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
65.121.212.1 0:0:0:0:0:ffff:4179:d401
65.121.212.2 0:0:0:0:0:ffff:4179:d402
65.121.212.3 0:0:0:0:0:ffff:4179:d403
65.121.212.4 0:0:0:0:0:ffff:4179:d404
65.121.212.5 0:0:0:0:0:ffff:4179:d405
65.121.212.6 0:0:0:0:0:ffff:4179:d406
65.121.212.7 0:0:0:0:0:ffff:4179:d407
65.121.212.8 0:0:0:0:0:ffff:4179:d408
65.121.212.9 0:0:0:0:0:ffff:4179:d409
65.121.212.10 0:0:0:0:0:ffff:4179:d40a
65.121.212.11 0:0:0:0:0:ffff:4179:d40b
65.121.212.12 0:0:0:0:0:ffff:4179:d40c
65.121.212.13 0:0:0:0:0:ffff:4179:d40d
65.121.212.14 0:0:0:0:0:ffff:4179:d40e
65.121.212.15 0:0:0:0:0:ffff:4179:d40f
65.121.212.16 0:0:0:0:0:ffff:4179:d410
65.121.212.17 0:0:0:0:0:ffff:4179:d411
65.121.212.18 0:0:0:0:0:ffff:4179:d412
65.121.212.19 0:0:0:0:0:ffff:4179:d413
65.121.212.20 0:0:0:0:0:ffff:4179:d414
65.121.212.21 0:0:0:0:0:ffff:4179:d415
65.121.212.22 0:0:0:0:0:ffff:4179:d416
65.121.212.23 0:0:0:0:0:ffff:4179:d417
65.121.212.24 0:0:0:0:0:ffff:4179:d418
65.121.212.25 0:0:0:0:0:ffff:4179:d419
65.121.212.26 0:0:0:0:0:ffff:4179:d41a
65.121.212.27 0:0:0:0:0:ffff:4179:d41b
65.121.212.28 0:0:0:0:0:ffff:4179:d41c
65.121.212.29 0:0:0:0:0:ffff:4179:d41d
65.121.212.30 0:0:0:0:0:ffff:4179:d41e
65.121.212.31 0:0:0:0:0:ffff:4179:d41f
65.121.212.32 0:0:0:0:0:ffff:4179:d420
65.121.212.33 0:0:0:0:0:ffff:4179:d421
65.121.212.34 0:0:0:0:0:ffff:4179:d422
65.121.212.35 0:0:0:0:0:ffff:4179:d423
65.121.212.36 0:0:0:0:0:ffff:4179:d424
65.121.212.37 0:0:0:0:0:ffff:4179:d425
65.121.212.38 0:0:0:0:0:ffff:4179:d426
65.121.212.39 0:0:0:0:0:ffff:4179:d427
65.121.212.40 0:0:0:0:0:ffff:4179:d428
65.121.212.41 0:0:0:0:0:ffff:4179:d429
65.121.212.42 0:0:0:0:0:ffff:4179:d42a
65.121.212.43 0:0:0:0:0:ffff:4179:d42b
65.121.212.44 0:0:0:0:0:ffff:4179:d42c
65.121.212.45 0:0:0:0:0:ffff:4179:d42d
65.121.212.46 0:0:0:0:0:ffff:4179:d42e
65.121.212.47 0:0:0:0:0:ffff:4179:d42f
65.121.212.48 0:0:0:0:0:ffff:4179:d430
65.121.212.49 0:0:0:0:0:ffff:4179:d431
65.121.212.50 0:0:0:0:0:ffff:4179:d432
65.121.212.51 0:0:0:0:0:ffff:4179:d433
65.121.212.52 0:0:0:0:0:ffff:4179:d434
65.121.212.53 0:0:0:0:0:ffff:4179:d435
65.121.212.54 0:0:0:0:0:ffff:4179:d436
65.121.212.55 0:0:0:0:0:ffff:4179:d437
65.121.212.56 0:0:0:0:0:ffff:4179:d438
65.121.212.57 0:0:0:0:0:ffff:4179:d439
65.121.212.58 0:0:0:0:0:ffff:4179:d43a
65.121.212.59 0:0:0:0:0:ffff:4179:d43b
65.121.212.60 0:0:0:0:0:ffff:4179:d43c


65.121.212.61 0:0:0:0:0:ffff:4179:d43d
65.121.212.62 0:0:0:0:0:ffff:4179:d43e
65.121.212.63 0:0:0:0:0:ffff:4179:d43f
65.121.212.64 0:0:0:0:0:ffff:4179:d440
