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
139.12.71.1 0:0:0:0:0:ffff:8b0c:4701
139.12.71.2 0:0:0:0:0:ffff:8b0c:4702
139.12.71.3 0:0:0:0:0:ffff:8b0c:4703
139.12.71.4 0:0:0:0:0:ffff:8b0c:4704
139.12.71.5 0:0:0:0:0:ffff:8b0c:4705
139.12.71.6 0:0:0:0:0:ffff:8b0c:4706
139.12.71.7 0:0:0:0:0:ffff:8b0c:4707
139.12.71.8 0:0:0:0:0:ffff:8b0c:4708
139.12.71.9 0:0:0:0:0:ffff:8b0c:4709
139.12.71.10 0:0:0:0:0:ffff:8b0c:470a
139.12.71.11 0:0:0:0:0:ffff:8b0c:470b
139.12.71.12 0:0:0:0:0:ffff:8b0c:470c
139.12.71.13 0:0:0:0:0:ffff:8b0c:470d
139.12.71.14 0:0:0:0:0:ffff:8b0c:470e
139.12.71.15 0:0:0:0:0:ffff:8b0c:470f
139.12.71.16 0:0:0:0:0:ffff:8b0c:4710
139.12.71.17 0:0:0:0:0:ffff:8b0c:4711
139.12.71.18 0:0:0:0:0:ffff:8b0c:4712
139.12.71.19 0:0:0:0:0:ffff:8b0c:4713
139.12.71.20 0:0:0:0:0:ffff:8b0c:4714
139.12.71.21 0:0:0:0:0:ffff:8b0c:4715
139.12.71.22 0:0:0:0:0:ffff:8b0c:4716
139.12.71.23 0:0:0:0:0:ffff:8b0c:4717
139.12.71.24 0:0:0:0:0:ffff:8b0c:4718
139.12.71.25 0:0:0:0:0:ffff:8b0c:4719
139.12.71.26 0:0:0:0:0:ffff:8b0c:471a
139.12.71.27 0:0:0:0:0:ffff:8b0c:471b
139.12.71.28 0:0:0:0:0:ffff:8b0c:471c
139.12.71.29 0:0:0:0:0:ffff:8b0c:471d
139.12.71.30 0:0:0:0:0:ffff:8b0c:471e
139.12.71.31 0:0:0:0:0:ffff:8b0c:471f
139.12.71.32 0:0:0:0:0:ffff:8b0c:4720
139.12.71.33 0:0:0:0:0:ffff:8b0c:4721
139.12.71.34 0:0:0:0:0:ffff:8b0c:4722
139.12.71.35 0:0:0:0:0:ffff:8b0c:4723
139.12.71.36 0:0:0:0:0:ffff:8b0c:4724
139.12.71.37 0:0:0:0:0:ffff:8b0c:4725
139.12.71.38 0:0:0:0:0:ffff:8b0c:4726
139.12.71.39 0:0:0:0:0:ffff:8b0c:4727
139.12.71.40 0:0:0:0:0:ffff:8b0c:4728
139.12.71.41 0:0:0:0:0:ffff:8b0c:4729
139.12.71.42 0:0:0:0:0:ffff:8b0c:472a
139.12.71.43 0:0:0:0:0:ffff:8b0c:472b
139.12.71.44 0:0:0:0:0:ffff:8b0c:472c
139.12.71.45 0:0:0:0:0:ffff:8b0c:472d
139.12.71.46 0:0:0:0:0:ffff:8b0c:472e
139.12.71.47 0:0:0:0:0:ffff:8b0c:472f
139.12.71.48 0:0:0:0:0:ffff:8b0c:4730
139.12.71.49 0:0:0:0:0:ffff:8b0c:4731
139.12.71.50 0:0:0:0:0:ffff:8b0c:4732
139.12.71.51 0:0:0:0:0:ffff:8b0c:4733
