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
40.168.221.1 0:0:0:0:0:ffff:28a8:dd01
40.168.221.2 0:0:0:0:0:ffff:28a8:dd02
40.168.221.3 0:0:0:0:0:ffff:28a8:dd03
40.168.221.4 0:0:0:0:0:ffff:28a8:dd04
40.168.221.5 0:0:0:0:0:ffff:28a8:dd05
40.168.221.6 0:0:0:0:0:ffff:28a8:dd06
40.168.221.7 0:0:0:0:0:ffff:28a8:dd07
40.168.221.8 0:0:0:0:0:ffff:28a8:dd08
40.168.221.9 0:0:0:0:0:ffff:28a8:dd09
40.168.221.10 0:0:0:0:0:ffff:28a8:dd0a
40.168.221.11 0:0:0:0:0:ffff:28a8:dd0b
40.168.221.12 0:0:0:0:0:ffff:28a8:dd0c
40.168.221.13 0:0:0:0:0:ffff:28a8:dd0d
40.168.221.14 0:0:0:0:0:ffff:28a8:dd0e
40.168.221.15 0:0:0:0:0:ffff:28a8:dd0f
40.168.221.16 0:0:0:0:0:ffff:28a8:dd10
40.168.221.17 0:0:0:0:0:ffff:28a8:dd11
40.168.221.18 0:0:0:0:0:ffff:28a8:dd12
40.168.221.19 0:0:0:0:0:ffff:28a8:dd13
40.168.221.20 0:0:0:0:0:ffff:28a8:dd14
40.168.221.21 0:0:0:0:0:ffff:28a8:dd15
40.168.221.22 0:0:0:0:0:ffff:28a8:dd16
40.168.221.23 0:0:0:0:0:ffff:28a8:dd17
40.168.221.24 0:0:0:0:0:ffff:28a8:dd18
40.168.221.25 0:0:0:0:0:ffff:28a8:dd19
40.168.221.26 0:0:0:0:0:ffff:28a8:dd1a
40.168.221.27 0:0:0:0:0:ffff:28a8:dd1b
40.168.221.28 0:0:0:0:0:ffff:28a8:dd1c
40.168.221.29 0:0:0:0:0:ffff:28a8:dd1d
40.168.221.30 0:0:0:0:0:ffff:28a8:dd1e
40.168.221.31 0:0:0:0:0:ffff:28a8:dd1f
40.168.221.32 0:0:0:0:0:ffff:28a8:dd20
40.168.221.33 0:0:0:0:0:ffff:28a8:dd21
40.168.221.34 0:0:0:0:0:ffff:28a8:dd22
40.168.221.35 0:0:0:0:0:ffff:28a8:dd23
40.168.221.36 0:0:0:0:0:ffff:28a8:dd24
40.168.221.37 0:0:0:0:0:ffff:28a8:dd25
40.168.221.38 0:0:0:0:0:ffff:28a8:dd26
40.168.221.39 0:0:0:0:0:ffff:28a8:dd27
40.168.221.40 0:0:0:0:0:ffff:28a8:dd28
40.168.221.41 0:0:0:0:0:ffff:28a8:dd29
40.168.221.42 0:0:0:0:0:ffff:28a8:dd2a
40.168.221.43 0:0:0:0:0:ffff:28a8:dd2b
40.168.221.44 0:0:0:0:0:ffff:28a8:dd2c
40.168.221.45 0:0:0:0:0:ffff:28a8:dd2d
40.168.221.46 0:0:0:0:0:ffff:28a8:dd2e
40.168.221.47 0:0:0:0:0:ffff:28a8:dd2f
40.168.221.48 0:0:0:0:0:ffff:28a8:dd30
40.168.221.49 0:0:0:0:0:ffff:28a8:dd31
40.168.221.50 0:0:0:0:0:ffff:28a8:dd32
40.168.221.51 0:0:0:0:0:ffff:28a8:dd33
