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
65.121.54.1 0:0:0:0:0:ffff:4179:3601
65.121.54.2 0:0:0:0:0:ffff:4179:3602
65.121.54.3 0:0:0:0:0:ffff:4179:3603
65.121.54.4 0:0:0:0:0:ffff:4179:3604
65.121.54.5 0:0:0:0:0:ffff:4179:3605
65.121.54.6 0:0:0:0:0:ffff:4179:3606
65.121.54.7 0:0:0:0:0:ffff:4179:3607
65.121.54.8 0:0:0:0:0:ffff:4179:3608
65.121.54.9 0:0:0:0:0:ffff:4179:3609
65.121.54.10 0:0:0:0:0:ffff:4179:360a
65.121.54.11 0:0:0:0:0:ffff:4179:360b
65.121.54.12 0:0:0:0:0:ffff:4179:360c
65.121.54.13 0:0:0:0:0:ffff:4179:360d
65.121.54.14 0:0:0:0:0:ffff:4179:360e
65.121.54.15 0:0:0:0:0:ffff:4179:360f
65.121.54.16 0:0:0:0:0:ffff:4179:3610
65.121.54.17 0:0:0:0:0:ffff:4179:3611
65.121.54.18 0:0:0:0:0:ffff:4179:3612
65.121.54.19 0:0:0:0:0:ffff:4179:3613
65.121.54.20 0:0:0:0:0:ffff:4179:3614
65.121.54.21 0:0:0:0:0:ffff:4179:3615
65.121.54.22 0:0:0:0:0:ffff:4179:3616
65.121.54.23 0:0:0:0:0:ffff:4179:3617
65.121.54.24 0:0:0:0:0:ffff:4179:3618
65.121.54.25 0:0:0:0:0:ffff:4179:3619
65.121.54.26 0:0:0:0:0:ffff:4179:361a
65.121.54.27 0:0:0:0:0:ffff:4179:361b
65.121.54.28 0:0:0:0:0:ffff:4179:361c
65.121.54.29 0:0:0:0:0:ffff:4179:361d
65.121.54.30 0:0:0:0:0:ffff:4179:361e
65.121.54.31 0:0:0:0:0:ffff:4179:361f
65.121.54.32 0:0:0:0:0:ffff:4179:3620
65.121.54.33 0:0:0:0:0:ffff:4179:3621
65.121.54.34 0:0:0:0:0:ffff:4179:3622
65.121.54.35 0:0:0:0:0:ffff:4179:3623
65.121.54.36 0:0:0:0:0:ffff:4179:3624
65.121.54.37 0:0:0:0:0:ffff:4179:3625
65.121.54.38 0:0:0:0:0:ffff:4179:3626
65.121.54.39 0:0:0:0:0:ffff:4179:3627
65.121.54.40 0:0:0:0:0:ffff:4179:3628
65.121.54.41 0:0:0:0:0:ffff:4179:3629
65.121.54.42 0:0:0:0:0:ffff:4179:362a
65.121.54.43 0:0:0:0:0:ffff:4179:362b
65.121.54.44 0:0:0:0:0:ffff:4179:362c
65.121.54.45 0:0:0:0:0:ffff:4179:362d
65.121.54.46 0:0:0:0:0:ffff:4179:362e
65.121.54.47 0:0:0:0:0:ffff:4179:362f
65.121.54.48 0:0:0:0:0:ffff:4179:3630
65.121.54.49 0:0:0:0:0:ffff:4179:3631
65.121.54.50 0:0:0:0:0:ffff:4179:3632
65.121.54.51 0:0:0:0:0:ffff:4179:3633
65.121.54.52 0:0:0:0:0:ffff:4179:3634
65.121.54.53 0:0:0:0:0:ffff:4179:3635
65.121.54.54 0:0:0:0:0:ffff:4179:3636
65.121.54.55 0:0:0:0:0:ffff:4179:3637
65.121.54.56 0:0:0:0:0:ffff:4179:3638
65.121.54.57 0:0:0:0:0:ffff:4179:3639
65.121.54.58 0:0:0:0:0:ffff:4179:363a
65.121.54.59 0:0:0:0:0:ffff:4179:363b
65.121.54.60 0:0:0:0:0:ffff:4179:363c


65.121.54.61 0:0:0:0:0:ffff:4179:363d
65.121.54.62 0:0:0:0:0:ffff:4179:363e
65.121.54.63 0:0:0:0:0:ffff:4179:363f
65.121.54.64 0:0:0:0:0:ffff:4179:3640
