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
126.123.56.1 0:0:0:0:0:ffff:7e7b:3801
126.123.56.2 0:0:0:0:0:ffff:7e7b:3802
126.123.56.3 0:0:0:0:0:ffff:7e7b:3803
126.123.56.4 0:0:0:0:0:ffff:7e7b:3804
126.123.56.5 0:0:0:0:0:ffff:7e7b:3805
126.123.56.6 0:0:0:0:0:ffff:7e7b:3806
126.123.56.7 0:0:0:0:0:ffff:7e7b:3807
126.123.56.8 0:0:0:0:0:ffff:7e7b:3808
126.123.56.9 0:0:0:0:0:ffff:7e7b:3809
126.123.56.10 0:0:0:0:0:ffff:7e7b:380a
126.123.56.11 0:0:0:0:0:ffff:7e7b:380b
126.123.56.12 0:0:0:0:0:ffff:7e7b:380c
126.123.56.13 0:0:0:0:0:ffff:7e7b:380d
126.123.56.14 0:0:0:0:0:ffff:7e7b:380e
126.123.56.15 0:0:0:0:0:ffff:7e7b:380f
126.123.56.16 0:0:0:0:0:ffff:7e7b:3810
126.123.56.17 0:0:0:0:0:ffff:7e7b:3811
126.123.56.18 0:0:0:0:0:ffff:7e7b:3812
126.123.56.19 0:0:0:0:0:ffff:7e7b:3813
126.123.56.20 0:0:0:0:0:ffff:7e7b:3814
126.123.56.21 0:0:0:0:0:ffff:7e7b:3815
126.123.56.22 0:0:0:0:0:ffff:7e7b:3816
126.123.56.23 0:0:0:0:0:ffff:7e7b:3817
126.123.56.24 0:0:0:0:0:ffff:7e7b:3818
126.123.56.25 0:0:0:0:0:ffff:7e7b:3819
126.123.56.26 0:0:0:0:0:ffff:7e7b:381a
126.123.56.27 0:0:0:0:0:ffff:7e7b:381b
126.123.56.28 0:0:0:0:0:ffff:7e7b:381c
126.123.56.29 0:0:0:0:0:ffff:7e7b:381d
126.123.56.30 0:0:0:0:0:ffff:7e7b:381e
126.123.56.31 0:0:0:0:0:ffff:7e7b:381f
126.123.56.32 0:0:0:0:0:ffff:7e7b:3820
126.123.56.33 0:0:0:0:0:ffff:7e7b:3821
126.123.56.34 0:0:0:0:0:ffff:7e7b:3822
126.123.56.35 0:0:0:0:0:ffff:7e7b:3823
126.123.56.36 0:0:0:0:0:ffff:7e7b:3824
126.123.56.37 0:0:0:0:0:ffff:7e7b:3825
126.123.56.38 0:0:0:0:0:ffff:7e7b:3826
126.123.56.39 0:0:0:0:0:ffff:7e7b:3827
126.123.56.40 0:0:0:0:0:ffff:7e7b:3828
126.123.56.41 0:0:0:0:0:ffff:7e7b:3829
126.123.56.42 0:0:0:0:0:ffff:7e7b:382a
126.123.56.43 0:0:0:0:0:ffff:7e7b:382b
126.123.56.44 0:0:0:0:0:ffff:7e7b:382c
126.123.56.45 0:0:0:0:0:ffff:7e7b:382d
126.123.56.46 0:0:0:0:0:ffff:7e7b:382e
126.123.56.47 0:0:0:0:0:ffff:7e7b:382f
126.123.56.48 0:0:0:0:0:ffff:7e7b:3830
126.123.56.49 0:0:0:0:0:ffff:7e7b:3831
126.123.56.50 0:0:0:0:0:ffff:7e7b:3832
126.123.56.51 0:0:0:0:0:ffff:7e7b:3833
