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
91.71.243.1 0:0:0:0:0:ffff:5b47:f301
91.71.243.2 0:0:0:0:0:ffff:5b47:f302
91.71.243.3 0:0:0:0:0:ffff:5b47:f303
91.71.243.4 0:0:0:0:0:ffff:5b47:f304
91.71.243.5 0:0:0:0:0:ffff:5b47:f305
91.71.243.6 0:0:0:0:0:ffff:5b47:f306
91.71.243.7 0:0:0:0:0:ffff:5b47:f307
91.71.243.8 0:0:0:0:0:ffff:5b47:f308
91.71.243.9 0:0:0:0:0:ffff:5b47:f309
91.71.243.10 0:0:0:0:0:ffff:5b47:f30a
91.71.243.11 0:0:0:0:0:ffff:5b47:f30b
91.71.243.12 0:0:0:0:0:ffff:5b47:f30c
91.71.243.13 0:0:0:0:0:ffff:5b47:f30d
91.71.243.14 0:0:0:0:0:ffff:5b47:f30e
91.71.243.15 0:0:0:0:0:ffff:5b47:f30f
91.71.243.16 0:0:0:0:0:ffff:5b47:f310
91.71.243.17 0:0:0:0:0:ffff:5b47:f311
91.71.243.18 0:0:0:0:0:ffff:5b47:f312
91.71.243.19 0:0:0:0:0:ffff:5b47:f313
91.71.243.20 0:0:0:0:0:ffff:5b47:f314
91.71.243.21 0:0:0:0:0:ffff:5b47:f315
91.71.243.22 0:0:0:0:0:ffff:5b47:f316
91.71.243.23 0:0:0:0:0:ffff:5b47:f317
91.71.243.24 0:0:0:0:0:ffff:5b47:f318
91.71.243.25 0:0:0:0:0:ffff:5b47:f319
91.71.243.26 0:0:0:0:0:ffff:5b47:f31a
91.71.243.27 0:0:0:0:0:ffff:5b47:f31b
91.71.243.28 0:0:0:0:0:ffff:5b47:f31c
91.71.243.29 0:0:0:0:0:ffff:5b47:f31d
91.71.243.30 0:0:0:0:0:ffff:5b47:f31e
91.71.243.31 0:0:0:0:0:ffff:5b47:f31f
91.71.243.32 0:0:0:0:0:ffff:5b47:f320
91.71.243.33 0:0:0:0:0:ffff:5b47:f321
91.71.243.34 0:0:0:0:0:ffff:5b47:f322
91.71.243.35 0:0:0:0:0:ffff:5b47:f323
91.71.243.36 0:0:0:0:0:ffff:5b47:f324
91.71.243.37 0:0:0:0:0:ffff:5b47:f325
91.71.243.38 0:0:0:0:0:ffff:5b47:f326
91.71.243.39 0:0:0:0:0:ffff:5b47:f327
91.71.243.40 0:0:0:0:0:ffff:5b47:f328
91.71.243.41 0:0:0:0:0:ffff:5b47:f329
91.71.243.42 0:0:0:0:0:ffff:5b47:f32a
91.71.243.43 0:0:0:0:0:ffff:5b47:f32b
91.71.243.44 0:0:0:0:0:ffff:5b47:f32c
91.71.243.45 0:0:0:0:0:ffff:5b47:f32d
91.71.243.46 0:0:0:0:0:ffff:5b47:f32e
91.71.243.47 0:0:0:0:0:ffff:5b47:f32f
91.71.243.48 0:0:0:0:0:ffff:5b47:f330
91.71.243.49 0:0:0:0:0:ffff:5b47:f331
91.71.243.50 0:0:0:0:0:ffff:5b47:f332
91.71.243.51 0:0:0:0:0:ffff:5b47:f333
91.71.243.52 0:0:0:0:0:ffff:5b47:f334
91.71.243.53 0:0:0:0:0:ffff:5b47:f335
91.71.243.54 0:0:0:0:0:ffff:5b47:f336
91.71.243.55 0:0:0:0:0:ffff:5b47:f337
91.71.243.56 0:0:0:0:0:ffff:5b47:f338
91.71.243.57 0:0:0:0:0:ffff:5b47:f339
91.71.243.58 0:0:0:0:0:ffff:5b47:f33a
91.71.243.59 0:0:0:0:0:ffff:5b47:f33b
91.71.243.60 0:0:0:0:0:ffff:5b47:f33c


91.71.243.61 0:0:0:0:0:ffff:5b47:f33d
91.71.243.62 0:0:0:0:0:ffff:5b47:f33e
91.71.243.63 0:0:0:0:0:ffff:5b47:f33f
91.71.243.64 0:0:0:0:0:ffff:5b47:f340
