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
144.21.87.1 0:0:0:0:0:ffff:9015:5701
144.21.87.2 0:0:0:0:0:ffff:9015:5702
144.21.87.3 0:0:0:0:0:ffff:9015:5703
144.21.87.4 0:0:0:0:0:ffff:9015:5704
144.21.87.5 0:0:0:0:0:ffff:9015:5705
144.21.87.6 0:0:0:0:0:ffff:9015:5706
144.21.87.7 0:0:0:0:0:ffff:9015:5707
144.21.87.8 0:0:0:0:0:ffff:9015:5708
144.21.87.9 0:0:0:0:0:ffff:9015:5709
144.21.87.10 0:0:0:0:0:ffff:9015:570a
144.21.87.11 0:0:0:0:0:ffff:9015:570b
144.21.87.12 0:0:0:0:0:ffff:9015:570c
144.21.87.13 0:0:0:0:0:ffff:9015:570d
144.21.87.14 0:0:0:0:0:ffff:9015:570e
144.21.87.15 0:0:0:0:0:ffff:9015:570f
144.21.87.16 0:0:0:0:0:ffff:9015:5710
144.21.87.17 0:0:0:0:0:ffff:9015:5711
144.21.87.18 0:0:0:0:0:ffff:9015:5712
144.21.87.19 0:0:0:0:0:ffff:9015:5713
144.21.87.20 0:0:0:0:0:ffff:9015:5714
144.21.87.21 0:0:0:0:0:ffff:9015:5715
144.21.87.22 0:0:0:0:0:ffff:9015:5716
144.21.87.23 0:0:0:0:0:ffff:9015:5717
144.21.87.24 0:0:0:0:0:ffff:9015:5718
144.21.87.25 0:0:0:0:0:ffff:9015:5719
144.21.87.26 0:0:0:0:0:ffff:9015:571a
144.21.87.27 0:0:0:0:0:ffff:9015:571b
144.21.87.28 0:0:0:0:0:ffff:9015:571c
144.21.87.29 0:0:0:0:0:ffff:9015:571d
144.21.87.30 0:0:0:0:0:ffff:9015:571e
144.21.87.31 0:0:0:0:0:ffff:9015:571f
144.21.87.32 0:0:0:0:0:ffff:9015:5720
144.21.87.33 0:0:0:0:0:ffff:9015:5721
144.21.87.34 0:0:0:0:0:ffff:9015:5722
144.21.87.35 0:0:0:0:0:ffff:9015:5723
144.21.87.36 0:0:0:0:0:ffff:9015:5724
144.21.87.37 0:0:0:0:0:ffff:9015:5725
144.21.87.38 0:0:0:0:0:ffff:9015:5726
144.21.87.39 0:0:0:0:0:ffff:9015:5727
144.21.87.40 0:0:0:0:0:ffff:9015:5728
144.21.87.41 0:0:0:0:0:ffff:9015:5729
144.21.87.42 0:0:0:0:0:ffff:9015:572a
144.21.87.43 0:0:0:0:0:ffff:9015:572b
144.21.87.44 0:0:0:0:0:ffff:9015:572c
144.21.87.45 0:0:0:0:0:ffff:9015:572d
144.21.87.46 0:0:0:0:0:ffff:9015:572e
144.21.87.47 0:0:0:0:0:ffff:9015:572f
144.21.87.48 0:0:0:0:0:ffff:9015:5730
144.21.87.49 0:0:0:0:0:ffff:9015:5731
144.21.87.50 0:0:0:0:0:ffff:9015:5732
144.21.87.51 0:0:0:0:0:ffff:9015:5733
144.21.87.52 0:0:0:0:0:ffff:9015:5734
144.21.87.53 0:0:0:0:0:ffff:9015:5735
144.21.87.54 0:0:0:0:0:ffff:9015:5736
144.21.87.55 0:0:0:0:0:ffff:9015:5737
144.21.87.56 0:0:0:0:0:ffff:9015:5738
144.21.87.57 0:0:0:0:0:ffff:9015:5739
144.21.87.58 0:0:0:0:0:ffff:9015:573a
144.21.87.59 0:0:0:0:0:ffff:9015:573b
144.21.87.60 0:0:0:0:0:ffff:9015:573c


144.21.87.61 0:0:0:0:0:ffff:9015:573d
144.21.87.62 0:0:0:0:0:ffff:9015:573e
144.21.87.63 0:0:0:0:0:ffff:9015:573f
144.21.87.64 0:0:0:0:0:ffff:9015:5740
