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
139.12.56.1 0:0:0:0:0:ffff:8b0c:3801
139.12.56.2 0:0:0:0:0:ffff:8b0c:3802
139.12.56.3 0:0:0:0:0:ffff:8b0c:3803
139.12.56.4 0:0:0:0:0:ffff:8b0c:3804
139.12.56.5 0:0:0:0:0:ffff:8b0c:3805
139.12.56.6 0:0:0:0:0:ffff:8b0c:3806
139.12.56.7 0:0:0:0:0:ffff:8b0c:3807
139.12.56.8 0:0:0:0:0:ffff:8b0c:3808
139.12.56.9 0:0:0:0:0:ffff:8b0c:3809
139.12.56.10 0:0:0:0:0:ffff:8b0c:380a
139.12.56.11 0:0:0:0:0:ffff:8b0c:380b
139.12.56.12 0:0:0:0:0:ffff:8b0c:380c
139.12.56.13 0:0:0:0:0:ffff:8b0c:380d
139.12.56.14 0:0:0:0:0:ffff:8b0c:380e
139.12.56.15 0:0:0:0:0:ffff:8b0c:380f
139.12.56.16 0:0:0:0:0:ffff:8b0c:3810
139.12.56.17 0:0:0:0:0:ffff:8b0c:3811
139.12.56.18 0:0:0:0:0:ffff:8b0c:3812
139.12.56.19 0:0:0:0:0:ffff:8b0c:3813
139.12.56.20 0:0:0:0:0:ffff:8b0c:3814
139.12.56.21 0:0:0:0:0:ffff:8b0c:3815
139.12.56.22 0:0:0:0:0:ffff:8b0c:3816
139.12.56.23 0:0:0:0:0:ffff:8b0c:3817
139.12.56.24 0:0:0:0:0:ffff:8b0c:3818
139.12.56.25 0:0:0:0:0:ffff:8b0c:3819
139.12.56.26 0:0:0:0:0:ffff:8b0c:381a
139.12.56.27 0:0:0:0:0:ffff:8b0c:381b
139.12.56.28 0:0:0:0:0:ffff:8b0c:381c
139.12.56.29 0:0:0:0:0:ffff:8b0c:381d
139.12.56.30 0:0:0:0:0:ffff:8b0c:381e
139.12.56.31 0:0:0:0:0:ffff:8b0c:381f
139.12.56.32 0:0:0:0:0:ffff:8b0c:3820
139.12.56.33 0:0:0:0:0:ffff:8b0c:3821
139.12.56.34 0:0:0:0:0:ffff:8b0c:3822
139.12.56.35 0:0:0:0:0:ffff:8b0c:3823
139.12.56.36 0:0:0:0:0:ffff:8b0c:3824
139.12.56.37 0:0:0:0:0:ffff:8b0c:3825
139.12.56.38 0:0:0:0:0:ffff:8b0c:3826
139.12.56.39 0:0:0:0:0:ffff:8b0c:3827
139.12.56.40 0:0:0:0:0:ffff:8b0c:3828
139.12.56.41 0:0:0:0:0:ffff:8b0c:3829
139.12.56.42 0:0:0:0:0:ffff:8b0c:382a
139.12.56.43 0:0:0:0:0:ffff:8b0c:382b
139.12.56.44 0:0:0:0:0:ffff:8b0c:382c
139.12.56.45 0:0:0:0:0:ffff:8b0c:382d
139.12.56.46 0:0:0:0:0:ffff:8b0c:382e
139.12.56.47 0:0:0:0:0:ffff:8b0c:382f
139.12.56.48 0:0:0:0:0:ffff:8b0c:3830
139.12.56.49 0:0:0:0:0:ffff:8b0c:3831
139.12.56.50 0:0:0:0:0:ffff:8b0c:3832
139.12.56.51 0:0:0:0:0:ffff:8b0c:3833
