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
72.255.221.1 0:0:0:0:0:ffff:48ff:dd01
72.255.221.2 0:0:0:0:0:ffff:48ff:dd02
72.255.221.3 0:0:0:0:0:ffff:48ff:dd03
72.255.221.4 0:0:0:0:0:ffff:48ff:dd04
72.255.221.5 0:0:0:0:0:ffff:48ff:dd05
72.255.221.6 0:0:0:0:0:ffff:48ff:dd06
72.255.221.7 0:0:0:0:0:ffff:48ff:dd07
72.255.221.8 0:0:0:0:0:ffff:48ff:dd08
72.255.221.9 0:0:0:0:0:ffff:48ff:dd09
72.255.221.10 0:0:0:0:0:ffff:48ff:dd0a
72.255.221.11 0:0:0:0:0:ffff:48ff:dd0b
72.255.221.12 0:0:0:0:0:ffff:48ff:dd0c
72.255.221.13 0:0:0:0:0:ffff:48ff:dd0d
72.255.221.14 0:0:0:0:0:ffff:48ff:dd0e
72.255.221.15 0:0:0:0:0:ffff:48ff:dd0f
72.255.221.16 0:0:0:0:0:ffff:48ff:dd10
72.255.221.17 0:0:0:0:0:ffff:48ff:dd11
72.255.221.18 0:0:0:0:0:ffff:48ff:dd12
72.255.221.19 0:0:0:0:0:ffff:48ff:dd13
72.255.221.20 0:0:0:0:0:ffff:48ff:dd14
72.255.221.21 0:0:0:0:0:ffff:48ff:dd15
72.255.221.22 0:0:0:0:0:ffff:48ff:dd16
72.255.221.23 0:0:0:0:0:ffff:48ff:dd17
72.255.221.24 0:0:0:0:0:ffff:48ff:dd18
72.255.221.25 0:0:0:0:0:ffff:48ff:dd19
72.255.221.26 0:0:0:0:0:ffff:48ff:dd1a
72.255.221.27 0:0:0:0:0:ffff:48ff:dd1b
72.255.221.28 0:0:0:0:0:ffff:48ff:dd1c
72.255.221.29 0:0:0:0:0:ffff:48ff:dd1d
72.255.221.30 0:0:0:0:0:ffff:48ff:dd1e
72.255.221.31 0:0:0:0:0:ffff:48ff:dd1f
72.255.221.32 0:0:0:0:0:ffff:48ff:dd20
72.255.221.33 0:0:0:0:0:ffff:48ff:dd21
72.255.221.34 0:0:0:0:0:ffff:48ff:dd22
72.255.221.35 0:0:0:0:0:ffff:48ff:dd23
72.255.221.36 0:0:0:0:0:ffff:48ff:dd24
72.255.221.37 0:0:0:0:0:ffff:48ff:dd25
72.255.221.38 0:0:0:0:0:ffff:48ff:dd26
72.255.221.39 0:0:0:0:0:ffff:48ff:dd27
72.255.221.40 0:0:0:0:0:ffff:48ff:dd28
72.255.221.41 0:0:0:0:0:ffff:48ff:dd29
72.255.221.42 0:0:0:0:0:ffff:48ff:dd2a
72.255.221.43 0:0:0:0:0:ffff:48ff:dd2b
72.255.221.44 0:0:0:0:0:ffff:48ff:dd2c
72.255.221.45 0:0:0:0:0:ffff:48ff:dd2d
72.255.221.46 0:0:0:0:0:ffff:48ff:dd2e
72.255.221.47 0:0:0:0:0:ffff:48ff:dd2f
72.255.221.48 0:0:0:0:0:ffff:48ff:dd30
72.255.221.49 0:0:0:0:0:ffff:48ff:dd31
72.255.221.50 0:0:0:0:0:ffff:48ff:dd32
72.255.221.51 0:0:0:0:0:ffff:48ff:dd33
