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
127.145.3.1 0:0:0:0:0:ffff:7f91:301
127.145.3.2 0:0:0:0:0:ffff:7f91:302
127.145.3.3 0:0:0:0:0:ffff:7f91:303
127.145.3.4 0:0:0:0:0:ffff:7f91:304
127.145.3.5 0:0:0:0:0:ffff:7f91:305
127.145.3.6 0:0:0:0:0:ffff:7f91:306
127.145.3.7 0:0:0:0:0:ffff:7f91:307
127.145.3.8 0:0:0:0:0:ffff:7f91:308
127.145.3.9 0:0:0:0:0:ffff:7f91:309
127.145.3.10 0:0:0:0:0:ffff:7f91:30a
127.145.3.11 0:0:0:0:0:ffff:7f91:30b
127.145.3.12 0:0:0:0:0:ffff:7f91:30c
127.145.3.13 0:0:0:0:0:ffff:7f91:30d
127.145.3.14 0:0:0:0:0:ffff:7f91:30e
127.145.3.15 0:0:0:0:0:ffff:7f91:30f
127.145.3.16 0:0:0:0:0:ffff:7f91:310
127.145.3.17 0:0:0:0:0:ffff:7f91:311
127.145.3.18 0:0:0:0:0:ffff:7f91:312
127.145.3.19 0:0:0:0:0:ffff:7f91:313
127.145.3.20 0:0:0:0:0:ffff:7f91:314
127.145.3.21 0:0:0:0:0:ffff:7f91:315
127.145.3.22 0:0:0:0:0:ffff:7f91:316
127.145.3.23 0:0:0:0:0:ffff:7f91:317
127.145.3.24 0:0:0:0:0:ffff:7f91:318
127.145.3.25 0:0:0:0:0:ffff:7f91:319
127.145.3.26 0:0:0:0:0:ffff:7f91:31a
127.145.3.27 0:0:0:0:0:ffff:7f91:31b
127.145.3.28 0:0:0:0:0:ffff:7f91:31c
127.145.3.29 0:0:0:0:0:ffff:7f91:31d
127.145.3.30 0:0:0:0:0:ffff:7f91:31e
127.145.3.31 0:0:0:0:0:ffff:7f91:31f
127.145.3.32 0:0:0:0:0:ffff:7f91:320
127.145.3.33 0:0:0:0:0:ffff:7f91:321
127.145.3.34 0:0:0:0:0:ffff:7f91:322
127.145.3.35 0:0:0:0:0:ffff:7f91:323
127.145.3.36 0:0:0:0:0:ffff:7f91:324
127.145.3.37 0:0:0:0:0:ffff:7f91:325
127.145.3.38 0:0:0:0:0:ffff:7f91:326
127.145.3.39 0:0:0:0:0:ffff:7f91:327
127.145.3.40 0:0:0:0:0:ffff:7f91:328
127.145.3.41 0:0:0:0:0:ffff:7f91:329
127.145.3.42 0:0:0:0:0:ffff:7f91:32a
127.145.3.43 0:0:0:0:0:ffff:7f91:32b
127.145.3.44 0:0:0:0:0:ffff:7f91:32c
127.145.3.45 0:0:0:0:0:ffff:7f91:32d
127.145.3.46 0:0:0:0:0:ffff:7f91:32e
127.145.3.47 0:0:0:0:0:ffff:7f91:32f
127.145.3.48 0:0:0:0:0:ffff:7f91:330
127.145.3.49 0:0:0:0:0:ffff:7f91:331
127.145.3.50 0:0:0:0:0:ffff:7f91:332
127.145.3.51 0:0:0:0:0:ffff:7f91:333
127.145.3.52 0:0:0:0:0:ffff:7f91:334
127.145.3.53 0:0:0:0:0:ffff:7f91:335
127.145.3.54 0:0:0:0:0:ffff:7f91:336
127.145.3.55 0:0:0:0:0:ffff:7f91:337
127.145.3.56 0:0:0:0:0:ffff:7f91:338
127.145.3.57 0:0:0:0:0:ffff:7f91:339
127.145.3.58 0:0:0:0:0:ffff:7f91:33a
127.145.3.59 0:0:0:0:0:ffff:7f91:33b
127.145.3.60 0:0:0:0:0:ffff:7f91:33c


127.145.3.61 0:0:0:0:0:ffff:7f91:33d
127.145.3.62 0:0:0:0:0:ffff:7f91:33e
127.145.3.63 0:0:0:0:0:ffff:7f91:33f
127.145.3.64 0:0:0:0:0:ffff:7f91:340