139.12.71.52 0:0:0:0:0:ffff:8b0c:4734
139.12.71.53 0:0:0:0:0:ffff:8b0c:4735
139.12.71.54 0:0:0:0:0:ffff:8b0c:4736
139.12.71.55 0:0:0:0:0:ffff:8b0c:4737
139.12.71.56 0:0:0:0:0:ffff:8b0c:4738
139.12.71.57 0:0:0:0:0:ffff:8b0c:4739
139.12.71.58 0:0:0:0:0:ffff:8b0c:473a
139.12.71.59 0:0:0:0:0:ffff:8b0c:473b
139.12.71.60 0:0:0:0:0:ffff:8b0c:473c


139.12.71.61 0:0:0:0:0:ffff:8b0c:473d
139.12.71.62 0:0:0:0:0:ffff:8b0c:473e
139.12.71.63 0:0:0:0:0:ffff:8b0c:473f
139.12.71.64 0:0:0:0:0:ffff:8b0c:4740
139.12.71.65 0:0:0:0:0:ffff:8b0c:4741
139.12.71.66 0:0:0:0:0:ffff:8b0c:4742
139.12.71.67 0:0:0:0:0:ffff:8b0c:4743
139.12.71.68 0:0:0:0:0:ffff:8b0c:4744
139.12.71.69 0:0:0:0:0:ffff:8b0c:4745
139.12.71.70 0:0:0:0:0:ffff:8b0c:4746
139.12.71.71 0:0:0:0:0:ffff:8b0c:4747
139.12.71.72 0:0:0:0:0:ffff:8b0c:4748
139.12.71.73 0:0:0:0:0:ffff:8b0c:4749
139.12.71.74 0:0:0:0:0:ffff:8b0c:474a
139.12.71.75 0:0:0:0:0:ffff:8b0c:474b
139.12.71.76 0:0:0:0:0:ffff:8b0c:474c
139.12.71.77 0:0:0:0:0:ffff:8b0c:474d
139.12.71.78 0:0:0:0:0:ffff:8b0c:474e
139.12.71.79 0:0:0:0:0:ffff:8b0c:474f
139.12.71.80 0:0:0:0:0:ffff:8b0c:4750
139.12.71.81 0:0:0:0:0:ffff:8b0c:4751
139.12.71.82 0:0:0:0:0:ffff:8b0c:4752
139.12.71.83 0:0:0:0:0:ffff:8b0c:4753
139.12.71.84 0:0:0:0:0:ffff:8b0c:4754
139.12.71.85 0:0:0:0:0:ffff:8b0c:4755
139.12.71.86 0:0:0:0:0:ffff:8b0c:4756
139.12.71.87 0:0:0:0:0:ffff:8b0c:4757
139.12.71.88 0:0:0:0:0:ffff:8b0c:4758
139.12.71.89 0:0:0:0:0:ffff:8b0c:4759
139.12.71.90 0:0:0:0:0:ffff:8b0c:475a
139.12.71.91 0:0:0:0:0:ffff:8b0c:475b
139.12.71.92 0:0:0:0:0:ffff:8b0c:475c
139.12.71.93 0:0:0:0:0:ffff:8b0c:475d
139.12.71.94 0:0:0:0:0:ffff:8b0c:475e
139.12.71.95 0:0:0:0:0:ffff:8b0c:475f
139.12.71.96 0:0:0:0:0:ffff:8b0c:4760
139.12.71.97 0:0:0:0:0:ffff:8b0c:4761
139.12.71.98 0:0:0:0:0:ffff:8b0c:4762
139.12.71.99 0:0:0:0:0:ffff:8b0c:4763
139.12.71.100 0:0:0:0:0:ffff:8b0c:4764
139.12.71.101 0:0:0:0:0:ffff:8b0c:4765
139.12.71.102 0:0:0:0:0:ffff:8b0c:4766
139.12.71.103 0:0:0:0:0:ffff:8b0c:4767
