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
78.123.72.1 0:0:0:0:0:ffff:4e7b:4801
78.123.72.2 0:0:0:0:0:ffff:4e7b:4802
78.123.72.3 0:0:0:0:0:ffff:4e7b:4803
78.123.72.4 0:0:0:0:0:ffff:4e7b:4804
78.123.72.5 0:0:0:0:0:ffff:4e7b:4805
78.123.72.6 0:0:0:0:0:ffff:4e7b:4806
78.123.72.7 0:0:0:0:0:ffff:4e7b:4807
78.123.72.8 0:0:0:0:0:ffff:4e7b:4808
78.123.72.9 0:0:0:0:0:ffff:4e7b:4809
78.123.72.10 0:0:0:0:0:ffff:4e7b:480a
78.123.72.11 0:0:0:0:0:ffff:4e7b:480b
78.123.72.12 0:0:0:0:0:ffff:4e7b:480c
78.123.72.13 0:0:0:0:0:ffff:4e7b:480d
78.123.72.14 0:0:0:0:0:ffff:4e7b:480e
78.123.72.15 0:0:0:0:0:ffff:4e7b:480f
78.123.72.16 0:0:0:0:0:ffff:4e7b:4810
78.123.72.17 0:0:0:0:0:ffff:4e7b:4811
78.123.72.18 0:0:0:0:0:ffff:4e7b:4812
78.123.72.19 0:0:0:0:0:ffff:4e7b:4813
78.123.72.20 0:0:0:0:0:ffff:4e7b:4814
78.123.72.21 0:0:0:0:0:ffff:4e7b:4815
78.123.72.22 0:0:0:0:0:ffff:4e7b:4816
78.123.72.23 0:0:0:0:0:ffff:4e7b:4817
78.123.72.24 0:0:0:0:0:ffff:4e7b:4818
78.123.72.25 0:0:0:0:0:ffff:4e7b:4819
78.123.72.26 0:0:0:0:0:ffff:4e7b:481a
78.123.72.27 0:0:0:0:0:ffff:4e7b:481b
78.123.72.28 0:0:0:0:0:ffff:4e7b:481c
78.123.72.29 0:0:0:0:0:ffff:4e7b:481d
78.123.72.30 0:0:0:0:0:ffff:4e7b:481e
78.123.72.31 0:0:0:0:0:ffff:4e7b:481f
78.123.72.32 0:0:0:0:0:ffff:4e7b:4820
78.123.72.33 0:0:0:0:0:ffff:4e7b:4821
78.123.72.34 0:0:0:0:0:ffff:4e7b:4822
78.123.72.35 0:0:0:0:0:ffff:4e7b:4823
78.123.72.36 0:0:0:0:0:ffff:4e7b:4824
78.123.72.37 0:0:0:0:0:ffff:4e7b:4825
78.123.72.38 0:0:0:0:0:ffff:4e7b:4826
78.123.72.39 0:0:0:0:0:ffff:4e7b:4827
78.123.72.40 0:0:0:0:0:ffff:4e7b:4828
78.123.72.41 0:0:0:0:0:ffff:4e7b:4829
78.123.72.42 0:0:0:0:0:ffff:4e7b:482a
78.123.72.43 0:0:0:0:0:ffff:4e7b:482b
78.123.72.44 0:0:0:0:0:ffff:4e7b:482c
78.123.72.45 0:0:0:0:0:ffff:4e7b:482d
78.123.72.46 0:0:0:0:0:ffff:4e7b:482e
78.123.72.47 0:0:0:0:0:ffff:4e7b:482f
78.123.72.48 0:0:0:0:0:ffff:4e7b:4830
78.123.72.49 0:0:0:0:0:ffff:4e7b:4831
78.123.72.50 0:0:0:0:0:ffff:4e7b:4832
78.123.72.51 0:0:0:0:0:ffff:4e7b:4833
