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
123.221.28.1 0:0:0:0:0:ffff:7bdd:1c01
123.221.28.2 0:0:0:0:0:ffff:7bdd:1c02
123.221.28.3 0:0:0:0:0:ffff:7bdd:1c03
123.221.28.4 0:0:0:0:0:ffff:7bdd:1c04
123.221.28.5 0:0:0:0:0:ffff:7bdd:1c05
123.221.28.6 0:0:0:0:0:ffff:7bdd:1c06
123.221.28.7 0:0:0:0:0:ffff:7bdd:1c07
123.221.28.8 0:0:0:0:0:ffff:7bdd:1c08
123.221.28.9 0:0:0:0:0:ffff:7bdd:1c09
123.221.28.10 0:0:0:0:0:ffff:7bdd:1c0a
123.221.28.11 0:0:0:0:0:ffff:7bdd:1c0b
123.221.28.12 0:0:0:0:0:ffff:7bdd:1c0c
123.221.28.13 0:0:0:0:0:ffff:7bdd:1c0d
123.221.28.14 0:0:0:0:0:ffff:7bdd:1c0e
123.221.28.15 0:0:0:0:0:ffff:7bdd:1c0f
123.221.28.16 0:0:0:0:0:ffff:7bdd:1c10
123.221.28.17 0:0:0:0:0:ffff:7bdd:1c11
123.221.28.18 0:0:0:0:0:ffff:7bdd:1c12
123.221.28.19 0:0:0:0:0:ffff:7bdd:1c13
123.221.28.20 0:0:0:0:0:ffff:7bdd:1c14
123.221.28.21 0:0:0:0:0:ffff:7bdd:1c15
123.221.28.22 0:0:0:0:0:ffff:7bdd:1c16
123.221.28.23 0:0:0:0:0:ffff:7bdd:1c17
123.221.28.24 0:0:0:0:0:ffff:7bdd:1c18
123.221.28.25 0:0:0:0:0:ffff:7bdd:1c19
123.221.28.26 0:0:0:0:0:ffff:7bdd:1c1a
123.221.28.27 0:0:0:0:0:ffff:7bdd:1c1b
123.221.28.28 0:0:0:0:0:ffff:7bdd:1c1c
123.221.28.29 0:0:0:0:0:ffff:7bdd:1c1d
123.221.28.30 0:0:0:0:0:ffff:7bdd:1c1e
123.221.28.31 0:0:0:0:0:ffff:7bdd:1c1f
123.221.28.32 0:0:0:0:0:ffff:7bdd:1c20
123.221.28.33 0:0:0:0:0:ffff:7bdd:1c21
123.221.28.34 0:0:0:0:0:ffff:7bdd:1c22
123.221.28.35 0:0:0:0:0:ffff:7bdd:1c23
123.221.28.36 0:0:0:0:0:ffff:7bdd:1c24
123.221.28.37 0:0:0:0:0:ffff:7bdd:1c25
123.221.28.38 0:0:0:0:0:ffff:7bdd:1c26
123.221.28.39 0:0:0:0:0:ffff:7bdd:1c27
123.221.28.40 0:0:0:0:0:ffff:7bdd:1c28
123.221.28.41 0:0:0:0:0:ffff:7bdd:1c29
123.221.28.42 0:0:0:0:0:ffff:7bdd:1c2a
123.221.28.43 0:0:0:0:0:ffff:7bdd:1c2b
123.221.28.44 0:0:0:0:0:ffff:7bdd:1c2c
123.221.28.45 0:0:0:0:0:ffff:7bdd:1c2d
123.221.28.46 0:0:0:0:0:ffff:7bdd:1c2e
123.221.28.47 0:0:0:0:0:ffff:7bdd:1c2f
123.221.28.48 0:0:0:0:0:ffff:7bdd:1c30
123.221.28.49 0:0:0:0:0:ffff:7bdd:1c31
123.221.28.50 0:0:0:0:0:ffff:7bdd:1c32
123.221.28.51 0:0:0:0:0:ffff:7bdd:1c33