65.121.212.65 0:0:0:0:0:ffff:4179:d441
65.121.212.66 0:0:0:0:0:ffff:4179:d442
65.121.212.67 0:0:0:0:0:ffff:4179:d443
65.121.212.68 0:0:0:0:0:ffff:4179:d444
65.121.212.69 0:0:0:0:0:ffff:4179:d445
65.121.212.70 0:0:0:0:0:ffff:4179:d446
65.121.212.71 0:0:0:0:0:ffff:4179:d447
65.121.212.72 0:0:0:0:0:ffff:4179:d448
65.121.212.73 0:0:0:0:0:ffff:4179:d449
65.121.212.74 0:0:0:0:0:ffff:4179:d44a
65.121.212.75 0:0:0:0:0:ffff:4179:d44b
65.121.212.76 0:0:0:0:0:ffff:4179:d44c
65.121.212.77 0:0:0:0:0:ffff:4179:d44d
65.121.212.78 0:0:0:0:0:ffff:4179:d44e
65.121.212.79 0:0:0:0:0:ffff:4179:d44f
65.121.212.80 0:0:0:0:0:ffff:4179:d450
65.121.212.81 0:0:0:0:0:ffff:4179:d451
65.121.212.82 0:0:0:0:0:ffff:4179:d452
65.121.212.83 0:0:0:0:0:ffff:4179:d453
65.121.212.84 0:0:0:0:0:ffff:4179:d454
65.121.212.85 0:0:0:0:0:ffff:4179:d455
65.121.212.86 0:0:0:0:0:ffff:4179:d456
65.121.212.87 0:0:0:0:0:ffff:4179:d457
65.121.212.88 0:0:0:0:0:ffff:4179:d458
65.121.212.89 0:0:0:0:0:ffff:4179:d459
65.121.212.90 0:0:0:0:0:ffff:4179:d45a
65.121.212.91 0:0:0:0:0:ffff:4179:d45b
65.121.212.92 0:0:0:0:0:ffff:4179:d45c
65.121.212.93 0:0:0:0:0:ffff:4179:d45d
65.121.212.94 0:0:0:0:0:ffff:4179:d45e
65.121.212.95 0:0:0:0:0:ffff:4179:d45f
65.121.212.96 0:0:0:0:0:ffff:4179:d460
65.121.212.97 0:0:0:0:0:ffff:4179:d461
65.121.212.98 0:0:0:0:0:ffff:4179:d462
65.121.212.99 0:0:0:0:0:ffff:4179:d463
65.121.212.100 0:0:0:0:0:ffff:4179:d464
65.121.212.101 0:0:0:0:0:ffff:4179:d465
65.121.212.102 0:0:0:0:0:ffff:4179:d466
65.121.212.103 0:0:0:0:0:ffff:4179:d467
65.121.212.104 0:0:0:0:0:ffff:4179:d468
65.121.212.105 0:0:0:0:0:ffff:4179:d469
65.121.212.106 0:0:0:0:0:ffff:4179:d46a
65.121.212.107 0:0:0:0:0:ffff:4179:d46b
65.121.212.108 0:0:0:0:0:ffff:4179:d46c
65.121.212.109 0:0:0:0:0:ffff:4179:d46d
65.121.212.110 0:0:0:0:0:ffff:4179:d46e
65.121.212.111 0:0:0:0:0:ffff:4179:d46f
65.121.212.112 0:0:0:0:0:ffff:4179:d470
65.121.212.113 0:0:0:0:0:ffff:4179:d471
65.121.212.114 0:0:0:0:0:ffff:4179:d472
65.121.212.115 0:0:0:0:0:ffff:4179:d473
65.121.212.116 0:0:0:0:0:ffff:4179:d474
65.121.212.117 0:0:0:0:0:ffff:4179:d475
65.121.212.118 0:0:0:0:0:ffff:4179:d476
65.121.212.119 0:0:0:0:0:ffff:4179:d477
65.121.212.120 0:0:0:0:0:ffff:4179:d478


65.121.212.121 0:0:0:0:0:ffff:4179:d479
65.121.212.122 0:0:0:0:0:ffff:4179:d47a
65.121.212.123 0:0:0:0:0:ffff:4179:d47b
65.121.212.124 0:0:0:0:0:ffff:4179:d47c
65.121.212.125 0:0:0:0:0:ffff:4179:d47d
65.121.212.126 0:0:0:0:0:ffff:4179:d47e
65.121.212.127 0:0:0:0:0:ffff:4179:d47f
65.121.212.128 0:0:0:0:0:ffff:4179:d480
65.121.212.129 0:0:0:0:0:ffff:4179:d481
