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
21.15.167.1 0:0:0:0:0:ffff:150f:a701
21.15.167.2 0:0:0:0:0:ffff:150f:a702
21.15.167.3 0:0:0:0:0:ffff:150f:a703
21.15.167.4 0:0:0:0:0:ffff:150f:a704
21.15.167.5 0:0:0:0:0:ffff:150f:a705
21.15.167.6 0:0:0:0:0:ffff:150f:a706
21.15.167.7 0:0:0:0:0:ffff:150f:a707
21.15.167.8 0:0:0:0:0:ffff:150f:a708
21.15.167.9 0:0:0:0:0:ffff:150f:a709
21.15.167.10 0:0:0:0:0:ffff:150f:a70a
21.15.167.11 0:0:0:0:0:ffff:150f:a70b
21.15.167.12 0:0:0:0:0:ffff:150f:a70c
21.15.167.13 0:0:0:0:0:ffff:150f:a70d
21.15.167.14 0:0:0:0:0:ffff:150f:a70e
21.15.167.15 0:0:0:0:0:ffff:150f:a70f
21.15.167.16 0:0:0:0:0:ffff:150f:a710
21.15.167.17 0:0:0:0:0:ffff:150f:a711
21.15.167.18 0:0:0:0:0:ffff:150f:a712
21.15.167.19 0:0:0:0:0:ffff:150f:a713
21.15.167.20 0:0:0:0:0:ffff:150f:a714
21.15.167.21 0:0:0:0:0:ffff:150f:a715
21.15.167.22 0:0:0:0:0:ffff:150f:a716
21.15.167.23 0:0:0:0:0:ffff:150f:a717
21.15.167.24 0:0:0:0:0:ffff:150f:a718
21.15.167.25 0:0:0:0:0:ffff:150f:a719
21.15.167.26 0:0:0:0:0:ffff:150f:a71a
21.15.167.27 0:0:0:0:0:ffff:150f:a71b
21.15.167.28 0:0:0:0:0:ffff:150f:a71c
21.15.167.29 0:0:0:0:0:ffff:150f:a71d
21.15.167.30 0:0:0:0:0:ffff:150f:a71e
21.15.167.31 0:0:0:0:0:ffff:150f:a71f
21.15.167.32 0:0:0:0:0:ffff:150f:a720
21.15.167.33 0:0:0:0:0:ffff:150f:a721
21.15.167.34 0:0:0:0:0:ffff:150f:a722
21.15.167.35 0:0:0:0:0:ffff:150f:a723
21.15.167.36 0:0:0:0:0:ffff:150f:a724
21.15.167.37 0:0:0:0:0:ffff:150f:a725
21.15.167.38 0:0:0:0:0:ffff:150f:a726
21.15.167.39 0:0:0:0:0:ffff:150f:a727
21.15.167.40 0:0:0:0:0:ffff:150f:a728
21.15.167.41 0:0:0:0:0:ffff:150f:a729
21.15.167.42 0:0:0:0:0:ffff:150f:a72a
21.15.167.43 0:0:0:0:0:ffff:150f:a72b
21.15.167.44 0:0:0:0:0:ffff:150f:a72c
21.15.167.45 0:0:0:0:0:ffff:150f:a72d
21.15.167.46 0:0:0:0:0:ffff:150f:a72e
21.15.167.47 0:0:0:0:0:ffff:150f:a72f
21.15.167.48 0:0:0:0:0:ffff:150f:a730
21.15.167.49 0:0:0:0:0:ffff:150f:a731
21.15.167.50 0:0:0:0:0:ffff:150f:a732
21.15.167.51 0:0:0:0:0:ffff:150f:a733
21.15.167.52 0:0:0:0:0:ffff:150f:a734
21.15.167.53 0:0:0:0:0:ffff:150f:a735
21.15.167.54 0:0:0:0:0:ffff:150f:a736
21.15.167.55 0:0:0:0:0:ffff:150f:a737
21.15.167.56 0:0:0:0:0:ffff:150f:a738
21.15.167.57 0:0:0:0:0:ffff:150f:a739
21.15.167.58 0:0:0:0:0:ffff:150f:a73a
21.15.167.59 0:0:0:0:0:ffff:150f:a73b
21.15.167.60 0:0:0:0:0:ffff:150f:a73c


21.15.167.61 0:0:0:0:0:ffff:150f:a73d
21.15.167.62 0:0:0:0:0:ffff:150f:a73e
21.15.167.63 0:0:0:0:0:ffff:150f:a73f
21.15.167.64 0:0:0:0:0:ffff:150f:a740