78.123.72.52 0:0:0:0:0:ffff:4e7b:4834
78.123.72.53 0:0:0:0:0:ffff:4e7b:4835
78.123.72.54 0:0:0:0:0:ffff:4e7b:4836
78.123.72.55 0:0:0:0:0:ffff:4e7b:4837
78.123.72.56 0:0:0:0:0:ffff:4e7b:4838
78.123.72.57 0:0:0:0:0:ffff:4e7b:4839
78.123.72.58 0:0:0:0:0:ffff:4e7b:483a
78.123.72.59 0:0:0:0:0:ffff:4e7b:483b
78.123.72.60 0:0:0:0:0:ffff:4e7b:483c


78.123.72.61 0:0:0:0:0:ffff:4e7b:483d
78.123.72.62 0:0:0:0:0:ffff:4e7b:483e
78.123.72.63 0:0:0:0:0:ffff:4e7b:483f
78.123.72.64 0:0:0:0:0:ffff:4e7b:4840
78.123.72.65 0:0:0:0:0:ffff:4e7b:4841
78.123.72.66 0:0:0:0:0:ffff:4e7b:4842
78.123.72.67 0:0:0:0:0:ffff:4e7b:4843
78.123.72.68 0:0:0:0:0:ffff:4e7b:4844
78.123.72.69 0:0:0:0:0:ffff:4e7b:4845
78.123.72.70 0:0:0:0:0:ffff:4e7b:4846
78.123.72.71 0:0:0:0:0:ffff:4e7b:4847
78.123.72.72 0:0:0:0:0:ffff:4e7b:4848
78.123.72.73 0:0:0:0:0:ffff:4e7b:4849
78.123.72.74 0:0:0:0:0:ffff:4e7b:484a
78.123.72.75 0:0:0:0:0:ffff:4e7b:484b
78.123.72.76 0:0:0:0:0:ffff:4e7b:484c
78.123.72.77 0:0:0:0:0:ffff:4e7b:484d
78.123.72.78 0:0:0:0:0:ffff:4e7b:484e
78.123.72.79 0:0:0:0:0:ffff:4e7b:484f
78.123.72.80 0:0:0:0:0:ffff:4e7b:4850
78.123.72.81 0:0:0:0:0:ffff:4e7b:4851
78.123.72.82 0:0:0:0:0:ffff:4e7b:4852
78.123.72.83 0:0:0:0:0:ffff:4e7b:4853
78.123.72.84 0:0:0:0:0:ffff:4e7b:4854
78.123.72.85 0:0:0:0:0:ffff:4e7b:4855
78.123.72.86 0:0:0:0:0:ffff:4e7b:4856
78.123.72.87 0:0:0:0:0:ffff:4e7b:4857
78.123.72.88 0:0:0:0:0:ffff:4e7b:4858
78.123.72.89 0:0:0:0:0:ffff:4e7b:4859
78.123.72.90 0:0:0:0:0:ffff:4e7b:485a
78.123.72.91 0:0:0:0:0:ffff:4e7b:485b
78.123.72.92 0:0:0:0:0:ffff:4e7b:485c
78.123.72.93 0:0:0:0:0:ffff:4e7b:485d
78.123.72.94 0:0:0:0:0:ffff:4e7b:485e
78.123.72.95 0:0:0:0:0:ffff:4e7b:485f
78.123.72.96 0:0:0:0:0:ffff:4e7b:4860
78.123.72.97 0:0:0:0:0:ffff:4e7b:4861
78.123.72.98 0:0:0:0:0:ffff:4e7b:4862
78.123.72.99 0:0:0:0:0:ffff:4e7b:4863
78.123.72.100 0:0:0:0:0:ffff:4e7b:4864
78.123.72.101 0:0:0:0:0:ffff:4e7b:4865
78.123.72.102 0:0:0:0:0:ffff:4e7b:4866
78.123.72.103 0:0:0:0:0:ffff:4e7b:4867
