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
91.56.18.1 0:0:0:0:0:ffff:5b38:1201
91.56.18.2 0:0:0:0:0:ffff:5b38:1202
91.56.18.3 0:0:0:0:0:ffff:5b38:1203
91.56.18.4 0:0:0:0:0:ffff:5b38:1204
91.56.18.5 0:0:0:0:0:ffff:5b38:1205
91.56.18.6 0:0:0:0:0:ffff:5b38:1206
91.56.18.7 0:0:0:0:0:ffff:5b38:1207
91.56.18.8 0:0:0:0:0:ffff:5b38:1208
91.56.18.9 0:0:0:0:0:ffff:5b38:1209
91.56.18.10 0:0:0:0:0:ffff:5b38:120a
91.56.18.11 0:0:0:0:0:ffff:5b38:120b
91.56.18.12 0:0:0:0:0:ffff:5b38:120c
91.56.18.13 0:0:0:0:0:ffff:5b38:120d
91.56.18.14 0:0:0:0:0:ffff:5b38:120e
91.56.18.15 0:0:0:0:0:ffff:5b38:120f
91.56.18.16 0:0:0:0:0:ffff:5b38:1210
91.56.18.17 0:0:0:0:0:ffff:5b38:1211
91.56.18.18 0:0:0:0:0:ffff:5b38:1212
91.56.18.19 0:0:0:0:0:ffff:5b38:1213
91.56.18.20 0:0:0:0:0:ffff:5b38:1214
91.56.18.21 0:0:0:0:0:ffff:5b38:1215
91.56.18.22 0:0:0:0:0:ffff:5b38:1216
91.56.18.23 0:0:0:0:0:ffff:5b38:1217
91.56.18.24 0:0:0:0:0:ffff:5b38:1218
91.56.18.25 0:0:0:0:0:ffff:5b38:1219
91.56.18.26 0:0:0:0:0:ffff:5b38:121a
91.56.18.27 0:0:0:0:0:ffff:5b38:121b
91.56.18.28 0:0:0:0:0:ffff:5b38:121c
91.56.18.29 0:0:0:0:0:ffff:5b38:121d
91.56.18.30 0:0:0:0:0:ffff:5b38:121e
91.56.18.31 0:0:0:0:0:ffff:5b38:121f
91.56.18.32 0:0:0:0:0:ffff:5b38:1220
91.56.18.33 0:0:0:0:0:ffff:5b38:1221
91.56.18.34 0:0:0:0:0:ffff:5b38:1222
91.56.18.35 0:0:0:0:0:ffff:5b38:1223
91.56.18.36 0:0:0:0:0:ffff:5b38:1224
91.56.18.37 0:0:0:0:0:ffff:5b38:1225
91.56.18.38 0:0:0:0:0:ffff:5b38:1226
91.56.18.39 0:0:0:0:0:ffff:5b38:1227
91.56.18.40 0:0:0:0:0:ffff:5b38:1228
91.56.18.41 0:0:0:0:0:ffff:5b38:1229
91.56.18.42 0:0:0:0:0:ffff:5b38:122a
91.56.18.43 0:0:0:0:0:ffff:5b38:122b
91.56.18.44 0:0:0:0:0:ffff:5b38:122c
91.56.18.45 0:0:0:0:0:ffff:5b38:122d
91.56.18.46 0:0:0:0:0:ffff:5b38:122e
91.56.18.47 0:0:0:0:0:ffff:5b38:122f
91.56.18.48 0:0:0:0:0:ffff:5b38:1230
91.56.18.49 0:0:0:0:0:ffff:5b38:1231
91.56.18.50 0:0:0:0:0:ffff:5b38:1232
91.56.18.51 0:0:0:0:0:ffff:5b38:1233
91.56.18.52 0:0:0:0:0:ffff:5b38:1234
91.56.18.53 0:0:0:0:0:ffff:5b38:1235
91.56.18.54 0:0:0:0:0:ffff:5b38:1236
91.56.18.55 0:0:0:0:0:ffff:5b38:1237
91.56.18.56 0:0:0:0:0:ffff:5b38:1238
91.56.18.57 0:0:0:0:0:ffff:5b38:1239
91.56.18.58 0:0:0:0:0:ffff:5b38:123a
91.56.18.59 0:0:0:0:0:ffff:5b38:123b
91.56.18.60 0:0:0:0:0:ffff:5b38:123c


91.56.18.61 0:0:0:0:0:ffff:5b38:123d
91.56.18.62 0:0:0:0:0:ffff:5b38:123e
91.56.18.63 0:0:0:0:0:ffff:5b38:123f
91.56.18.64 0:0:0:0:0:ffff:5b38:1240
