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 Address	IPv6 Address
100.16.18.1	0:0:0:0:0:ffff:6410:1201
100.16.18.2	0:0:0:0:0:ffff:6410:1202
100.16.18.3	0:0:0:0:0:ffff:6410:1203
100.16.18.4	0:0:0:0:0:ffff:6410:1204
100.16.18.5	0:0:0:0:0:ffff:6410:1205
100.16.18.6	0:0:0:0:0:ffff:6410:1206
100.16.18.7	0:0:0:0:0:ffff:6410:1207
100.16.18.8	0:0:0:0:0:ffff:6410:1208
100.16.18.9	0:0:0:0:0:ffff:6410:1209
100.16.18.10	0:0:0:0:0:ffff:6410:120a
100.16.18.11	0:0:0:0:0:ffff:6410:120b
100.16.18.12	0:0:0:0:0:ffff:6410:120c
100.16.18.13	0:0:0:0:0:ffff:6410:120d
100.16.18.14	0:0:0:0:0:ffff:6410:120e
100.16.18.15	0:0:0:0:0:ffff:6410:120f
100.16.18.16	0:0:0:0:0:ffff:6410:1210
100.16.18.17	0:0:0:0:0:ffff:6410:1211
100.16.18.18	0:0:0:0:0:ffff:6410:1212
100.16.18.19	0:0:0:0:0:ffff:6410:1213
100.16.18.20	0:0:0:0:0:ffff:6410:1214
100.16.18.21	0:0:0:0:0:ffff:6410:1215
100.16.18.22	0:0:0:0:0:ffff:6410:1216
100.16.18.23	0:0:0:0:0:ffff:6410:1217
100.16.18.24	0:0:0:0:0:ffff:6410:1218
100.16.18.25	0:0:0:0:0:ffff:6410:1219
100.16.18.26	0:0:0:0:0:ffff:6410:121a
100.16.18.27	0:0:0:0:0:ffff:6410:121b
100.16.18.28	0:0:0:0:0:ffff:6410:121c
100.16.18.29	0:0:0:0:0:ffff:6410:121d
100.16.18.30	0:0:0:0:0:ffff:6410:121e
100.16.18.31	0:0:0:0:0:ffff:6410:121f
100.16.18.32	0:0:0:0:0:ffff:6410:1220
100.16.18.33	0:0:0:0:0:ffff:6410:1221
100.16.18.34	0:0:0:0:0:ffff:6410:1222
100.16.18.35	0:0:0:0:0:ffff:6410:1223
100.16.18.36	0:0:0:0:0:ffff:6410:1224
100.16.18.37	0:0:0:0:0:ffff:6410:1225
100.16.18.38	0:0:0:0:0:ffff:6410:1226
100.16.18.39	0:0:0:0:0:ffff:6410:1227
100.16.18.40	0:0:0:0:0:ffff:6410:1228
100.16.18.41	0:0:0:0:0:ffff:6410:1229
100.16.18.42	0:0:0:0:0:ffff:6410:122a
100.16.18.43	0:0:0:0:0:ffff:6410:122b
100.16.18.44	0:0:0:0:0:ffff:6410:122c
100.16.18.45	0:0:0:0:0:ffff:6410:122d
100.16.18.46	0:0:0:0:0:ffff:6410:122e
100.16.18.47	0:0:0:0:0:ffff:6410:122f
100.16.18.48	0:0:0:0:0:ffff:6410:1230
100.16.18.49	0:0:0:0:0:ffff:6410:1231
100.16.18.50	0:0:0:0:0:ffff:6410:1232
100.16.18.51	0:0:0:0:0:ffff:6410:1233
100.16.18.52	0:0:0:0:0:ffff:6410:1234
100.16.18.53	0:0:0:0:0:ffff:6410:1235
100.16.18.54	0:0:0:0:0:ffff:6410:1236
100.16.18.55	0:0:0:0:0:ffff:6410:1237
100.16.18.56	0:0:0:0:0:ffff:6410:1238
100.16.18.57	0:0:0:0:0:ffff:6410:1239
100.16.18.58	0:0:0:0:0:ffff:6410:123a
100.16.18.59	0:0:0:0:0:ffff:6410:123b
100.16.18.60	0:0:0:0:0:ffff:6410:123c

100.16.18.61	0:0:0:0:0:ffff:6410:123d
100.16.18.62	0:0:0:0:0:ffff:6410:123e
100.16.18.63	0:0:0:0:0:ffff:6410:123f
100.16.18.64	0:0:0:0:0:ffff:6410:1240