72.255.221.52 0:0:0:0:0:ffff:48ff:dd34
72.255.221.53 0:0:0:0:0:ffff:48ff:dd35
72.255.221.54 0:0:0:0:0:ffff:48ff:dd36
72.255.221.55 0:0:0:0:0:ffff:48ff:dd37
72.255.221.56 0:0:0:0:0:ffff:48ff:dd38
72.255.221.57 0:0:0:0:0:ffff:48ff:dd39
72.255.221.58 0:0:0:0:0:ffff:48ff:dd3a
72.255.221.59 0:0:0:0:0:ffff:48ff:dd3b
72.255.221.60 0:0:0:0:0:ffff:48ff:dd3c


72.255.221.61 0:0:0:0:0:ffff:48ff:dd3d
72.255.221.62 0:0:0:0:0:ffff:48ff:dd3e
72.255.221.63 0:0:0:0:0:ffff:48ff:dd3f
72.255.221.64 0:0:0:0:0:ffff:48ff:dd40
72.255.221.65 0:0:0:0:0:ffff:48ff:dd41
72.255.221.66 0:0:0:0:0:ffff:48ff:dd42
72.255.221.67 0:0:0:0:0:ffff:48ff:dd43
72.255.221.68 0:0:0:0:0:ffff:48ff:dd44
72.255.221.69 0:0:0:0:0:ffff:48ff:dd45
72.255.221.70 0:0:0:0:0:ffff:48ff:dd46
72.255.221.71 0:0:0:0:0:ffff:48ff:dd47
72.255.221.72 0:0:0:0:0:ffff:48ff:dd48
72.255.221.73 0:0:0:0:0:ffff:48ff:dd49
72.255.221.74 0:0:0:0:0:ffff:48ff:dd4a
72.255.221.75 0:0:0:0:0:ffff:48ff:dd4b
72.255.221.76 0:0:0:0:0:ffff:48ff:dd4c
72.255.221.77 0:0:0:0:0:ffff:48ff:dd4d
72.255.221.78 0:0:0:0:0:ffff:48ff:dd4e
72.255.221.79 0:0:0:0:0:ffff:48ff:dd4f
72.255.221.80 0:0:0:0:0:ffff:48ff:dd50
72.255.221.81 0:0:0:0:0:ffff:48ff:dd51
72.255.221.82 0:0:0:0:0:ffff:48ff:dd52
72.255.221.83 0:0:0:0:0:ffff:48ff:dd53
72.255.221.84 0:0:0:0:0:ffff:48ff:dd54
72.255.221.85 0:0:0:0:0:ffff:48ff:dd55
72.255.221.86 0:0:0:0:0:ffff:48ff:dd56
72.255.221.87 0:0:0:0:0:ffff:48ff:dd57
72.255.221.88 0:0:0:0:0:ffff:48ff:dd58
72.255.221.89 0:0:0:0:0:ffff:48ff:dd59
72.255.221.90 0:0:0:0:0:ffff:48ff:dd5a
72.255.221.91 0:0:0:0:0:ffff:48ff:dd5b
72.255.221.92 0:0:0:0:0:ffff:48ff:dd5c
72.255.221.93 0:0:0:0:0:ffff:48ff:dd5d
72.255.221.94 0:0:0:0:0:ffff:48ff:dd5e
72.255.221.95 0:0:0:0:0:ffff:48ff:dd5f
72.255.221.96 0:0:0:0:0:ffff:48ff:dd60
72.255.221.97 0:0:0:0:0:ffff:48ff:dd61
72.255.221.98 0:0:0:0:0:ffff:48ff:dd62
72.255.221.99 0:0:0:0:0:ffff:48ff:dd63
72.255.221.100 0:0:0:0:0:ffff:48ff:dd64
72.255.221.101 0:0:0:0:0:ffff:48ff:dd65
72.255.221.102 0:0:0:0:0:ffff:48ff:dd66
72.255.221.103 0:0:0:0:0:ffff:48ff:dd67
