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
65.121.166.1 0:0:0:0:0:ffff:4179:a601
65.121.166.2 0:0:0:0:0:ffff:4179:a602
65.121.166.3 0:0:0:0:0:ffff:4179:a603
65.121.166.4 0:0:0:0:0:ffff:4179:a604
65.121.166.5 0:0:0:0:0:ffff:4179:a605
65.121.166.6 0:0:0:0:0:ffff:4179:a606
65.121.166.7 0:0:0:0:0:ffff:4179:a607
65.121.166.8 0:0:0:0:0:ffff:4179:a608
65.121.166.9 0:0:0:0:0:ffff:4179:a609
65.121.166.10 0:0:0:0:0:ffff:4179:a60a
65.121.166.11 0:0:0:0:0:ffff:4179:a60b
65.121.166.12 0:0:0:0:0:ffff:4179:a60c
65.121.166.13 0:0:0:0:0:ffff:4179:a60d
65.121.166.14 0:0:0:0:0:ffff:4179:a60e
65.121.166.15 0:0:0:0:0:ffff:4179:a60f
65.121.166.16 0:0:0:0:0:ffff:4179:a610
65.121.166.17 0:0:0:0:0:ffff:4179:a611
65.121.166.18 0:0:0:0:0:ffff:4179:a612
65.121.166.19 0:0:0:0:0:ffff:4179:a613
65.121.166.20 0:0:0:0:0:ffff:4179:a614
65.121.166.21 0:0:0:0:0:ffff:4179:a615
65.121.166.22 0:0:0:0:0:ffff:4179:a616
65.121.166.23 0:0:0:0:0:ffff:4179:a617
65.121.166.24 0:0:0:0:0:ffff:4179:a618
65.121.166.25 0:0:0:0:0:ffff:4179:a619
65.121.166.26 0:0:0:0:0:ffff:4179:a61a
65.121.166.27 0:0:0:0:0:ffff:4179:a61b
65.121.166.28 0:0:0:0:0:ffff:4179:a61c
65.121.166.29 0:0:0:0:0:ffff:4179:a61d
65.121.166.30 0:0:0:0:0:ffff:4179:a61e
65.121.166.31 0:0:0:0:0:ffff:4179:a61f
65.121.166.32 0:0:0:0:0:ffff:4179:a620
65.121.166.33 0:0:0:0:0:ffff:4179:a621
65.121.166.34 0:0:0:0:0:ffff:4179:a622
65.121.166.35 0:0:0:0:0:ffff:4179:a623
65.121.166.36 0:0:0:0:0:ffff:4179:a624
65.121.166.37 0:0:0:0:0:ffff:4179:a625
65.121.166.38 0:0:0:0:0:ffff:4179:a626
65.121.166.39 0:0:0:0:0:ffff:4179:a627
65.121.166.40 0:0:0:0:0:ffff:4179:a628
65.121.166.41 0:0:0:0:0:ffff:4179:a629
65.121.166.42 0:0:0:0:0:ffff:4179:a62a
65.121.166.43 0:0:0:0:0:ffff:4179:a62b
65.121.166.44 0:0:0:0:0:ffff:4179:a62c
65.121.166.45 0:0:0:0:0:ffff:4179:a62d
65.121.166.46 0:0:0:0:0:ffff:4179:a62e
65.121.166.47 0:0:0:0:0:ffff:4179:a62f
65.121.166.48 0:0:0:0:0:ffff:4179:a630
65.121.166.49 0:0:0:0:0:ffff:4179:a631
65.121.166.50 0:0:0:0:0:ffff:4179:a632
65.121.166.51 0:0:0:0:0:ffff:4179:a633
65.121.166.52 0:0:0:0:0:ffff:4179:a634
65.121.166.53 0:0:0:0:0:ffff:4179:a635
65.121.166.54 0:0:0:0:0:ffff:4179:a636
65.121.166.55 0:0:0:0:0:ffff:4179:a637
65.121.166.56 0:0:0:0:0:ffff:4179:a638
65.121.166.57 0:0:0:0:0:ffff:4179:a639
65.121.166.58 0:0:0:0:0:ffff:4179:a63a
65.121.166.59 0:0:0:0:0:ffff:4179:a63b
65.121.166.60 0:0:0:0:0:ffff:4179:a63c


65.121.166.61 0:0:0:0:0:ffff:4179:a63d
65.121.166.62 0:0:0:0:0:ffff:4179:a63e
65.121.166.63 0:0:0:0:0:ffff:4179:a63f
65.121.166.64 0:0:0:0:0:ffff:4179:a640