144.21.87.65 0:0:0:0:0:ffff:9015:5741
144.21.87.66 0:0:0:0:0:ffff:9015:5742
144.21.87.67 0:0:0:0:0:ffff:9015:5743
144.21.87.68 0:0:0:0:0:ffff:9015:5744
144.21.87.69 0:0:0:0:0:ffff:9015:5745
144.21.87.70 0:0:0:0:0:ffff:9015:5746
144.21.87.71 0:0:0:0:0:ffff:9015:5747
144.21.87.72 0:0:0:0:0:ffff:9015:5748
144.21.87.73 0:0:0:0:0:ffff:9015:5749
144.21.87.74 0:0:0:0:0:ffff:9015:574a
144.21.87.75 0:0:0:0:0:ffff:9015:574b
144.21.87.76 0:0:0:0:0:ffff:9015:574c
144.21.87.77 0:0:0:0:0:ffff:9015:574d
144.21.87.78 0:0:0:0:0:ffff:9015:574e
144.21.87.79 0:0:0:0:0:ffff:9015:574f
144.21.87.80 0:0:0:0:0:ffff:9015:5750
144.21.87.81 0:0:0:0:0:ffff:9015:5751
144.21.87.82 0:0:0:0:0:ffff:9015:5752
144.21.87.83 0:0:0:0:0:ffff:9015:5753
144.21.87.84 0:0:0:0:0:ffff:9015:5754
144.21.87.85 0:0:0:0:0:ffff:9015:5755
144.21.87.86 0:0:0:0:0:ffff:9015:5756
144.21.87.87 0:0:0:0:0:ffff:9015:5757
144.21.87.88 0:0:0:0:0:ffff:9015:5758
144.21.87.89 0:0:0:0:0:ffff:9015:5759
144.21.87.90 0:0:0:0:0:ffff:9015:575a
144.21.87.91 0:0:0:0:0:ffff:9015:575b
144.21.87.92 0:0:0:0:0:ffff:9015:575c
144.21.87.93 0:0:0:0:0:ffff:9015:575d
144.21.87.94 0:0:0:0:0:ffff:9015:575e
144.21.87.95 0:0:0:0:0:ffff:9015:575f
144.21.87.96 0:0:0:0:0:ffff:9015:5760
144.21.87.97 0:0:0:0:0:ffff:9015:5761
144.21.87.98 0:0:0:0:0:ffff:9015:5762
144.21.87.99 0:0:0:0:0:ffff:9015:5763
144.21.87.100 0:0:0:0:0:ffff:9015:5764
144.21.87.101 0:0:0:0:0:ffff:9015:5765
144.21.87.102 0:0:0:0:0:ffff:9015:5766
144.21.87.103 0:0:0:0:0:ffff:9015:5767
144.21.87.104 0:0:0:0:0:ffff:9015:5768
144.21.87.105 0:0:0:0:0:ffff:9015:5769
144.21.87.106 0:0:0:0:0:ffff:9015:576a
144.21.87.107 0:0:0:0:0:ffff:9015:576b
144.21.87.108 0:0:0:0:0:ffff:9015:576c
144.21.87.109 0:0:0:0:0:ffff:9015:576d
144.21.87.110 0:0:0:0:0:ffff:9015:576e
144.21.87.111 0:0:0:0:0:ffff:9015:576f
144.21.87.112 0:0:0:0:0:ffff:9015:5770
144.21.87.113 0:0:0:0:0:ffff:9015:5771
144.21.87.114 0:0:0:0:0:ffff:9015:5772
144.21.87.115 0:0:0:0:0:ffff:9015:5773
144.21.87.116 0:0:0:0:0:ffff:9015:5774
144.21.87.117 0:0:0:0:0:ffff:9015:5775
144.21.87.118 0:0:0:0:0:ffff:9015:5776
144.21.87.119 0:0:0:0:0:ffff:9015:5777
144.21.87.120 0:0:0:0:0:ffff:9015:5778


144.21.87.121 0:0:0:0:0:ffff:9015:5779
144.21.87.122 0:0:0:0:0:ffff:9015:577a
144.21.87.123 0:0:0:0:0:ffff:9015:577b
144.21.87.124 0:0:0:0:0:ffff:9015:577c
144.21.87.125 0:0:0:0:0:ffff:9015:577d
144.21.87.126 0:0:0:0:0:ffff:9015:577e
144.21.87.127 0:0:0:0:0:ffff:9015:577f
144.21.87.128 0:0:0:0:0:ffff:9015:5780
144.21.87.129 0:0:0:0:0:ffff:9015:5781