100.16.18.65	0:0:0:0:0:ffff:6410:1241
100.16.18.66	0:0:0:0:0:ffff:6410:1242
100.16.18.67	0:0:0:0:0:ffff:6410:1243
100.16.18.68	0:0:0:0:0:ffff:6410:1244
100.16.18.69	0:0:0:0:0:ffff:6410:1245
100.16.18.70	0:0:0:0:0:ffff:6410:1246
100.16.18.71	0:0:0:0:0:ffff:6410:1247
100.16.18.72	0:0:0:0:0:ffff:6410:1248
100.16.18.73	0:0:0:0:0:ffff:6410:1249
100.16.18.74	0:0:0:0:0:ffff:6410:124a
100.16.18.75	0:0:0:0:0:ffff:6410:124b
100.16.18.76	0:0:0:0:0:ffff:6410:124c
100.16.18.77	0:0:0:0:0:ffff:6410:124d
100.16.18.78	0:0:0:0:0:ffff:6410:124e
100.16.18.79	0:0:0:0:0:ffff:6410:124f
100.16.18.80	0:0:0:0:0:ffff:6410:1250
100.16.18.81	0:0:0:0:0:ffff:6410:1251
100.16.18.82	0:0:0:0:0:ffff:6410:1252
100.16.18.83	0:0:0:0:0:ffff:6410:1253
100.16.18.84	0:0:0:0:0:ffff:6410:1254
100.16.18.85	0:0:0:0:0:ffff:6410:1255
100.16.18.86	0:0:0:0:0:ffff:6410:1256
100.16.18.87	0:0:0:0:0:ffff:6410:1257
100.16.18.88	0:0:0:0:0:ffff:6410:1258
100.16.18.89	0:0:0:0:0:ffff:6410:1259
100.16.18.90	0:0:0:0:0:ffff:6410:125a
100.16.18.91	0:0:0:0:0:ffff:6410:125b
100.16.18.92	0:0:0:0:0:ffff:6410:125c
100.16.18.93	0:0:0:0:0:ffff:6410:125d
100.16.18.94	0:0:0:0:0:ffff:6410:125e
100.16.18.95	0:0:0:0:0:ffff:6410:125f
100.16.18.96	0:0:0:0:0:ffff:6410:1260
100.16.18.97	0:0:0:0:0:ffff:6410:1261
100.16.18.98	0:0:0:0:0:ffff:6410:1262
100.16.18.99	0:0:0:0:0:ffff:6410:1263
100.16.18.100	0:0:0:0:0:ffff:6410:1264
100.16.18.101	0:0:0:0:0:ffff:6410:1265
100.16.18.102	0:0:0:0:0:ffff:6410:1266
100.16.18.103	0:0:0:0:0:ffff:6410:1267
100.16.18.104	0:0:0:0:0:ffff:6410:1268
100.16.18.105	0:0:0:0:0:ffff:6410:1269
100.16.18.106	0:0:0:0:0:ffff:6410:126a
100.16.18.107	0:0:0:0:0:ffff:6410:126b
100.16.18.108	0:0:0:0:0:ffff:6410:126c
100.16.18.109	0:0:0:0:0:ffff:6410:126d
100.16.18.110	0:0:0:0:0:ffff:6410:126e
100.16.18.111	0:0:0:0:0:ffff:6410:126f
100.16.18.112	0:0:0:0:0:ffff:6410:1270
100.16.18.113	0:0:0:0:0:ffff:6410:1271
100.16.18.114	0:0:0:0:0:ffff:6410:1272
100.16.18.115	0:0:0:0:0:ffff:6410:1273
100.16.18.116	0:0:0:0:0:ffff:6410:1274
100.16.18.117	0:0:0:0:0:ffff:6410:1275
100.16.18.118	0:0:0:0:0:ffff:6410:1276
100.16.18.119	0:0:0:0:0:ffff:6410:1277
100.16.18.120	0:0:0:0:0:ffff:6410:1278

100.16.18.121	0:0:0:0:0:ffff:6410:1279
100.16.18.122	0:0:0:0:0:ffff:6410:127a
100.16.18.123	0:0:0:0:0:ffff:6410:127b
100.16.18.124	0:0:0:0:0:ffff:6410:127c
100.16.18.125	0:0:0:0:0:ffff:6410:127d
100.16.18.126	0:0:0:0:0:ffff:6410:127e
100.16.18.127	0:0:0:0:0:ffff:6410:127f
100.16.18.128	0:0:0:0:0:ffff:6410:1280
100.16.18.129	0:0:0:0:0:ffff:6410:1281