65.121.166.65 0:0:0:0:0:ffff:4179:a641
65.121.166.66 0:0:0:0:0:ffff:4179:a642
65.121.166.67 0:0:0:0:0:ffff:4179:a643
65.121.166.68 0:0:0:0:0:ffff:4179:a644
65.121.166.69 0:0:0:0:0:ffff:4179:a645
65.121.166.70 0:0:0:0:0:ffff:4179:a646
65.121.166.71 0:0:0:0:0:ffff:4179:a647
65.121.166.72 0:0:0:0:0:ffff:4179:a648
65.121.166.73 0:0:0:0:0:ffff:4179:a649
65.121.166.74 0:0:0:0:0:ffff:4179:a64a
65.121.166.75 0:0:0:0:0:ffff:4179:a64b
65.121.166.76 0:0:0:0:0:ffff:4179:a64c
65.121.166.77 0:0:0:0:0:ffff:4179:a64d
65.121.166.78 0:0:0:0:0:ffff:4179:a64e
65.121.166.79 0:0:0:0:0:ffff:4179:a64f
65.121.166.80 0:0:0:0:0:ffff:4179:a650
65.121.166.81 0:0:0:0:0:ffff:4179:a651
65.121.166.82 0:0:0:0:0:ffff:4179:a652
65.121.166.83 0:0:0:0:0:ffff:4179:a653
65.121.166.84 0:0:0:0:0:ffff:4179:a654
65.121.166.85 0:0:0:0:0:ffff:4179:a655
65.121.166.86 0:0:0:0:0:ffff:4179:a656
65.121.166.87 0:0:0:0:0:ffff:4179:a657
65.121.166.88 0:0:0:0:0:ffff:4179:a658
65.121.166.89 0:0:0:0:0:ffff:4179:a659
65.121.166.90 0:0:0:0:0:ffff:4179:a65a
65.121.166.91 0:0:0:0:0:ffff:4179:a65b
65.121.166.92 0:0:0:0:0:ffff:4179:a65c
65.121.166.93 0:0:0:0:0:ffff:4179:a65d
65.121.166.94 0:0:0:0:0:ffff:4179:a65e
65.121.166.95 0:0:0:0:0:ffff:4179:a65f
65.121.166.96 0:0:0:0:0:ffff:4179:a660
65.121.166.97 0:0:0:0:0:ffff:4179:a661
65.121.166.98 0:0:0:0:0:ffff:4179:a662
65.121.166.99 0:0:0:0:0:ffff:4179:a663
65.121.166.100 0:0:0:0:0:ffff:4179:a664
65.121.166.101 0:0:0:0:0:ffff:4179:a665
65.121.166.102 0:0:0:0:0:ffff:4179:a666
65.121.166.103 0:0:0:0:0:ffff:4179:a667
65.121.166.104 0:0:0:0:0:ffff:4179:a668
65.121.166.105 0:0:0:0:0:ffff:4179:a669
65.121.166.106 0:0:0:0:0:ffff:4179:a66a
65.121.166.107 0:0:0:0:0:ffff:4179:a66b
65.121.166.108 0:0:0:0:0:ffff:4179:a66c
65.121.166.109 0:0:0:0:0:ffff:4179:a66d
65.121.166.110 0:0:0:0:0:ffff:4179:a66e
65.121.166.111 0:0:0:0:0:ffff:4179:a66f
65.121.166.112 0:0:0:0:0:ffff:4179:a670
65.121.166.113 0:0:0:0:0:ffff:4179:a671
65.121.166.114 0:0:0:0:0:ffff:4179:a672
65.121.166.115 0:0:0:0:0:ffff:4179:a673
65.121.166.116 0:0:0:0:0:ffff:4179:a674
65.121.166.117 0:0:0:0:0:ffff:4179:a675
65.121.166.118 0:0:0:0:0:ffff:4179:a676
65.121.166.119 0:0:0:0:0:ffff:4179:a677
65.121.166.120 0:0:0:0:0:ffff:4179:a678


65.121.166.121 0:0:0:0:0:ffff:4179:a679
65.121.166.122 0:0:0:0:0:ffff:4179:a67a
65.121.166.123 0:0:0:0:0:ffff:4179:a67b
65.121.166.124 0:0:0:0:0:ffff:4179:a67c
65.121.166.125 0:0:0:0:0:ffff:4179:a67d
65.121.166.126 0:0:0:0:0:ffff:4179:a67e
65.121.166.127 0:0:0:0:0:ffff:4179:a67f
65.121.166.128 0:0:0:0:0:ffff:4179:a680
65.121.166.129 0:0:0:0:0:ffff:4179:a681