139.12.56.52 0:0:0:0:0:ffff:8b0c:3834
139.12.56.53 0:0:0:0:0:ffff:8b0c:3835
139.12.56.54 0:0:0:0:0:ffff:8b0c:3836
139.12.56.55 0:0:0:0:0:ffff:8b0c:3837
139.12.56.56 0:0:0:0:0:ffff:8b0c:3838
139.12.56.57 0:0:0:0:0:ffff:8b0c:3839
139.12.56.58 0:0:0:0:0:ffff:8b0c:383a
139.12.56.59 0:0:0:0:0:ffff:8b0c:383b
139.12.56.60 0:0:0:0:0:ffff:8b0c:383c


139.12.56.61 0:0:0:0:0:ffff:8b0c:383d
139.12.56.62 0:0:0:0:0:ffff:8b0c:383e
139.12.56.63 0:0:0:0:0:ffff:8b0c:383f
139.12.56.64 0:0:0:0:0:ffff:8b0c:3840
139.12.56.65 0:0:0:0:0:ffff:8b0c:3841
139.12.56.66 0:0:0:0:0:ffff:8b0c:3842
139.12.56.67 0:0:0:0:0:ffff:8b0c:3843
139.12.56.68 0:0:0:0:0:ffff:8b0c:3844
139.12.56.69 0:0:0:0:0:ffff:8b0c:3845
139.12.56.70 0:0:0:0:0:ffff:8b0c:3846
139.12.56.71 0:0:0:0:0:ffff:8b0c:3847
139.12.56.72 0:0:0:0:0:ffff:8b0c:3848
139.12.56.73 0:0:0:0:0:ffff:8b0c:3849
139.12.56.74 0:0:0:0:0:ffff:8b0c:384a
139.12.56.75 0:0:0:0:0:ffff:8b0c:384b
139.12.56.76 0:0:0:0:0:ffff:8b0c:384c
139.12.56.77 0:0:0:0:0:ffff:8b0c:384d
139.12.56.78 0:0:0:0:0:ffff:8b0c:384e
139.12.56.79 0:0:0:0:0:ffff:8b0c:384f
139.12.56.80 0:0:0:0:0:ffff:8b0c:3850
139.12.56.81 0:0:0:0:0:ffff:8b0c:3851
139.12.56.82 0:0:0:0:0:ffff:8b0c:3852
139.12.56.83 0:0:0:0:0:ffff:8b0c:3853
139.12.56.84 0:0:0:0:0:ffff:8b0c:3854
139.12.56.85 0:0:0:0:0:ffff:8b0c:3855
139.12.56.86 0:0:0:0:0:ffff:8b0c:3856
139.12.56.87 0:0:0:0:0:ffff:8b0c:3857
139.12.56.88 0:0:0:0:0:ffff:8b0c:3858
139.12.56.89 0:0:0:0:0:ffff:8b0c:3859
139.12.56.90 0:0:0:0:0:ffff:8b0c:385a
139.12.56.91 0:0:0:0:0:ffff:8b0c:385b
139.12.56.92 0:0:0:0:0:ffff:8b0c:385c
139.12.56.93 0:0:0:0:0:ffff:8b0c:385d
139.12.56.94 0:0:0:0:0:ffff:8b0c:385e
139.12.56.95 0:0:0:0:0:ffff:8b0c:385f
139.12.56.96 0:0:0:0:0:ffff:8b0c:3860
139.12.56.97 0:0:0:0:0:ffff:8b0c:3861
139.12.56.98 0:0:0:0:0:ffff:8b0c:3862
139.12.56.99 0:0:0:0:0:ffff:8b0c:3863
139.12.56.100 0:0:0:0:0:ffff:8b0c:3864
139.12.56.101 0:0:0:0:0:ffff:8b0c:3865
139.12.56.102 0:0:0:0:0:ffff:8b0c:3866
139.12.56.103 0:0:0:0:0:ffff:8b0c:3867