72.255.221.104 0:0:0:0:0:ffff:48ff:dd68
72.255.221.105 0:0:0:0:0:ffff:48ff:dd69
72.255.221.106 0:0:0:0:0:ffff:48ff:dd6a
72.255.221.107 0:0:0:0:0:ffff:48ff:dd6b
72.255.221.108 0:0:0:0:0:ffff:48ff:dd6c
72.255.221.109 0:0:0:0:0:ffff:48ff:dd6d
72.255.221.110 0:0:0:0:0:ffff:48ff:dd6e
72.255.221.111 0:0:0:0:0:ffff:48ff:dd6f
72.255.221.112 0:0:0:0:0:ffff:48ff:dd70
72.255.221.113 0:0:0:0:0:ffff:48ff:dd71
72.255.221.114 0:0:0:0:0:ffff:48ff:dd72
72.255.221.115 0:0:0:0:0:ffff:48ff:dd73
72.255.221.116 0:0:0:0:0:ffff:48ff:dd74
72.255.221.117 0:0:0:0:0:ffff:48ff:dd75
72.255.221.118 0:0:0:0:0:ffff:48ff:dd76
72.255.221.119 0:0:0:0:0:ffff:48ff:dd77
72.255.221.120 0:0:0:0:0:ffff:48ff:dd78


72.255.221.121 0:0:0:0:0:ffff:48ff:dd79
72.255.221.122 0:0:0:0:0:ffff:48ff:dd7a
72.255.221.123 0:0:0:0:0:ffff:48ff:dd7b
72.255.221.124 0:0:0:0:0:ffff:48ff:dd7c
72.255.221.125 0:0:0:0:0:ffff:48ff:dd7d
72.255.221.126 0:0:0:0:0:ffff:48ff:dd7e
72.255.221.127 0:0:0:0:0:ffff:48ff:dd7f
72.255.221.128 0:0:0:0:0:ffff:48ff:dd80
72.255.221.129 0:0:0:0:0:ffff:48ff:dd81
72.255.221.130 0:0:0:0:0:ffff:48ff:dd82
72.255.221.131 0:0:0:0:0:ffff:48ff:dd83
72.255.221.132 0:0:0:0:0:ffff:48ff:dd84
72.255.221.133 0:0:0:0:0:ffff:48ff:dd85
72.255.221.134 0:0:0:0:0:ffff:48ff:dd86
72.255.221.135 0:0:0:0:0:ffff:48ff:dd87
72.255.221.136 0:0:0:0:0:ffff:48ff:dd88
72.255.221.137 0:0:0:0:0:ffff:48ff:dd89
72.255.221.138 0:0:0:0:0:ffff:48ff:dd8a
72.255.221.139 0:0:0:0:0:ffff:48ff:dd8b
72.255.221.140 0:0:0:0:0:ffff:48ff:dd8c
72.255.221.141 0:0:0:0:0:ffff:48ff:dd8d
72.255.221.142 0:0:0:0:0:ffff:48ff:dd8e
72.255.221.143 0:0:0:0:0:ffff:48ff:dd8f
72.255.221.144 0:0:0:0:0:ffff:48ff:dd90
72.255.221.145 0:0:0:0:0:ffff:48ff:dd91
72.255.221.146 0:0:0:0:0:ffff:48ff:dd92
72.255.221.147 0:0:0:0:0:ffff:48ff:dd93
72.255.221.148 0:0:0:0:0:ffff:48ff:dd94
72.255.221.149 0:0:0:0:0:ffff:48ff:dd95
72.255.221.150 0:0:0:0:0:ffff:48ff:dd96
72.255.221.151 0:0:0:0:0:ffff:48ff:dd97
72.255.221.152 0:0:0:0:0:ffff:48ff:dd98
72.255.221.153 0:0:0:0:0:ffff:48ff:dd99
72.255.221.154 0:0:0:0:0:ffff:48ff:dd9a