100.16.18.130	0:0:0:0:0:ffff:6410:1282
100.16.18.131	0:0:0:0:0:ffff:6410:1283
100.16.18.132	0:0:0:0:0:ffff:6410:1284
100.16.18.133	0:0:0:0:0:ffff:6410:1285
100.16.18.134	0:0:0:0:0:ffff:6410:1286
100.16.18.135	0:0:0:0:0:ffff:6410:1287
100.16.18.136	0:0:0:0:0:ffff:6410:1288
100.16.18.137	0:0:0:0:0:ffff:6410:1289
100.16.18.138	0:0:0:0:0:ffff:6410:128a
100.16.18.139	0:0:0:0:0:ffff:6410:128b
100.16.18.140	0:0:0:0:0:ffff:6410:128c
100.16.18.141	0:0:0:0:0:ffff:6410:128d
100.16.18.142	0:0:0:0:0:ffff:6410:128e
100.16.18.143	0:0:0:0:0:ffff:6410:128f
100.16.18.144	0:0:0:0:0:ffff:6410:1290
100.16.18.145	0:0:0:0:0:ffff:6410:1291
100.16.18.146	0:0:0:0:0:ffff:6410:1292
100.16.18.147	0:0:0:0:0:ffff:6410:1293
100.16.18.148	0:0:0:0:0:ffff:6410:1294
100.16.18.149	0:0:0:0:0:ffff:6410:1295
100.16.18.150	0:0:0:0:0:ffff:6410:1296
100.16.18.151	0:0:0:0:0:ffff:6410:1297
100.16.18.152	0:0:0:0:0:ffff:6410:1298
100.16.18.153	0:0:0:0:0:ffff:6410:1299
100.16.18.154	0:0:0:0:0:ffff:6410:129a
100.16.18.155	0:0:0:0:0:ffff:6410:129b
100.16.18.156	0:0:0:0:0:ffff:6410:129c
100.16.18.157	0:0:0:0:0:ffff:6410:129d
100.16.18.158	0:0:0:0:0:ffff:6410:129e
100.16.18.159	0:0:0:0:0:ffff:6410:129f
100.16.18.160	0:0:0:0:0:ffff:6410:12a0
100.16.18.161	0:0:0:0:0:ffff:6410:12a1
100.16.18.162	0:0:0:0:0:ffff:6410:12a2
100.16.18.163	0:0:0:0:0:ffff:6410:12a3
100.16.18.164	0:0:0:0:0:ffff:6410:12a4
100.16.18.165	0:0:0:0:0:ffff:6410:12a5
100.16.18.166	0:0:0:0:0:ffff:6410:12a6
100.16.18.167	0:0:0:0:0:ffff:6410:12a7
100.16.18.168	0:0:0:0:0:ffff:6410:12a8
100.16.18.169	0:0:0:0:0:ffff:6410:12a9
100.16.18.170	0:0:0:0:0:ffff:6410:12aa
100.16.18.171	0:0:0:0:0:ffff:6410:12ab
100.16.18.172	0:0:0:0:0:ffff:6410:12ac
100.16.18.173	0:0:0:0:0:ffff:6410:12ad
100.16.18.174	0:0:0:0:0:ffff:6410:12ae
100.16.18.175	0:0:0:0:0:ffff:6410:12af
100.16.18.176	0:0:0:0:0:ffff:6410:12b0
100.16.18.177	0:0:0:0:0:ffff:6410:12b1
100.16.18.178	0:0:0:0:0:ffff:6410:12b2
100.16.18.179	0:0:0:0:0:ffff:6410:12b3
100.16.18.180	0:0:0:0:0:ffff:6410:12b4

100.16.18.181	0:0:0:0:0:ffff:6410:12b5
100.16.18.182	0:0:0:0:0:ffff:6410:12b6
100.16.18.183	0:0:0:0:0:ffff:6410:12b7
100.16.18.184	0:0:0:0:0:ffff:6410:12b8
100.16.18.185	0:0:0:0:0:ffff:6410:12b9
100.16.18.186	0:0:0:0:0:ffff:6410:12ba
100.16.18.187	0:0:0:0:0:ffff:6410:12bb
100.16.18.188	0:0:0:0:0:ffff:6410:12bc
100.16.18.189	0:0:0:0:0:ffff:6410:12bd
100.16.18.190	0:0:0:0:0:ffff:6410:12be
100.16.18.191	0:0:0:0:0:ffff:6410:12bf
100.16.18.192	0:0:0:0:0:ffff:6410:12c0