65.121.54.65 0:0:0:0:0:ffff:4179:3641
65.121.54.66 0:0:0:0:0:ffff:4179:3642
65.121.54.67 0:0:0:0:0:ffff:4179:3643
65.121.54.68 0:0:0:0:0:ffff:4179:3644
65.121.54.69 0:0:0:0:0:ffff:4179:3645
65.121.54.70 0:0:0:0:0:ffff:4179:3646
65.121.54.71 0:0:0:0:0:ffff:4179:3647
65.121.54.72 0:0:0:0:0:ffff:4179:3648
65.121.54.73 0:0:0:0:0:ffff:4179:3649
65.121.54.74 0:0:0:0:0:ffff:4179:364a
65.121.54.75 0:0:0:0:0:ffff:4179:364b
65.121.54.76 0:0:0:0:0:ffff:4179:364c
65.121.54.77 0:0:0:0:0:ffff:4179:364d
65.121.54.78 0:0:0:0:0:ffff:4179:364e
65.121.54.79 0:0:0:0:0:ffff:4179:364f
65.121.54.80 0:0:0:0:0:ffff:4179:3650
65.121.54.81 0:0:0:0:0:ffff:4179:3651
65.121.54.82 0:0:0:0:0:ffff:4179:3652
65.121.54.83 0:0:0:0:0:ffff:4179:3653
65.121.54.84 0:0:0:0:0:ffff:4179:3654
65.121.54.85 0:0:0:0:0:ffff:4179:3655
65.121.54.86 0:0:0:0:0:ffff:4179:3656
65.121.54.87 0:0:0:0:0:ffff:4179:3657
65.121.54.88 0:0:0:0:0:ffff:4179:3658
65.121.54.89 0:0:0:0:0:ffff:4179:3659
65.121.54.90 0:0:0:0:0:ffff:4179:365a
65.121.54.91 0:0:0:0:0:ffff:4179:365b
65.121.54.92 0:0:0:0:0:ffff:4179:365c
65.121.54.93 0:0:0:0:0:ffff:4179:365d
65.121.54.94 0:0:0:0:0:ffff:4179:365e
65.121.54.95 0:0:0:0:0:ffff:4179:365f
65.121.54.96 0:0:0:0:0:ffff:4179:3660
65.121.54.97 0:0:0:0:0:ffff:4179:3661
65.121.54.98 0:0:0:0:0:ffff:4179:3662
65.121.54.99 0:0:0:0:0:ffff:4179:3663
65.121.54.100 0:0:0:0:0:ffff:4179:3664
65.121.54.101 0:0:0:0:0:ffff:4179:3665
65.121.54.102 0:0:0:0:0:ffff:4179:3666
65.121.54.103 0:0:0:0:0:ffff:4179:3667
65.121.54.104 0:0:0:0:0:ffff:4179:3668
65.121.54.105 0:0:0:0:0:ffff:4179:3669
65.121.54.106 0:0:0:0:0:ffff:4179:366a
65.121.54.107 0:0:0:0:0:ffff:4179:366b
65.121.54.108 0:0:0:0:0:ffff:4179:366c
65.121.54.109 0:0:0:0:0:ffff:4179:366d
65.121.54.110 0:0:0:0:0:ffff:4179:366e
65.121.54.111 0:0:0:0:0:ffff:4179:366f
65.121.54.112 0:0:0:0:0:ffff:4179:3670
65.121.54.113 0:0:0:0:0:ffff:4179:3671
65.121.54.114 0:0:0:0:0:ffff:4179:3672
65.121.54.115 0:0:0:0:0:ffff:4179:3673
65.121.54.116 0:0:0:0:0:ffff:4179:3674
65.121.54.117 0:0:0:0:0:ffff:4179:3675
65.121.54.118 0:0:0:0:0:ffff:4179:3676
65.121.54.119 0:0:0:0:0:ffff:4179:3677
65.121.54.120 0:0:0:0:0:ffff:4179:3678


65.121.54.121 0:0:0:0:0:ffff:4179:3679
65.121.54.122 0:0:0:0:0:ffff:4179:367a
65.121.54.123 0:0:0:0:0:ffff:4179:367b
65.121.54.124 0:0:0:0:0:ffff:4179:367c
65.121.54.125 0:0:0:0:0:ffff:4179:367d
65.121.54.126 0:0:0:0:0:ffff:4179:367e
65.121.54.127 0:0:0:0:0:ffff:4179:367f
65.121.54.128 0:0:0:0:0:ffff:4179:3680
65.121.54.129 0:0:0:0:0:ffff:4179:3681