72.255.221.155 0:0:0:0:0:ffff:48ff:dd9b
72.255.221.156 0:0:0:0:0:ffff:48ff:dd9c
72.255.221.157 0:0:0:0:0:ffff:48ff:dd9d
72.255.221.158 0:0:0:0:0:ffff:48ff:dd9e
72.255.221.159 0:0:0:0:0:ffff:48ff:dd9f
72.255.221.160 0:0:0:0:0:ffff:48ff:dda0
72.255.221.161 0:0:0:0:0:ffff:48ff:dda1
72.255.221.162 0:0:0:0:0:ffff:48ff:dda2
72.255.221.163 0:0:0:0:0:ffff:48ff:dda3
72.255.221.164 0:0:0:0:0:ffff:48ff:dda4
72.255.221.165 0:0:0:0:0:ffff:48ff:dda5
72.255.221.166 0:0:0:0:0:ffff:48ff:dda6
72.255.221.167 0:0:0:0:0:ffff:48ff:dda7
72.255.221.168 0:0:0:0:0:ffff:48ff:dda8
72.255.221.169 0:0:0:0:0:ffff:48ff:dda9
72.255.221.170 0:0:0:0:0:ffff:48ff:ddaa
72.255.221.171 0:0:0:0:0:ffff:48ff:ddab
72.255.221.172 0:0:0:0:0:ffff:48ff:ddac
72.255.221.173 0:0:0:0:0:ffff:48ff:ddad
72.255.221.174 0:0:0:0:0:ffff:48ff:ddae
72.255.221.175 0:0:0:0:0:ffff:48ff:ddaf
72.255.221.176 0:0:0:0:0:ffff:48ff:ddb0
72.255.221.177 0:0:0:0:0:ffff:48ff:ddb1
72.255.221.178 0:0:0:0:0:ffff:48ff:ddb2
72.255.221.179 0:0:0:0:0:ffff:48ff:ddb3
72.255.221.180 0:0:0:0:0:ffff:48ff:ddb4


72.255.221.181 0:0:0:0:0:ffff:48ff:ddb5
72.255.221.182 0:0:0:0:0:ffff:48ff:ddb6
72.255.221.183 0:0:0:0:0:ffff:48ff:ddb7
72.255.221.184 0:0:0:0:0:ffff:48ff:ddb8
72.255.221.185 0:0:0:0:0:ffff:48ff:ddb9
72.255.221.186 0:0:0:0:0:ffff:48ff:ddba
72.255.221.187 0:0:0:0:0:ffff:48ff:ddbb
72.255.221.188 0:0:0:0:0:ffff:48ff:ddbc
72.255.221.189 0:0:0:0:0:ffff:48ff:ddbd
72.255.221.190 0:0:0:0:0:ffff:48ff:ddbe
72.255.221.191 0:0:0:0:0:ffff:48ff:ddbf
72.255.221.192 0:0:0:0:0:ffff:48ff:ddc0
72.255.221.193 0:0:0:0:0:ffff:48ff:ddc1
72.255.221.194 0:0:0:0:0:ffff:48ff:ddc2
72.255.221.195 0:0:0:0:0:ffff:48ff:ddc3
72.255.221.196 0:0:0:0:0:ffff:48ff:ddc4
72.255.221.197 0:0:0:0:0:ffff:48ff:ddc5
72.255.221.198 0:0:0:0:0:ffff:48ff:ddc6
72.255.221.199 0:0:0:0:0:ffff:48ff:ddc7
72.255.221.200 0:0:0:0:0:ffff:48ff:ddc8
72.255.221.201 0:0:0:0:0:ffff:48ff:ddc9
72.255.221.202 0:0:0:0:0:ffff:48ff:ddca
72.255.221.203 0:0:0:0:0:ffff:48ff:ddcb
72.255.221.204 0:0:0:0:0:ffff:48ff:ddcc
72.255.221.205 0:0:0:0:0:ffff:48ff:ddcd