40.168.221.52 0:0:0:0:0:ffff:28a8:dd34
40.168.221.53 0:0:0:0:0:ffff:28a8:dd35
40.168.221.54 0:0:0:0:0:ffff:28a8:dd36
40.168.221.55 0:0:0:0:0:ffff:28a8:dd37
40.168.221.56 0:0:0:0:0:ffff:28a8:dd38
40.168.221.57 0:0:0:0:0:ffff:28a8:dd39
40.168.221.58 0:0:0:0:0:ffff:28a8:dd3a
40.168.221.59 0:0:0:0:0:ffff:28a8:dd3b
40.168.221.60 0:0:0:0:0:ffff:28a8:dd3c


40.168.221.61 0:0:0:0:0:ffff:28a8:dd3d
40.168.221.62 0:0:0:0:0:ffff:28a8:dd3e
40.168.221.63 0:0:0:0:0:ffff:28a8:dd3f
40.168.221.64 0:0:0:0:0:ffff:28a8:dd40
40.168.221.65 0:0:0:0:0:ffff:28a8:dd41
40.168.221.66 0:0:0:0:0:ffff:28a8:dd42
40.168.221.67 0:0:0:0:0:ffff:28a8:dd43
40.168.221.68 0:0:0:0:0:ffff:28a8:dd44
40.168.221.69 0:0:0:0:0:ffff:28a8:dd45
40.168.221.70 0:0:0:0:0:ffff:28a8:dd46
40.168.221.71 0:0:0:0:0:ffff:28a8:dd47
40.168.221.72 0:0:0:0:0:ffff:28a8:dd48
40.168.221.73 0:0:0:0:0:ffff:28a8:dd49
40.168.221.74 0:0:0:0:0:ffff:28a8:dd4a
40.168.221.75 0:0:0:0:0:ffff:28a8:dd4b
40.168.221.76 0:0:0:0:0:ffff:28a8:dd4c
40.168.221.77 0:0:0:0:0:ffff:28a8:dd4d
40.168.221.78 0:0:0:0:0:ffff:28a8:dd4e
40.168.221.79 0:0:0:0:0:ffff:28a8:dd4f
40.168.221.80 0:0:0:0:0:ffff:28a8:dd50
40.168.221.81 0:0:0:0:0:ffff:28a8:dd51
40.168.221.82 0:0:0:0:0:ffff:28a8:dd52
40.168.221.83 0:0:0:0:0:ffff:28a8:dd53
40.168.221.84 0:0:0:0:0:ffff:28a8:dd54
40.168.221.85 0:0:0:0:0:ffff:28a8:dd55
40.168.221.86 0:0:0:0:0:ffff:28a8:dd56
40.168.221.87 0:0:0:0:0:ffff:28a8:dd57
40.168.221.88 0:0:0:0:0:ffff:28a8:dd58
40.168.221.89 0:0:0:0:0:ffff:28a8:dd59
40.168.221.90 0:0:0:0:0:ffff:28a8:dd5a
40.168.221.91 0:0:0:0:0:ffff:28a8:dd5b
40.168.221.92 0:0:0:0:0:ffff:28a8:dd5c
40.168.221.93 0:0:0:0:0:ffff:28a8:dd5d
40.168.221.94 0:0:0:0:0:ffff:28a8:dd5e
40.168.221.95 0:0:0:0:0:ffff:28a8:dd5f
40.168.221.96 0:0:0:0:0:ffff:28a8:dd60
40.168.221.97 0:0:0:0:0:ffff:28a8:dd61
40.168.221.98 0:0:0:0:0:ffff:28a8:dd62
40.168.221.99 0:0:0:0:0:ffff:28a8:dd63
40.168.221.100 0:0:0:0:0:ffff:28a8:dd64
40.168.221.101 0:0:0:0:0:ffff:28a8:dd65
40.168.221.102 0:0:0:0:0:ffff:28a8:dd66
40.168.221.103 0:0:0:0:0:ffff:28a8:dd67
