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
72.72.81.1 0:0:0:0:0:ffff:4848:5101
72.72.81.2 0:0:0:0:0:ffff:4848:5102
72.72.81.3 0:0:0:0:0:ffff:4848:5103
72.72.81.4 0:0:0:0:0:ffff:4848:5104
72.72.81.5 0:0:0:0:0:ffff:4848:5105
72.72.81.6 0:0:0:0:0:ffff:4848:5106
72.72.81.7 0:0:0:0:0:ffff:4848:5107
72.72.81.8 0:0:0:0:0:ffff:4848:5108
72.72.81.9 0:0:0:0:0:ffff:4848:5109
72.72.81.10 0:0:0:0:0:ffff:4848:510a
72.72.81.11 0:0:0:0:0:ffff:4848:510b
72.72.81.12 0:0:0:0:0:ffff:4848:510c
72.72.81.13 0:0:0:0:0:ffff:4848:510d
72.72.81.14 0:0:0:0:0:ffff:4848:510e
72.72.81.15 0:0:0:0:0:ffff:4848:510f
72.72.81.16 0:0:0:0:0:ffff:4848:5110
72.72.81.17 0:0:0:0:0:ffff:4848:5111
72.72.81.18 0:0:0:0:0:ffff:4848:5112
72.72.81.19 0:0:0:0:0:ffff:4848:5113
72.72.81.20 0:0:0:0:0:ffff:4848:5114
72.72.81.21 0:0:0:0:0:ffff:4848:5115
72.72.81.22 0:0:0:0:0:ffff:4848:5116
72.72.81.23 0:0:0:0:0:ffff:4848:5117
72.72.81.24 0:0:0:0:0:ffff:4848:5118
72.72.81.25 0:0:0:0:0:ffff:4848:5119
72.72.81.26 0:0:0:0:0:ffff:4848:511a
72.72.81.27 0:0:0:0:0:ffff:4848:511b
72.72.81.28 0:0:0:0:0:ffff:4848:511c
72.72.81.29 0:0:0:0:0:ffff:4848:511d
72.72.81.30 0:0:0:0:0:ffff:4848:511e
72.72.81.31 0:0:0:0:0:ffff:4848:511f
72.72.81.32 0:0:0:0:0:ffff:4848:5120
72.72.81.33 0:0:0:0:0:ffff:4848:5121
72.72.81.34 0:0:0:0:0:ffff:4848:5122
72.72.81.35 0:0:0:0:0:ffff:4848:5123
72.72.81.36 0:0:0:0:0:ffff:4848:5124
72.72.81.37 0:0:0:0:0:ffff:4848:5125
72.72.81.38 0:0:0:0:0:ffff:4848:5126
72.72.81.39 0:0:0:0:0:ffff:4848:5127
72.72.81.40 0:0:0:0:0:ffff:4848:5128
72.72.81.41 0:0:0:0:0:ffff:4848:5129
72.72.81.42 0:0:0:0:0:ffff:4848:512a
72.72.81.43 0:0:0:0:0:ffff:4848:512b
72.72.81.44 0:0:0:0:0:ffff:4848:512c
72.72.81.45 0:0:0:0:0:ffff:4848:512d
72.72.81.46 0:0:0:0:0:ffff:4848:512e
72.72.81.47 0:0:0:0:0:ffff:4848:512f
72.72.81.48 0:0:0:0:0:ffff:4848:5130
72.72.81.49 0:0:0:0:0:ffff:4848:5131
72.72.81.50 0:0:0:0:0:ffff:4848:5132
72.72.81.51 0:0:0:0:0:ffff:4848:5133
72.72.81.52 0:0:0:0:0:ffff:4848:5134
72.72.81.53 0:0:0:0:0:ffff:4848:5135
72.72.81.54 0:0:0:0:0:ffff:4848:5136
72.72.81.55 0:0:0:0:0:ffff:4848:5137
72.72.81.56 0:0:0:0:0:ffff:4848:5138
72.72.81.57 0:0:0:0:0:ffff:4848:5139
72.72.81.58 0:0:0:0:0:ffff:4848:513a
72.72.81.59 0:0:0:0:0:ffff:4848:513b
72.72.81.60 0:0:0:0:0:ffff:4848:513c


72.72.81.61 0:0:0:0:0:ffff:4848:513d
72.72.81.62 0:0:0:0:0:ffff:4848:513e
72.72.81.63 0:0:0:0:0:ffff:4848:513f
72.72.81.64 0:0:0:0:0:ffff:4848:5140