123.221.28.52 0:0:0:0:0:ffff:7bdd:1c34
123.221.28.53 0:0:0:0:0:ffff:7bdd:1c35
123.221.28.54 0:0:0:0:0:ffff:7bdd:1c36
123.221.28.55 0:0:0:0:0:ffff:7bdd:1c37
123.221.28.56 0:0:0:0:0:ffff:7bdd:1c38
123.221.28.57 0:0:0:0:0:ffff:7bdd:1c39
123.221.28.58 0:0:0:0:0:ffff:7bdd:1c3a
123.221.28.59 0:0:0:0:0:ffff:7bdd:1c3b
123.221.28.60 0:0:0:0:0:ffff:7bdd:1c3c


123.221.28.61 0:0:0:0:0:ffff:7bdd:1c3d
123.221.28.62 0:0:0:0:0:ffff:7bdd:1c3e
123.221.28.63 0:0:0:0:0:ffff:7bdd:1c3f
123.221.28.64 0:0:0:0:0:ffff:7bdd:1c40
123.221.28.65 0:0:0:0:0:ffff:7bdd:1c41
123.221.28.66 0:0:0:0:0:ffff:7bdd:1c42
123.221.28.67 0:0:0:0:0:ffff:7bdd:1c43
123.221.28.68 0:0:0:0:0:ffff:7bdd:1c44
123.221.28.69 0:0:0:0:0:ffff:7bdd:1c45
123.221.28.70 0:0:0:0:0:ffff:7bdd:1c46
123.221.28.71 0:0:0:0:0:ffff:7bdd:1c47
123.221.28.72 0:0:0:0:0:ffff:7bdd:1c48
123.221.28.73 0:0:0:0:0:ffff:7bdd:1c49
123.221.28.74 0:0:0:0:0:ffff:7bdd:1c4a
123.221.28.75 0:0:0:0:0:ffff:7bdd:1c4b
123.221.28.76 0:0:0:0:0:ffff:7bdd:1c4c
123.221.28.77 0:0:0:0:0:ffff:7bdd:1c4d
123.221.28.78 0:0:0:0:0:ffff:7bdd:1c4e
123.221.28.79 0:0:0:0:0:ffff:7bdd:1c4f
123.221.28.80 0:0:0:0:0:ffff:7bdd:1c50
123.221.28.81 0:0:0:0:0:ffff:7bdd:1c51
123.221.28.82 0:0:0:0:0:ffff:7bdd:1c52
123.221.28.83 0:0:0:0:0:ffff:7bdd:1c53
123.221.28.84 0:0:0:0:0:ffff:7bdd:1c54
123.221.28.85 0:0:0:0:0:ffff:7bdd:1c55
123.221.28.86 0:0:0:0:0:ffff:7bdd:1c56
123.221.28.87 0:0:0:0:0:ffff:7bdd:1c57
123.221.28.88 0:0:0:0:0:ffff:7bdd:1c58
123.221.28.89 0:0:0:0:0:ffff:7bdd:1c59
123.221.28.90 0:0:0:0:0:ffff:7bdd:1c5a
123.221.28.91 0:0:0:0:0:ffff:7bdd:1c5b
123.221.28.92 0:0:0:0:0:ffff:7bdd:1c5c
123.221.28.93 0:0:0:0:0:ffff:7bdd:1c5d
123.221.28.94 0:0:0:0:0:ffff:7bdd:1c5e
123.221.28.95 0:0:0:0:0:ffff:7bdd:1c5f
123.221.28.96 0:0:0:0:0:ffff:7bdd:1c60
123.221.28.97 0:0:0:0:0:ffff:7bdd:1c61
123.221.28.98 0:0:0:0:0:ffff:7bdd:1c62
123.221.28.99 0:0:0:0:0:ffff:7bdd:1c63
123.221.28.100 0:0:0:0:0:ffff:7bdd:1c64
123.221.28.101 0:0:0:0:0:ffff:7bdd:1c65
123.221.28.102 0:0:0:0:0:ffff:7bdd:1c66
123.221.28.103 0:0:0:0:0:ffff:7bdd:1c67