127.145.3.65 0:0:0:0:0:ffff:7f91:341
127.145.3.66 0:0:0:0:0:ffff:7f91:342
127.145.3.67 0:0:0:0:0:ffff:7f91:343
127.145.3.68 0:0:0:0:0:ffff:7f91:344
127.145.3.69 0:0:0:0:0:ffff:7f91:345
127.145.3.70 0:0:0:0:0:ffff:7f91:346
127.145.3.71 0:0:0:0:0:ffff:7f91:347
127.145.3.72 0:0:0:0:0:ffff:7f91:348
127.145.3.73 0:0:0:0:0:ffff:7f91:349
127.145.3.74 0:0:0:0:0:ffff:7f91:34a
127.145.3.75 0:0:0:0:0:ffff:7f91:34b
127.145.3.76 0:0:0:0:0:ffff:7f91:34c
127.145.3.77 0:0:0:0:0:ffff:7f91:34d
127.145.3.78 0:0:0:0:0:ffff:7f91:34e
127.145.3.79 0:0:0:0:0:ffff:7f91:34f
127.145.3.80 0:0:0:0:0:ffff:7f91:350
127.145.3.81 0:0:0:0:0:ffff:7f91:351
127.145.3.82 0:0:0:0:0:ffff:7f91:352
127.145.3.83 0:0:0:0:0:ffff:7f91:353
127.145.3.84 0:0:0:0:0:ffff:7f91:354
127.145.3.85 0:0:0:0:0:ffff:7f91:355
127.145.3.86 0:0:0:0:0:ffff:7f91:356
127.145.3.87 0:0:0:0:0:ffff:7f91:357
127.145.3.88 0:0:0:0:0:ffff:7f91:358
127.145.3.89 0:0:0:0:0:ffff:7f91:359
127.145.3.90 0:0:0:0:0:ffff:7f91:35a
127.145.3.91 0:0:0:0:0:ffff:7f91:35b
127.145.3.92 0:0:0:0:0:ffff:7f91:35c
127.145.3.93 0:0:0:0:0:ffff:7f91:35d
127.145.3.94 0:0:0:0:0:ffff:7f91:35e
127.145.3.95 0:0:0:0:0:ffff:7f91:35f
127.145.3.96 0:0:0:0:0:ffff:7f91:360
127.145.3.97 0:0:0:0:0:ffff:7f91:361
127.145.3.98 0:0:0:0:0:ffff:7f91:362
127.145.3.99 0:0:0:0:0:ffff:7f91:363
127.145.3.100 0:0:0:0:0:ffff:7f91:364
127.145.3.101 0:0:0:0:0:ffff:7f91:365
127.145.3.102 0:0:0:0:0:ffff:7f91:366
127.145.3.103 0:0:0:0:0:ffff:7f91:367
127.145.3.104 0:0:0:0:0:ffff:7f91:368
127.145.3.105 0:0:0:0:0:ffff:7f91:369
127.145.3.106 0:0:0:0:0:ffff:7f91:36a
127.145.3.107 0:0:0:0:0:ffff:7f91:36b
127.145.3.108 0:0:0:0:0:ffff:7f91:36c
127.145.3.109 0:0:0:0:0:ffff:7f91:36d
127.145.3.110 0:0:0:0:0:ffff:7f91:36e
127.145.3.111 0:0:0:0:0:ffff:7f91:36f
127.145.3.112 0:0:0:0:0:ffff:7f91:370
127.145.3.113 0:0:0:0:0:ffff:7f91:371
127.145.3.114 0:0:0:0:0:ffff:7f91:372
127.145.3.115 0:0:0:0:0:ffff:7f91:373
127.145.3.116 0:0:0:0:0:ffff:7f91:374
127.145.3.117 0:0:0:0:0:ffff:7f91:375
127.145.3.118 0:0:0:0:0:ffff:7f91:376
127.145.3.119 0:0:0:0:0:ffff:7f91:377
127.145.3.120 0:0:0:0:0:ffff:7f91:378


127.145.3.121 0:0:0:0:0:ffff:7f91:379
127.145.3.122 0:0:0:0:0:ffff:7f91:37a
127.145.3.123 0:0:0:0:0:ffff:7f91:37b
127.145.3.124 0:0:0:0:0:ffff:7f91:37c
127.145.3.125 0:0:0:0:0:ffff:7f91:37d
127.145.3.126 0:0:0:0:0:ffff:7f91:37e
127.145.3.127 0:0:0:0:0:ffff:7f91:37f
127.145.3.128 0:0:0:0:0:ffff:7f91:380
127.145.3.129 0:0:0:0:0:ffff:7f91:381