21.15.167.65 0:0:0:0:0:ffff:150f:a741
21.15.167.66 0:0:0:0:0:ffff:150f:a742
21.15.167.67 0:0:0:0:0:ffff:150f:a743
21.15.167.68 0:0:0:0:0:ffff:150f:a744
21.15.167.69 0:0:0:0:0:ffff:150f:a745
21.15.167.70 0:0:0:0:0:ffff:150f:a746
21.15.167.71 0:0:0:0:0:ffff:150f:a747
21.15.167.72 0:0:0:0:0:ffff:150f:a748
21.15.167.73 0:0:0:0:0:ffff:150f:a749
21.15.167.74 0:0:0:0:0:ffff:150f:a74a
21.15.167.75 0:0:0:0:0:ffff:150f:a74b
21.15.167.76 0:0:0:0:0:ffff:150f:a74c
21.15.167.77 0:0:0:0:0:ffff:150f:a74d
21.15.167.78 0:0:0:0:0:ffff:150f:a74e
21.15.167.79 0:0:0:0:0:ffff:150f:a74f
21.15.167.80 0:0:0:0:0:ffff:150f:a750
21.15.167.81 0:0:0:0:0:ffff:150f:a751
21.15.167.82 0:0:0:0:0:ffff:150f:a752
21.15.167.83 0:0:0:0:0:ffff:150f:a753
21.15.167.84 0:0:0:0:0:ffff:150f:a754
21.15.167.85 0:0:0:0:0:ffff:150f:a755
21.15.167.86 0:0:0:0:0:ffff:150f:a756
21.15.167.87 0:0:0:0:0:ffff:150f:a757
21.15.167.88 0:0:0:0:0:ffff:150f:a758
21.15.167.89 0:0:0:0:0:ffff:150f:a759
21.15.167.90 0:0:0:0:0:ffff:150f:a75a
21.15.167.91 0:0:0:0:0:ffff:150f:a75b
21.15.167.92 0:0:0:0:0:ffff:150f:a75c
21.15.167.93 0:0:0:0:0:ffff:150f:a75d
21.15.167.94 0:0:0:0:0:ffff:150f:a75e
21.15.167.95 0:0:0:0:0:ffff:150f:a75f
21.15.167.96 0:0:0:0:0:ffff:150f:a760
21.15.167.97 0:0:0:0:0:ffff:150f:a761
21.15.167.98 0:0:0:0:0:ffff:150f:a762
21.15.167.99 0:0:0:0:0:ffff:150f:a763
21.15.167.100 0:0:0:0:0:ffff:150f:a764
21.15.167.101 0:0:0:0:0:ffff:150f:a765
21.15.167.102 0:0:0:0:0:ffff:150f:a766
21.15.167.103 0:0:0:0:0:ffff:150f:a767
21.15.167.104 0:0:0:0:0:ffff:150f:a768
21.15.167.105 0:0:0:0:0:ffff:150f:a769
21.15.167.106 0:0:0:0:0:ffff:150f:a76a
21.15.167.107 0:0:0:0:0:ffff:150f:a76b
21.15.167.108 0:0:0:0:0:ffff:150f:a76c
21.15.167.109 0:0:0:0:0:ffff:150f:a76d
21.15.167.110 0:0:0:0:0:ffff:150f:a76e
21.15.167.111 0:0:0:0:0:ffff:150f:a76f
21.15.167.112 0:0:0:0:0:ffff:150f:a770
21.15.167.113 0:0:0:0:0:ffff:150f:a771
21.15.167.114 0:0:0:0:0:ffff:150f:a772
21.15.167.115 0:0:0:0:0:ffff:150f:a773
21.15.167.116 0:0:0:0:0:ffff:150f:a774
21.15.167.117 0:0:0:0:0:ffff:150f:a775
21.15.167.118 0:0:0:0:0:ffff:150f:a776
21.15.167.119 0:0:0:0:0:ffff:150f:a777
21.15.167.120 0:0:0:0:0:ffff:150f:a778


21.15.167.121 0:0:0:0:0:ffff:150f:a779
21.15.167.122 0:0:0:0:0:ffff:150f:a77a
21.15.167.123 0:0:0:0:0:ffff:150f:a77b
21.15.167.124 0:0:0:0:0:ffff:150f:a77c
21.15.167.125 0:0:0:0:0:ffff:150f:a77d
21.15.167.126 0:0:0:0:0:ffff:150f:a77e
21.15.167.127 0:0:0:0:0:ffff:150f:a77f
21.15.167.128 0:0:0:0:0:ffff:150f:a780
21.15.167.129 0:0:0:0:0:ffff:150f:a781