72.72.81.65 0:0:0:0:0:ffff:4848:5141
72.72.81.66 0:0:0:0:0:ffff:4848:5142
72.72.81.67 0:0:0:0:0:ffff:4848:5143
72.72.81.68 0:0:0:0:0:ffff:4848:5144
72.72.81.69 0:0:0:0:0:ffff:4848:5145
72.72.81.70 0:0:0:0:0:ffff:4848:5146
72.72.81.71 0:0:0:0:0:ffff:4848:5147
72.72.81.72 0:0:0:0:0:ffff:4848:5148
72.72.81.73 0:0:0:0:0:ffff:4848:5149
72.72.81.74 0:0:0:0:0:ffff:4848:514a
72.72.81.75 0:0:0:0:0:ffff:4848:514b
72.72.81.76 0:0:0:0:0:ffff:4848:514c
72.72.81.77 0:0:0:0:0:ffff:4848:514d
72.72.81.78 0:0:0:0:0:ffff:4848:514e
72.72.81.79 0:0:0:0:0:ffff:4848:514f
72.72.81.80 0:0:0:0:0:ffff:4848:5150
72.72.81.81 0:0:0:0:0:ffff:4848:5151
72.72.81.82 0:0:0:0:0:ffff:4848:5152
72.72.81.83 0:0:0:0:0:ffff:4848:5153
72.72.81.84 0:0:0:0:0:ffff:4848:5154
72.72.81.85 0:0:0:0:0:ffff:4848:5155
72.72.81.86 0:0:0:0:0:ffff:4848:5156
72.72.81.87 0:0:0:0:0:ffff:4848:5157
72.72.81.88 0:0:0:0:0:ffff:4848:5158
72.72.81.89 0:0:0:0:0:ffff:4848:5159
72.72.81.90 0:0:0:0:0:ffff:4848:515a
72.72.81.91 0:0:0:0:0:ffff:4848:515b
72.72.81.92 0:0:0:0:0:ffff:4848:515c
72.72.81.93 0:0:0:0:0:ffff:4848:515d
72.72.81.94 0:0:0:0:0:ffff:4848:515e
72.72.81.95 0:0:0:0:0:ffff:4848:515f
72.72.81.96 0:0:0:0:0:ffff:4848:5160
72.72.81.97 0:0:0:0:0:ffff:4848:5161
72.72.81.98 0:0:0:0:0:ffff:4848:5162
72.72.81.99 0:0:0:0:0:ffff:4848:5163
72.72.81.100 0:0:0:0:0:ffff:4848:5164
72.72.81.101 0:0:0:0:0:ffff:4848:5165
72.72.81.102 0:0:0:0:0:ffff:4848:5166
72.72.81.103 0:0:0:0:0:ffff:4848:5167
72.72.81.104 0:0:0:0:0:ffff:4848:5168
72.72.81.105 0:0:0:0:0:ffff:4848:5169
72.72.81.106 0:0:0:0:0:ffff:4848:516a
72.72.81.107 0:0:0:0:0:ffff:4848:516b
72.72.81.108 0:0:0:0:0:ffff:4848:516c
72.72.81.109 0:0:0:0:0:ffff:4848:516d
72.72.81.110 0:0:0:0:0:ffff:4848:516e
72.72.81.111 0:0:0:0:0:ffff:4848:516f
72.72.81.112 0:0:0:0:0:ffff:4848:5170
72.72.81.113 0:0:0:0:0:ffff:4848:5171
72.72.81.114 0:0:0:0:0:ffff:4848:5172
72.72.81.115 0:0:0:0:0:ffff:4848:5173
72.72.81.116 0:0:0:0:0:ffff:4848:5174
72.72.81.117 0:0:0:0:0:ffff:4848:5175
72.72.81.118 0:0:0:0:0:ffff:4848:5176
72.72.81.119 0:0:0:0:0:ffff:4848:5177
72.72.81.120 0:0:0:0:0:ffff:4848:5178


72.72.81.121 0:0:0:0:0:ffff:4848:5179
72.72.81.122 0:0:0:0:0:ffff:4848:517a
72.72.81.123 0:0:0:0:0:ffff:4848:517b
72.72.81.124 0:0:0:0:0:ffff:4848:517c
72.72.81.125 0:0:0:0:0:ffff:4848:517d
72.72.81.126 0:0:0:0:0:ffff:4848:517e
72.72.81.127 0:0:0:0:0:ffff:4848:517f
72.72.81.128 0:0:0:0:0:ffff:4848:5180
72.72.81.129 0:0:0:0:0:ffff:4848:5181
