.45.239 0:0:0:0:0:ffff:7803:2def
120.3.45.240 0:0:0:0:0:ffff:7803:2df0
120.3.45.241 0:0:0:0:0:ffff:7803:2df1
120.3.45.242 0:0:0:0:0:ffff:7803:2df2
120.3.45.243 0:0:0:0:0:ffff:7803:2df3
120.3.45.244 0:0:0:0:0:ffff:7803:2df4
120.3.45.245 0:0:0:0:0:ffff:7803:2df5
120.3.45.246 0:0:0:0:0:ffff:7803:2df6
120.3.45.247 0:0:0:0:0:ffff:7803:2df7
120.3.45.248 0:0:0:0:0:ffff:7803:2df8
120.3.45.249 0:0:0:0:0:ffff:7803:2df9
120.3.45.250 0:0:0:0:0:ffff:7803:2dfa
120.3.45.251 0:0:0:0:0:ffff:7803:2dfb
120.3.45.252 0:0:0:0:0:ffff:7803:2dfc
120.3.45.253 0:0:0:0:0:ffff:7803:2dfd
120.3.45.254 0:0:0:0:0:ffff:7803:2dfe
120.3.45.255 0:0:0:0:0:ffff:7803:2dff


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.