126.123.56.52 0:0:0:0:0:ffff:7e7b:3834
126.123.56.53 0:0:0:0:0:ffff:7e7b:3835
126.123.56.54 0:0:0:0:0:ffff:7e7b:3836
126.123.56.55 0:0:0:0:0:ffff:7e7b:3837
126.123.56.56 0:0:0:0:0:ffff:7e7b:3838
126.123.56.57 0:0:0:0:0:ffff:7e7b:3839
126.123.56.58 0:0:0:0:0:ffff:7e7b:383a
126.123.56.59 0:0:0:0:0:ffff:7e7b:383b
126.123.56.60 0:0:0:0:0:ffff:7e7b:383c


126.123.56.61 0:0:0:0:0:ffff:7e7b:383d
126.123.56.62 0:0:0:0:0:ffff:7e7b:383e
126.123.56.63 0:0:0:0:0:ffff:7e7b:383f
126.123.56.64 0:0:0:0:0:ffff:7e7b:3840
126.123.56.65 0:0:0:0:0:ffff:7e7b:3841
126.123.56.66 0:0:0:0:0:ffff:7e7b:3842
126.123.56.67 0:0:0:0:0:ffff:7e7b:3843
126.123.56.68 0:0:0:0:0:ffff:7e7b:3844
126.123.56.69 0:0:0:0:0:ffff:7e7b:3845
126.123.56.70 0:0:0:0:0:ffff:7e7b:3846
126.123.56.71 0:0:0:0:0:ffff:7e7b:3847
126.123.56.72 0:0:0:0:0:ffff:7e7b:3848
126.123.56.73 0:0:0:0:0:ffff:7e7b:3849
126.123.56.74 0:0:0:0:0:ffff:7e7b:384a
126.123.56.75 0:0:0:0:0:ffff:7e7b:384b
126.123.56.76 0:0:0:0:0:ffff:7e7b:384c
126.123.56.77 0:0:0:0:0:ffff:7e7b:384d
126.123.56.78 0:0:0:0:0:ffff:7e7b:384e
126.123.56.79 0:0:0:0:0:ffff:7e7b:384f
126.123.56.80 0:0:0:0:0:ffff:7e7b:3850
126.123.56.81 0:0:0:0:0:ffff:7e7b:3851
126.123.56.82 0:0:0:0:0:ffff:7e7b:3852
126.123.56.83 0:0:0:0:0:ffff:7e7b:3853
126.123.56.84 0:0:0:0:0:ffff:7e7b:3854
126.123.56.85 0:0:0:0:0:ffff:7e7b:3855
126.123.56.86 0:0:0:0:0:ffff:7e7b:3856
126.123.56.87 0:0:0:0:0:ffff:7e7b:3857
126.123.56.88 0:0:0:0:0:ffff:7e7b:3858
126.123.56.89 0:0:0:0:0:ffff:7e7b:3859
126.123.56.90 0:0:0:0:0:ffff:7e7b:385a
126.123.56.91 0:0:0:0:0:ffff:7e7b:385b
126.123.56.92 0:0:0:0:0:ffff:7e7b:385c
126.123.56.93 0:0:0:0:0:ffff:7e7b:385d
126.123.56.94 0:0:0:0:0:ffff:7e7b:385e
126.123.56.95 0:0:0:0:0:ffff:7e7b:385f
126.123.56.96 0:0:0:0:0:ffff:7e7b:3860
126.123.56.97 0:0:0:0:0:ffff:7e7b:3861
126.123.56.98 0:0:0:0:0:ffff:7e7b:3862
126.123.56.99 0:0:0:0:0:ffff:7e7b:3863
126.123.56.100 0:0:0:0:0:ffff:7e7b:3864
126.123.56.101 0:0:0:0:0:ffff:7e7b:3865
126.123.56.102 0:0:0:0:0:ffff:7e7b:3866
126.123.56.103 0:0:0:0:0:ffff:7e7b:3867