139.12.71.104 0:0:0:0:0:ffff:8b0c:4768
139.12.71.105 0:0:0:0:0:ffff:8b0c:4769
139.12.71.106 0:0:0:0:0:ffff:8b0c:476a
139.12.71.107 0:0:0:0:0:ffff:8b0c:476b
139.12.71.108 0:0:0:0:0:ffff:8b0c:476c
139.12.71.109 0:0:0:0:0:ffff:8b0c:476d
139.12.71.110 0:0:0:0:0:ffff:8b0c:476e
139.12.71.111 0:0:0:0:0:ffff:8b0c:476f
139.12.71.112 0:0:0:0:0:ffff:8b0c:4770
139.12.71.113 0:0:0:0:0:ffff:8b0c:4771
139.12.71.114 0:0:0:0:0:ffff:8b0c:4772
139.12.71.115 0:0:0:0:0:ffff:8b0c:4773
139.12.71.116 0:0:0:0:0:ffff:8b0c:4774
139.12.71.117 0:0:0:0:0:ffff:8b0c:4775
139.12.71.118 0:0:0:0:0:ffff:8b0c:4776
139.12.71.119 0:0:0:0:0:ffff:8b0c:4777
139.12.71.120 0:0:0:0:0:ffff:8b0c:4778


139.12.71.121 0:0:0:0:0:ffff:8b0c:4779
139.12.71.122 0:0:0:0:0:ffff:8b0c:477a
139.12.71.123 0:0:0:0:0:ffff:8b0c:477b
139.12.71.124 0:0:0:0:0:ffff:8b0c:477c
139.12.71.125 0:0:0:0:0:ffff:8b0c:477d
139.12.71.126 0:0:0:0:0:ffff:8b0c:477e
139.12.71.127 0:0:0:0:0:ffff:8b0c:477f
139.12.71.128 0:0:0:0:0:ffff:8b0c:4780
139.12.71.129 0:0:0:0:0:ffff:8b0c:4781
139.12.71.130 0:0:0:0:0:ffff:8b0c:4782
139.12.71.131 0:0:0:0:0:ffff:8b0c:4783
139.12.71.132 0:0:0:0:0:ffff:8b0c:4784
139.12.71.133 0:0:0:0:0:ffff:8b0c:4785
139.12.71.134 0:0:0:0:0:ffff:8b0c:4786
139.12.71.135 0:0:0:0:0:ffff:8b0c:4787
139.12.71.136 0:0:0:0:0:ffff:8b0c:4788
139.12.71.137 0:0:0:0:0:ffff:8b0c:4789
139.12.71.138 0:0:0:0:0:ffff:8b0c:478a
139.12.71.139 0:0:0:0:0:ffff:8b0c:478b
139.12.71.140 0:0:0:0:0:ffff:8b0c:478c
139.12.71.141 0:0:0:0:0:ffff:8b0c:478d
139.12.71.142 0:0:0:0:0:ffff:8b0c:478e
139.12.71.143 0:0:0:0:0:ffff:8b0c:478f
139.12.71.144 0:0:0:0:0:ffff:8b0c:4790
139.12.71.145 0:0:0:0:0:ffff:8b0c:4791
139.12.71.146 0:0:0:0:0:ffff:8b0c:4792
139.12.71.147 0:0:0:0:0:ffff:8b0c:4793
139.12.71.148 0:0:0:0:0:ffff:8b0c:4794
139.12.71.149 0:0:0:0:0:ffff:8b0c:4795
139.12.71.150 0:0:0:0:0:ffff:8b0c:4796
139.12.71.151 0:0:0:0:0:ffff:8b0c:4797
139.12.71.152 0:0:0:0:0:ffff:8b0c:4798
139.12.71.153 0:0:0:0:0:ffff:8b0c:4799
139.12.71.154 0:0:0:0:0:ffff:8b0c:479a