40.168.221.104 0:0:0:0:0:ffff:28a8:dd68
40.168.221.105 0:0:0:0:0:ffff:28a8:dd69
40.168.221.106 0:0:0:0:0:ffff:28a8:dd6a
40.168.221.107 0:0:0:0:0:ffff:28a8:dd6b
40.168.221.108 0:0:0:0:0:ffff:28a8:dd6c
40.168.221.109 0:0:0:0:0:ffff:28a8:dd6d
40.168.221.110 0:0:0:0:0:ffff:28a8:dd6e
40.168.221.111 0:0:0:0:0:ffff:28a8:dd6f
40.168.221.112 0:0:0:0:0:ffff:28a8:dd70
40.168.221.113 0:0:0:0:0:ffff:28a8:dd71
40.168.221.114 0:0:0:0:0:ffff:28a8:dd72
40.168.221.115 0:0:0:0:0:ffff:28a8:dd73
40.168.221.116 0:0:0:0:0:ffff:28a8:dd74
40.168.221.117 0:0:0:0:0:ffff:28a8:dd75
40.168.221.118 0:0:0:0:0:ffff:28a8:dd76
40.168.221.119 0:0:0:0:0:ffff:28a8:dd77
40.168.221.120 0:0:0:0:0:ffff:28a8:dd78


40.168.221.121 0:0:0:0:0:ffff:28a8:dd79
40.168.221.122 0:0:0:0:0:ffff:28a8:dd7a
40.168.221.123 0:0:0:0:0:ffff:28a8:dd7b
40.168.221.124 0:0:0:0:0:ffff:28a8:dd7c
40.168.221.125 0:0:0:0:0:ffff:28a8:dd7d
40.168.221.126 0:0:0:0:0:ffff:28a8:dd7e
40.168.221.127 0:0:0:0:0:ffff:28a8:dd7f
40.168.221.128 0:0:0:0:0:ffff:28a8:dd80
40.168.221.129 0:0:0:0:0:ffff:28a8:dd81
40.168.221.130 0:0:0:0:0:ffff:28a8:dd82
40.168.221.131 0:0:0:0:0:ffff:28a8:dd83
40.168.221.132 0:0:0:0:0:ffff:28a8:dd84
40.168.221.133 0:0:0:0:0:ffff:28a8:dd85
40.168.221.134 0:0:0:0:0:ffff:28a8:dd86
40.168.221.135 0:0:0:0:0:ffff:28a8:dd87
40.168.221.136 0:0:0:0:0:ffff:28a8:dd88
40.168.221.137 0:0:0:0:0:ffff:28a8:dd89
40.168.221.138 0:0:0:0:0:ffff:28a8:dd8a
40.168.221.139 0:0:0:0:0:ffff:28a8:dd8b
40.168.221.140 0:0:0:0:0:ffff:28a8:dd8c
40.168.221.141 0:0:0:0:0:ffff:28a8:dd8d
40.168.221.142 0:0:0:0:0:ffff:28a8:dd8e
40.168.221.143 0:0:0:0:0:ffff:28a8:dd8f
40.168.221.144 0:0:0:0:0:ffff:28a8:dd90
40.168.221.145 0:0:0:0:0:ffff:28a8:dd91
40.168.221.146 0:0:0:0:0:ffff:28a8:dd92
40.168.221.147 0:0:0:0:0:ffff:28a8:dd93
40.168.221.148 0:0:0:0:0:ffff:28a8:dd94
40.168.221.149 0:0:0:0:0:ffff:28a8:dd95
40.168.221.150 0:0:0:0:0:ffff:28a8:dd96
40.168.221.151 0:0:0:0:0:ffff:28a8:dd97
40.168.221.152 0:0:0:0:0:ffff:28a8:dd98
40.168.221.153 0:0:0:0:0:ffff:28a8:dd99
40.168.221.154 0:0:0:0:0:ffff:28a8:dd9a