126.123.56.104 0:0:0:0:0:ffff:7e7b:3868
126.123.56.105 0:0:0:0:0:ffff:7e7b:3869
126.123.56.106 0:0:0:0:0:ffff:7e7b:386a
126.123.56.107 0:0:0:0:0:ffff:7e7b:386b
126.123.56.108 0:0:0:0:0:ffff:7e7b:386c
126.123.56.109 0:0:0:0:0:ffff:7e7b:386d
126.123.56.110 0:0:0:0:0:ffff:7e7b:386e
126.123.56.111 0:0:0:0:0:ffff:7e7b:386f
126.123.56.112 0:0:0:0:0:ffff:7e7b:3870
126.123.56.113 0:0:0:0:0:ffff:7e7b:3871
126.123.56.114 0:0:0:0:0:ffff:7e7b:3872
126.123.56.115 0:0:0:0:0:ffff:7e7b:3873
126.123.56.116 0:0:0:0:0:ffff:7e7b:3874
126.123.56.117 0:0:0:0:0:ffff:7e7b:3875
126.123.56.118 0:0:0:0:0:ffff:7e7b:3876
126.123.56.119 0:0:0:0:0:ffff:7e7b:3877
126.123.56.120 0:0:0:0:0:ffff:7e7b:3878


126.123.56.121 0:0:0:0:0:ffff:7e7b:3879
126.123.56.122 0:0:0:0:0:ffff:7e7b:387a
126.123.56.123 0:0:0:0:0:ffff:7e7b:387b
126.123.56.124 0:0:0:0:0:ffff:7e7b:387c
126.123.56.125 0:0:0:0:0:ffff:7e7b:387d
126.123.56.126 0:0:0:0:0:ffff:7e7b:387e
126.123.56.127 0:0:0:0:0:ffff:7e7b:387f
126.123.56.128 0:0:0:0:0:ffff:7e7b:3880
126.123.56.129 0:0:0:0:0:ffff:7e7b:3881
126.123.56.130 0:0:0:0:0:ffff:7e7b:3882
126.123.56.131 0:0:0:0:0:ffff:7e7b:3883
126.123.56.132 0:0:0:0:0:ffff:7e7b:3884
126.123.56.133 0:0:0:0:0:ffff:7e7b:3885
126.123.56.134 0:0:0:0:0:ffff:7e7b:3886
126.123.56.135 0:0:0:0:0:ffff:7e7b:3887
126.123.56.136 0:0:0:0:0:ffff:7e7b:3888
126.123.56.137 0:0:0:0:0:ffff:7e7b:3889
126.123.56.138 0:0:0:0:0:ffff:7e7b:388a
126.123.56.139 0:0:0:0:0:ffff:7e7b:388b
126.123.56.140 0:0:0:0:0:ffff:7e7b:388c
126.123.56.141 0:0:0:0:0:ffff:7e7b:388d
126.123.56.142 0:0:0:0:0:ffff:7e7b:388e
126.123.56.143 0:0:0:0:0:ffff:7e7b:388f
126.123.56.144 0:0:0:0:0:ffff:7e7b:3890
126.123.56.145 0:0:0:0:0:ffff:7e7b:3891
126.123.56.146 0:0:0:0:0:ffff:7e7b:3892
126.123.56.147 0:0:0:0:0:ffff:7e7b:3893
126.123.56.148 0:0:0:0:0:ffff:7e7b:3894
126.123.56.149 0:0:0:0:0:ffff:7e7b:3895
126.123.56.150 0:0:0:0:0:ffff:7e7b:3896
126.123.56.151 0:0:0:0:0:ffff:7e7b:3897
126.123.56.152 0:0:0:0:0:ffff:7e7b:3898
126.123.56.153 0:0:0:0:0:ffff:7e7b:3899
126.123.56.154 0:0:0:0:0:ffff:7e7b:389a
