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
255.66.196.1 0:0:0:0:0:ffff:ff42:c401
255.66.196.2 0:0:0:0:0:ffff:ff42:c402
255.66.196.3 0:0:0:0:0:ffff:ff42:c403
255.66.196.4 0:0:0:0:0:ffff:ff42:c404
255.66.196.5 0:0:0:0:0:ffff:ff42:c405
255.66.196.6 0:0:0:0:0:ffff:ff42:c406
255.66.196.7 0:0:0:0:0:ffff:ff42:c407
255.66.196.8 0:0:0:0:0:ffff:ff42:c408
255.66.196.9 0:0:0:0:0:ffff:ff42:c409
255.66.196.10 0:0:0:0:0:ffff:ff42:c40a
255.66.196.11 0:0:0:0:0:ffff:ff42:c40b
255.66.196.12 0:0:0:0:0:ffff:ff42:c40c
255.66.196.13 0:0:0:0:0:ffff:ff42:c40d
255.66.196.14 0:0:0:0:0:ffff:ff42:c40e
255.66.196.15 0:0:0:0:0:ffff:ff42:c40f
255.66.196.16 0:0:0:0:0:ffff:ff42:c410
255.66.196.17 0:0:0:0:0:ffff:ff42:c411
255.66.196.18 0:0:0:0:0:ffff:ff42:c412
255.66.196.19 0:0:0:0:0:ffff:ff42:c413
255.66.196.20 0:0:0:0:0:ffff:ff42:c414
255.66.196.21 0:0:0:0:0:ffff:ff42:c415
255.66.196.22 0:0:0:0:0:ffff:ff42:c416
255.66.196.23 0:0:0:0:0:ffff:ff42:c417
255.66.196.24 0:0:0:0:0:ffff:ff42:c418
255.66.196.25 0:0:0:0:0:ffff:ff42:c419
255.66.196.26 0:0:0:0:0:ffff:ff42:c41a
255.66.196.27 0:0:0:0:0:ffff:ff42:c41b
255.66.196.28 0:0:0:0:0:ffff:ff42:c41c
255.66.196.29 0:0:0:0:0:ffff:ff42:c41d
255.66.196.30 0:0:0:0:0:ffff:ff42:c41e
255.66.196.31 0:0:0:0:0:ffff:ff42:c41f
255.66.196.32 0:0:0:0:0:ffff:ff42:c420
255.66.196.33 0:0:0:0:0:ffff:ff42:c421
255.66.196.34 0:0:0:0:0:ffff:ff42:c422
255.66.196.35 0:0:0:0:0:ffff:ff42:c423
255.66.196.36 0:0:0:0:0:ffff:ff42:c424
255.66.196.37 0:0:0:0:0:ffff:ff42:c425
255.66.196.38 0:0:0:0:0:ffff:ff42:c426
255.66.196.39 0:0:0:0:0:ffff:ff42:c427
255.66.196.40 0:0:0:0:0:ffff:ff42:c428
255.66.196.41 0:0:0:0:0:ffff:ff42:c429
255.66.196.42 0:0:0:0:0:ffff:ff42:c42a
255.66.196.43 0:0:0:0:0:ffff:ff42:c42b
255.66.196.44 0:0:0:0:0:ffff:ff42:c42c
255.66.196.45 0:0:0:0:0:ffff:ff42:c42d
255.66.196.46 0:0:0:0:0:ffff:ff42:c42e
255.66.196.47 0:0:0:0:0:ffff:ff42:c42f
255.66.196.48 0:0:0:0:0:ffff:ff42:c430
255.66.196.49 0:0:0:0:0:ffff:ff42:c431
255.66.196.50 0:0:0:0:0:ffff:ff42:c432
255.66.196.51 0:0:0:0:0:ffff:ff42:c433
255.66.196.52 0:0:0:0:0:ffff:ff42:c434
255.66.196.53 0:0:0:0:0:ffff:ff42:c435
255.66.196.54 0:0:0:0:0:ffff:ff42:c436
255.66.196.55 0:0:0:0:0:ffff:ff42:c437
255.66.196.56 0:0:0:0:0:ffff:ff42:c438
255.66.196.57 0:0:0:0:0:ffff:ff42:c439
255.66.196.58 0:0:0:0:0:ffff:ff42:c43a
255.66.196.59 0:0:0:0:0:ffff:ff42:c43b
255.66.196.60 0:0:0:0:0:ffff:ff42:c43c


255.66.196.61 0:0:0:0:0:ffff:ff42:c43d
255.66.196.62 0:0:0:0:0:ffff:ff42:c43e
255.66.196.63 0:0:0:0:0:ffff:ff42:c43f
255.66.196.64 0:0:0:0:0:ffff:ff42:c440