21.15.167.130 0:0:0:0:0:ffff:150f:a782
21.15.167.131 0:0:0:0:0:ffff:150f:a783
21.15.167.132 0:0:0:0:0:ffff:150f:a784
21.15.167.133 0:0:0:0:0:ffff:150f:a785
21.15.167.134 0:0:0:0:0:ffff:150f:a786
21.15.167.135 0:0:0:0:0:ffff:150f:a787
21.15.167.136 0:0:0:0:0:ffff:150f:a788
21.15.167.137 0:0:0:0:0:ffff:150f:a789
21.15.167.138 0:0:0:0:0:ffff:150f:a78a
21.15.167.139 0:0:0:0:0:ffff:150f:a78b
21.15.167.140 0:0:0:0:0:ffff:150f:a78c
21.15.167.141 0:0:0:0:0:ffff:150f:a78d
21.15.167.142 0:0:0:0:0:ffff:150f:a78e
21.15.167.143 0:0:0:0:0:ffff:150f:a78f
21.15.167.144 0:0:0:0:0:ffff:150f:a790
21.15.167.145 0:0:0:0:0:ffff:150f:a791
21.15.167.146 0:0:0:0:0:ffff:150f:a792
21.15.167.147 0:0:0:0:0:ffff:150f:a793
21.15.167.148 0:0:0:0:0:ffff:150f:a794
21.15.167.149 0:0:0:0:0:ffff:150f:a795
21.15.167.150 0:0:0:0:0:ffff:150f:a796
21.15.167.151 0:0:0:0:0:ffff:150f:a797
21.15.167.152 0:0:0:0:0:ffff:150f:a798
21.15.167.153 0:0:0:0:0:ffff:150f:a799
21.15.167.154 0:0:0:0:0:ffff:150f:a79a
21.15.167.155 0:0:0:0:0:ffff:150f:a79b
21.15.167.156 0:0:0:0:0:ffff:150f:a79c
21.15.167.157 0:0:0:0:0:ffff:150f:a79d
21.15.167.158 0:0:0:0:0:ffff:150f:a79e
21.15.167.159 0:0:0:0:0:ffff:150f:a79f
21.15.167.160 0:0:0:0:0:ffff:150f:a7a0
21.15.167.161 0:0:0:0:0:ffff:150f:a7a1
21.15.167.162 0:0:0:0:0:ffff:150f:a7a2
21.15.167.163 0:0:0:0:0:ffff:150f:a7a3
21.15.167.164 0:0:0:0:0:ffff:150f:a7a4
21.15.167.165 0:0:0:0:0:ffff:150f:a7a5
21.15.167.166 0:0:0:0:0:ffff:150f:a7a6
21.15.167.167 0:0:0:0:0:ffff:150f:a7a7
21.15.167.168 0:0:0:0:0:ffff:150f:a7a8
21.15.167.169 0:0:0:0:0:ffff:150f:a7a9
21.15.167.170 0:0:0:0:0:ffff:150f:a7aa
21.15.167.171 0:0:0:0:0:ffff:150f:a7ab
21.15.167.172 0:0:0:0:0:ffff:150f:a7ac
21.15.167.173 0:0:0:0:0:ffff:150f:a7ad
21.15.167.174 0:0:0:0:0:ffff:150f:a7ae
21.15.167.175 0:0:0:0:0:ffff:150f:a7af
21.15.167.176 0:0:0:0:0:ffff:150f:a7b0
21.15.167.177 0:0:0:0:0:ffff:150f:a7b1
21.15.167.178 0:0:0:0:0:ffff:150f:a7b2
21.15.167.179 0:0:0:0:0:ffff:150f:a7b3
21.15.167.180 0:0:0:0:0:ffff:150f:a7b4


21.15.167.181 0:0:0:0:0:ffff:150f:a7b5
21.15.167.182 0:0:0:0:0:ffff:150f:a7b6
21.15.167.183 0:0:0:0:0:ffff:150f:a7b7
21.15.167.184 0:0:0:0:0:ffff:150f:a7b8
21.15.167.185 0:0:0:0:0:ffff:150f:a7b9
21.15.167.186 0:0:0:0:0:ffff:150f:a7ba
21.15.167.187 0:0:0:0:0:ffff:150f:a7bb
21.15.167.188 0:0:0:0:0:ffff:150f:a7bc
21.15.167.189 0:0:0:0:0:ffff:150f:a7bd
21.15.167.190 0:0:0:0:0:ffff:150f:a7be
21.15.167.191 0:0:0:0:0:ffff:150f:a7bf
21.15.167.192 0:0:0:0:0:ffff:150f:a7c0
21.15.167.193 0:0:0:0:0:ffff:150f:a7c1