91.56.18.65 0:0:0:0:0:ffff:5b38:1241
91.56.18.66 0:0:0:0:0:ffff:5b38:1242
91.56.18.67 0:0:0:0:0:ffff:5b38:1243
91.56.18.68 0:0:0:0:0:ffff:5b38:1244
91.56.18.69 0:0:0:0:0:ffff:5b38:1245
91.56.18.70 0:0:0:0:0:ffff:5b38:1246
91.56.18.71 0:0:0:0:0:ffff:5b38:1247
91.56.18.72 0:0:0:0:0:ffff:5b38:1248
91.56.18.73 0:0:0:0:0:ffff:5b38:1249
91.56.18.74 0:0:0:0:0:ffff:5b38:124a
91.56.18.75 0:0:0:0:0:ffff:5b38:124b
91.56.18.76 0:0:0:0:0:ffff:5b38:124c
91.56.18.77 0:0:0:0:0:ffff:5b38:124d
91.56.18.78 0:0:0:0:0:ffff:5b38:124e
91.56.18.79 0:0:0:0:0:ffff:5b38:124f
91.56.18.80 0:0:0:0:0:ffff:5b38:1250
91.56.18.81 0:0:0:0:0:ffff:5b38:1251
91.56.18.82 0:0:0:0:0:ffff:5b38:1252
91.56.18.83 0:0:0:0:0:ffff:5b38:1253
91.56.18.84 0:0:0:0:0:ffff:5b38:1254
91.56.18.85 0:0:0:0:0:ffff:5b38:1255
91.56.18.86 0:0:0:0:0:ffff:5b38:1256
91.56.18.87 0:0:0:0:0:ffff:5b38:1257
91.56.18.88 0:0:0:0:0:ffff:5b38:1258
91.56.18.89 0:0:0:0:0:ffff:5b38:1259
91.56.18.90 0:0:0:0:0:ffff:5b38:125a
91.56.18.91 0:0:0:0:0:ffff:5b38:125b
91.56.18.92 0:0:0:0:0:ffff:5b38:125c
91.56.18.93 0:0:0:0:0:ffff:5b38:125d
91.56.18.94 0:0:0:0:0:ffff:5b38:125e
91.56.18.95 0:0:0:0:0:ffff:5b38:125f
91.56.18.96 0:0:0:0:0:ffff:5b38:1260
91.56.18.97 0:0:0:0:0:ffff:5b38:1261
91.56.18.98 0:0:0:0:0:ffff:5b38:1262
91.56.18.99 0:0:0:0:0:ffff:5b38:1263
91.56.18.100 0:0:0:0:0:ffff:5b38:1264
91.56.18.101 0:0:0:0:0:ffff:5b38:1265
91.56.18.102 0:0:0:0:0:ffff:5b38:1266
91.56.18.103 0:0:0:0:0:ffff:5b38:1267
91.56.18.104 0:0:0:0:0:ffff:5b38:1268
91.56.18.105 0:0:0:0:0:ffff:5b38:1269
91.56.18.106 0:0:0:0:0:ffff:5b38:126a
91.56.18.107 0:0:0:0:0:ffff:5b38:126b
91.56.18.108 0:0:0:0:0:ffff:5b38:126c
91.56.18.109 0:0:0:0:0:ffff:5b38:126d
91.56.18.110 0:0:0:0:0:ffff:5b38:126e
91.56.18.111 0:0:0:0:0:ffff:5b38:126f
91.56.18.112 0:0:0:0:0:ffff:5b38:1270
91.56.18.113 0:0:0:0:0:ffff:5b38:1271
91.56.18.114 0:0:0:0:0:ffff:5b38:1272
91.56.18.115 0:0:0:0:0:ffff:5b38:1273
91.56.18.116 0:0:0:0:0:ffff:5b38:1274
91.56.18.117 0:0:0:0:0:ffff:5b38:1275
91.56.18.118 0:0:0:0:0:ffff:5b38:1276
91.56.18.119 0:0:0:0:0:ffff:5b38:1277
91.56.18.120 0:0:0:0:0:ffff:5b38:1278


91.56.18.121 0:0:0:0:0:ffff:5b38:1279
91.56.18.122 0:0:0:0:0:ffff:5b38:127a
91.56.18.123 0:0:0:0:0:ffff:5b38:127b
91.56.18.124 0:0:0:0:0:ffff:5b38:127c
91.56.18.125 0:0:0:0:0:ffff:5b38:127d
91.56.18.126 0:0:0:0:0:ffff:5b38:127e
91.56.18.127 0:0:0:0:0:ffff:5b38:127f
91.56.18.128 0:0:0:0:0:ffff:5b38:1280
91.56.18.129 0:0:0:0:0:ffff:5b38:1281