127.145.3.130 0:0:0:0:0:ffff:7f91:382
127.145.3.131 0:0:0:0:0:ffff:7f91:383
127.145.3.132 0:0:0:0:0:ffff:7f91:384
127.145.3.133 0:0:0:0:0:ffff:7f91:385
127.145.3.134 0:0:0:0:0:ffff:7f91:386
127.145.3.135 0:0:0:0:0:ffff:7f91:387
127.145.3.136 0:0:0:0:0:ffff:7f91:388
127.145.3.137 0:0:0:0:0:ffff:7f91:389
127.145.3.138 0:0:0:0:0:ffff:7f91:38a
127.145.3.139 0:0:0:0:0:ffff:7f91:38b
127.145.3.140 0:0:0:0:0:ffff:7f91:38c
127.145.3.141 0:0:0:0:0:ffff:7f91:38d
127.145.3.142 0:0:0:0:0:ffff:7f91:38e
127.145.3.143 0:0:0:0:0:ffff:7f91:38f
127.145.3.144 0:0:0:0:0:ffff:7f91:390
127.145.3.145 0:0:0:0:0:ffff:7f91:391
127.145.3.146 0:0:0:0:0:ffff:7f91:392
127.145.3.147 0:0:0:0:0:ffff:7f91:393
127.145.3.148 0:0:0:0:0:ffff:7f91:394
127.145.3.149 0:0:0:0:0:ffff:7f91:395
127.145.3.150 0:0:0:0:0:ffff:7f91:396
127.145.3.151 0:0:0:0:0:ffff:7f91:397
127.145.3.152 0:0:0:0:0:ffff:7f91:398
127.145.3.153 0:0:0:0:0:ffff:7f91:399
127.145.3.154 0:0:0:0:0:ffff:7f91:39a
127.145.3.155 0:0:0:0:0:ffff:7f91:39b
127.145.3.156 0:0:0:0:0:ffff:7f91:39c
127.145.3.157 0:0:0:0:0:ffff:7f91:39d
127.145.3.158 0:0:0:0:0:ffff:7f91:39e
127.145.3.159 0:0:0:0:0:ffff:7f91:39f
127.145.3.160 0:0:0:0:0:ffff:7f91:3a0
127.145.3.161 0:0:0:0:0:ffff:7f91:3a1
127.145.3.162 0:0:0:0:0:ffff:7f91:3a2
127.145.3.163 0:0:0:0:0:ffff:7f91:3a3
127.145.3.164 0:0:0:0:0:ffff:7f91:3a4
127.145.3.165 0:0:0:0:0:ffff:7f91:3a5
127.145.3.166 0:0:0:0:0:ffff:7f91:3a6
127.145.3.167 0:0:0:0:0:ffff:7f91:3a7
127.145.3.168 0:0:0:0:0:ffff:7f91:3a8
127.145.3.169 0:0:0:0:0:ffff:7f91:3a9
127.145.3.170 0:0:0:0:0:ffff:7f91:3aa
127.145.3.171 0:0:0:0:0:ffff:7f91:3ab
127.145.3.172 0:0:0:0:0:ffff:7f91:3ac
127.145.3.173 0:0:0:0:0:ffff:7f91:3ad
127.145.3.174 0:0:0:0:0:ffff:7f91:3ae
127.145.3.175 0:0:0:0:0:ffff:7f91:3af
127.145.3.176 0:0:0:0:0:ffff:7f91:3b0
127.145.3.177 0:0:0:0:0:ffff:7f91:3b1
127.145.3.178 0:0:0:0:0:ffff:7f91:3b2
127.145.3.179 0:0:0:0:0:ffff:7f91:3b3
127.145.3.180 0:0:0:0:0:ffff:7f91:3b4


127.145.3.181 0:0:0:0:0:ffff:7f91:3b5
127.145.3.182 0:0:0:0:0:ffff:7f91:3b6
127.145.3.183 0:0:0:0:0:ffff:7f91:3b7
127.145.3.184 0:0:0:0:0:ffff:7f91:3b8
127.145.3.185 0:0:0:0:0:ffff:7f91:3b9
127.145.3.186 0:0:0:0:0:ffff:7f91:3ba
127.145.3.187 0:0:0:0:0:ffff:7f91:3bb
127.145.3.188 0:0:0:0:0:ffff:7f91:3bc
127.145.3.189 0:0:0:0:0:ffff:7f91:3bd
127.145.3.190 0:0:0:0:0:ffff:7f91:3be
127.145.3.191 0:0:0:0:0:ffff:7f91:3bf
127.145.3.192 0:0:0:0:0:ffff:7f91:3c0
127.145.3.193 0:0:0:0:0:ffff:7f91:3c1