65.121.54.130 0:0:0:0:0:ffff:4179:3682
65.121.54.131 0:0:0:0:0:ffff:4179:3683
65.121.54.132 0:0:0:0:0:ffff:4179:3684
65.121.54.133 0:0:0:0:0:ffff:4179:3685
65.121.54.134 0:0:0:0:0:ffff:4179:3686
65.121.54.135 0:0:0:0:0:ffff:4179:3687
65.121.54.136 0:0:0:0:0:ffff:4179:3688
65.121.54.137 0:0:0:0:0:ffff:4179:3689
65.121.54.138 0:0:0:0:0:ffff:4179:368a
65.121.54.139 0:0:0:0:0:ffff:4179:368b
65.121.54.140 0:0:0:0:0:ffff:4179:368c
65.121.54.141 0:0:0:0:0:ffff:4179:368d
65.121.54.142 0:0:0:0:0:ffff:4179:368e
65.121.54.143 0:0:0:0:0:ffff:4179:368f
65.121.54.144 0:0:0:0:0:ffff:4179:3690
65.121.54.145 0:0:0:0:0:ffff:4179:3691
65.121.54.146 0:0:0:0:0:ffff:4179:3692
65.121.54.147 0:0:0:0:0:ffff:4179:3693
65.121.54.148 0:0:0:0:0:ffff:4179:3694
65.121.54.149 0:0:0:0:0:ffff:4179:3695
65.121.54.150 0:0:0:0:0:ffff:4179:3696
65.121.54.151 0:0:0:0:0:ffff:4179:3697
65.121.54.152 0:0:0:0:0:ffff:4179:3698
65.121.54.153 0:0:0:0:0:ffff:4179:3699
65.121.54.154 0:0:0:0:0:ffff:4179:369a
65.121.54.155 0:0:0:0:0:ffff:4179:369b
65.121.54.156 0:0:0:0:0:ffff:4179:369c
65.121.54.157 0:0:0:0:0:ffff:4179:369d
65.121.54.158 0:0:0:0:0:ffff:4179:369e
65.121.54.159 0:0:0:0:0:ffff:4179:369f
65.121.54.160 0:0:0:0:0:ffff:4179:36a0
65.121.54.161 0:0:0:0:0:ffff:4179:36a1
65.121.54.162 0:0:0:0:0:ffff:4179:36a2
65.121.54.163 0:0:0:0:0:ffff:4179:36a3
65.121.54.164 0:0:0:0:0:ffff:4179:36a4
65.121.54.165 0:0:0:0:0:ffff:4179:36a5
65.121.54.166 0:0:0:0:0:ffff:4179:36a6
65.121.54.167 0:0:0:0:0:ffff:4179:36a7
65.121.54.168 0:0:0:0:0:ffff:4179:36a8
65.121.54.169 0:0:0:0:0:ffff:4179:36a9
65.121.54.170 0:0:0:0:0:ffff:4179:36aa
65.121.54.171 0:0:0:0:0:ffff:4179:36ab
65.121.54.172 0:0:0:0:0:ffff:4179:36ac
65.121.54.173 0:0:0:0:0:ffff:4179:36ad
65.121.54.174 0:0:0:0:0:ffff:4179:36ae
65.121.54.175 0:0:0:0:0:ffff:4179:36af
65.121.54.176 0:0:0:0:0:ffff:4179:36b0
65.121.54.177 0:0:0:0:0:ffff:4179:36b1
65.121.54.178 0:0:0:0:0:ffff:4179:36b2
65.121.54.179 0:0:0:0:0:ffff:4179:36b3
65.121.54.180 0:0:0:0:0:ffff:4179:36b4


65.121.54.181 0:0:0:0:0:ffff:4179:36b5
65.121.54.182 0:0:0:0:0:ffff:4179:36b6
65.121.54.183 0:0:0:0:0:ffff:4179:36b7
65.121.54.184 0:0:0:0:0:ffff:4179:36b8
65.121.54.185 0:0:0:0:0:ffff:4179:36b9
65.121.54.186 0:0:0:0:0:ffff:4179:36ba
65.121.54.187 0:0:0:0:0:ffff:4179:36bb
65.121.54.188 0:0:0:0:0:ffff:4179:36bc
65.121.54.189 0:0:0:0:0:ffff:4179:36bd
65.121.54.190 0:0:0:0:0:ffff:4179:36be
65.121.54.191 0:0:0:0:0:ffff:4179:36bf
65.121.54.192 0:0:0:0:0:ffff:4179:36c0
65.121.54.193 0:0:0:0:0:ffff:4179:36c1