40.168.221.155 0:0:0:0:0:ffff:28a8:dd9b
40.168.221.156 0:0:0:0:0:ffff:28a8:dd9c
40.168.221.157 0:0:0:0:0:ffff:28a8:dd9d
40.168.221.158 0:0:0:0:0:ffff:28a8:dd9e
40.168.221.159 0:0:0:0:0:ffff:28a8:dd9f
40.168.221.160 0:0:0:0:0:ffff:28a8:dda0
40.168.221.161 0:0:0:0:0:ffff:28a8:dda1
40.168.221.162 0:0:0:0:0:ffff:28a8:dda2
40.168.221.163 0:0:0:0:0:ffff:28a8:dda3
40.168.221.164 0:0:0:0:0:ffff:28a8:dda4
40.168.221.165 0:0:0:0:0:ffff:28a8:dda5
40.168.221.166 0:0:0:0:0:ffff:28a8:dda6
40.168.221.167 0:0:0:0:0:ffff:28a8:dda7
40.168.221.168 0:0:0:0:0:ffff:28a8:dda8
40.168.221.169 0:0:0:0:0:ffff:28a8:dda9
40.168.221.170 0:0:0:0:0:ffff:28a8:ddaa
40.168.221.171 0:0:0:0:0:ffff:28a8:ddab
40.168.221.172 0:0:0:0:0:ffff:28a8:ddac
40.168.221.173 0:0:0:0:0:ffff:28a8:ddad
40.168.221.174 0:0:0:0:0:ffff:28a8:ddae
40.168.221.175 0:0:0:0:0:ffff:28a8:ddaf
40.168.221.176 0:0:0:0:0:ffff:28a8:ddb0
40.168.221.177 0:0:0:0:0:ffff:28a8:ddb1
40.168.221.178 0:0:0:0:0:ffff:28a8:ddb2
40.168.221.179 0:0:0:0:0:ffff:28a8:ddb3
40.168.221.180 0:0:0:0:0:ffff:28a8:ddb4


40.168.221.181 0:0:0:0:0:ffff:28a8:ddb5
40.168.221.182 0:0:0:0:0:ffff:28a8:ddb6
40.168.221.183 0:0:0:0:0:ffff:28a8:ddb7
40.168.221.184 0:0:0:0:0:ffff:28a8:ddb8
40.168.221.185 0:0:0:0:0:ffff:28a8:ddb9
40.168.221.186 0:0:0:0:0:ffff:28a8:ddba
40.168.221.187 0:0:0:0:0:ffff:28a8:ddbb
40.168.221.188 0:0:0:0:0:ffff:28a8:ddbc
40.168.221.189 0:0:0:0:0:ffff:28a8:ddbd
40.168.221.190 0:0:0:0:0:ffff:28a8:ddbe
40.168.221.191 0:0:0:0:0:ffff:28a8:ddbf
40.168.221.192 0:0:0:0:0:ffff:28a8:ddc0
40.168.221.193 0:0:0:0:0:ffff:28a8:ddc1
40.168.221.194 0:0:0:0:0:ffff:28a8:ddc2
40.168.221.195 0:0:0:0:0:ffff:28a8:ddc3
40.168.221.196 0:0:0:0:0:ffff:28a8:ddc4
40.168.221.197 0:0:0:0:0:ffff:28a8:ddc5
40.168.221.198 0:0:0:0:0:ffff:28a8:ddc6
40.168.221.199 0:0:0:0:0:ffff:28a8:ddc7
40.168.221.200 0:0:0:0:0:ffff:28a8:ddc8
40.168.221.201 0:0:0:0:0:ffff:28a8:ddc9
40.168.221.202 0:0:0:0:0:ffff:28a8:ddca
40.168.221.203 0:0:0:0:0:ffff:28a8:ddcb
40.168.221.204 0:0:0:0:0:ffff:28a8:ddcc
40.168.221.205 0:0:0:0:0:ffff:28a8:ddcd