139.12.56.104 0:0:0:0:0:ffff:8b0c:3868
139.12.56.105 0:0:0:0:0:ffff:8b0c:3869
139.12.56.106 0:0:0:0:0:ffff:8b0c:386a
139.12.56.107 0:0:0:0:0:ffff:8b0c:386b
139.12.56.108 0:0:0:0:0:ffff:8b0c:386c
139.12.56.109 0:0:0:0:0:ffff:8b0c:386d
139.12.56.110 0:0:0:0:0:ffff:8b0c:386e
139.12.56.111 0:0:0:0:0:ffff:8b0c:386f
139.12.56.112 0:0:0:0:0:ffff:8b0c:3870
139.12.56.113 0:0:0:0:0:ffff:8b0c:3871
139.12.56.114 0:0:0:0:0:ffff:8b0c:3872
139.12.56.115 0:0:0:0:0:ffff:8b0c:3873
139.12.56.116 0:0:0:0:0:ffff:8b0c:3874
139.12.56.117 0:0:0:0:0:ffff:8b0c:3875
139.12.56.118 0:0:0:0:0:ffff:8b0c:3876
139.12.56.119 0:0:0:0:0:ffff:8b0c:3877
139.12.56.120 0:0:0:0:0:ffff:8b0c:3878


139.12.56.121 0:0:0:0:0:ffff:8b0c:3879
139.12.56.122 0:0:0:0:0:ffff:8b0c:387a
139.12.56.123 0:0:0:0:0:ffff:8b0c:387b
139.12.56.124 0:0:0:0:0:ffff:8b0c:387c
139.12.56.125 0:0:0:0:0:ffff:8b0c:387d
139.12.56.126 0:0:0:0:0:ffff:8b0c:387e
139.12.56.127 0:0:0:0:0:ffff:8b0c:387f
139.12.56.128 0:0:0:0:0:ffff:8b0c:3880
139.12.56.129 0:0:0:0:0:ffff:8b0c:3881
139.12.56.130 0:0:0:0:0:ffff:8b0c:3882
139.12.56.131 0:0:0:0:0:ffff:8b0c:3883
139.12.56.132 0:0:0:0:0:ffff:8b0c:3884
139.12.56.133 0:0:0:0:0:ffff:8b0c:3885
139.12.56.134 0:0:0:0:0:ffff:8b0c:3886
139.12.56.135 0:0:0:0:0:ffff:8b0c:3887
139.12.56.136 0:0:0:0:0:ffff:8b0c:3888
139.12.56.137 0:0:0:0:0:ffff:8b0c:3889
139.12.56.138 0:0:0:0:0:ffff:8b0c:388a
139.12.56.139 0:0:0:0:0:ffff:8b0c:388b
139.12.56.140 0:0:0:0:0:ffff:8b0c:388c
139.12.56.141 0:0:0:0:0:ffff:8b0c:388d
139.12.56.142 0:0:0:0:0:ffff:8b0c:388e
139.12.56.143 0:0:0:0:0:ffff:8b0c:388f
139.12.56.144 0:0:0:0:0:ffff:8b0c:3890
139.12.56.145 0:0:0:0:0:ffff:8b0c:3891
139.12.56.146 0:0:0:0:0:ffff:8b0c:3892
139.12.56.147 0:0:0:0:0:ffff:8b0c:3893
139.12.56.148 0:0:0:0:0:ffff:8b0c:3894
139.12.56.149 0:0:0:0:0:ffff:8b0c:3895
139.12.56.150 0:0:0:0:0:ffff:8b0c:3896
139.12.56.151 0:0:0:0:0:ffff:8b0c:3897
139.12.56.152 0:0:0:0:0:ffff:8b0c:3898
139.12.56.153 0:0:0:0:0:ffff:8b0c:3899
139.12.56.154 0:0:0:0:0:ffff:8b0c:389a