91.56.18.130 0:0:0:0:0:ffff:5b38:1282
91.56.18.131 0:0:0:0:0:ffff:5b38:1283
91.56.18.132 0:0:0:0:0:ffff:5b38:1284
91.56.18.133 0:0:0:0:0:ffff:5b38:1285
91.56.18.134 0:0:0:0:0:ffff:5b38:1286
91.56.18.135 0:0:0:0:0:ffff:5b38:1287
91.56.18.136 0:0:0:0:0:ffff:5b38:1288
91.56.18.137 0:0:0:0:0:ffff:5b38:1289
91.56.18.138 0:0:0:0:0:ffff:5b38:128a
91.56.18.139 0:0:0:0:0:ffff:5b38:128b
91.56.18.140 0:0:0:0:0:ffff:5b38:128c
91.56.18.141 0:0:0:0:0:ffff:5b38:128d
91.56.18.142 0:0:0:0:0:ffff:5b38:128e
91.56.18.143 0:0:0:0:0:ffff:5b38:128f
91.56.18.144 0:0:0:0:0:ffff:5b38:1290
91.56.18.145 0:0:0:0:0:ffff:5b38:1291
91.56.18.146 0:0:0:0:0:ffff:5b38:1292
91.56.18.147 0:0:0:0:0:ffff:5b38:1293
91.56.18.148 0:0:0:0:0:ffff:5b38:1294
91.56.18.149 0:0:0:0:0:ffff:5b38:1295
91.56.18.150 0:0:0:0:0:ffff:5b38:1296
91.56.18.151 0:0:0:0:0:ffff:5b38:1297
91.56.18.152 0:0:0:0:0:ffff:5b38:1298
91.56.18.153 0:0:0:0:0:ffff:5b38:1299
91.56.18.154 0:0:0:0:0:ffff:5b38:129a
91.56.18.155 0:0:0:0:0:ffff:5b38:129b
91.56.18.156 0:0:0:0:0:ffff:5b38:129c
91.56.18.157 0:0:0:0:0:ffff:5b38:129d
91.56.18.158 0:0:0:0:0:ffff:5b38:129e
91.56.18.159 0:0:0:0:0:ffff:5b38:129f
91.56.18.160 0:0:0:0:0:ffff:5b38:12a0
91.56.18.161 0:0:0:0:0:ffff:5b38:12a1
91.56.18.162 0:0:0:0:0:ffff:5b38:12a2
91.56.18.163 0:0:0:0:0:ffff:5b38:12a3
91.56.18.164 0:0:0:0:0:ffff:5b38:12a4
91.56.18.165 0:0:0:0:0:ffff:5b38:12a5
91.56.18.166 0:0:0:0:0:ffff:5b38:12a6
91.56.18.167 0:0:0:0:0:ffff:5b38:12a7
91.56.18.168 0:0:0:0:0:ffff:5b38:12a8
91.56.18.169 0:0:0:0:0:ffff:5b38:12a9
91.56.18.170 0:0:0:0:0:ffff:5b38:12aa
91.56.18.171 0:0:0:0:0:ffff:5b38:12ab
91.56.18.172 0:0:0:0:0:ffff:5b38:12ac
91.56.18.173 0:0:0:0:0:ffff:5b38:12ad
91.56.18.174 0:0:0:0:0:ffff:5b38:12ae
91.56.18.175 0:0:0:0:0:ffff:5b38:12af
91.56.18.176 0:0:0:0:0:ffff:5b38:12b0
91.56.18.177 0:0:0:0:0:ffff:5b38:12b1
91.56.18.178 0:0:0:0:0:ffff:5b38:12b2
91.56.18.179 0:0:0:0:0:ffff:5b38:12b3
91.56.18.180 0:0:0:0:0:ffff:5b38:12b4


91.56.18.181 0:0:0:0:0:ffff:5b38:12b5
91.56.18.182 0:0:0:0:0:ffff:5b38:12b6
91.56.18.183 0:0:0:0:0:ffff:5b38:12b7
91.56.18.184 0:0:0:0:0:ffff:5b38:12b8
91.56.18.185 0:0:0:0:0:ffff:5b38:12b9
91.56.18.186 0:0:0:0:0:ffff:5b38:12ba
91.56.18.187 0:0:0:0:0:ffff:5b38:12bb
91.56.18.188 0:0:0:0:0:ffff:5b38:12bc
91.56.18.189 0:0:0:0:0:ffff:5b38:12bd
91.56.18.190 0:0:0:0:0:ffff:5b38:12be
91.56.18.191 0:0:0:0:0:ffff:5b38:12bf
91.56.18.192 0:0:0:0:0:ffff:5b38:12c0
91.56.18.193 0:0:0:0:0:ffff:5b38:12c1