144.21.87.130 0:0:0:0:0:ffff:9015:5782
144.21.87.131 0:0:0:0:0:ffff:9015:5783
144.21.87.132 0:0:0:0:0:ffff:9015:5784
144.21.87.133 0:0:0:0:0:ffff:9015:5785
144.21.87.134 0:0:0:0:0:ffff:9015:5786
144.21.87.135 0:0:0:0:0:ffff:9015:5787
144.21.87.136 0:0:0:0:0:ffff:9015:5788
144.21.87.137 0:0:0:0:0:ffff:9015:5789
144.21.87.138 0:0:0:0:0:ffff:9015:578a
144.21.87.139 0:0:0:0:0:ffff:9015:578b
144.21.87.140 0:0:0:0:0:ffff:9015:578c
144.21.87.141 0:0:0:0:0:ffff:9015:578d
144.21.87.142 0:0:0:0:0:ffff:9015:578e
144.21.87.143 0:0:0:0:0:ffff:9015:578f
144.21.87.144 0:0:0:0:0:ffff:9015:5790
144.21.87.145 0:0:0:0:0:ffff:9015:5791
144.21.87.146 0:0:0:0:0:ffff:9015:5792
144.21.87.147 0:0:0:0:0:ffff:9015:5793
144.21.87.148 0:0:0:0:0:ffff:9015:5794
144.21.87.149 0:0:0:0:0:ffff:9015:5795
144.21.87.150 0:0:0:0:0:ffff:9015:5796
144.21.87.151 0:0:0:0:0:ffff:9015:5797
144.21.87.152 0:0:0:0:0:ffff:9015:5798
144.21.87.153 0:0:0:0:0:ffff:9015:5799
144.21.87.154 0:0:0:0:0:ffff:9015:579a
144.21.87.155 0:0:0:0:0:ffff:9015:579b
144.21.87.156 0:0:0:0:0:ffff:9015:579c
144.21.87.157 0:0:0:0:0:ffff:9015:579d
144.21.87.158 0:0:0:0:0:ffff:9015:579e
144.21.87.159 0:0:0:0:0:ffff:9015:579f
144.21.87.160 0:0:0:0:0:ffff:9015:57a0
144.21.87.161 0:0:0:0:0:ffff:9015:57a1
144.21.87.162 0:0:0:0:0:ffff:9015:57a2
144.21.87.163 0:0:0:0:0:ffff:9015:57a3
144.21.87.164 0:0:0:0:0:ffff:9015:57a4
144.21.87.165 0:0:0:0:0:ffff:9015:57a5
144.21.87.166 0:0:0:0:0:ffff:9015:57a6
144.21.87.167 0:0:0:0:0:ffff:9015:57a7
144.21.87.168 0:0:0:0:0:ffff:9015:57a8
144.21.87.169 0:0:0:0:0:ffff:9015:57a9
144.21.87.170 0:0:0:0:0:ffff:9015:57aa
144.21.87.171 0:0:0:0:0:ffff:9015:57ab
144.21.87.172 0:0:0:0:0:ffff:9015:57ac
144.21.87.173 0:0:0:0:0:ffff:9015:57ad
144.21.87.174 0:0:0:0:0:ffff:9015:57ae
144.21.87.175 0:0:0:0:0:ffff:9015:57af
144.21.87.176 0:0:0:0:0:ffff:9015:57b0
144.21.87.177 0:0:0:0:0:ffff:9015:57b1
144.21.87.178 0:0:0:0:0:ffff:9015:57b2
144.21.87.179 0:0:0:0:0:ffff:9015:57b3
144.21.87.180 0:0:0:0:0:ffff:9015:57b4


144.21.87.181 0:0:0:0:0:ffff:9015:57b5
144.21.87.182 0:0:0:0:0:ffff:9015:57b6
144.21.87.183 0:0:0:0:0:ffff:9015:57b7
144.21.87.184 0:0:0:0:0:ffff:9015:57b8
144.21.87.185 0:0:0:0:0:ffff:9015:57b9
144.21.87.186 0:0:0:0:0:ffff:9015:57ba
144.21.87.187 0:0:0:0:0:ffff:9015:57bb
144.21.87.188 0:0:0:0:0:ffff:9015:57bc
144.21.87.189 0:0:0:0:0:ffff:9015:57bd
144.21.87.190 0:0:0:0:0:ffff:9015:57be
144.21.87.191 0:0:0:0:0:ffff:9015:57bf
144.21.87.192 0:0:0:0:0:ffff:9015:57c0
144.21.87.193 0:0:0:0:0:ffff:9015:57c1