72.255.221.206 0:0:0:0:0:ffff:48ff:ddce
72.255.221.207 0:0:0:0:0:ffff:48ff:ddcf
72.255.221.208 0:0:0:0:0:ffff:48ff:ddd0
72.255.221.209 0:0:0:0:0:ffff:48ff:ddd1
72.255.221.210 0:0:0:0:0:ffff:48ff:ddd2
72.255.221.211 0:0:0:0:0:ffff:48ff:ddd3
72.255.221.212 0:0:0:0:0:ffff:48ff:ddd4
72.255.221.213 0:0:0:0:0:ffff:48ff:ddd5
72.255.221.214 0:0:0:0:0:ffff:48ff:ddd6
72.255.221.215 0:0:0:0:0:ffff:48ff:ddd7
72.255.221.216 0:0:0:0:0:ffff:48ff:ddd8
72.255.221.217 0:0:0:0:0:ffff:48ff:ddd9
72.255.221.218 0:0:0:0:0:ffff:48ff:ddda
72.255.221.219 0:0:0:0:0:ffff:48ff:dddb
72.255.221.220 0:0:0:0:0:ffff:48ff:dddc
72.255.221.221 0:0:0:0:0:ffff:48ff:dddd
72.255.221.222 0:0:0:0:0:ffff:48ff:ddde
72.255.221.223 0:0:0:0:0:ffff:48ff:dddf
72.255.221.224 0:0:0:0:0:ffff:48ff:dde0
72.255.221.225 0:0:0:0:0:ffff:48ff:dde1
72.255.221.226 0:0:0:0:0:ffff:48ff:dde2
72.255.221.227 0:0:0:0:0:ffff:48ff:dde3
72.255.221.228 0:0:0:0:0:ffff:48ff:dde4
72.255.221.229 0:0:0:0:0:ffff:48ff:dde5
72.255.221.230 0:0:0:0:0:ffff:48ff:dde6
72.255.221.231 0:0:0:0:0:ffff:48ff:dde7
72.255.221.232 0:0:0:0:0:ffff:48ff:dde8
72.255.221.233 0:0:0:0:0:ffff:48ff:dde9
72.255.221.234 0:0:0:0:0:ffff:48ff:ddea
72.255.221.235 0:0:0:0:0:ffff:48ff:ddeb
72.255.221.236 0:0:0:0:0:ffff:48ff:ddec
72.255.221.237 0:0:0:0:0:ffff:48ff:dded
72.255.221.238 0:0:0:0:0:ffff:48ff:ddee
72.255.221.239 0:0:0:0:0:ffff:48ff:ddef
72.255.221.240 0:0:0:0:0:ffff:48ff:ddf0
72.255.221.241 0:0:0:0:0:ffff:48ff:ddf1
72.255.221.242 0:0:0:0:0:ffff:48ff:ddf2
72.255.221.243 0:0:0:0:0:ffff:48ff:ddf3
72.255.221.244 0:0:0:0:0:ffff:48ff:ddf4
72.255.221.245 0:0:0:0:0:ffff:48ff:ddf5
72.255.221.246 0:0:0:0:0:ffff:48ff:ddf6
72.255.221.247 0:0:0:0:0:ffff:48ff:ddf7
72.255.221.248 0:0:0:0:0:ffff:48ff:ddf8
72.255.221.249 0:0:0:0:0:ffff:48ff:ddf9
72.255.221.250 0:0:0:0:0:ffff:48ff:ddfa
72.255.221.251 0:0:0:0:0:ffff:48ff:ddfb
72.255.221.252 0:0:0:0:0:ffff:48ff:ddfc
72.255.221.253 0:0:0:0:0:ffff:48ff:ddfd
72.255.221.254 0:0:0:0:0:ffff:48ff:ddfe
72.255.221.255 0:0:0:0:0:ffff:48ff: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.