91.56.18.194 0:0:0:0:0:ffff:5b38:12c2
91.56.18.195 0:0:0:0:0:ffff:5b38:12c3
91.56.18.196 0:0:0:0:0:ffff:5b38:12c4
91.56.18.197 0:0:0:0:0:ffff:5b38:12c5
91.56.18.198 0:0:0:0:0:ffff:5b38:12c6
91.56.18.199 0:0:0:0:0:ffff:5b38:12c7
91.56.18.200 0:0:0:0:0:ffff:5b38:12c8
91.56.18.201 0:0:0:0:0:ffff:5b38:12c9
91.56.18.202 0:0:0:0:0:ffff:5b38:12ca
91.56.18.203 0:0:0:0:0:ffff:5b38:12cb
91.56.18.204 0:0:0:0:0:ffff:5b38:12cc
91.56.18.205 0:0:0:0:0:ffff:5b38:12cd
91.56.18.206 0:0:0:0:0:ffff:5b38:12ce
91.56.18.207 0:0:0:0:0:ffff:5b38:12cf
91.56.18.208 0:0:0:0:0:ffff:5b38:12d0
91.56.18.209 0:0:0:0:0:ffff:5b38:12d1
91.56.18.210 0:0:0:0:0:ffff:5b38:12d2
91.56.18.211 0:0:0:0:0:ffff:5b38:12d3
91.56.18.212 0:0:0:0:0:ffff:5b38:12d4
91.56.18.213 0:0:0:0:0:ffff:5b38:12d5
91.56.18.214 0:0:0:0:0:ffff:5b38:12d6
91.56.18.215 0:0:0:0:0:ffff:5b38:12d7
91.56.18.216 0:0:0:0:0:ffff:5b38:12d8
91.56.18.217 0:0:0:0:0:ffff:5b38:12d9
91.56.18.218 0:0:0:0:0:ffff:5b38:12da
91.56.18.219 0:0:0:0:0:ffff:5b38:12db
91.56.18.220 0:0:0:0:0:ffff:5b38:12dc
91.56.18.221 0:0:0:0:0:ffff:5b38:12dd
91.56.18.222 0:0:0:0:0:ffff:5b38:12de
91.56.18.223 0:0:0:0:0:ffff:5b38:12df
91.56.18.224 0:0:0:0:0:ffff:5b38:12e0
91.56.18.225 0:0:0:0:0:ffff:5b38:12e1
91.56.18.226 0:0:0:0:0:ffff:5b38:12e2
91.56.18.227 0:0:0:0:0:ffff:5b38:12e3
91.56.18.228 0:0:0:0:0:ffff:5b38:12e4
91.56.18.229 0:0:0:0:0:ffff:5b38:12e5
91.56.18.230 0:0:0:0:0:ffff:5b38:12e6
91.56.18.231 0:0:0:0:0:ffff:5b38:12e7
91.56.18.232 0:0:0:0:0:ffff:5b38:12e8
91.56.18.233 0:0:0:0:0:ffff:5b38:12e9
91.56.18.234 0:0:0:0:0:ffff:5b38:12ea
91.56.18.235 0:0:0:0:0:ffff:5b38:12eb
91.56.18.236 0:0:0:0:0:ffff:5b38:12ec
91.56.18.237 0:0:0:0:0:ffff:5b38:12ed
91.56.18.238 0:0:0:0:0:ffff:5b38:12ee
91.56.18.239 0:0:0:0:0:ffff:5b38:12ef
91.56.18.240 0:0:0:0:0:ffff:5b38:12f0
91.56.18.241 0:0:0:0:0:ffff:5b38:12f1
91.56.18.242 0:0:0:0:0:ffff:5b38:12f2
91.56.18.243 0:0:0:0:0:ffff:5b38:12f3
91.56.18.244 0:0:0:0:0:ffff:5b38:12f4
91.56.18.245 0:0:0:0:0:ffff:5b38:12f5
91.56.18.246 0:0:0:0:0:ffff:5b38:12f6
91.56.18.247 0:0:0:0:0:ffff:5b38:12f7
91.56.18.248 0:0:0:0:0:ffff:5b38:12f8
91.56.18.249 0:0:0:0:0:ffff:5b38:12f9
91.56.18.250 0:0:0:0:0:ffff:5b38:12fa
91.56.18.251 0:0:0:0:0:ffff:5b38:12fb
91.56.18.252 0:0:0:0:0:ffff:5b38:12fc
91.56.18.253 0:0:0:0:0:ffff:5b38:12fd
91.56.18.254 0:0:0:0:0:ffff:5b38:12fe
91.56.18.255 0:0:0:0:0:ffff:5b38:12ff


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.