21.15.167.194 0:0:0:0:0:ffff:150f:a7c2
21.15.167.195 0:0:0:0:0:ffff:150f:a7c3
21.15.167.196 0:0:0:0:0:ffff:150f:a7c4
21.15.167.197 0:0:0:0:0:ffff:150f:a7c5
21.15.167.198 0:0:0:0:0:ffff:150f:a7c6
21.15.167.199 0:0:0:0:0:ffff:150f:a7c7
21.15.167.200 0:0:0:0:0:ffff:150f:a7c8
21.15.167.201 0:0:0:0:0:ffff:150f:a7c9
21.15.167.202 0:0:0:0:0:ffff:150f:a7ca
21.15.167.203 0:0:0:0:0:ffff:150f:a7cb
21.15.167.204 0:0:0:0:0:ffff:150f:a7cc
21.15.167.205 0:0:0:0:0:ffff:150f:a7cd
21.15.167.206 0:0:0:0:0:ffff:150f:a7ce
21.15.167.207 0:0:0:0:0:ffff:150f:a7cf
21.15.167.208 0:0:0:0:0:ffff:150f:a7d0
21.15.167.209 0:0:0:0:0:ffff:150f:a7d1
21.15.167.210 0:0:0:0:0:ffff:150f:a7d2
21.15.167.211 0:0:0:0:0:ffff:150f:a7d3
21.15.167.212 0:0:0:0:0:ffff:150f:a7d4
21.15.167.213 0:0:0:0:0:ffff:150f:a7d5
21.15.167.214 0:0:0:0:0:ffff:150f:a7d6
21.15.167.215 0:0:0:0:0:ffff:150f:a7d7
21.15.167.216 0:0:0:0:0:ffff:150f:a7d8
21.15.167.217 0:0:0:0:0:ffff:150f:a7d9
21.15.167.218 0:0:0:0:0:ffff:150f:a7da
21.15.167.219 0:0:0:0:0:ffff:150f:a7db
21.15.167.220 0:0:0:0:0:ffff:150f:a7dc
21.15.167.221 0:0:0:0:0:ffff:150f:a7dd
21.15.167.222 0:0:0:0:0:ffff:150f:a7de
21.15.167.223 0:0:0:0:0:ffff:150f:a7df
21.15.167.224 0:0:0:0:0:ffff:150f:a7e0
21.15.167.225 0:0:0:0:0:ffff:150f:a7e1
21.15.167.226 0:0:0:0:0:ffff:150f:a7e2
21.15.167.227 0:0:0:0:0:ffff:150f:a7e3
21.15.167.228 0:0:0:0:0:ffff:150f:a7e4
21.15.167.229 0:0:0:0:0:ffff:150f:a7e5
21.15.167.230 0:0:0:0:0:ffff:150f:a7e6
21.15.167.231 0:0:0:0:0:ffff:150f:a7e7
21.15.167.232 0:0:0:0:0:ffff:150f:a7e8
21.15.167.233 0:0:0:0:0:ffff:150f:a7e9
21.15.167.234 0:0:0:0:0:ffff:150f:a7ea
21.15.167.235 0:0:0:0:0:ffff:150f:a7eb
21.15.167.236 0:0:0:0:0:ffff:150f:a7ec
21.15.167.237 0:0:0:0:0:ffff:150f:a7ed
21.15.167.238 0:0:0:0:0:ffff:150f:a7ee
21.15.167.239 0:0:0:0:0:ffff:150f:a7ef
21.15.167.240 0:0:0:0:0:ffff:150f:a7f0
21.15.167.241 0:0:0:0:0:ffff:150f:a7f1
21.15.167.242 0:0:0:0:0:ffff:150f:a7f2
21.15.167.243 0:0:0:0:0:ffff:150f:a7f3
21.15.167.244 0:0:0:0:0:ffff:150f:a7f4
21.15.167.245 0:0:0:0:0:ffff:150f:a7f5
21.15.167.246 0:0:0:0:0:ffff:150f:a7f6
21.15.167.247 0:0:0:0:0:ffff:150f:a7f7
21.15.167.248 0:0:0:0:0:ffff:150f:a7f8
21.15.167.249 0:0:0:0:0:ffff:150f:a7f9
21.15.167.250 0:0:0:0:0:ffff:150f:a7fa
21.15.167.251 0:0:0:0:0:ffff:150f:a7fb
21.15.167.252 0:0:0:0:0:ffff:150f:a7fc
21.15.167.253 0:0:0:0:0:ffff:150f:a7fd
21.15.167.254 0:0:0:0:0:ffff:150f:a7fe
21.15.167.255 0:0:0:0:0:ffff:150f:a7ff


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.