65.121.166.130 0:0:0:0:0:ffff:4179:a682
65.121.166.131 0:0:0:0:0:ffff:4179:a683
65.121.166.132 0:0:0:0:0:ffff:4179:a684
65.121.166.133 0:0:0:0:0:ffff:4179:a685
65.121.166.134 0:0:0:0:0:ffff:4179:a686
65.121.166.135 0:0:0:0:0:ffff:4179:a687
65.121.166.136 0:0:0:0:0:ffff:4179:a688
65.121.166.137 0:0:0:0:0:ffff:4179:a689
65.121.166.138 0:0:0:0:0:ffff:4179:a68a
65.121.166.139 0:0:0:0:0:ffff:4179:a68b
65.121.166.140 0:0:0:0:0:ffff:4179:a68c
65.121.166.141 0:0:0:0:0:ffff:4179:a68d
65.121.166.142 0:0:0:0:0:ffff:4179:a68e
65.121.166.143 0:0:0:0:0:ffff:4179:a68f
65.121.166.144 0:0:0:0:0:ffff:4179:a690
65.121.166.145 0:0:0:0:0:ffff:4179:a691
65.121.166.146 0:0:0:0:0:ffff:4179:a692
65.121.166.147 0:0:0:0:0:ffff:4179:a693
65.121.166.148 0:0:0:0:0:ffff:4179:a694
65.121.166.149 0:0:0:0:0:ffff:4179:a695
65.121.166.150 0:0:0:0:0:ffff:4179:a696
65.121.166.151 0:0:0:0:0:ffff:4179:a697
65.121.166.152 0:0:0:0:0:ffff:4179:a698
65.121.166.153 0:0:0:0:0:ffff:4179:a699
65.121.166.154 0:0:0:0:0:ffff:4179:a69a
65.121.166.155 0:0:0:0:0:ffff:4179:a69b
65.121.166.156 0:0:0:0:0:ffff:4179:a69c
65.121.166.157 0:0:0:0:0:ffff:4179:a69d
65.121.166.158 0:0:0:0:0:ffff:4179:a69e
65.121.166.159 0:0:0:0:0:ffff:4179:a69f
65.121.166.160 0:0:0:0:0:ffff:4179:a6a0
65.121.166.161 0:0:0:0:0:ffff:4179:a6a1
65.121.166.162 0:0:0:0:0:ffff:4179:a6a2
65.121.166.163 0:0:0:0:0:ffff:4179:a6a3
65.121.166.164 0:0:0:0:0:ffff:4179:a6a4
65.121.166.165 0:0:0:0:0:ffff:4179:a6a5
65.121.166.166 0:0:0:0:0:ffff:4179:a6a6
65.121.166.167 0:0:0:0:0:ffff:4179:a6a7
65.121.166.168 0:0:0:0:0:ffff:4179:a6a8
65.121.166.169 0:0:0:0:0:ffff:4179:a6a9
65.121.166.170 0:0:0:0:0:ffff:4179:a6aa
65.121.166.171 0:0:0:0:0:ffff:4179:a6ab
65.121.166.172 0:0:0:0:0:ffff:4179:a6ac
65.121.166.173 0:0:0:0:0:ffff:4179:a6ad
65.121.166.174 0:0:0:0:0:ffff:4179:a6ae
65.121.166.175 0:0:0:0:0:ffff:4179:a6af
65.121.166.176 0:0:0:0:0:ffff:4179:a6b0
65.121.166.177 0:0:0:0:0:ffff:4179:a6b1
65.121.166.178 0:0:0:0:0:ffff:4179:a6b2
65.121.166.179 0:0:0:0:0:ffff:4179:a6b3
65.121.166.180 0:0:0:0:0:ffff:4179:a6b4


65.121.166.181 0:0:0:0:0:ffff:4179:a6b5
65.121.166.182 0:0:0:0:0:ffff:4179:a6b6
65.121.166.183 0:0:0:0:0:ffff:4179:a6b7
65.121.166.184 0:0:0:0:0:ffff:4179:a6b8
65.121.166.185 0:0:0:0:0:ffff:4179:a6b9
65.121.166.186 0:0:0:0:0:ffff:4179:a6ba
65.121.166.187 0:0:0:0:0:ffff:4179:a6bb
65.121.166.188 0:0:0:0:0:ffff:4179:a6bc
65.121.166.189 0:0:0:0:0:ffff:4179:a6bd
65.121.166.190 0:0:0:0:0:ffff:4179:a6be
65.121.166.191 0:0:0:0:0:ffff:4179:a6bf
65.121.166.192 0:0:0:0:0:ffff:4179:a6c0
65.121.166.193 0:0:0:0:0:ffff:4179:a6c1