127.145.3.194 0:0:0:0:0:ffff:7f91:3c2
127.145.3.195 0:0:0:0:0:ffff:7f91:3c3
127.145.3.196 0:0:0:0:0:ffff:7f91:3c4
127.145.3.197 0:0:0:0:0:ffff:7f91:3c5
127.145.3.198 0:0:0:0:0:ffff:7f91:3c6
127.145.3.199 0:0:0:0:0:ffff:7f91:3c7
127.145.3.200 0:0:0:0:0:ffff:7f91:3c8
127.145.3.201 0:0:0:0:0:ffff:7f91:3c9
127.145.3.202 0:0:0:0:0:ffff:7f91:3ca
127.145.3.203 0:0:0:0:0:ffff:7f91:3cb
127.145.3.204 0:0:0:0:0:ffff:7f91:3cc
127.145.3.205 0:0:0:0:0:ffff:7f91:3cd
127.145.3.206 0:0:0:0:0:ffff:7f91:3ce
127.145.3.207 0:0:0:0:0:ffff:7f91:3cf
127.145.3.208 0:0:0:0:0:ffff:7f91:3d0
127.145.3.209 0:0:0:0:0:ffff:7f91:3d1
127.145.3.210 0:0:0:0:0:ffff:7f91:3d2
127.145.3.211 0:0:0:0:0:ffff:7f91:3d3
127.145.3.212 0:0:0:0:0:ffff:7f91:3d4
127.145.3.213 0:0:0:0:0:ffff:7f91:3d5
127.145.3.214 0:0:0:0:0:ffff:7f91:3d6
127.145.3.215 0:0:0:0:0:ffff:7f91:3d7
127.145.3.216 0:0:0:0:0:ffff:7f91:3d8
127.145.3.217 0:0:0:0:0:ffff:7f91:3d9
127.145.3.218 0:0:0:0:0:ffff:7f91:3da
127.145.3.219 0:0:0:0:0:ffff:7f91:3db
127.145.3.220 0:0:0:0:0:ffff:7f91:3dc
127.145.3.221 0:0:0:0:0:ffff:7f91:3dd
127.145.3.222 0:0:0:0:0:ffff:7f91:3de
127.145.3.223 0:0:0:0:0:ffff:7f91:3df
127.145.3.224 0:0:0:0:0:ffff:7f91:3e0
127.145.3.225 0:0:0:0:0:ffff:7f91:3e1
127.145.3.226 0:0:0:0:0:ffff:7f91:3e2
127.145.3.227 0:0:0:0:0:ffff:7f91:3e3
127.145.3.228 0:0:0:0:0:ffff:7f91:3e4
127.145.3.229 0:0:0:0:0:ffff:7f91:3e5
127.145.3.230 0:0:0:0:0:ffff:7f91:3e6
127.145.3.231 0:0:0:0:0:ffff:7f91:3e7
127.145.3.232 0:0:0:0:0:ffff:7f91:3e8
127.145.3.233 0:0:0:0:0:ffff:7f91:3e9
127.145.3.234 0:0:0:0:0:ffff:7f91:3ea
127.145.3.235 0:0:0:0:0:ffff:7f91:3eb
127.145.3.236 0:0:0:0:0:ffff:7f91:3ec
127.145.3.237 0:0:0:0:0:ffff:7f91:3ed
127.145.3.238 0:0:0:0:0:ffff:7f91:3ee
127.145.3.239 0:0:0:0:0:ffff:7f91:3ef
127.145.3.240 0:0:0:0:0:ffff:7f91:3f0
127.145.3.241 0:0:0:0:0:ffff:7f91:3f1
127.145.3.242 0:0:0:0:0:ffff:7f91:3f2
127.145.3.243 0:0:0:0:0:ffff:7f91:3f3
127.145.3.244 0:0:0:0:0:ffff:7f91:3f4
127.145.3.245 0:0:0:0:0:ffff:7f91:3f5
127.145.3.246 0:0:0:0:0:ffff:7f91:3f6
127.145.3.247 0:0:0:0:0:ffff:7f91:3f7
127.145.3.248 0:0:0:0:0:ffff:7f91:3f8
127.145.3.249 0:0:0:0:0:ffff:7f91:3f9
127.145.3.250 0:0:0:0:0:ffff:7f91:3fa
127.145.3.251 0:0:0:0:0:ffff:7f91:3fb
127.145.3.252 0:0:0:0:0:ffff:7f91:3fc
127.145.3.253 0:0:0:0:0:ffff:7f91:3fd
127.145.3.254 0:0:0:0:0:ffff:7f91:3fe
127.145.3.255 0:0:0:0:0:ffff:7f91:3ff


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.