78.123.72.104 0:0:0:0:0:ffff:4e7b:4868
78.123.72.105 0:0:0:0:0:ffff:4e7b:4869
78.123.72.106 0:0:0:0:0:ffff:4e7b:486a
78.123.72.107 0:0:0:0:0:ffff:4e7b:486b
78.123.72.108 0:0:0:0:0:ffff:4e7b:486c
78.123.72.109 0:0:0:0:0:ffff:4e7b:486d
78.123.72.110 0:0:0:0:0:ffff:4e7b:486e
78.123.72.111 0:0:0:0:0:ffff:4e7b:486f
78.123.72.112 0:0:0:0:0:ffff:4e7b:4870
78.123.72.113 0:0:0:0:0:ffff:4e7b:4871
78.123.72.114 0:0:0:0:0:ffff:4e7b:4872
78.123.72.115 0:0:0:0:0:ffff:4e7b:4873
78.123.72.116 0:0:0:0:0:ffff:4e7b:4874
78.123.72.117 0:0:0:0:0:ffff:4e7b:4875
78.123.72.118 0:0:0:0:0:ffff:4e7b:4876
78.123.72.119 0:0:0:0:0:ffff:4e7b:4877
78.123.72.120 0:0:0:0:0:ffff:4e7b:4878


78.123.72.121 0:0:0:0:0:ffff:4e7b:4879
78.123.72.122 0:0:0:0:0:ffff:4e7b:487a
78.123.72.123 0:0:0:0:0:ffff:4e7b:487b
78.123.72.124 0:0:0:0:0:ffff:4e7b:487c
78.123.72.125 0:0:0:0:0:ffff:4e7b:487d
78.123.72.126 0:0:0:0:0:ffff:4e7b:487e
78.123.72.127 0:0:0:0:0:ffff:4e7b:487f
78.123.72.128 0:0:0:0:0:ffff:4e7b:4880
78.123.72.129 0:0:0:0:0:ffff:4e7b:4881
78.123.72.130 0:0:0:0:0:ffff:4e7b:4882
78.123.72.131 0:0:0:0:0:ffff:4e7b:4883
78.123.72.132 0:0:0:0:0:ffff:4e7b:4884
78.123.72.133 0:0:0:0:0:ffff:4e7b:4885
78.123.72.134 0:0:0:0:0:ffff:4e7b:4886
78.123.72.135 0:0:0:0:0:ffff:4e7b:4887
78.123.72.136 0:0:0:0:0:ffff:4e7b:4888
78.123.72.137 0:0:0:0:0:ffff:4e7b:4889
78.123.72.138 0:0:0:0:0:ffff:4e7b:488a
78.123.72.139 0:0:0:0:0:ffff:4e7b:488b
78.123.72.140 0:0:0:0:0:ffff:4e7b:488c
78.123.72.141 0:0:0:0:0:ffff:4e7b:488d
78.123.72.142 0:0:0:0:0:ffff:4e7b:488e
78.123.72.143 0:0:0:0:0:ffff:4e7b:488f
78.123.72.144 0:0:0:0:0:ffff:4e7b:4890
78.123.72.145 0:0:0:0:0:ffff:4e7b:4891
78.123.72.146 0:0:0:0:0:ffff:4e7b:4892
78.123.72.147 0:0:0:0:0:ffff:4e7b:4893
78.123.72.148 0:0:0:0:0:ffff:4e7b:4894
78.123.72.149 0:0:0:0:0:ffff:4e7b:4895
78.123.72.150 0:0:0:0:0:ffff:4e7b:4896
78.123.72.151 0:0:0:0:0:ffff:4e7b:4897
78.123.72.152 0:0:0:0:0:ffff:4e7b:4898
78.123.72.153 0:0:0:0:0:ffff:4e7b:4899
78.123.72.154 0:0:0:0:0:ffff:4e7b:489a
