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
3.123.151.1 0:0:0:0:0:ffff:37b:9701
3.123.151.2 0:0:0:0:0:ffff:37b:9702
3.123.151.3 0:0:0:0:0:ffff:37b:9703
3.123.151.4 0:0:0:0:0:ffff:37b:9704
3.123.151.5 0:0:0:0:0:ffff:37b:9705
3.123.151.6 0:0:0:0:0:ffff:37b:9706
3.123.151.7 0:0:0:0:0:ffff:37b:9707
3.123.151.8 0:0:0:0:0:ffff:37b:9708
3.123.151.9 0:0:0:0:0:ffff:37b:9709
3.123.151.10 0:0:0:0:0:ffff:37b:970a
3.123.151.11 0:0:0:0:0:ffff:37b:970b
3.123.151.12 0:0:0:0:0:ffff:37b:970c
3.123.151.13 0:0:0:0:0:ffff:37b:970d
3.123.151.14 0:0:0:0:0:ffff:37b:970e
3.123.151.15 0:0:0:0:0:ffff:37b:970f
3.123.151.16 0:0:0:0:0:ffff:37b:9710
3.123.151.17 0:0:0:0:0:ffff:37b:9711
3.123.151.18 0:0:0:0:0:ffff:37b:9712
3.123.151.19 0:0:0:0:0:ffff:37b:9713
3.123.151.20 0:0:0:0:0:ffff:37b:9714
3.123.151.21 0:0:0:0:0:ffff:37b:9715
3.123.151.22 0:0:0:0:0:ffff:37b:9716
3.123.151.23 0:0:0:0:0:ffff:37b:9717
3.123.151.24 0:0:0:0:0:ffff:37b:9718
3.123.151.25 0:0:0:0:0:ffff:37b:9719
3.123.151.26 0:0:0:0:0:ffff:37b:971a
3.123.151.27 0:0:0:0:0:ffff:37b:971b
3.123.151.28 0:0:0:0:0:ffff:37b:971c
3.123.151.29 0:0:0:0:0:ffff:37b:971d
3.123.151.30 0:0:0:0:0:ffff:37b:971e
3.123.151.31 0:0:0:0:0:ffff:37b:971f
3.123.151.32 0:0:0:0:0:ffff:37b:9720
3.123.151.33 0:0:0:0:0:ffff:37b:9721
3.123.151.34 0:0:0:0:0:ffff:37b:9722
3.123.151.35 0:0:0:0:0:ffff:37b:9723
3.123.151.36 0:0:0:0:0:ffff:37b:9724
3.123.151.37 0:0:0:0:0:ffff:37b:9725
3.123.151.38 0:0:0:0:0:ffff:37b:9726
3.123.151.39 0:0:0:0:0:ffff:37b:9727
3.123.151.40 0:0:0:0:0:ffff:37b:9728
3.123.151.41 0:0:0:0:0:ffff:37b:9729
3.123.151.42 0:0:0:0:0:ffff:37b:972a
3.123.151.43 0:0:0:0:0:ffff:37b:972b
3.123.151.44 0:0:0:0:0:ffff:37b:972c
3.123.151.45 0:0:0:0:0:ffff:37b:972d
3.123.151.46 0:0:0:0:0:ffff:37b:972e
3.123.151.47 0:0:0:0:0:ffff:37b:972f
3.123.151.48 0:0:0:0:0:ffff:37b:9730
3.123.151.49 0:0:0:0:0:ffff:37b:9731
3.123.151.50 0:0:0:0:0:ffff:37b:9732
3.123.151.51 0:0:0:0:0:ffff:37b:9733
3.123.151.52 0:0:0:0:0:ffff:37b:9734
3.123.151.53 0:0:0:0:0:ffff:37b:9735
3.123.151.54 0:0:0:0:0:ffff:37b:9736
3.123.151.55 0:0:0:0:0:ffff:37b:9737
3.123.151.56 0:0:0:0:0:ffff:37b:9738
3.123.151.57 0:0:0:0:0:ffff:37b:9739
3.123.151.58 0:0:0:0:0:ffff:37b:973a
3.123.151.59 0:0:0:0:0:ffff:37b:973b
3.123.151.60 0:0:0:0:0:ffff:37b:973c


3.123.151.61 0:0:0:0:0:ffff:37b:973d
3.123.151.62 0:0:0:0:0:ffff:37b:973e
3.123.151.63 0:0:0:0:0:ffff:37b:973f
3.123.151.64 0:0:0:0:0:ffff:37b:9740