123.221.28.104 0:0:0:0:0:ffff:7bdd:1c68
123.221.28.105 0:0:0:0:0:ffff:7bdd:1c69
123.221.28.106 0:0:0:0:0:ffff:7bdd:1c6a
123.221.28.107 0:0:0:0:0:ffff:7bdd:1c6b
123.221.28.108 0:0:0:0:0:ffff:7bdd:1c6c
123.221.28.109 0:0:0:0:0:ffff:7bdd:1c6d
123.221.28.110 0:0:0:0:0:ffff:7bdd:1c6e
123.221.28.111 0:0:0:0:0:ffff:7bdd:1c6f
123.221.28.112 0:0:0:0:0:ffff:7bdd:1c70
123.221.28.113 0:0:0:0:0:ffff:7bdd:1c71
123.221.28.114 0:0:0:0:0:ffff:7bdd:1c72
123.221.28.115 0:0:0:0:0:ffff:7bdd:1c73
123.221.28.116 0:0:0:0:0:ffff:7bdd:1c74
123.221.28.117 0:0:0:0:0:ffff:7bdd:1c75
123.221.28.118 0:0:0:0:0:ffff:7bdd:1c76
123.221.28.119 0:0:0:0:0:ffff:7bdd:1c77
123.221.28.120 0:0:0:0:0:ffff:7bdd:1c78


123.221.28.121 0:0:0:0:0:ffff:7bdd:1c79
123.221.28.122 0:0:0:0:0:ffff:7bdd:1c7a
123.221.28.123 0:0:0:0:0:ffff:7bdd:1c7b
123.221.28.124 0:0:0:0:0:ffff:7bdd:1c7c
123.221.28.125 0:0:0:0:0:ffff:7bdd:1c7d
123.221.28.126 0:0:0:0:0:ffff:7bdd:1c7e
123.221.28.127 0:0:0:0:0:ffff:7bdd:1c7f
123.221.28.128 0:0:0:0:0:ffff:7bdd:1c80
123.221.28.129 0:0:0:0:0:ffff:7bdd:1c81
123.221.28.130 0:0:0:0:0:ffff:7bdd:1c82
123.221.28.131 0:0:0:0:0:ffff:7bdd:1c83
123.221.28.132 0:0:0:0:0:ffff:7bdd:1c84
123.221.28.133 0:0:0:0:0:ffff:7bdd:1c85
123.221.28.134 0:0:0:0:0:ffff:7bdd:1c86
123.221.28.135 0:0:0:0:0:ffff:7bdd:1c87
123.221.28.136 0:0:0:0:0:ffff:7bdd:1c88
123.221.28.137 0:0:0:0:0:ffff:7bdd:1c89
123.221.28.138 0:0:0:0:0:ffff:7bdd:1c8a
123.221.28.139 0:0:0:0:0:ffff:7bdd:1c8b
123.221.28.140 0:0:0:0:0:ffff:7bdd:1c8c
123.221.28.141 0:0:0:0:0:ffff:7bdd:1c8d
123.221.28.142 0:0:0:0:0:ffff:7bdd:1c8e
123.221.28.143 0:0:0:0:0:ffff:7bdd:1c8f
123.221.28.144 0:0:0:0:0:ffff:7bdd:1c90
123.221.28.145 0:0:0:0:0:ffff:7bdd:1c91
123.221.28.146 0:0:0:0:0:ffff:7bdd:1c92
123.221.28.147 0:0:0:0:0:ffff:7bdd:1c93
123.221.28.148 0:0:0:0:0:ffff:7bdd:1c94
123.221.28.149 0:0:0:0:0:ffff:7bdd:1c95
123.221.28.150 0:0:0:0:0:ffff:7bdd:1c96
123.221.28.151 0:0:0:0:0:ffff:7bdd:1c97
123.221.28.152 0:0:0:0:0:ffff:7bdd:1c98
123.221.28.153 0:0:0:0:0:ffff:7bdd:1c99
123.221.28.154 0:0:0:0:0:ffff:7bdd:1c9a