78.123.72.155 0:0:0:0:0:ffff:4e7b:489b
78.123.72.156 0:0:0:0:0:ffff:4e7b:489c
78.123.72.157 0:0:0:0:0:ffff:4e7b:489d
78.123.72.158 0:0:0:0:0:ffff:4e7b:489e
78.123.72.159 0:0:0:0:0:ffff:4e7b:489f
78.123.72.160 0:0:0:0:0:ffff:4e7b:48a0
78.123.72.161 0:0:0:0:0:ffff:4e7b:48a1
78.123.72.162 0:0:0:0:0:ffff:4e7b:48a2
78.123.72.163 0:0:0:0:0:ffff:4e7b:48a3
78.123.72.164 0:0:0:0:0:ffff:4e7b:48a4
78.123.72.165 0:0:0:0:0:ffff:4e7b:48a5
78.123.72.166 0:0:0:0:0:ffff:4e7b:48a6
78.123.72.167 0:0:0:0:0:ffff:4e7b:48a7
78.123.72.168 0:0:0:0:0:ffff:4e7b:48a8
78.123.72.169 0:0:0:0:0:ffff:4e7b:48a9
78.123.72.170 0:0:0:0:0:ffff:4e7b:48aa
78.123.72.171 0:0:0:0:0:ffff:4e7b:48ab
78.123.72.172 0:0:0:0:0:ffff:4e7b:48ac
78.123.72.173 0:0:0:0:0:ffff:4e7b:48ad
78.123.72.174 0:0:0:0:0:ffff:4e7b:48ae
78.123.72.175 0:0:0:0:0:ffff:4e7b:48af
78.123.72.176 0:0:0:0:0:ffff:4e7b:48b0
78.123.72.177 0:0:0:0:0:ffff:4e7b:48b1
78.123.72.178 0:0:0:0:0:ffff:4e7b:48b2
78.123.72.179 0:0:0:0:0:ffff:4e7b:48b3
78.123.72.180 0:0:0:0:0:ffff:4e7b:48b4


78.123.72.181 0:0:0:0:0:ffff:4e7b:48b5
78.123.72.182 0:0:0:0:0:ffff:4e7b:48b6
78.123.72.183 0:0:0:0:0:ffff:4e7b:48b7
78.123.72.184 0:0:0:0:0:ffff:4e7b:48b8
78.123.72.185 0:0:0:0:0:ffff:4e7b:48b9
78.123.72.186 0:0:0:0:0:ffff:4e7b:48ba
78.123.72.187 0:0:0:0:0:ffff:4e7b:48bb
78.123.72.188 0:0:0:0:0:ffff:4e7b:48bc
78.123.72.189 0:0:0:0:0:ffff:4e7b:48bd
78.123.72.190 0:0:0:0:0:ffff:4e7b:48be
78.123.72.191 0:0:0:0:0:ffff:4e7b:48bf
78.123.72.192 0:0:0:0:0:ffff:4e7b:48c0
78.123.72.193 0:0:0:0:0:ffff:4e7b:48c1
78.123.72.194 0:0:0:0:0:ffff:4e7b:48c2
78.123.72.195 0:0:0:0:0:ffff:4e7b:48c3
78.123.72.196 0:0:0:0:0:ffff:4e7b:48c4
78.123.72.197 0:0:0:0:0:ffff:4e7b:48c5
78.123.72.198 0:0:0:0:0:ffff:4e7b:48c6
78.123.72.199 0:0:0:0:0:ffff:4e7b:48c7
78.123.72.200 0:0:0:0:0:ffff:4e7b:48c8
78.123.72.201 0:0:0:0:0:ffff:4e7b:48c9
78.123.72.202 0:0:0:0:0:ffff:4e7b:48ca
78.123.72.203 0:0:0:0:0:ffff:4e7b:48cb
78.123.72.204 0:0:0:0:0:ffff:4e7b:48cc
78.123.72.205 0:0:0:0:0:ffff:4e7b:48cd