255.66.196.65 0:0:0:0:0:ffff:ff42:c441
255.66.196.66 0:0:0:0:0:ffff:ff42:c442
255.66.196.67 0:0:0:0:0:ffff:ff42:c443
255.66.196.68 0:0:0:0:0:ffff:ff42:c444
255.66.196.69 0:0:0:0:0:ffff:ff42:c445
255.66.196.70 0:0:0:0:0:ffff:ff42:c446
255.66.196.71 0:0:0:0:0:ffff:ff42:c447
255.66.196.72 0:0:0:0:0:ffff:ff42:c448
255.66.196.73 0:0:0:0:0:ffff:ff42:c449
255.66.196.74 0:0:0:0:0:ffff:ff42:c44a
255.66.196.75 0:0:0:0:0:ffff:ff42:c44b
255.66.196.76 0:0:0:0:0:ffff:ff42:c44c
255.66.196.77 0:0:0:0:0:ffff:ff42:c44d
255.66.196.78 0:0:0:0:0:ffff:ff42:c44e
255.66.196.79 0:0:0:0:0:ffff:ff42:c44f
255.66.196.80 0:0:0:0:0:ffff:ff42:c450
255.66.196.81 0:0:0:0:0:ffff:ff42:c451
255.66.196.82 0:0:0:0:0:ffff:ff42:c452
255.66.196.83 0:0:0:0:0:ffff:ff42:c453
255.66.196.84 0:0:0:0:0:ffff:ff42:c454
255.66.196.85 0:0:0:0:0:ffff:ff42:c455
255.66.196.86 0:0:0:0:0:ffff:ff42:c456
255.66.196.87 0:0:0:0:0:ffff:ff42:c457
255.66.196.88 0:0:0:0:0:ffff:ff42:c458
255.66.196.89 0:0:0:0:0:ffff:ff42:c459
255.66.196.90 0:0:0:0:0:ffff:ff42:c45a
255.66.196.91 0:0:0:0:0:ffff:ff42:c45b
255.66.196.92 0:0:0:0:0:ffff:ff42:c45c
255.66.196.93 0:0:0:0:0:ffff:ff42:c45d
255.66.196.94 0:0:0:0:0:ffff:ff42:c45e
255.66.196.95 0:0:0:0:0:ffff:ff42:c45f
255.66.196.96 0:0:0:0:0:ffff:ff42:c460
255.66.196.97 0:0:0:0:0:ffff:ff42:c461
255.66.196.98 0:0:0:0:0:ffff:ff42:c462
255.66.196.99 0:0:0:0:0:ffff:ff42:c463
255.66.196.100 0:0:0:0:0:ffff:ff42:c464
255.66.196.101 0:0:0:0:0:ffff:ff42:c465
255.66.196.102 0:0:0:0:0:ffff:ff42:c466
255.66.196.103 0:0:0:0:0:ffff:ff42:c467
255.66.196.104 0:0:0:0:0:ffff:ff42:c468
255.66.196.105 0:0:0:0:0:ffff:ff42:c469
255.66.196.106 0:0:0:0:0:ffff:ff42:c46a
255.66.196.107 0:0:0:0:0:ffff:ff42:c46b
255.66.196.108 0:0:0:0:0:ffff:ff42:c46c
255.66.196.109 0:0:0:0:0:ffff:ff42:c46d
255.66.196.110 0:0:0:0:0:ffff:ff42:c46e
255.66.196.111 0:0:0:0:0:ffff:ff42:c46f
255.66.196.112 0:0:0:0:0:ffff:ff42:c470
255.66.196.113 0:0:0:0:0:ffff:ff42:c471
255.66.196.114 0:0:0:0:0:ffff:ff42:c472
255.66.196.115 0:0:0:0:0:ffff:ff42:c473
255.66.196.116 0:0:0:0:0:ffff:ff42:c474
255.66.196.117 0:0:0:0:0:ffff:ff42:c475
255.66.196.118 0:0:0:0:0:ffff:ff42:c476
255.66.196.119 0:0:0:0:0:ffff:ff42:c477
255.66.196.120 0:0:0:0:0:ffff:ff42:c478


255.66.196.121 0:0:0:0:0:ffff:ff42:c479
255.66.196.122 0:0:0:0:0:ffff:ff42:c47a
255.66.196.123 0:0:0:0:0:ffff:ff42:c47b
255.66.196.124 0:0:0:0:0:ffff:ff42:c47c
255.66.196.125 0:0:0:0:0:ffff:ff42:c47d
255.66.196.126 0:0:0:0:0:ffff:ff42:c47e
255.66.196.127 0:0:0:0:0:ffff:ff42:c47f
255.66.196.128 0:0:0:0:0:ffff:ff42:c480
255.66.196.129 0:0:0:0:0:ffff:ff42:c481