91.71.243.65 0:0:0:0:0:ffff:5b47:f341
91.71.243.66 0:0:0:0:0:ffff:5b47:f342
91.71.243.67 0:0:0:0:0:ffff:5b47:f343
91.71.243.68 0:0:0:0:0:ffff:5b47:f344
91.71.243.69 0:0:0:0:0:ffff:5b47:f345
91.71.243.70 0:0:0:0:0:ffff:5b47:f346
91.71.243.71 0:0:0:0:0:ffff:5b47:f347
91.71.243.72 0:0:0:0:0:ffff:5b47:f348
91.71.243.73 0:0:0:0:0:ffff:5b47:f349
91.71.243.74 0:0:0:0:0:ffff:5b47:f34a
91.71.243.75 0:0:0:0:0:ffff:5b47:f34b
91.71.243.76 0:0:0:0:0:ffff:5b47:f34c
91.71.243.77 0:0:0:0:0:ffff:5b47:f34d
91.71.243.78 0:0:0:0:0:ffff:5b47:f34e
91.71.243.79 0:0:0:0:0:ffff:5b47:f34f
91.71.243.80 0:0:0:0:0:ffff:5b47:f350
91.71.243.81 0:0:0:0:0:ffff:5b47:f351
91.71.243.82 0:0:0:0:0:ffff:5b47:f352
91.71.243.83 0:0:0:0:0:ffff:5b47:f353
91.71.243.84 0:0:0:0:0:ffff:5b47:f354
91.71.243.85 0:0:0:0:0:ffff:5b47:f355
91.71.243.86 0:0:0:0:0:ffff:5b47:f356
91.71.243.87 0:0:0:0:0:ffff:5b47:f357
91.71.243.88 0:0:0:0:0:ffff:5b47:f358
91.71.243.89 0:0:0:0:0:ffff:5b47:f359
91.71.243.90 0:0:0:0:0:ffff:5b47:f35a
91.71.243.91 0:0:0:0:0:ffff:5b47:f35b
91.71.243.92 0:0:0:0:0:ffff:5b47:f35c
91.71.243.93 0:0:0:0:0:ffff:5b47:f35d
91.71.243.94 0:0:0:0:0:ffff:5b47:f35e
91.71.243.95 0:0:0:0:0:ffff:5b47:f35f
91.71.243.96 0:0:0:0:0:ffff:5b47:f360
91.71.243.97 0:0:0:0:0:ffff:5b47:f361
91.71.243.98 0:0:0:0:0:ffff:5b47:f362
91.71.243.99 0:0:0:0:0:ffff:5b47:f363
91.71.243.100 0:0:0:0:0:ffff:5b47:f364
91.71.243.101 0:0:0:0:0:ffff:5b47:f365
91.71.243.102 0:0:0:0:0:ffff:5b47:f366
91.71.243.103 0:0:0:0:0:ffff:5b47:f367
91.71.243.104 0:0:0:0:0:ffff:5b47:f368
91.71.243.105 0:0:0:0:0:ffff:5b47:f369
91.71.243.106 0:0:0:0:0:ffff:5b47:f36a
91.71.243.107 0:0:0:0:0:ffff:5b47:f36b
91.71.243.108 0:0:0:0:0:ffff:5b47:f36c
91.71.243.109 0:0:0:0:0:ffff:5b47:f36d
91.71.243.110 0:0:0:0:0:ffff:5b47:f36e
91.71.243.111 0:0:0:0:0:ffff:5b47:f36f
91.71.243.112 0:0:0:0:0:ffff:5b47:f370
91.71.243.113 0:0:0:0:0:ffff:5b47:f371
91.71.243.114 0:0:0:0:0:ffff:5b47:f372
91.71.243.115 0:0:0:0:0:ffff:5b47:f373
91.71.243.116 0:0:0:0:0:ffff:5b47:f374
91.71.243.117 0:0:0:0:0:ffff:5b47:f375
91.71.243.118 0:0:0:0:0:ffff:5b47:f376
91.71.243.119 0:0:0:0:0:ffff:5b47:f377
91.71.243.120 0:0:0:0:0:ffff:5b47:f378


91.71.243.121 0:0:0:0:0:ffff:5b47:f379
91.71.243.122 0:0:0:0:0:ffff:5b47:f37a
91.71.243.123 0:0:0:0:0:ffff:5b47:f37b
91.71.243.124 0:0:0:0:0:ffff:5b47:f37c
91.71.243.125 0:0:0:0:0:ffff:5b47:f37d
91.71.243.126 0:0:0:0:0:ffff:5b47:f37e
91.71.243.127 0:0:0:0:0:ffff:5b47:f37f
91.71.243.128 0:0:0:0:0:ffff:5b47:f380
91.71.243.129 0:0:0:0:0:ffff:5b47:f381