139.12.56.155 0:0:0:0:0:ffff:8b0c:389b
139.12.56.156 0:0:0:0:0:ffff:8b0c:389c
139.12.56.157 0:0:0:0:0:ffff:8b0c:389d
139.12.56.158 0:0:0:0:0:ffff:8b0c:389e
139.12.56.159 0:0:0:0:0:ffff:8b0c:389f
139.12.56.160 0:0:0:0:0:ffff:8b0c:38a0
139.12.56.161 0:0:0:0:0:ffff:8b0c:38a1
139.12.56.162 0:0:0:0:0:ffff:8b0c:38a2
139.12.56.163 0:0:0:0:0:ffff:8b0c:38a3
139.12.56.164 0:0:0:0:0:ffff:8b0c:38a4
139.12.56.165 0:0:0:0:0:ffff:8b0c:38a5
139.12.56.166 0:0:0:0:0:ffff:8b0c:38a6
139.12.56.167 0:0:0:0:0:ffff:8b0c:38a7
139.12.56.168 0:0:0:0:0:ffff:8b0c:38a8
139.12.56.169 0:0:0:0:0:ffff:8b0c:38a9
139.12.56.170 0:0:0:0:0:ffff:8b0c:38aa
139.12.56.171 0:0:0:0:0:ffff:8b0c:38ab
139.12.56.172 0:0:0:0:0:ffff:8b0c:38ac
139.12.56.173 0:0:0:0:0:ffff:8b0c:38ad
139.12.56.174 0:0:0:0:0:ffff:8b0c:38ae
139.12.56.175 0:0:0:0:0:ffff:8b0c:38af
139.12.56.176 0:0:0:0:0:ffff:8b0c:38b0
139.12.56.177 0:0:0:0:0:ffff:8b0c:38b1
139.12.56.178 0:0:0:0:0:ffff:8b0c:38b2
139.12.56.179 0:0:0:0:0:ffff:8b0c:38b3
139.12.56.180 0:0:0:0:0:ffff:8b0c:38b4


139.12.56.181 0:0:0:0:0:ffff:8b0c:38b5
139.12.56.182 0:0:0:0:0:ffff:8b0c:38b6
139.12.56.183 0:0:0:0:0:ffff:8b0c:38b7
139.12.56.184 0:0:0:0:0:ffff:8b0c:38b8
139.12.56.185 0:0:0:0:0:ffff:8b0c:38b9
139.12.56.186 0:0:0:0:0:ffff:8b0c:38ba
139.12.56.187 0:0:0:0:0:ffff:8b0c:38bb
139.12.56.188 0:0:0:0:0:ffff:8b0c:38bc
139.12.56.189 0:0:0:0:0:ffff:8b0c:38bd
139.12.56.190 0:0:0:0:0:ffff:8b0c:38be
139.12.56.191 0:0:0:0:0:ffff:8b0c:38bf
139.12.56.192 0:0:0:0:0:ffff:8b0c:38c0
139.12.56.193 0:0:0:0:0:ffff:8b0c:38c1
139.12.56.194 0:0:0:0:0:ffff:8b0c:38c2
139.12.56.195 0:0:0:0:0:ffff:8b0c:38c3
139.12.56.196 0:0:0:0:0:ffff:8b0c:38c4
139.12.56.197 0:0:0:0:0:ffff:8b0c:38c5
139.12.56.198 0:0:0:0:0:ffff:8b0c:38c6
139.12.56.199 0:0:0:0:0:ffff:8b0c:38c7
139.12.56.200 0:0:0:0:0:ffff:8b0c:38c8
139.12.56.201 0:0:0:0:0:ffff:8b0c:38c9
139.12.56.202 0:0:0:0:0:ffff:8b0c:38ca
139.12.56.203 0:0:0:0:0:ffff:8b0c:38cb
139.12.56.204 0:0:0:0:0:ffff:8b0c:38cc
139.12.56.205 0:0:0:0:0:ffff:8b0c:38cd