255.66.196.130 0:0:0:0:0:ffff:ff42:c482
255.66.196.131 0:0:0:0:0:ffff:ff42:c483
255.66.196.132 0:0:0:0:0:ffff:ff42:c484
255.66.196.133 0:0:0:0:0:ffff:ff42:c485
255.66.196.134 0:0:0:0:0:ffff:ff42:c486
255.66.196.135 0:0:0:0:0:ffff:ff42:c487
255.66.196.136 0:0:0:0:0:ffff:ff42:c488
255.66.196.137 0:0:0:0:0:ffff:ff42:c489
255.66.196.138 0:0:0:0:0:ffff:ff42:c48a
255.66.196.139 0:0:0:0:0:ffff:ff42:c48b
255.66.196.140 0:0:0:0:0:ffff:ff42:c48c
255.66.196.141 0:0:0:0:0:ffff:ff42:c48d
255.66.196.142 0:0:0:0:0:ffff:ff42:c48e
255.66.196.143 0:0:0:0:0:ffff:ff42:c48f
255.66.196.144 0:0:0:0:0:ffff:ff42:c490
255.66.196.145 0:0:0:0:0:ffff:ff42:c491
255.66.196.146 0:0:0:0:0:ffff:ff42:c492
255.66.196.147 0:0:0:0:0:ffff:ff42:c493
255.66.196.148 0:0:0:0:0:ffff:ff42:c494
255.66.196.149 0:0:0:0:0:ffff:ff42:c495
255.66.196.150 0:0:0:0:0:ffff:ff42:c496
255.66.196.151 0:0:0:0:0:ffff:ff42:c497
255.66.196.152 0:0:0:0:0:ffff:ff42:c498
255.66.196.153 0:0:0:0:0:ffff:ff42:c499
255.66.196.154 0:0:0:0:0:ffff:ff42:c49a
255.66.196.155 0:0:0:0:0:ffff:ff42:c49b
255.66.196.156 0:0:0:0:0:ffff:ff42:c49c
255.66.196.157 0:0:0:0:0:ffff:ff42:c49d
255.66.196.158 0:0:0:0:0:ffff:ff42:c49e
255.66.196.159 0:0:0:0:0:ffff:ff42:c49f
255.66.196.160 0:0:0:0:0:ffff:ff42:c4a0
255.66.196.161 0:0:0:0:0:ffff:ff42:c4a1
255.66.196.162 0:0:0:0:0:ffff:ff42:c4a2
255.66.196.163 0:0:0:0:0:ffff:ff42:c4a3
255.66.196.164 0:0:0:0:0:ffff:ff42:c4a4
255.66.196.165 0:0:0:0:0:ffff:ff42:c4a5
255.66.196.166 0:0:0:0:0:ffff:ff42:c4a6
255.66.196.167 0:0:0:0:0:ffff:ff42:c4a7
255.66.196.168 0:0:0:0:0:ffff:ff42:c4a8
255.66.196.169 0:0:0:0:0:ffff:ff42:c4a9
255.66.196.170 0:0:0:0:0:ffff:ff42:c4aa
255.66.196.171 0:0:0:0:0:ffff:ff42:c4ab
255.66.196.172 0:0:0:0:0:ffff:ff42:c4ac
255.66.196.173 0:0:0:0:0:ffff:ff42:c4ad
255.66.196.174 0:0:0:0:0:ffff:ff42:c4ae
255.66.196.175 0:0:0:0:0:ffff:ff42:c4af
255.66.196.176 0:0:0:0:0:ffff:ff42:c4b0
255.66.196.177 0:0:0:0:0:ffff:ff42:c4b1
255.66.196.178 0:0:0:0:0:ffff:ff42:c4b2
255.66.196.179 0:0:0:0:0:ffff:ff42:c4b3
255.66.196.180 0:0:0:0:0:ffff:ff42:c4b4


255.66.196.181 0:0:0:0:0:ffff:ff42:c4b5
255.66.196.182 0:0:0:0:0:ffff:ff42:c4b6
255.66.196.183 0:0:0:0:0:ffff:ff42:c4b7
255.66.196.184 0:0:0:0:0:ffff:ff42:c4b8
255.66.196.185 0:0:0:0:0:ffff:ff42:c4b9
255.66.196.186 0:0:0:0:0:ffff:ff42:c4ba
255.66.196.187 0:0:0:0:0:ffff:ff42:c4bb
255.66.196.188 0:0:0:0:0:ffff:ff42:c4bc
255.66.196.189 0:0:0:0:0:ffff:ff42:c4bd
255.66.196.190 0:0:0:0:0:ffff:ff42:c4be
255.66.196.191 0:0:0:0:0:ffff:ff42:c4bf
255.66.196.192 0:0:0:0:0:ffff:ff42:c4c0
255.66.196.193 0:0:0:0:0:ffff:ff42:c4c1