65.121.54.194 0:0:0:0:0:ffff:4179:36c2
65.121.54.195 0:0:0:0:0:ffff:4179:36c3
65.121.54.196 0:0:0:0:0:ffff:4179:36c4
65.121.54.197 0:0:0:0:0:ffff:4179:36c5
65.121.54.198 0:0:0:0:0:ffff:4179:36c6
65.121.54.199 0:0:0:0:0:ffff:4179:36c7
65.121.54.200 0:0:0:0:0:ffff:4179:36c8
65.121.54.201 0:0:0:0:0:ffff:4179:36c9
65.121.54.202 0:0:0:0:0:ffff:4179:36ca
65.121.54.203 0:0:0:0:0:ffff:4179:36cb
65.121.54.204 0:0:0:0:0:ffff:4179:36cc
65.121.54.205 0:0:0:0:0:ffff:4179:36cd
65.121.54.206 0:0:0:0:0:ffff:4179:36ce
65.121.54.207 0:0:0:0:0:ffff:4179:36cf
65.121.54.208 0:0:0:0:0:ffff:4179:36d0
65.121.54.209 0:0:0:0:0:ffff:4179:36d1
65.121.54.210 0:0:0:0:0:ffff:4179:36d2
65.121.54.211 0:0:0:0:0:ffff:4179:36d3
65.121.54.212 0:0:0:0:0:ffff:4179:36d4
65.121.54.213 0:0:0:0:0:ffff:4179:36d5
65.121.54.214 0:0:0:0:0:ffff:4179:36d6
65.121.54.215 0:0:0:0:0:ffff:4179:36d7
65.121.54.216 0:0:0:0:0:ffff:4179:36d8
65.121.54.217 0:0:0:0:0:ffff:4179:36d9
65.121.54.218 0:0:0:0:0:ffff:4179:36da
65.121.54.219 0:0:0:0:0:ffff:4179:36db
65.121.54.220 0:0:0:0:0:ffff:4179:36dc
65.121.54.221 0:0:0:0:0:ffff:4179:36dd
65.121.54.222 0:0:0:0:0:ffff:4179:36de
65.121.54.223 0:0:0:0:0:ffff:4179:36df
65.121.54.224 0:0:0:0:0:ffff:4179:36e0
65.121.54.225 0:0:0:0:0:ffff:4179:36e1
65.121.54.226 0:0:0:0:0:ffff:4179:36e2
65.121.54.227 0:0:0:0:0:ffff:4179:36e3
65.121.54.228 0:0:0:0:0:ffff:4179:36e4
65.121.54.229 0:0:0:0:0:ffff:4179:36e5
65.121.54.230 0:0:0:0:0:ffff:4179:36e6
65.121.54.231 0:0:0:0:0:ffff:4179:36e7
65.121.54.232 0:0:0:0:0:ffff:4179:36e8
65.121.54.233 0:0:0:0:0:ffff:4179:36e9
65.121.54.234 0:0:0:0:0:ffff:4179:36ea
65.121.54.235 0:0:0:0:0:ffff:4179:36eb
65.121.54.236 0:0:0:0:0:ffff:4179:36ec
65.121.54.237 0:0:0:0:0:ffff:4179:36ed
65.121.54.238 0:0:0:0:0:ffff:4179:36ee
65.121.54.239 0:0:0:0:0:ffff:4179:36ef
65.121.54.240 0:0:0:0:0:ffff:4179:36f0
65.121.54.241 0:0:0:0:0:ffff:4179:36f1
65.121.54.242 0:0:0:0:0:ffff:4179:36f2
65.121.54.243 0:0:0:0:0:ffff:4179:36f3
65.121.54.244 0:0:0:0:0:ffff:4179:36f4
65.121.54.245 0:0:0:0:0:ffff:4179:36f5
65.121.54.246 0:0:0:0:0:ffff:4179:36f6
65.121.54.247 0:0:0:0:0:ffff:4179:36f7
65.121.54.248 0:0:0:0:0:ffff:4179:36f8
65.121.54.249 0:0:0:0:0:ffff:4179:36f9
65.121.54.250 0:0:0:0:0:ffff:4179:36fa
65.121.54.251 0:0:0:0:0:ffff:4179:36fb
65.121.54.252 0:0:0:0:0:ffff:4179:36fc
65.121.54.253 0:0:0:0:0:ffff:4179:36fd
65.121.54.254 0:0:0:0:0:ffff:4179:36fe
65.121.54.255 0:0:0:0:0:ffff:4179:36ff


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.