65.121.212.130 0:0:0:0:0:ffff:4179:d482
65.121.212.131 0:0:0:0:0:ffff:4179:d483
65.121.212.132 0:0:0:0:0:ffff:4179:d484
65.121.212.133 0:0:0:0:0:ffff:4179:d485
65.121.212.134 0:0:0:0:0:ffff:4179:d486
65.121.212.135 0:0:0:0:0:ffff:4179:d487
65.121.212.136 0:0:0:0:0:ffff:4179:d488
65.121.212.137 0:0:0:0:0:ffff:4179:d489
65.121.212.138 0:0:0:0:0:ffff:4179:d48a
65.121.212.139 0:0:0:0:0:ffff:4179:d48b
65.121.212.140 0:0:0:0:0:ffff:4179:d48c
65.121.212.141 0:0:0:0:0:ffff:4179:d48d
65.121.212.142 0:0:0:0:0:ffff:4179:d48e
65.121.212.143 0:0:0:0:0:ffff:4179:d48f
65.121.212.144 0:0:0:0:0:ffff:4179:d490
65.121.212.145 0:0:0:0:0:ffff:4179:d491
65.121.212.146 0:0:0:0:0:ffff:4179:d492
65.121.212.147 0:0:0:0:0:ffff:4179:d493
65.121.212.148 0:0:0:0:0:ffff:4179:d494
65.121.212.149 0:0:0:0:0:ffff:4179:d495
65.121.212.150 0:0:0:0:0:ffff:4179:d496
65.121.212.151 0:0:0:0:0:ffff:4179:d497
65.121.212.152 0:0:0:0:0:ffff:4179:d498
65.121.212.153 0:0:0:0:0:ffff:4179:d499
65.121.212.154 0:0:0:0:0:ffff:4179:d49a
65.121.212.155 0:0:0:0:0:ffff:4179:d49b
65.121.212.156 0:0:0:0:0:ffff:4179:d49c
65.121.212.157 0:0:0:0:0:ffff:4179:d49d
65.121.212.158 0:0:0:0:0:ffff:4179:d49e
65.121.212.159 0:0:0:0:0:ffff:4179:d49f
65.121.212.160 0:0:0:0:0:ffff:4179:d4a0
65.121.212.161 0:0:0:0:0:ffff:4179:d4a1
65.121.212.162 0:0:0:0:0:ffff:4179:d4a2
65.121.212.163 0:0:0:0:0:ffff:4179:d4a3
65.121.212.164 0:0:0:0:0:ffff:4179:d4a4
65.121.212.165 0:0:0:0:0:ffff:4179:d4a5
65.121.212.166 0:0:0:0:0:ffff:4179:d4a6
65.121.212.167 0:0:0:0:0:ffff:4179:d4a7
65.121.212.168 0:0:0:0:0:ffff:4179:d4a8
65.121.212.169 0:0:0:0:0:ffff:4179:d4a9
65.121.212.170 0:0:0:0:0:ffff:4179:d4aa
65.121.212.171 0:0:0:0:0:ffff:4179:d4ab
65.121.212.172 0:0:0:0:0:ffff:4179:d4ac
65.121.212.173 0:0:0:0:0:ffff:4179:d4ad
65.121.212.174 0:0:0:0:0:ffff:4179:d4ae
65.121.212.175 0:0:0:0:0:ffff:4179:d4af
65.121.212.176 0:0:0:0:0:ffff:4179:d4b0
65.121.212.177 0:0:0:0:0:ffff:4179:d4b1
65.121.212.178 0:0:0:0:0:ffff:4179:d4b2
65.121.212.179 0:0:0:0:0:ffff:4179:d4b3
65.121.212.180 0:0:0:0:0:ffff:4179:d4b4


65.121.212.181 0:0:0:0:0:ffff:4179:d4b5
65.121.212.182 0:0:0:0:0:ffff:4179:d4b6
65.121.212.183 0:0:0:0:0:ffff:4179:d4b7
65.121.212.184 0:0:0:0:0:ffff:4179:d4b8
65.121.212.185 0:0:0:0:0:ffff:4179:d4b9
65.121.212.186 0:0:0:0:0:ffff:4179:d4ba
65.121.212.187 0:0:0:0:0:ffff:4179:d4bb
65.121.212.188 0:0:0:0:0:ffff:4179:d4bc
65.121.212.189 0:0:0:0:0:ffff:4179:d4bd
65.121.212.190 0:0:0:0:0:ffff:4179:d4be
65.121.212.191 0:0:0:0:0:ffff:4179:d4bf
65.121.212.192 0:0:0:0:0:ffff:4179:d4c0
65.121.212.193 0:0:0:0:0:ffff:4179:d4c1