126.123.56.155 0:0:0:0:0:ffff:7e7b:389b
126.123.56.156 0:0:0:0:0:ffff:7e7b:389c
126.123.56.157 0:0:0:0:0:ffff:7e7b:389d
126.123.56.158 0:0:0:0:0:ffff:7e7b:389e
126.123.56.159 0:0:0:0:0:ffff:7e7b:389f
126.123.56.160 0:0:0:0:0:ffff:7e7b:38a0
126.123.56.161 0:0:0:0:0:ffff:7e7b:38a1
126.123.56.162 0:0:0:0:0:ffff:7e7b:38a2
126.123.56.163 0:0:0:0:0:ffff:7e7b:38a3
126.123.56.164 0:0:0:0:0:ffff:7e7b:38a4
126.123.56.165 0:0:0:0:0:ffff:7e7b:38a5
126.123.56.166 0:0:0:0:0:ffff:7e7b:38a6
126.123.56.167 0:0:0:0:0:ffff:7e7b:38a7
126.123.56.168 0:0:0:0:0:ffff:7e7b:38a8
126.123.56.169 0:0:0:0:0:ffff:7e7b:38a9
126.123.56.170 0:0:0:0:0:ffff:7e7b:38aa
126.123.56.171 0:0:0:0:0:ffff:7e7b:38ab
126.123.56.172 0:0:0:0:0:ffff:7e7b:38ac
126.123.56.173 0:0:0:0:0:ffff:7e7b:38ad
126.123.56.174 0:0:0:0:0:ffff:7e7b:38ae
126.123.56.175 0:0:0:0:0:ffff:7e7b:38af
126.123.56.176 0:0:0:0:0:ffff:7e7b:38b0
126.123.56.177 0:0:0:0:0:ffff:7e7b:38b1
126.123.56.178 0:0:0:0:0:ffff:7e7b:38b2
126.123.56.179 0:0:0:0:0:ffff:7e7b:38b3
126.123.56.180 0:0:0:0:0:ffff:7e7b:38b4


126.123.56.181 0:0:0:0:0:ffff:7e7b:38b5
126.123.56.182 0:0:0:0:0:ffff:7e7b:38b6
126.123.56.183 0:0:0:0:0:ffff:7e7b:38b7
126.123.56.184 0:0:0:0:0:ffff:7e7b:38b8
126.123.56.185 0:0:0:0:0:ffff:7e7b:38b9
126.123.56.186 0:0:0:0:0:ffff:7e7b:38ba
126.123.56.187 0:0:0:0:0:ffff:7e7b:38bb
126.123.56.188 0:0:0:0:0:ffff:7e7b:38bc
126.123.56.189 0:0:0:0:0:ffff:7e7b:38bd
126.123.56.190 0:0:0:0:0:ffff:7e7b:38be
126.123.56.191 0:0:0:0:0:ffff:7e7b:38bf
126.123.56.192 0:0:0:0:0:ffff:7e7b:38c0
126.123.56.193 0:0:0:0:0:ffff:7e7b:38c1
126.123.56.194 0:0:0:0:0:ffff:7e7b:38c2
126.123.56.195 0:0:0:0:0:ffff:7e7b:38c3
126.123.56.196 0:0:0:0:0:ffff:7e7b:38c4
126.123.56.197 0:0:0:0:0:ffff:7e7b:38c5
126.123.56.198 0:0:0:0:0:ffff:7e7b:38c6
126.123.56.199 0:0:0:0:0:ffff:7e7b:38c7
126.123.56.200 0:0:0:0:0:ffff:7e7b:38c8
126.123.56.201 0:0:0:0:0:ffff:7e7b:38c9
126.123.56.202 0:0:0:0:0:ffff:7e7b:38ca
126.123.56.203 0:0:0:0:0:ffff:7e7b:38cb
126.123.56.204 0:0:0:0:0:ffff:7e7b:38cc
126.123.56.205 0:0:0:0:0:ffff:7e7b:38cd