3.123.151.65 0:0:0:0:0:ffff:37b:9741
3.123.151.66 0:0:0:0:0:ffff:37b:9742
3.123.151.67 0:0:0:0:0:ffff:37b:9743
3.123.151.68 0:0:0:0:0:ffff:37b:9744
3.123.151.69 0:0:0:0:0:ffff:37b:9745
3.123.151.70 0:0:0:0:0:ffff:37b:9746
3.123.151.71 0:0:0:0:0:ffff:37b:9747
3.123.151.72 0:0:0:0:0:ffff:37b:9748
3.123.151.73 0:0:0:0:0:ffff:37b:9749
3.123.151.74 0:0:0:0:0:ffff:37b:974a
3.123.151.75 0:0:0:0:0:ffff:37b:974b
3.123.151.76 0:0:0:0:0:ffff:37b:974c
3.123.151.77 0:0:0:0:0:ffff:37b:974d
3.123.151.78 0:0:0:0:0:ffff:37b:974e
3.123.151.79 0:0:0:0:0:ffff:37b:974f
3.123.151.80 0:0:0:0:0:ffff:37b:9750
3.123.151.81 0:0:0:0:0:ffff:37b:9751
3.123.151.82 0:0:0:0:0:ffff:37b:9752
3.123.151.83 0:0:0:0:0:ffff:37b:9753
3.123.151.84 0:0:0:0:0:ffff:37b:9754
3.123.151.85 0:0:0:0:0:ffff:37b:9755
3.123.151.86 0:0:0:0:0:ffff:37b:9756
3.123.151.87 0:0:0:0:0:ffff:37b:9757
3.123.151.88 0:0:0:0:0:ffff:37b:9758
3.123.151.89 0:0:0:0:0:ffff:37b:9759
3.123.151.90 0:0:0:0:0:ffff:37b:975a
3.123.151.91 0:0:0:0:0:ffff:37b:975b
3.123.151.92 0:0:0:0:0:ffff:37b:975c
3.123.151.93 0:0:0:0:0:ffff:37b:975d
3.123.151.94 0:0:0:0:0:ffff:37b:975e
3.123.151.95 0:0:0:0:0:ffff:37b:975f
3.123.151.96 0:0:0:0:0:ffff:37b:9760
3.123.151.97 0:0:0:0:0:ffff:37b:9761
3.123.151.98 0:0:0:0:0:ffff:37b:9762
3.123.151.99 0:0:0:0:0:ffff:37b:9763
3.123.151.100 0:0:0:0:0:ffff:37b:9764
3.123.151.101 0:0:0:0:0:ffff:37b:9765
3.123.151.102 0:0:0:0:0:ffff:37b:9766
3.123.151.103 0:0:0:0:0:ffff:37b:9767
3.123.151.104 0:0:0:0:0:ffff:37b:9768
3.123.151.105 0:0:0:0:0:ffff:37b:9769
3.123.151.106 0:0:0:0:0:ffff:37b:976a
3.123.151.107 0:0:0:0:0:ffff:37b:976b
3.123.151.108 0:0:0:0:0:ffff:37b:976c
3.123.151.109 0:0:0:0:0:ffff:37b:976d
3.123.151.110 0:0:0:0:0:ffff:37b:976e
3.123.151.111 0:0:0:0:0:ffff:37b:976f
3.123.151.112 0:0:0:0:0:ffff:37b:9770
3.123.151.113 0:0:0:0:0:ffff:37b:9771
3.123.151.114 0:0:0:0:0:ffff:37b:9772
3.123.151.115 0:0:0:0:0:ffff:37b:9773
3.123.151.116 0:0:0:0:0:ffff:37b:9774
3.123.151.117 0:0:0:0:0:ffff:37b:9775
3.123.151.118 0:0:0:0:0:ffff:37b:9776
3.123.151.119 0:0:0:0:0:ffff:37b:9777
3.123.151.120 0:0:0:0:0:ffff:37b:9778


3.123.151.121 0:0:0:0:0:ffff:37b:9779
3.123.151.122 0:0:0:0:0:ffff:37b:977a
3.123.151.123 0:0:0:0:0:ffff:37b:977b
3.123.151.124 0:0:0:0:0:ffff:37b:977c
3.123.151.125 0:0:0:0:0:ffff:37b:977d
3.123.151.126 0:0:0:0:0:ffff:37b:977e
3.123.151.127 0:0:0:0:0:ffff:37b:977f
3.123.151.128 0:0:0:0:0:ffff:37b:9780
3.123.151.129 0:0:0:0:0:ffff:37b:9781