139.12.56.206 0:0:0:0:0:ffff:8b0c:38ce
139.12.56.207 0:0:0:0:0:ffff:8b0c:38cf
139.12.56.208 0:0:0:0:0:ffff:8b0c:38d0
139.12.56.209 0:0:0:0:0:ffff:8b0c:38d1
139.12.56.210 0:0:0:0:0:ffff:8b0c:38d2
139.12.56.211 0:0:0:0:0:ffff:8b0c:38d3
139.12.56.212 0:0:0:0:0:ffff:8b0c:38d4
139.12.56.213 0:0:0:0:0:ffff:8b0c:38d5
139.12.56.214 0:0:0:0:0:ffff:8b0c:38d6
139.12.56.215 0:0:0:0:0:ffff:8b0c:38d7
139.12.56.216 0:0:0:0:0:ffff:8b0c:38d8
139.12.56.217 0:0:0:0:0:ffff:8b0c:38d9
139.12.56.218 0:0:0:0:0:ffff:8b0c:38da
139.12.56.219 0:0:0:0:0:ffff:8b0c:38db
139.12.56.220 0:0:0:0:0:ffff:8b0c:38dc
139.12.56.221 0:0:0:0:0:ffff:8b0c:38dd
139.12.56.222 0:0:0:0:0:ffff:8b0c:38de
139.12.56.223 0:0:0:0:0:ffff:8b0c:38df
139.12.56.224 0:0:0:0:0:ffff:8b0c:38e0
139.12.56.225 0:0:0:0:0:ffff:8b0c:38e1
139.12.56.226 0:0:0:0:0:ffff:8b0c:38e2
139.12.56.227 0:0:0:0:0:ffff:8b0c:38e3
139.12.56.228 0:0:0:0:0:ffff:8b0c:38e4
139.12.56.229 0:0:0:0:0:ffff:8b0c:38e5
139.12.56.230 0:0:0:0:0:ffff:8b0c:38e6
139.12.56.231 0:0:0:0:0:ffff:8b0c:38e7
139.12.56.232 0:0:0:0:0:ffff:8b0c:38e8
139.12.56.233 0:0:0:0:0:ffff:8b0c:38e9
139.12.56.234 0:0:0:0:0:ffff:8b0c:38ea
139.12.56.235 0:0:0:0:0:ffff:8b0c:38eb
139.12.56.236 0:0:0:0:0:ffff:8b0c:38ec
139.12.56.237 0:0:0:0:0:ffff:8b0c:38ed
139.12.56.238 0:0:0:0:0:ffff:8b0c:38ee
139.12.56.239 0:0:0:0:0:ffff:8b0c:38ef
139.12.56.240 0:0:0:0:0:ffff:8b0c:38f0
139.12.56.241 0:0:0:0:0:ffff:8b0c:38f1
139.12.56.242 0:0:0:0:0:ffff:8b0c:38f2
139.12.56.243 0:0:0:0:0:ffff:8b0c:38f3
139.12.56.244 0:0:0:0:0:ffff:8b0c:38f4
139.12.56.245 0:0:0:0:0:ffff:8b0c:38f5
139.12.56.246 0:0:0:0:0:ffff:8b0c:38f6
139.12.56.247 0:0:0:0:0:ffff:8b0c:38f7
139.12.56.248 0:0:0:0:0:ffff:8b0c:38f8
139.12.56.249 0:0:0:0:0:ffff:8b0c:38f9
139.12.56.250 0:0:0:0:0:ffff:8b0c:38fa
139.12.56.251 0:0:0:0:0:ffff:8b0c:38fb
139.12.56.252 0:0:0:0:0:ffff:8b0c:38fc
139.12.56.253 0:0:0:0:0:ffff:8b0c:38fd
139.12.56.254 0:0:0:0:0:ffff:8b0c:38fe
139.12.56.255 0:0:0:0:0:ffff:8b0c:38ff


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.