123.221.28.155 0:0:0:0:0:ffff:7bdd:1c9b
123.221.28.156 0:0:0:0:0:ffff:7bdd:1c9c
123.221.28.157 0:0:0:0:0:ffff:7bdd:1c9d
123.221.28.158 0:0:0:0:0:ffff:7bdd:1c9e
123.221.28.159 0:0:0:0:0:ffff:7bdd:1c9f
123.221.28.160 0:0:0:0:0:ffff:7bdd:1ca0
123.221.28.161 0:0:0:0:0:ffff:7bdd:1ca1
123.221.28.162 0:0:0:0:0:ffff:7bdd:1ca2
123.221.28.163 0:0:0:0:0:ffff:7bdd:1ca3
123.221.28.164 0:0:0:0:0:ffff:7bdd:1ca4
123.221.28.165 0:0:0:0:0:ffff:7bdd:1ca5
123.221.28.166 0:0:0:0:0:ffff:7bdd:1ca6
123.221.28.167 0:0:0:0:0:ffff:7bdd:1ca7
123.221.28.168 0:0:0:0:0:ffff:7bdd:1ca8
123.221.28.169 0:0:0:0:0:ffff:7bdd:1ca9
123.221.28.170 0:0:0:0:0:ffff:7bdd:1caa
123.221.28.171 0:0:0:0:0:ffff:7bdd:1cab
123.221.28.172 0:0:0:0:0:ffff:7bdd:1cac
123.221.28.173 0:0:0:0:0:ffff:7bdd:1cad
123.221.28.174 0:0:0:0:0:ffff:7bdd:1cae
123.221.28.175 0:0:0:0:0:ffff:7bdd:1caf
123.221.28.176 0:0:0:0:0:ffff:7bdd:1cb0
123.221.28.177 0:0:0:0:0:ffff:7bdd:1cb1
123.221.28.178 0:0:0:0:0:ffff:7bdd:1cb2
123.221.28.179 0:0:0:0:0:ffff:7bdd:1cb3
123.221.28.180 0:0:0:0:0:ffff:7bdd:1cb4


123.221.28.181 0:0:0:0:0:ffff:7bdd:1cb5
123.221.28.182 0:0:0:0:0:ffff:7bdd:1cb6
123.221.28.183 0:0:0:0:0:ffff:7bdd:1cb7
123.221.28.184 0:0:0:0:0:ffff:7bdd:1cb8
123.221.28.185 0:0:0:0:0:ffff:7bdd:1cb9
123.221.28.186 0:0:0:0:0:ffff:7bdd:1cba
123.221.28.187 0:0:0:0:0:ffff:7bdd:1cbb
123.221.28.188 0:0:0:0:0:ffff:7bdd:1cbc
123.221.28.189 0:0:0:0:0:ffff:7bdd:1cbd
123.221.28.190 0:0:0:0:0:ffff:7bdd:1cbe
123.221.28.191 0:0:0:0:0:ffff:7bdd:1cbf
123.221.28.192 0:0:0:0:0:ffff:7bdd:1cc0
123.221.28.193 0:0:0:0:0:ffff:7bdd:1cc1
123.221.28.194 0:0:0:0:0:ffff:7bdd:1cc2
123.221.28.195 0:0:0:0:0:ffff:7bdd:1cc3
123.221.28.196 0:0:0:0:0:ffff:7bdd:1cc4
123.221.28.197 0:0:0:0:0:ffff:7bdd:1cc5
123.221.28.198 0:0:0:0:0:ffff:7bdd:1cc6
123.221.28.199 0:0:0:0:0:ffff:7bdd:1cc7
123.221.28.200 0:0:0:0:0:ffff:7bdd:1cc8
123.221.28.201 0:0:0:0:0:ffff:7bdd:1cc9
123.221.28.202 0:0:0:0:0:ffff:7bdd:1cca
123.221.28.203 0:0:0:0:0:ffff:7bdd:1ccb
123.221.28.204 0:0:0:0:0:ffff:7bdd:1ccc
123.221.28.205 0:0:0:0:0:ffff:7bdd:1ccd