144.21.87.194 0:0:0:0:0:ffff:9015:57c2
144.21.87.195 0:0:0:0:0:ffff:9015:57c3
144.21.87.196 0:0:0:0:0:ffff:9015:57c4
144.21.87.197 0:0:0:0:0:ffff:9015:57c5
144.21.87.198 0:0:0:0:0:ffff:9015:57c6
144.21.87.199 0:0:0:0:0:ffff:9015:57c7
144.21.87.200 0:0:0:0:0:ffff:9015:57c8
144.21.87.201 0:0:0:0:0:ffff:9015:57c9
144.21.87.202 0:0:0:0:0:ffff:9015:57ca
144.21.87.203 0:0:0:0:0:ffff:9015:57cb
144.21.87.204 0:0:0:0:0:ffff:9015:57cc
144.21.87.205 0:0:0:0:0:ffff:9015:57cd
144.21.87.206 0:0:0:0:0:ffff:9015:57ce
144.21.87.207 0:0:0:0:0:ffff:9015:57cf
144.21.87.208 0:0:0:0:0:ffff:9015:57d0
144.21.87.209 0:0:0:0:0:ffff:9015:57d1
144.21.87.210 0:0:0:0:0:ffff:9015:57d2
144.21.87.211 0:0:0:0:0:ffff:9015:57d3
144.21.87.212 0:0:0:0:0:ffff:9015:57d4
144.21.87.213 0:0:0:0:0:ffff:9015:57d5
144.21.87.214 0:0:0:0:0:ffff:9015:57d6
144.21.87.215 0:0:0:0:0:ffff:9015:57d7
144.21.87.216 0:0:0:0:0:ffff:9015:57d8
144.21.87.217 0:0:0:0:0:ffff:9015:57d9
144.21.87.218 0:0:0:0:0:ffff:9015:57da
144.21.87.219 0:0:0:0:0:ffff:9015:57db
144.21.87.220 0:0:0:0:0:ffff:9015:57dc
144.21.87.221 0:0:0:0:0:ffff:9015:57dd
144.21.87.222 0:0:0:0:0:ffff:9015:57de
144.21.87.223 0:0:0:0:0:ffff:9015:57df
144.21.87.224 0:0:0:0:0:ffff:9015:57e0
144.21.87.225 0:0:0:0:0:ffff:9015:57e1
144.21.87.226 0:0:0:0:0:ffff:9015:57e2
144.21.87.227 0:0:0:0:0:ffff:9015:57e3
144.21.87.228 0:0:0:0:0:ffff:9015:57e4
144.21.87.229 0:0:0:0:0:ffff:9015:57e5
144.21.87.230 0:0:0:0:0:ffff:9015:57e6
144.21.87.231 0:0:0:0:0:ffff:9015:57e7
144.21.87.232 0:0:0:0:0:ffff:9015:57e8
144.21.87.233 0:0:0:0:0:ffff:9015:57e9
144.21.87.234 0:0:0:0:0:ffff:9015:57ea
144.21.87.235 0:0:0:0:0:ffff:9015:57eb
144.21.87.236 0:0:0:0:0:ffff:9015:57ec
144.21.87.237 0:0:0:0:0:ffff:9015:57ed
144.21.87.238 0:0:0:0:0:ffff:9015:57ee
144.21.87.239 0:0:0:0:0:ffff:9015:57ef
144.21.87.240 0:0:0:0:0:ffff:9015:57f0
144.21.87.241 0:0:0:0:0:ffff:9015:57f1
144.21.87.242 0:0:0:0:0:ffff:9015:57f2
144.21.87.243 0:0:0:0:0:ffff:9015:57f3
144.21.87.244 0:0:0:0:0:ffff:9015:57f4
144.21.87.245 0:0:0:0:0:ffff:9015:57f5
144.21.87.246 0:0:0:0:0:ffff:9015:57f6
144.21.87.247 0:0:0:0:0:ffff:9015:57f7
144.21.87.248 0:0:0:0:0:ffff:9015:57f8
144.21.87.249 0:0:0:0:0:ffff:9015:57f9
144.21.87.250 0:0:0:0:0:ffff:9015:57fa
144.21.87.251 0:0:0:0:0:ffff:9015:57fb
144.21.87.252 0:0:0:0:0:ffff:9015:57fc
144.21.87.253 0:0:0:0:0:ffff:9015:57fd
144.21.87.254 0:0:0:0:0:ffff:9015:57fe
144.21.87.255 0:0:0:0:0:ffff:9015:57ff


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.