139.12.71.155 0:0:0:0:0:ffff:8b0c:479b
139.12.71.156 0:0:0:0:0:ffff:8b0c:479c
139.12.71.157 0:0:0:0:0:ffff:8b0c:479d
139.12.71.158 0:0:0:0:0:ffff:8b0c:479e
139.12.71.159 0:0:0:0:0:ffff:8b0c:479f
139.12.71.160 0:0:0:0:0:ffff:8b0c:47a0
139.12.71.161 0:0:0:0:0:ffff:8b0c:47a1
139.12.71.162 0:0:0:0:0:ffff:8b0c:47a2
139.12.71.163 0:0:0:0:0:ffff:8b0c:47a3
139.12.71.164 0:0:0:0:0:ffff:8b0c:47a4
139.12.71.165 0:0:0:0:0:ffff:8b0c:47a5
139.12.71.166 0:0:0:0:0:ffff:8b0c:47a6
139.12.71.167 0:0:0:0:0:ffff:8b0c:47a7
139.12.71.168 0:0:0:0:0:ffff:8b0c:47a8
139.12.71.169 0:0:0:0:0:ffff:8b0c:47a9
139.12.71.170 0:0:0:0:0:ffff:8b0c:47aa
139.12.71.171 0:0:0:0:0:ffff:8b0c:47ab
139.12.71.172 0:0:0:0:0:ffff:8b0c:47ac
139.12.71.173 0:0:0:0:0:ffff:8b0c:47ad
139.12.71.174 0:0:0:0:0:ffff:8b0c:47ae
139.12.71.175 0:0:0:0:0:ffff:8b0c:47af
139.12.71.176 0:0:0:0:0:ffff:8b0c:47b0
139.12.71.177 0:0:0:0:0:ffff:8b0c:47b1
139.12.71.178 0:0:0:0:0:ffff:8b0c:47b2
139.12.71.179 0:0:0:0:0:ffff:8b0c:47b3
139.12.71.180 0:0:0:0:0:ffff:8b0c:47b4


139.12.71.181 0:0:0:0:0:ffff:8b0c:47b5
139.12.71.182 0:0:0:0:0:ffff:8b0c:47b6
139.12.71.183 0:0:0:0:0:ffff:8b0c:47b7
139.12.71.184 0:0:0:0:0:ffff:8b0c:47b8
139.12.71.185 0:0:0:0:0:ffff:8b0c:47b9
139.12.71.186 0:0:0:0:0:ffff:8b0c:47ba
139.12.71.187 0:0:0:0:0:ffff:8b0c:47bb
139.12.71.188 0:0:0:0:0:ffff:8b0c:47bc
139.12.71.189 0:0:0:0:0:ffff:8b0c:47bd
139.12.71.190 0:0:0:0:0:ffff:8b0c:47be
139.12.71.191 0:0:0:0:0:ffff:8b0c:47bf
139.12.71.192 0:0:0:0:0:ffff:8b0c:47c0
139.12.71.193 0:0:0:0:0:ffff:8b0c:47c1
139.12.71.194 0:0:0:0:0:ffff:8b0c:47c2
139.12.71.195 0:0:0:0:0:ffff:8b0c:47c3
139.12.71.196 0:0:0:0:0:ffff:8b0c:47c4
139.12.71.197 0:0:0:0:0:ffff:8b0c:47c5
139.12.71.198 0:0:0:0:0:ffff:8b0c:47c6
139.12.71.199 0:0:0:0:0:ffff:8b0c:47c7
139.12.71.200 0:0:0:0:0:ffff:8b0c:47c8
139.12.71.201 0:0:0:0:0:ffff:8b0c:47c9
139.12.71.202 0:0:0:0:0:ffff:8b0c:47ca
139.12.71.203 0:0:0:0:0:ffff:8b0c:47cb
139.12.71.204 0:0:0:0:0:ffff:8b0c:47cc
139.12.71.205 0:0:0:0:0:ffff:8b0c:47cd