72.72.81.130 0:0:0:0:0:ffff:4848:5182
72.72.81.131 0:0:0:0:0:ffff:4848:5183
72.72.81.132 0:0:0:0:0:ffff:4848:5184
72.72.81.133 0:0:0:0:0:ffff:4848:5185
72.72.81.134 0:0:0:0:0:ffff:4848:5186
72.72.81.135 0:0:0:0:0:ffff:4848:5187
72.72.81.136 0:0:0:0:0:ffff:4848:5188
72.72.81.137 0:0:0:0:0:ffff:4848:5189
72.72.81.138 0:0:0:0:0:ffff:4848:518a
72.72.81.139 0:0:0:0:0:ffff:4848:518b
72.72.81.140 0:0:0:0:0:ffff:4848:518c
72.72.81.141 0:0:0:0:0:ffff:4848:518d
72.72.81.142 0:0:0:0:0:ffff:4848:518e
72.72.81.143 0:0:0:0:0:ffff:4848:518f
72.72.81.144 0:0:0:0:0:ffff:4848:5190
72.72.81.145 0:0:0:0:0:ffff:4848:5191
72.72.81.146 0:0:0:0:0:ffff:4848:5192
72.72.81.147 0:0:0:0:0:ffff:4848:5193
72.72.81.148 0:0:0:0:0:ffff:4848:5194
72.72.81.149 0:0:0:0:0:ffff:4848:5195
72.72.81.150 0:0:0:0:0:ffff:4848:5196
72.72.81.151 0:0:0:0:0:ffff:4848:5197
72.72.81.152 0:0:0:0:0:ffff:4848:5198
72.72.81.153 0:0:0:0:0:ffff:4848:5199
72.72.81.154 0:0:0:0:0:ffff:4848:519a
72.72.81.155 0:0:0:0:0:ffff:4848:519b
72.72.81.156 0:0:0:0:0:ffff:4848:519c
72.72.81.157 0:0:0:0:0:ffff:4848:519d
72.72.81.158 0:0:0:0:0:ffff:4848:519e
72.72.81.159 0:0:0:0:0:ffff:4848:519f
72.72.81.160 0:0:0:0:0:ffff:4848:51a0
72.72.81.161 0:0:0:0:0:ffff:4848:51a1
72.72.81.162 0:0:0:0:0:ffff:4848:51a2
72.72.81.163 0:0:0:0:0:ffff:4848:51a3
72.72.81.164 0:0:0:0:0:ffff:4848:51a4
72.72.81.165 0:0:0:0:0:ffff:4848:51a5
72.72.81.166 0:0:0:0:0:ffff:4848:51a6
72.72.81.167 0:0:0:0:0:ffff:4848:51a7
72.72.81.168 0:0:0:0:0:ffff:4848:51a8
72.72.81.169 0:0:0:0:0:ffff:4848:51a9
72.72.81.170 0:0:0:0:0:ffff:4848:51aa
72.72.81.171 0:0:0:0:0:ffff:4848:51ab
72.72.81.172 0:0:0:0:0:ffff:4848:51ac
72.72.81.173 0:0:0:0:0:ffff:4848:51ad
72.72.81.174 0:0:0:0:0:ffff:4848:51ae
72.72.81.175 0:0:0:0:0:ffff:4848:51af
72.72.81.176 0:0:0:0:0:ffff:4848:51b0
72.72.81.177 0:0:0:0:0:ffff:4848:51b1
72.72.81.178 0:0:0:0:0:ffff:4848:51b2
72.72.81.179 0:0:0:0:0:ffff:4848:51b3
72.72.81.180 0:0:0:0:0:ffff:4848:51b4


72.72.81.181 0:0:0:0:0:ffff:4848:51b5
72.72.81.182 0:0:0:0:0:ffff:4848:51b6
72.72.81.183 0:0:0:0:0:ffff:4848:51b7
72.72.81.184 0:0:0:0:0:ffff:4848:51b8
72.72.81.185 0:0:0:0:0:ffff:4848:51b9
72.72.81.186 0:0:0:0:0:ffff:4848:51ba
72.72.81.187 0:0:0:0:0:ffff:4848:51bb
72.72.81.188 0:0:0:0:0:ffff:4848:51bc
72.72.81.189 0:0:0:0:0:ffff:4848:51bd
72.72.81.190 0:0:0:0:0:ffff:4848:51be
72.72.81.191 0:0:0:0:0:ffff:4848:51bf
72.72.81.192 0:0:0:0:0:ffff:4848:51c0
72.72.81.193 0:0:0:0:0:ffff:4848:51c1