91.71.243.130 0:0:0:0:0:ffff:5b47:f382
91.71.243.131 0:0:0:0:0:ffff:5b47:f383
91.71.243.132 0:0:0:0:0:ffff:5b47:f384
91.71.243.133 0:0:0:0:0:ffff:5b47:f385
91.71.243.134 0:0:0:0:0:ffff:5b47:f386
91.71.243.135 0:0:0:0:0:ffff:5b47:f387
91.71.243.136 0:0:0:0:0:ffff:5b47:f388
91.71.243.137 0:0:0:0:0:ffff:5b47:f389
91.71.243.138 0:0:0:0:0:ffff:5b47:f38a
91.71.243.139 0:0:0:0:0:ffff:5b47:f38b
91.71.243.140 0:0:0:0:0:ffff:5b47:f38c
91.71.243.141 0:0:0:0:0:ffff:5b47:f38d
91.71.243.142 0:0:0:0:0:ffff:5b47:f38e
91.71.243.143 0:0:0:0:0:ffff:5b47:f38f
91.71.243.144 0:0:0:0:0:ffff:5b47:f390
91.71.243.145 0:0:0:0:0:ffff:5b47:f391
91.71.243.146 0:0:0:0:0:ffff:5b47:f392
91.71.243.147 0:0:0:0:0:ffff:5b47:f393
91.71.243.148 0:0:0:0:0:ffff:5b47:f394
91.71.243.149 0:0:0:0:0:ffff:5b47:f395
91.71.243.150 0:0:0:0:0:ffff:5b47:f396
91.71.243.151 0:0:0:0:0:ffff:5b47:f397
91.71.243.152 0:0:0:0:0:ffff:5b47:f398
91.71.243.153 0:0:0:0:0:ffff:5b47:f399
91.71.243.154 0:0:0:0:0:ffff:5b47:f39a
91.71.243.155 0:0:0:0:0:ffff:5b47:f39b
91.71.243.156 0:0:0:0:0:ffff:5b47:f39c
91.71.243.157 0:0:0:0:0:ffff:5b47:f39d
91.71.243.158 0:0:0:0:0:ffff:5b47:f39e
91.71.243.159 0:0:0:0:0:ffff:5b47:f39f
91.71.243.160 0:0:0:0:0:ffff:5b47:f3a0
91.71.243.161 0:0:0:0:0:ffff:5b47:f3a1
91.71.243.162 0:0:0:0:0:ffff:5b47:f3a2
91.71.243.163 0:0:0:0:0:ffff:5b47:f3a3
91.71.243.164 0:0:0:0:0:ffff:5b47:f3a4
91.71.243.165 0:0:0:0:0:ffff:5b47:f3a5
91.71.243.166 0:0:0:0:0:ffff:5b47:f3a6
91.71.243.167 0:0:0:0:0:ffff:5b47:f3a7
91.71.243.168 0:0:0:0:0:ffff:5b47:f3a8
91.71.243.169 0:0:0:0:0:ffff:5b47:f3a9
91.71.243.170 0:0:0:0:0:ffff:5b47:f3aa
91.71.243.171 0:0:0:0:0:ffff:5b47:f3ab
91.71.243.172 0:0:0:0:0:ffff:5b47:f3ac
91.71.243.173 0:0:0:0:0:ffff:5b47:f3ad
91.71.243.174 0:0:0:0:0:ffff:5b47:f3ae
91.71.243.175 0:0:0:0:0:ffff:5b47:f3af
91.71.243.176 0:0:0:0:0:ffff:5b47:f3b0
91.71.243.177 0:0:0:0:0:ffff:5b47:f3b1
91.71.243.178 0:0:0:0:0:ffff:5b47:f3b2
91.71.243.179 0:0:0:0:0:ffff:5b47:f3b3
91.71.243.180 0:0:0:0:0:ffff:5b47:f3b4


91.71.243.181 0:0:0:0:0:ffff:5b47:f3b5
91.71.243.182 0:0:0:0:0:ffff:5b47:f3b6
91.71.243.183 0:0:0:0:0:ffff:5b47:f3b7
91.71.243.184 0:0:0:0:0:ffff:5b47:f3b8
91.71.243.185 0:0:0:0:0:ffff:5b47:f3b9
91.71.243.186 0:0:0:0:0:ffff:5b47:f3ba
91.71.243.187 0:0:0:0:0:ffff:5b47:f3bb
91.71.243.188 0:0:0:0:0:ffff:5b47:f3bc
91.71.243.189 0:0:0:0:0:ffff:5b47:f3bd
91.71.243.190 0:0:0:0:0:ffff:5b47:f3be
91.71.243.191 0:0:0:0:0:ffff:5b47:f3bf
91.71.243.192 0:0:0:0:0:ffff:5b47:f3c0
91.71.243.193 0:0:0:0:0:ffff:5b47:f3c1