126.123.56.206 0:0:0:0:0:ffff:7e7b:38ce
126.123.56.207 0:0:0:0:0:ffff:7e7b:38cf
126.123.56.208 0:0:0:0:0:ffff:7e7b:38d0
126.123.56.209 0:0:0:0:0:ffff:7e7b:38d1
126.123.56.210 0:0:0:0:0:ffff:7e7b:38d2
126.123.56.211 0:0:0:0:0:ffff:7e7b:38d3
126.123.56.212 0:0:0:0:0:ffff:7e7b:38d4
126.123.56.213 0:0:0:0:0:ffff:7e7b:38d5
126.123.56.214 0:0:0:0:0:ffff:7e7b:38d6
126.123.56.215 0:0:0:0:0:ffff:7e7b:38d7
126.123.56.216 0:0:0:0:0:ffff:7e7b:38d8
126.123.56.217 0:0:0:0:0:ffff:7e7b:38d9
126.123.56.218 0:0:0:0:0:ffff:7e7b:38da
126.123.56.219 0:0:0:0:0:ffff:7e7b:38db
126.123.56.220 0:0:0:0:0:ffff:7e7b:38dc
126.123.56.221 0:0:0:0:0:ffff:7e7b:38dd
126.123.56.222 0:0:0:0:0:ffff:7e7b:38de
126.123.56.223 0:0:0:0:0:ffff:7e7b:38df
126.123.56.224 0:0:0:0:0:ffff:7e7b:38e0
126.123.56.225 0:0:0:0:0:ffff:7e7b:38e1
126.123.56.226 0:0:0:0:0:ffff:7e7b:38e2
126.123.56.227 0:0:0:0:0:ffff:7e7b:38e3
126.123.56.228 0:0:0:0:0:ffff:7e7b:38e4
126.123.56.229 0:0:0:0:0:ffff:7e7b:38e5
126.123.56.230 0:0:0:0:0:ffff:7e7b:38e6
126.123.56.231 0:0:0:0:0:ffff:7e7b:38e7
126.123.56.232 0:0:0:0:0:ffff:7e7b:38e8
126.123.56.233 0:0:0:0:0:ffff:7e7b:38e9
126.123.56.234 0:0:0:0:0:ffff:7e7b:38ea
126.123.56.235 0:0:0:0:0:ffff:7e7b:38eb
126.123.56.236 0:0:0:0:0:ffff:7e7b:38ec
126.123.56.237 0:0:0:0:0:ffff:7e7b:38ed
126.123.56.238 0:0:0:0:0:ffff:7e7b:38ee
126.123.56.239 0:0:0:0:0:ffff:7e7b:38ef
126.123.56.240 0:0:0:0:0:ffff:7e7b:38f0
126.123.56.241 0:0:0:0:0:ffff:7e7b:38f1
126.123.56.242 0:0:0:0:0:ffff:7e7b:38f2
126.123.56.243 0:0:0:0:0:ffff:7e7b:38f3
126.123.56.244 0:0:0:0:0:ffff:7e7b:38f4
126.123.56.245 0:0:0:0:0:ffff:7e7b:38f5
126.123.56.246 0:0:0:0:0:ffff:7e7b:38f6
126.123.56.247 0:0:0:0:0:ffff:7e7b:38f7
126.123.56.248 0:0:0:0:0:ffff:7e7b:38f8
126.123.56.249 0:0:0:0:0:ffff:7e7b:38f9
126.123.56.250 0:0:0:0:0:ffff:7e7b:38fa
126.123.56.251 0:0:0:0:0:ffff:7e7b:38fb
126.123.56.252 0:0:0:0:0:ffff:7e7b:38fc
126.123.56.253 0:0:0:0:0:ffff:7e7b:38fd
126.123.56.254 0:0:0:0:0:ffff:7e7b:38fe
126.123.56.255 0:0:0:0:0:ffff:7e7b: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.