100.16.18.193	0:0:0:0:0:ffff:6410:12c1
100.16.18.194	0:0:0:0:0:ffff:6410:12c2
100.16.18.195	0:0:0:0:0:ffff:6410:12c3
100.16.18.196	0:0:0:0:0:ffff:6410:12c4
100.16.18.197	0:0:0:0:0:ffff:6410:12c5
100.16.18.198	0:0:0:0:0:ffff:6410:12c6
100.16.18.199	0:0:0:0:0:ffff:6410:12c7
100.16.18.200	0:0:0:0:0:ffff:6410:12c8
100.16.18.201	0:0:0:0:0:ffff:6410:12c9
100.16.18.202	0:0:0:0:0:ffff:6410:12ca
100.16.18.203	0:0:0:0:0:ffff:6410:12cb
100.16.18.204	0:0:0:0:0:ffff:6410:12cc
100.16.18.205	0:0:0:0:0:ffff:6410:12cd
100.16.18.206	0:0:0:0:0:ffff:6410:12ce
100.16.18.207	0:0:0:0:0:ffff:6410:12cf
100.16.18.208	0:0:0:0:0:ffff:6410:12d0
100.16.18.209	0:0:0:0:0:ffff:6410:12d1
100.16.18.210	0:0:0:0:0:ffff:6410:12d2
100.16.18.211	0:0:0:0:0:ffff:6410:12d3
100.16.18.212	0:0:0:0:0:ffff:6410:12d4
100.16.18.213	0:0:0:0:0:ffff:6410:12d5
100.16.18.214	0:0:0:0:0:ffff:6410:12d6
100.16.18.215	0:0:0:0:0:ffff:6410:12d7
100.16.18.216	0:0:0:0:0:ffff:6410:12d8
100.16.18.217	0:0:0:0:0:ffff:6410:12d9
100.16.18.218	0:0:0:0:0:ffff:6410:12da
100.16.18.219	0:0:0:0:0:ffff:6410:12db
100.16.18.220	0:0:0:0:0:ffff:6410:12dc
100.16.18.221	0:0:0:0:0:ffff:6410:12dd
100.16.18.222	0:0:0:0:0:ffff:6410:12de
100.16.18.223	0:0:0:0:0:ffff:6410:12df
100.16.18.224	0:0:0:0:0:ffff:6410:12e0
100.16.18.225	0:0:0:0:0:ffff:6410:12e1
100.16.18.226	0:0:0:0:0:ffff:6410:12e2
100.16.18.227	0:0:0:0:0:ffff:6410:12e3
100.16.18.228	0:0:0:0:0:ffff:6410:12e4
100.16.18.229	0:0:0:0:0:ffff:6410:12e5
100.16.18.230	0:0:0:0:0:ffff:6410:12e6
100.16.18.231	0:0:0:0:0:ffff:6410:12e7
100.16.18.232	0:0:0:0:0:ffff:6410:12e8
100.16.18.233	0:0:0:0:0:ffff:6410:12e9
100.16.18.234	0:0:0:0:0:ffff:6410:12ea
100.16.18.235	0:0:0:0:0:ffff:6410:12eb
100.16.18.236	0:0:0:0:0:ffff:6410:12ec
100.16.18.237	0:0:0:0:0:ffff:6410:12ed
100.16.18.238	0:0:0:0:0:ffff:6410:12ee
100.16.18.239	0:0:0:0:0:ffff:6410:12ef
100.16.18.240	0:0:0:0:0:ffff:6410:12f0
100.16.18.241	0:0:0:0:0:ffff:6410:12f1
100.16.18.242	0:0:0:0:0:ffff:6410:12f2
100.16.18.243	0:0:0:0:0:ffff:6410:12f3
100.16.18.244	0:0:0:0:0:ffff:6410:12f4
100.16.18.245	0:0:0:0:0:ffff:6410:12f5
100.16.18.246	0:0:0:0:0:ffff:6410:12f6
100.16.18.247	0:0:0:0:0:ffff:6410:12f7
100.16.18.248	0:0:0:0:0:ffff:6410:12f8
100.16.18.249	0:0:0:0:0:ffff:6410:12f9
100.16.18.250	0:0:0:0:0:ffff:6410:12fa
100.16.18.251	0:0:0:0:0:ffff:6410:12fb
100.16.18.252	0:0:0:0:0:ffff:6410:12fc
100.16.18.253	0:0:0:0:0:ffff:6410:12fd
100.16.18.254	0:0:0:0:0:ffff:6410:12fe
100.16.18.255	0:0:0:0:0:ffff:6410:12ff

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.