3.123.151.130 0:0:0:0:0:ffff:37b:9782
3.123.151.131 0:0:0:0:0:ffff:37b:9783
3.123.151.132 0:0:0:0:0:ffff:37b:9784
3.123.151.133 0:0:0:0:0:ffff:37b:9785
3.123.151.134 0:0:0:0:0:ffff:37b:9786
3.123.151.135 0:0:0:0:0:ffff:37b:9787
3.123.151.136 0:0:0:0:0:ffff:37b:9788
3.123.151.137 0:0:0:0:0:ffff:37b:9789
3.123.151.138 0:0:0:0:0:ffff:37b:978a
3.123.151.139 0:0:0:0:0:ffff:37b:978b
3.123.151.140 0:0:0:0:0:ffff:37b:978c
3.123.151.141 0:0:0:0:0:ffff:37b:978d
3.123.151.142 0:0:0:0:0:ffff:37b:978e
3.123.151.143 0:0:0:0:0:ffff:37b:978f
3.123.151.144 0:0:0:0:0:ffff:37b:9790
3.123.151.145 0:0:0:0:0:ffff:37b:9791
3.123.151.146 0:0:0:0:0:ffff:37b:9792
3.123.151.147 0:0:0:0:0:ffff:37b:9793
3.123.151.148 0:0:0:0:0:ffff:37b:9794
3.123.151.149 0:0:0:0:0:ffff:37b:9795
3.123.151.150 0:0:0:0:0:ffff:37b:9796
3.123.151.151 0:0:0:0:0:ffff:37b:9797
3.123.151.152 0:0:0:0:0:ffff:37b:9798
3.123.151.153 0:0:0:0:0:ffff:37b:9799
3.123.151.154 0:0:0:0:0:ffff:37b:979a
3.123.151.155 0:0:0:0:0:ffff:37b:979b
3.123.151.156 0:0:0:0:0:ffff:37b:979c
3.123.151.157 0:0:0:0:0:ffff:37b:979d
3.123.151.158 0:0:0:0:0:ffff:37b:979e
3.123.151.159 0:0:0:0:0:ffff:37b:979f
3.123.151.160 0:0:0:0:0:ffff:37b:97a0
3.123.151.161 0:0:0:0:0:ffff:37b:97a1
3.123.151.162 0:0:0:0:0:ffff:37b:97a2
3.123.151.163 0:0:0:0:0:ffff:37b:97a3
3.123.151.164 0:0:0:0:0:ffff:37b:97a4
3.123.151.165 0:0:0:0:0:ffff:37b:97a5
3.123.151.166 0:0:0:0:0:ffff:37b:97a6
3.123.151.167 0:0:0:0:0:ffff:37b:97a7
3.123.151.168 0:0:0:0:0:ffff:37b:97a8
3.123.151.169 0:0:0:0:0:ffff:37b:97a9
3.123.151.170 0:0:0:0:0:ffff:37b:97aa
3.123.151.171 0:0:0:0:0:ffff:37b:97ab
3.123.151.172 0:0:0:0:0:ffff:37b:97ac
3.123.151.173 0:0:0:0:0:ffff:37b:97ad
3.123.151.174 0:0:0:0:0:ffff:37b:97ae
3.123.151.175 0:0:0:0:0:ffff:37b:97af
3.123.151.176 0:0:0:0:0:ffff:37b:97b0
3.123.151.177 0:0:0:0:0:ffff:37b:97b1
3.123.151.178 0:0:0:0:0:ffff:37b:97b2
3.123.151.179 0:0:0:0:0:ffff:37b:97b3
3.123.151.180 0:0:0:0:0:ffff:37b:97b4


3.123.151.181 0:0:0:0:0:ffff:37b:97b5
3.123.151.182 0:0:0:0:0:ffff:37b:97b6
3.123.151.183 0:0:0:0:0:ffff:37b:97b7
3.123.151.184 0:0:0:0:0:ffff:37b:97b8
3.123.151.185 0:0:0:0:0:ffff:37b:97b9
3.123.151.186 0:0:0:0:0:ffff:37b:97ba
3.123.151.187 0:0:0:0:0:ffff:37b:97bb
3.123.151.188 0:0:0:0:0:ffff:37b:97bc
3.123.151.189 0:0:0:0:0:ffff:37b:97bd
3.123.151.190 0:0:0:0:0:ffff:37b:97be
3.123.151.191 0:0:0:0:0:ffff:37b:97bf
3.123.151.192 0:0:0:0:0:ffff:37b:97c0
3.123.151.193 0:0:0:0:0:ffff:37b:97c1