78.123.72.206 0:0:0:0:0:ffff:4e7b:48ce
78.123.72.207 0:0:0:0:0:ffff:4e7b:48cf
78.123.72.208 0:0:0:0:0:ffff:4e7b:48d0
78.123.72.209 0:0:0:0:0:ffff:4e7b:48d1
78.123.72.210 0:0:0:0:0:ffff:4e7b:48d2
78.123.72.211 0:0:0:0:0:ffff:4e7b:48d3
78.123.72.212 0:0:0:0:0:ffff:4e7b:48d4
78.123.72.213 0:0:0:0:0:ffff:4e7b:48d5
78.123.72.214 0:0:0:0:0:ffff:4e7b:48d6
78.123.72.215 0:0:0:0:0:ffff:4e7b:48d7
78.123.72.216 0:0:0:0:0:ffff:4e7b:48d8
78.123.72.217 0:0:0:0:0:ffff:4e7b:48d9
78.123.72.218 0:0:0:0:0:ffff:4e7b:48da
78.123.72.219 0:0:0:0:0:ffff:4e7b:48db
78.123.72.220 0:0:0:0:0:ffff:4e7b:48dc
78.123.72.221 0:0:0:0:0:ffff:4e7b:48dd
78.123.72.222 0:0:0:0:0:ffff:4e7b:48de
78.123.72.223 0:0:0:0:0:ffff:4e7b:48df
78.123.72.224 0:0:0:0:0:ffff:4e7b:48e0
78.123.72.225 0:0:0:0:0:ffff:4e7b:48e1
78.123.72.226 0:0:0:0:0:ffff:4e7b:48e2
78.123.72.227 0:0:0:0:0:ffff:4e7b:48e3
78.123.72.228 0:0:0:0:0:ffff:4e7b:48e4
78.123.72.229 0:0:0:0:0:ffff:4e7b:48e5
78.123.72.230 0:0:0:0:0:ffff:4e7b:48e6
78.123.72.231 0:0:0:0:0:ffff:4e7b:48e7
78.123.72.232 0:0:0:0:0:ffff:4e7b:48e8
78.123.72.233 0:0:0:0:0:ffff:4e7b:48e9
78.123.72.234 0:0:0:0:0:ffff:4e7b:48ea
78.123.72.235 0:0:0:0:0:ffff:4e7b:48eb
78.123.72.236 0:0:0:0:0:ffff:4e7b:48ec
78.123.72.237 0:0:0:0:0:ffff:4e7b:48ed
78.123.72.238 0:0:0:0:0:ffff:4e7b:48ee
78.123.72.239 0:0:0:0:0:ffff:4e7b:48ef
78.123.72.240 0:0:0:0:0:ffff:4e7b:48f0
78.123.72.241 0:0:0:0:0:ffff:4e7b:48f1
78.123.72.242 0:0:0:0:0:ffff:4e7b:48f2
78.123.72.243 0:0:0:0:0:ffff:4e7b:48f3
78.123.72.244 0:0:0:0:0:ffff:4e7b:48f4
78.123.72.245 0:0:0:0:0:ffff:4e7b:48f5
78.123.72.246 0:0:0:0:0:ffff:4e7b:48f6
78.123.72.247 0:0:0:0:0:ffff:4e7b:48f7
78.123.72.248 0:0:0:0:0:ffff:4e7b:48f8
78.123.72.249 0:0:0:0:0:ffff:4e7b:48f9
78.123.72.250 0:0:0:0:0:ffff:4e7b:48fa
78.123.72.251 0:0:0:0:0:ffff:4e7b:48fb
78.123.72.252 0:0:0:0:0:ffff:4e7b:48fc
78.123.72.253 0:0:0:0:0:ffff:4e7b:48fd
78.123.72.254 0:0:0:0:0:ffff:4e7b:48fe
78.123.72.255 0:0:0:0:0:ffff:4e7b:48ff


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.