40.168.221.206 0:0:0:0:0:ffff:28a8:ddce
40.168.221.207 0:0:0:0:0:ffff:28a8:ddcf
40.168.221.208 0:0:0:0:0:ffff:28a8:ddd0
40.168.221.209 0:0:0:0:0:ffff:28a8:ddd1
40.168.221.210 0:0:0:0:0:ffff:28a8:ddd2
40.168.221.211 0:0:0:0:0:ffff:28a8:ddd3
40.168.221.212 0:0:0:0:0:ffff:28a8:ddd4
40.168.221.213 0:0:0:0:0:ffff:28a8:ddd5
40.168.221.214 0:0:0:0:0:ffff:28a8:ddd6
40.168.221.215 0:0:0:0:0:ffff:28a8:ddd7
40.168.221.216 0:0:0:0:0:ffff:28a8:ddd8
40.168.221.217 0:0:0:0:0:ffff:28a8:ddd9
40.168.221.218 0:0:0:0:0:ffff:28a8:ddda
40.168.221.219 0:0:0:0:0:ffff:28a8:dddb
40.168.221.220 0:0:0:0:0:ffff:28a8:dddc
40.168.221.221 0:0:0:0:0:ffff:28a8:dddd
40.168.221.222 0:0:0:0:0:ffff:28a8:ddde
40.168.221.223 0:0:0:0:0:ffff:28a8:dddf
40.168.221.224 0:0:0:0:0:ffff:28a8:dde0
40.168.221.225 0:0:0:0:0:ffff:28a8:dde1
40.168.221.226 0:0:0:0:0:ffff:28a8:dde2
40.168.221.227 0:0:0:0:0:ffff:28a8:dde3
40.168.221.228 0:0:0:0:0:ffff:28a8:dde4
40.168.221.229 0:0:0:0:0:ffff:28a8:dde5
40.168.221.230 0:0:0:0:0:ffff:28a8:dde6
40.168.221.231 0:0:0:0:0:ffff:28a8:dde7
40.168.221.232 0:0:0:0:0:ffff:28a8:dde8
40.168.221.233 0:0:0:0:0:ffff:28a8:dde9
40.168.221.234 0:0:0:0:0:ffff:28a8:ddea
40.168.221.235 0:0:0:0:0:ffff:28a8:ddeb
40.168.221.236 0:0:0:0:0:ffff:28a8:ddec
40.168.221.237 0:0:0:0:0:ffff:28a8:dded
40.168.221.238 0:0:0:0:0:ffff:28a8:ddee
40.168.221.239 0:0:0:0:0:ffff:28a8:ddef
40.168.221.240 0:0:0:0:0:ffff:28a8:ddf0
40.168.221.241 0:0:0:0:0:ffff:28a8:ddf1
40.168.221.242 0:0:0:0:0:ffff:28a8:ddf2
40.168.221.243 0:0:0:0:0:ffff:28a8:ddf3
40.168.221.244 0:0:0:0:0:ffff:28a8:ddf4
40.168.221.245 0:0:0:0:0:ffff:28a8:ddf5
40.168.221.246 0:0:0:0:0:ffff:28a8:ddf6
40.168.221.247 0:0:0:0:0:ffff:28a8:ddf7
40.168.221.248 0:0:0:0:0:ffff:28a8:ddf8
40.168.221.249 0:0:0:0:0:ffff:28a8:ddf9
40.168.221.250 0:0:0:0:0:ffff:28a8:ddfa
40.168.221.251 0:0:0:0:0:ffff:28a8:ddfb
40.168.221.252 0:0:0:0:0:ffff:28a8:ddfc
40.168.221.253 0:0:0:0:0:ffff:28a8:ddfd
40.168.221.254 0:0:0:0:0:ffff:28a8:ddfe
40.168.221.255 0:0:0:0:0:ffff:28a8:ddff


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.