3.123.151.194 0:0:0:0:0:ffff:37b:97c2
3.123.151.195 0:0:0:0:0:ffff:37b:97c3
3.123.151.196 0:0:0:0:0:ffff:37b:97c4
3.123.151.197 0:0:0:0:0:ffff:37b:97c5
3.123.151.198 0:0:0:0:0:ffff:37b:97c6
3.123.151.199 0:0:0:0:0:ffff:37b:97c7
3.123.151.200 0:0:0:0:0:ffff:37b:97c8
3.123.151.201 0:0:0:0:0:ffff:37b:97c9
3.123.151.202 0:0:0:0:0:ffff:37b:97ca
3.123.151.203 0:0:0:0:0:ffff:37b:97cb
3.123.151.204 0:0:0:0:0:ffff:37b:97cc
3.123.151.205 0:0:0:0:0:ffff:37b:97cd
3.123.151.206 0:0:0:0:0:ffff:37b:97ce
3.123.151.207 0:0:0:0:0:ffff:37b:97cf
3.123.151.208 0:0:0:0:0:ffff:37b:97d0
3.123.151.209 0:0:0:0:0:ffff:37b:97d1
3.123.151.210 0:0:0:0:0:ffff:37b:97d2
3.123.151.211 0:0:0:0:0:ffff:37b:97d3
3.123.151.212 0:0:0:0:0:ffff:37b:97d4
3.123.151.213 0:0:0:0:0:ffff:37b:97d5
3.123.151.214 0:0:0:0:0:ffff:37b:97d6
3.123.151.215 0:0:0:0:0:ffff:37b:97d7
3.123.151.216 0:0:0:0:0:ffff:37b:97d8
3.123.151.217 0:0:0:0:0:ffff:37b:97d9
3.123.151.218 0:0:0:0:0:ffff:37b:97da
3.123.151.219 0:0:0:0:0:ffff:37b:97db
3.123.151.220 0:0:0:0:0:ffff:37b:97dc
3.123.151.221 0:0:0:0:0:ffff:37b:97dd
3.123.151.222 0:0:0:0:0:ffff:37b:97de
3.123.151.223 0:0:0:0:0:ffff:37b:97df
3.123.151.224 0:0:0:0:0:ffff:37b:97e0
3.123.151.225 0:0:0:0:0:ffff:37b:97e1
3.123.151.226 0:0:0:0:0:ffff:37b:97e2
3.123.151.227 0:0:0:0:0:ffff:37b:97e3
3.123.151.228 0:0:0:0:0:ffff:37b:97e4
3.123.151.229 0:0:0:0:0:ffff:37b:97e5
3.123.151.230 0:0:0:0:0:ffff:37b:97e6
3.123.151.231 0:0:0:0:0:ffff:37b:97e7
3.123.151.232 0:0:0:0:0:ffff:37b:97e8
3.123.151.233 0:0:0:0:0:ffff:37b:97e9
3.123.151.234 0:0:0:0:0:ffff:37b:97ea
3.123.151.235 0:0:0:0:0:ffff:37b:97eb
3.123.151.236 0:0:0:0:0:ffff:37b:97ec
3.123.151.237 0:0:0:0:0:ffff:37b:97ed
3.123.151.238 0:0:0:0:0:ffff:37b:97ee
3.123.151.239 0:0:0:0:0:ffff:37b:97ef
3.123.151.240 0:0:0:0:0:ffff:37b:97f0
3.123.151.241 0:0:0:0:0:ffff:37b:97f1
3.123.151.242 0:0:0:0:0:ffff:37b:97f2
3.123.151.243 0:0:0:0:0:ffff:37b:97f3
3.123.151.244 0:0:0:0:0:ffff:37b:97f4
3.123.151.245 0:0:0:0:0:ffff:37b:97f5
3.123.151.246 0:0:0:0:0:ffff:37b:97f6
3.123.151.247 0:0:0:0:0:ffff:37b:97f7
3.123.151.248 0:0:0:0:0:ffff:37b:97f8
3.123.151.249 0:0:0:0:0:ffff:37b:97f9
3.123.151.250 0:0:0:0:0:ffff:37b:97fa
3.123.151.251 0:0:0:0:0:ffff:37b:97fb
3.123.151.252 0:0:0:0:0:ffff:37b:97fc
3.123.151.253 0:0:0:0:0:ffff:37b:97fd
3.123.151.254 0:0:0:0:0:ffff:37b:97fe
3.123.151.255 0:0:0:0:0:ffff:37b:97ff


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.