139.12.71.206 0:0:0:0:0:ffff:8b0c:47ce
139.12.71.207 0:0:0:0:0:ffff:8b0c:47cf
139.12.71.208 0:0:0:0:0:ffff:8b0c:47d0
139.12.71.209 0:0:0:0:0:ffff:8b0c:47d1
139.12.71.210 0:0:0:0:0:ffff:8b0c:47d2
139.12.71.211 0:0:0:0:0:ffff:8b0c:47d3
139.12.71.212 0:0:0:0:0:ffff:8b0c:47d4
139.12.71.213 0:0:0:0:0:ffff:8b0c:47d5
139.12.71.214 0:0:0:0:0:ffff:8b0c:47d6
139.12.71.215 0:0:0:0:0:ffff:8b0c:47d7
139.12.71.216 0:0:0:0:0:ffff:8b0c:47d8
139.12.71.217 0:0:0:0:0:ffff:8b0c:47d9
139.12.71.218 0:0:0:0:0:ffff:8b0c:47da
139.12.71.219 0:0:0:0:0:ffff:8b0c:47db
139.12.71.220 0:0:0:0:0:ffff:8b0c:47dc
139.12.71.221 0:0:0:0:0:ffff:8b0c:47dd
139.12.71.222 0:0:0:0:0:ffff:8b0c:47de
139.12.71.223 0:0:0:0:0:ffff:8b0c:47df
139.12.71.224 0:0:0:0:0:ffff:8b0c:47e0
139.12.71.225 0:0:0:0:0:ffff:8b0c:47e1
139.12.71.226 0:0:0:0:0:ffff:8b0c:47e2
139.12.71.227 0:0:0:0:0:ffff:8b0c:47e3
139.12.71.228 0:0:0:0:0:ffff:8b0c:47e4
139.12.71.229 0:0:0:0:0:ffff:8b0c:47e5
139.12.71.230 0:0:0:0:0:ffff:8b0c:47e6
139.12.71.231 0:0:0:0:0:ffff:8b0c:47e7
139.12.71.232 0:0:0:0:0:ffff:8b0c:47e8
139.12.71.233 0:0:0:0:0:ffff:8b0c:47e9
139.12.71.234 0:0:0:0:0:ffff:8b0c:47ea
139.12.71.235 0:0:0:0:0:ffff:8b0c:47eb
139.12.71.236 0:0:0:0:0:ffff:8b0c:47ec
139.12.71.237 0:0:0:0:0:ffff:8b0c:47ed
139.12.71.238 0:0:0:0:0:ffff:8b0c:47ee
139.12.71.239 0:0:0:0:0:ffff:8b0c:47ef
139.12.71.240 0:0:0:0:0:ffff:8b0c:47f0
139.12.71.241 0:0:0:0:0:ffff:8b0c:47f1
139.12.71.242 0:0:0:0:0:ffff:8b0c:47f2
139.12.71.243 0:0:0:0:0:ffff:8b0c:47f3
139.12.71.244 0:0:0:0:0:ffff:8b0c:47f4
139.12.71.245 0:0:0:0:0:ffff:8b0c:47f5
139.12.71.246 0:0:0:0:0:ffff:8b0c:47f6
139.12.71.247 0:0:0:0:0:ffff:8b0c:47f7
139.12.71.248 0:0:0:0:0:ffff:8b0c:47f8
139.12.71.249 0:0:0:0:0:ffff:8b0c:47f9
139.12.71.250 0:0:0:0:0:ffff:8b0c:47fa
139.12.71.251 0:0:0:0:0:ffff:8b0c:47fb
139.12.71.252 0:0:0:0:0:ffff:8b0c:47fc
139.12.71.253 0:0:0:0:0:ffff:8b0c:47fd
139.12.71.254 0:0:0:0:0:ffff:8b0c:47fe
139.12.71.255 0:0:0:0:0:ffff:8b0c:47ff


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.