255.66.196.194 0:0:0:0:0:ffff:ff42:c4c2
255.66.196.195 0:0:0:0:0:ffff:ff42:c4c3
255.66.196.196 0:0:0:0:0:ffff:ff42:c4c4
255.66.196.197 0:0:0:0:0:ffff:ff42:c4c5
255.66.196.198 0:0:0:0:0:ffff:ff42:c4c6
255.66.196.199 0:0:0:0:0:ffff:ff42:c4c7
255.66.196.200 0:0:0:0:0:ffff:ff42:c4c8
255.66.196.201 0:0:0:0:0:ffff:ff42:c4c9
255.66.196.202 0:0:0:0:0:ffff:ff42:c4ca
255.66.196.203 0:0:0:0:0:ffff:ff42:c4cb
255.66.196.204 0:0:0:0:0:ffff:ff42:c4cc
255.66.196.205 0:0:0:0:0:ffff:ff42:c4cd
255.66.196.206 0:0:0:0:0:ffff:ff42:c4ce
255.66.196.207 0:0:0:0:0:ffff:ff42:c4cf
255.66.196.208 0:0:0:0:0:ffff:ff42:c4d0
255.66.196.209 0:0:0:0:0:ffff:ff42:c4d1
255.66.196.210 0:0:0:0:0:ffff:ff42:c4d2
255.66.196.211 0:0:0:0:0:ffff:ff42:c4d3
255.66.196.212 0:0:0:0:0:ffff:ff42:c4d4
255.66.196.213 0:0:0:0:0:ffff:ff42:c4d5
255.66.196.214 0:0:0:0:0:ffff:ff42:c4d6
255.66.196.215 0:0:0:0:0:ffff:ff42:c4d7
255.66.196.216 0:0:0:0:0:ffff:ff42:c4d8
255.66.196.217 0:0:0:0:0:ffff:ff42:c4d9
255.66.196.218 0:0:0:0:0:ffff:ff42:c4da
255.66.196.219 0:0:0:0:0:ffff:ff42:c4db
255.66.196.220 0:0:0:0:0:ffff:ff42:c4dc
255.66.196.221 0:0:0:0:0:ffff:ff42:c4dd
255.66.196.222 0:0:0:0:0:ffff:ff42:c4de
255.66.196.223 0:0:0:0:0:ffff:ff42:c4df
255.66.196.224 0:0:0:0:0:ffff:ff42:c4e0
255.66.196.225 0:0:0:0:0:ffff:ff42:c4e1
255.66.196.226 0:0:0:0:0:ffff:ff42:c4e2
255.66.196.227 0:0:0:0:0:ffff:ff42:c4e3
255.66.196.228 0:0:0:0:0:ffff:ff42:c4e4
255.66.196.229 0:0:0:0:0:ffff:ff42:c4e5
255.66.196.230 0:0:0:0:0:ffff:ff42:c4e6
255.66.196.231 0:0:0:0:0:ffff:ff42:c4e7
255.66.196.232 0:0:0:0:0:ffff:ff42:c4e8
255.66.196.233 0:0:0:0:0:ffff:ff42:c4e9
255.66.196.234 0:0:0:0:0:ffff:ff42:c4ea
255.66.196.235 0:0:0:0:0:ffff:ff42:c4eb
255.66.196.236 0:0:0:0:0:ffff:ff42:c4ec
255.66.196.237 0:0:0:0:0:ffff:ff42:c4ed
255.66.196.238 0:0:0:0:0:ffff:ff42:c4ee
255.66.196.239 0:0:0:0:0:ffff:ff42:c4ef
255.66.196.240 0:0:0:0:0:ffff:ff42:c4f0
255.66.196.241 0:0:0:0:0:ffff:ff42:c4f1
255.66.196.242 0:0:0:0:0:ffff:ff42:c4f2
255.66.196.243 0:0:0:0:0:ffff:ff42:c4f3
255.66.196.244 0:0:0:0:0:ffff:ff42:c4f4
255.66.196.245 0:0:0:0:0:ffff:ff42:c4f5
255.66.196.246 0:0:0:0:0:ffff:ff42:c4f6
255.66.196.247 0:0:0:0:0:ffff:ff42:c4f7
255.66.196.248 0:0:0:0:0:ffff:ff42:c4f8
255.66.196.249 0:0:0:0:0:ffff:ff42:c4f9
255.66.196.250 0:0:0:0:0:ffff:ff42:c4fa
255.66.196.251 0:0:0:0:0:ffff:ff42:c4fb
255.66.196.252 0:0:0:0:0:ffff:ff42:c4fc
255.66.196.253 0:0:0:0:0:ffff:ff42:c4fd
255.66.196.254 0:0:0:0:0:ffff:ff42:c4fe
255.66.196.255 0:0:0:0:0:ffff:ff42:c4ff


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.