72.72.81.194 0:0:0:0:0:ffff:4848:51c2
72.72.81.195 0:0:0:0:0:ffff:4848:51c3
72.72.81.196 0:0:0:0:0:ffff:4848:51c4
72.72.81.197 0:0:0:0:0:ffff:4848:51c5
72.72.81.198 0:0:0:0:0:ffff:4848:51c6
72.72.81.199 0:0:0:0:0:ffff:4848:51c7
72.72.81.200 0:0:0:0:0:ffff:4848:51c8
72.72.81.201 0:0:0:0:0:ffff:4848:51c9
72.72.81.202 0:0:0:0:0:ffff:4848:51ca
72.72.81.203 0:0:0:0:0:ffff:4848:51cb
72.72.81.204 0:0:0:0:0:ffff:4848:51cc
72.72.81.205 0:0:0:0:0:ffff:4848:51cd
72.72.81.206 0:0:0:0:0:ffff:4848:51ce
72.72.81.207 0:0:0:0:0:ffff:4848:51cf
72.72.81.208 0:0:0:0:0:ffff:4848:51d0
72.72.81.209 0:0:0:0:0:ffff:4848:51d1
72.72.81.210 0:0:0:0:0:ffff:4848:51d2
72.72.81.211 0:0:0:0:0:ffff:4848:51d3
72.72.81.212 0:0:0:0:0:ffff:4848:51d4
72.72.81.213 0:0:0:0:0:ffff:4848:51d5
72.72.81.214 0:0:0:0:0:ffff:4848:51d6
72.72.81.215 0:0:0:0:0:ffff:4848:51d7
72.72.81.216 0:0:0:0:0:ffff:4848:51d8
72.72.81.217 0:0:0:0:0:ffff:4848:51d9
72.72.81.218 0:0:0:0:0:ffff:4848:51da
72.72.81.219 0:0:0:0:0:ffff:4848:51db
72.72.81.220 0:0:0:0:0:ffff:4848:51dc
72.72.81.221 0:0:0:0:0:ffff:4848:51dd
72.72.81.222 0:0:0:0:0:ffff:4848:51de
72.72.81.223 0:0:0:0:0:ffff:4848:51df
72.72.81.224 0:0:0:0:0:ffff:4848:51e0
72.72.81.225 0:0:0:0:0:ffff:4848:51e1
72.72.81.226 0:0:0:0:0:ffff:4848:51e2
72.72.81.227 0:0:0:0:0:ffff:4848:51e3
72.72.81.228 0:0:0:0:0:ffff:4848:51e4
72.72.81.229 0:0:0:0:0:ffff:4848:51e5
72.72.81.230 0:0:0:0:0:ffff:4848:51e6
72.72.81.231 0:0:0:0:0:ffff:4848:51e7
72.72.81.232 0:0:0:0:0:ffff:4848:51e8
72.72.81.233 0:0:0:0:0:ffff:4848:51e9
72.72.81.234 0:0:0:0:0:ffff:4848:51ea
72.72.81.235 0:0:0:0:0:ffff:4848:51eb
72.72.81.236 0:0:0:0:0:ffff:4848:51ec
72.72.81.237 0:0:0:0:0:ffff:4848:51ed
72.72.81.238 0:0:0:0:0:ffff:4848:51ee
72.72.81.239 0:0:0:0:0:ffff:4848:51ef
72.72.81.240 0:0:0:0:0:ffff:4848:51f0
72.72.81.241 0:0:0:0:0:ffff:4848:51f1
72.72.81.242 0:0:0:0:0:ffff:4848:51f2
72.72.81.243 0:0:0:0:0:ffff:4848:51f3
72.72.81.244 0:0:0:0:0:ffff:4848:51f4
72.72.81.245 0:0:0:0:0:ffff:4848:51f5
72.72.81.246 0:0:0:0:0:ffff:4848:51f6
72.72.81.247 0:0:0:0:0:ffff:4848:51f7
72.72.81.248 0:0:0:0:0:ffff:4848:51f8
72.72.81.249 0:0:0:0:0:ffff:4848:51f9
72.72.81.250 0:0:0:0:0:ffff:4848:51fa
72.72.81.251 0:0:0:0:0:ffff:4848:51fb
72.72.81.252 0:0:0:0:0:ffff:4848:51fc
72.72.81.253 0:0:0:0:0:ffff:4848:51fd
72.72.81.254 0:0:0:0:0:ffff:4848:51fe
72.72.81.255 0:0:0:0:0:ffff:4848:51ff


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.