123.221.28.206 0:0:0:0:0:ffff:7bdd:1cce
123.221.28.207 0:0:0:0:0:ffff:7bdd:1ccf
123.221.28.208 0:0:0:0:0:ffff:7bdd:1cd0
123.221.28.209 0:0:0:0:0:ffff:7bdd:1cd1
123.221.28.210 0:0:0:0:0:ffff:7bdd:1cd2
123.221.28.211 0:0:0:0:0:ffff:7bdd:1cd3
123.221.28.212 0:0:0:0:0:ffff:7bdd:1cd4
123.221.28.213 0:0:0:0:0:ffff:7bdd:1cd5
123.221.28.214 0:0:0:0:0:ffff:7bdd:1cd6
123.221.28.215 0:0:0:0:0:ffff:7bdd:1cd7
123.221.28.216 0:0:0:0:0:ffff:7bdd:1cd8
123.221.28.217 0:0:0:0:0:ffff:7bdd:1cd9
123.221.28.218 0:0:0:0:0:ffff:7bdd:1cda
123.221.28.219 0:0:0:0:0:ffff:7bdd:1cdb
123.221.28.220 0:0:0:0:0:ffff:7bdd:1cdc
123.221.28.221 0:0:0:0:0:ffff:7bdd:1cdd
123.221.28.222 0:0:0:0:0:ffff:7bdd:1cde
123.221.28.223 0:0:0:0:0:ffff:7bdd:1cdf
123.221.28.224 0:0:0:0:0:ffff:7bdd:1ce0
123.221.28.225 0:0:0:0:0:ffff:7bdd:1ce1
123.221.28.226 0:0:0:0:0:ffff:7bdd:1ce2
123.221.28.227 0:0:0:0:0:ffff:7bdd:1ce3
123.221.28.228 0:0:0:0:0:ffff:7bdd:1ce4
123.221.28.229 0:0:0:0:0:ffff:7bdd:1ce5
123.221.28.230 0:0:0:0:0:ffff:7bdd:1ce6
123.221.28.231 0:0:0:0:0:ffff:7bdd:1ce7
123.221.28.232 0:0:0:0:0:ffff:7bdd:1ce8
123.221.28.233 0:0:0:0:0:ffff:7bdd:1ce9
123.221.28.234 0:0:0:0:0:ffff:7bdd:1cea
123.221.28.235 0:0:0:0:0:ffff:7bdd:1ceb
123.221.28.236 0:0:0:0:0:ffff:7bdd:1cec
123.221.28.237 0:0:0:0:0:ffff:7bdd:1ced
123.221.28.238 0:0:0:0:0:ffff:7bdd:1cee
123.221.28.239 0:0:0:0:0:ffff:7bdd:1cef
123.221.28.240 0:0:0:0:0:ffff:7bdd:1cf0
123.221.28.241 0:0:0:0:0:ffff:7bdd:1cf1
123.221.28.242 0:0:0:0:0:ffff:7bdd:1cf2
123.221.28.243 0:0:0:0:0:ffff:7bdd:1cf3
123.221.28.244 0:0:0:0:0:ffff:7bdd:1cf4
123.221.28.245 0:0:0:0:0:ffff:7bdd:1cf5
123.221.28.246 0:0:0:0:0:ffff:7bdd:1cf6
123.221.28.247 0:0:0:0:0:ffff:7bdd:1cf7
123.221.28.248 0:0:0:0:0:ffff:7bdd:1cf8
123.221.28.249 0:0:0:0:0:ffff:7bdd:1cf9
123.221.28.250 0:0:0:0:0:ffff:7bdd:1cfa
123.221.28.251 0:0:0:0:0:ffff:7bdd:1cfb
123.221.28.252 0:0:0:0:0:ffff:7bdd:1cfc
123.221.28.253 0:0:0:0:0:ffff:7bdd:1cfd
123.221.28.254 0:0:0:0:0:ffff:7bdd:1cfe
123.221.28.255 0:0:0:0:0:ffff:7bdd:1cff


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.