65.121.166.194 0:0:0:0:0:ffff:4179:a6c2
65.121.166.195 0:0:0:0:0:ffff:4179:a6c3
65.121.166.196 0:0:0:0:0:ffff:4179:a6c4
65.121.166.197 0:0:0:0:0:ffff:4179:a6c5
65.121.166.198 0:0:0:0:0:ffff:4179:a6c6
65.121.166.199 0:0:0:0:0:ffff:4179:a6c7
65.121.166.200 0:0:0:0:0:ffff:4179:a6c8
65.121.166.201 0:0:0:0:0:ffff:4179:a6c9
65.121.166.202 0:0:0:0:0:ffff:4179:a6ca
65.121.166.203 0:0:0:0:0:ffff:4179:a6cb
65.121.166.204 0:0:0:0:0:ffff:4179:a6cc
65.121.166.205 0:0:0:0:0:ffff:4179:a6cd
65.121.166.206 0:0:0:0:0:ffff:4179:a6ce
65.121.166.207 0:0:0:0:0:ffff:4179:a6cf
65.121.166.208 0:0:0:0:0:ffff:4179:a6d0
65.121.166.209 0:0:0:0:0:ffff:4179:a6d1
65.121.166.210 0:0:0:0:0:ffff:4179:a6d2
65.121.166.211 0:0:0:0:0:ffff:4179:a6d3
65.121.166.212 0:0:0:0:0:ffff:4179:a6d4
65.121.166.213 0:0:0:0:0:ffff:4179:a6d5
65.121.166.214 0:0:0:0:0:ffff:4179:a6d6
65.121.166.215 0:0:0:0:0:ffff:4179:a6d7
65.121.166.216 0:0:0:0:0:ffff:4179:a6d8
65.121.166.217 0:0:0:0:0:ffff:4179:a6d9
65.121.166.218 0:0:0:0:0:ffff:4179:a6da
65.121.166.219 0:0:0:0:0:ffff:4179:a6db
65.121.166.220 0:0:0:0:0:ffff:4179:a6dc
65.121.166.221 0:0:0:0:0:ffff:4179:a6dd
65.121.166.222 0:0:0:0:0:ffff:4179:a6de
65.121.166.223 0:0:0:0:0:ffff:4179:a6df
65.121.166.224 0:0:0:0:0:ffff:4179:a6e0
65.121.166.225 0:0:0:0:0:ffff:4179:a6e1
65.121.166.226 0:0:0:0:0:ffff:4179:a6e2
65.121.166.227 0:0:0:0:0:ffff:4179:a6e3
65.121.166.228 0:0:0:0:0:ffff:4179:a6e4
65.121.166.229 0:0:0:0:0:ffff:4179:a6e5
65.121.166.230 0:0:0:0:0:ffff:4179:a6e6
65.121.166.231 0:0:0:0:0:ffff:4179:a6e7
65.121.166.232 0:0:0:0:0:ffff:4179:a6e8
65.121.166.233 0:0:0:0:0:ffff:4179:a6e9
65.121.166.234 0:0:0:0:0:ffff:4179:a6ea
65.121.166.235 0:0:0:0:0:ffff:4179:a6eb
65.121.166.236 0:0:0:0:0:ffff:4179:a6ec
65.121.166.237 0:0:0:0:0:ffff:4179:a6ed
65.121.166.238 0:0:0:0:0:ffff:4179:a6ee
65.121.166.239 0:0:0:0:0:ffff:4179:a6ef
65.121.166.240 0:0:0:0:0:ffff:4179:a6f0
65.121.166.241 0:0:0:0:0:ffff:4179:a6f1
65.121.166.242 0:0:0:0:0:ffff:4179:a6f2
65.121.166.243 0:0:0:0:0:ffff:4179:a6f3
65.121.166.244 0:0:0:0:0:ffff:4179:a6f4
65.121.166.245 0:0:0:0:0:ffff:4179:a6f5
65.121.166.246 0:0:0:0:0:ffff:4179:a6f6
65.121.166.247 0:0:0:0:0:ffff:4179:a6f7
65.121.166.248 0:0:0:0:0:ffff:4179:a6f8
65.121.166.249 0:0:0:0:0:ffff:4179:a6f9
65.121.166.250 0:0:0:0:0:ffff:4179:a6fa
65.121.166.251 0:0:0:0:0:ffff:4179:a6fb
65.121.166.252 0:0:0:0:0:ffff:4179:a6fc
65.121.166.253 0:0:0:0:0:ffff:4179:a6fd
65.121.166.254 0:0:0:0:0:ffff:4179:a6fe
65.121.166.255 0:0:0:0:0:ffff:4179:a6ff


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.