65.121.212.194 0:0:0:0:0:ffff:4179:d4c2
65.121.212.195 0:0:0:0:0:ffff:4179:d4c3
65.121.212.196 0:0:0:0:0:ffff:4179:d4c4
65.121.212.197 0:0:0:0:0:ffff:4179:d4c5
65.121.212.198 0:0:0:0:0:ffff:4179:d4c6
65.121.212.199 0:0:0:0:0:ffff:4179:d4c7
65.121.212.200 0:0:0:0:0:ffff:4179:d4c8
65.121.212.201 0:0:0:0:0:ffff:4179:d4c9
65.121.212.202 0:0:0:0:0:ffff:4179:d4ca
65.121.212.203 0:0:0:0:0:ffff:4179:d4cb
65.121.212.204 0:0:0:0:0:ffff:4179:d4cc
65.121.212.205 0:0:0:0:0:ffff:4179:d4cd
65.121.212.206 0:0:0:0:0:ffff:4179:d4ce
65.121.212.207 0:0:0:0:0:ffff:4179:d4cf
65.121.212.208 0:0:0:0:0:ffff:4179:d4d0
65.121.212.209 0:0:0:0:0:ffff:4179:d4d1
65.121.212.210 0:0:0:0:0:ffff:4179:d4d2
65.121.212.211 0:0:0:0:0:ffff:4179:d4d3
65.121.212.212 0:0:0:0:0:ffff:4179:d4d4
65.121.212.213 0:0:0:0:0:ffff:4179:d4d5
65.121.212.214 0:0:0:0:0:ffff:4179:d4d6
65.121.212.215 0:0:0:0:0:ffff:4179:d4d7
65.121.212.216 0:0:0:0:0:ffff:4179:d4d8
65.121.212.217 0:0:0:0:0:ffff:4179:d4d9
65.121.212.218 0:0:0:0:0:ffff:4179:d4da
65.121.212.219 0:0:0:0:0:ffff:4179:d4db
65.121.212.220 0:0:0:0:0:ffff:4179:d4dc
65.121.212.221 0:0:0:0:0:ffff:4179:d4dd
65.121.212.222 0:0:0:0:0:ffff:4179:d4de
65.121.212.223 0:0:0:0:0:ffff:4179:d4df
65.121.212.224 0:0:0:0:0:ffff:4179:d4e0
65.121.212.225 0:0:0:0:0:ffff:4179:d4e1
65.121.212.226 0:0:0:0:0:ffff:4179:d4e2
65.121.212.227 0:0:0:0:0:ffff:4179:d4e3
65.121.212.228 0:0:0:0:0:ffff:4179:d4e4
65.121.212.229 0:0:0:0:0:ffff:4179:d4e5
65.121.212.230 0:0:0:0:0:ffff:4179:d4e6
65.121.212.231 0:0:0:0:0:ffff:4179:d4e7
65.121.212.232 0:0:0:0:0:ffff:4179:d4e8
65.121.212.233 0:0:0:0:0:ffff:4179:d4e9
65.121.212.234 0:0:0:0:0:ffff:4179:d4ea
65.121.212.235 0:0:0:0:0:ffff:4179:d4eb
65.121.212.236 0:0:0:0:0:ffff:4179:d4ec
65.121.212.237 0:0:0:0:0:ffff:4179:d4ed
65.121.212.238 0:0:0:0:0:ffff:4179:d4ee
65.121.212.239 0:0:0:0:0:ffff:4179:d4ef
65.121.212.240 0:0:0:0:0:ffff:4179:d4f0
65.121.212.241 0:0:0:0:0:ffff:4179:d4f1
65.121.212.242 0:0:0:0:0:ffff:4179:d4f2
65.121.212.243 0:0:0:0:0:ffff:4179:d4f3
65.121.212.244 0:0:0:0:0:ffff:4179:d4f4
65.121.212.245 0:0:0:0:0:ffff:4179:d4f5
65.121.212.246 0:0:0:0:0:ffff:4179:d4f6
65.121.212.247 0:0:0:0:0:ffff:4179:d4f7
65.121.212.248 0:0:0:0:0:ffff:4179:d4f8
65.121.212.249 0:0:0:0:0:ffff:4179:d4f9
65.121.212.250 0:0:0:0:0:ffff:4179:d4fa
65.121.212.251 0:0:0:0:0:ffff:4179:d4fb
65.121.212.252 0:0:0:0:0:ffff:4179:d4fc
65.121.212.253 0:0:0:0:0:ffff:4179:d4fd
65.121.212.254 0:0:0:0:0:ffff:4179:d4fe
65.121.212.255 0:0:0:0:0:ffff:4179:d4ff


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.