91.71.243.194 0:0:0:0:0:ffff:5b47:f3c2
91.71.243.195 0:0:0:0:0:ffff:5b47:f3c3
91.71.243.196 0:0:0:0:0:ffff:5b47:f3c4
91.71.243.197 0:0:0:0:0:ffff:5b47:f3c5
91.71.243.198 0:0:0:0:0:ffff:5b47:f3c6
91.71.243.199 0:0:0:0:0:ffff:5b47:f3c7
91.71.243.200 0:0:0:0:0:ffff:5b47:f3c8
91.71.243.201 0:0:0:0:0:ffff:5b47:f3c9
91.71.243.202 0:0:0:0:0:ffff:5b47:f3ca
91.71.243.203 0:0:0:0:0:ffff:5b47:f3cb
91.71.243.204 0:0:0:0:0:ffff:5b47:f3cc
91.71.243.205 0:0:0:0:0:ffff:5b47:f3cd
91.71.243.206 0:0:0:0:0:ffff:5b47:f3ce
91.71.243.207 0:0:0:0:0:ffff:5b47:f3cf
91.71.243.208 0:0:0:0:0:ffff:5b47:f3d0
91.71.243.209 0:0:0:0:0:ffff:5b47:f3d1
91.71.243.210 0:0:0:0:0:ffff:5b47:f3d2
91.71.243.211 0:0:0:0:0:ffff:5b47:f3d3
91.71.243.212 0:0:0:0:0:ffff:5b47:f3d4
91.71.243.213 0:0:0:0:0:ffff:5b47:f3d5
91.71.243.214 0:0:0:0:0:ffff:5b47:f3d6
91.71.243.215 0:0:0:0:0:ffff:5b47:f3d7
91.71.243.216 0:0:0:0:0:ffff:5b47:f3d8
91.71.243.217 0:0:0:0:0:ffff:5b47:f3d9
91.71.243.218 0:0:0:0:0:ffff:5b47:f3da
91.71.243.219 0:0:0:0:0:ffff:5b47:f3db
91.71.243.220 0:0:0:0:0:ffff:5b47:f3dc
91.71.243.221 0:0:0:0:0:ffff:5b47:f3dd
91.71.243.222 0:0:0:0:0:ffff:5b47:f3de
91.71.243.223 0:0:0:0:0:ffff:5b47:f3df
91.71.243.224 0:0:0:0:0:ffff:5b47:f3e0
91.71.243.225 0:0:0:0:0:ffff:5b47:f3e1
91.71.243.226 0:0:0:0:0:ffff:5b47:f3e2
91.71.243.227 0:0:0:0:0:ffff:5b47:f3e3
91.71.243.228 0:0:0:0:0:ffff:5b47:f3e4
91.71.243.229 0:0:0:0:0:ffff:5b47:f3e5
91.71.243.230 0:0:0:0:0:ffff:5b47:f3e6
91.71.243.231 0:0:0:0:0:ffff:5b47:f3e7
91.71.243.232 0:0:0:0:0:ffff:5b47:f3e8
91.71.243.233 0:0:0:0:0:ffff:5b47:f3e9
91.71.243.234 0:0:0:0:0:ffff:5b47:f3ea
91.71.243.235 0:0:0:0:0:ffff:5b47:f3eb
91.71.243.236 0:0:0:0:0:ffff:5b47:f3ec
91.71.243.237 0:0:0:0:0:ffff:5b47:f3ed
91.71.243.238 0:0:0:0:0:ffff:5b47:f3ee
91.71.243.239 0:0:0:0:0:ffff:5b47:f3ef
91.71.243.240 0:0:0:0:0:ffff:5b47:f3f0
91.71.243.241 0:0:0:0:0:ffff:5b47:f3f1
91.71.243.242 0:0:0:0:0:ffff:5b47:f3f2
91.71.243.243 0:0:0:0:0:ffff:5b47:f3f3
91.71.243.244 0:0:0:0:0:ffff:5b47:f3f4
91.71.243.245 0:0:0:0:0:ffff:5b47:f3f5
91.71.243.246 0:0:0:0:0:ffff:5b47:f3f6
91.71.243.247 0:0:0:0:0:ffff:5b47:f3f7
91.71.243.248 0:0:0:0:0:ffff:5b47:f3f8
91.71.243.249 0:0:0:0:0:ffff:5b47:f3f9
91.71.243.250 0:0:0:0:0:ffff:5b47:f3fa
91.71.243.251 0:0:0:0:0:ffff:5b47:f3fb
91.71.243.252 0:0:0:0:0:ffff:5b47:f3fc
91.71.243.253 0:0:0:0:0:ffff:5b47:f3fd
91.71.243.254 0:0:0:0:0:ffff:5b47:f3fe
91.71.243.255 0:0:0:0:0:ffff:5b47:f3ff


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.