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
65.121.17.1 0:0:0:0:0:ffff:4179:1101
65.121.17.2 0:0:0:0:0:ffff:4179:1102
65.121.17.3 0:0:0:0:0:ffff:4179:1103
65.121.17.4 0:0:0:0:0:ffff:4179:1104
65.121.17.5 0:0:0:0:0:ffff:4179:1105
65.121.17.6 0:0:0:0:0:ffff:4179:1106
65.121.17.7 0:0:0:0:0:ffff:4179:1107
65.121.17.8 0:0:0:0:0:ffff:4179:1108
65.121.17.9 0:0:0:0:0:ffff:4179:1109
65.121.17.10 0:0:0:0:0:ffff:4179:110a
65.121.17.11 0:0:0:0:0:ffff:4179:110b
65.121.17.12 0:0:0:0:0:ffff:4179:110c
65.121.17.13 0:0:0:0:0:ffff:4179:110d
65.121.17.14 0:0:0:0:0:ffff:4179:110e
65.121.17.15 0:0:0:0:0:ffff:4179:110f
65.121.17.16 0:0:0:0:0:ffff:4179:1110
65.121.17.17 0:0:0:0:0:ffff:4179:1111
65.121.17.18 0:0:0:0:0:ffff:4179:1112
65.121.17.19 0:0:0:0:0:ffff:4179:1113
65.121.17.20 0:0:0:0:0:ffff:4179:1114
65.121.17.21 0:0:0:0:0:ffff:4179:1115
65.121.17.22 0:0:0:0:0:ffff:4179:1116
65.121.17.23 0:0:0:0:0:ffff:4179:1117
65.121.17.24 0:0:0:0:0:ffff:4179:1118
65.121.17.25 0:0:0:0:0:ffff:4179:1119
65.121.17.26 0:0:0:0:0:ffff:4179:111a
65.121.17.27 0:0:0:0:0:ffff:4179:111b
65.121.17.28 0:0:0:0:0:ffff:4179:111c
65.121.17.29 0:0:0:0:0:ffff:4179:111d
65.121.17.30 0:0:0:0:0:ffff:4179:111e
65.121.17.31 0:0:0:0:0:ffff:4179:111f
65.121.17.32 0:0:0:0:0:ffff:4179:1120
65.121.17.33 0:0:0:0:0:ffff:4179:1121
65.121.17.34 0:0:0:0:0:ffff:4179:1122
65.121.17.35 0:0:0:0:0:ffff:4179:1123
65.121.17.36 0:0:0:0:0:ffff:4179:1124
65.121.17.37 0:0:0:0:0:ffff:4179:1125
65.121.17.38 0:0:0:0:0:ffff:4179:1126
65.121.17.39 0:0:0:0:0:ffff:4179:1127
65.121.17.40 0:0:0:0:0:ffff:4179:1128
65.121.17.41 0:0:0:0:0:ffff:4179:1129
65.121.17.42 0:0:0:0:0:ffff:4179:112a
65.121.17.43 0:0:0:0:0:ffff:4179:112b
65.121.17.44 0:0:0:0:0:ffff:4179:112c
65.121.17.45 0:0:0:0:0:ffff:4179:112d
65.121.17.46 0:0:0:0:0:ffff:4179:112e
65.121.17.47 0:0:0:0:0:ffff:4179:112f
65.121.17.48 0:0:0:0:0:ffff:4179:1130
65.121.17.49 0:0:0:0:0:ffff:4179:1131
65.121.17.50 0:0:0:0:0:ffff:4179:1132
65.121.17.51 0:0:0:0:0:ffff:4179:1133
65.121.17.52 0:0:0:0:0:ffff:4179:1134
65.121.17.53 0:0:0:0:0:ffff:4179:1135
65.121.17.54 0:0:0:0:0:ffff:4179:1136
65.121.17.55 0:0:0:0:0:ffff:4179:1137
65.121.17.56 0:0:0:0:0:ffff:4179:1138
65.121.17.57 0:0:0:0:0:ffff:4179:1139
65.121.17.58 0:0:0:0:0:ffff:4179:113a
65.121.17.59 0:0:0:0:0:ffff:4179:113b
65.121.17.60 0:0:0:0:0:ffff:4179:113c


65.121.17.61 0:0:0:0:0:ffff:4179:113d
65.121.17.62 0:0:0:0:0:ffff:4179:113e
65.121.17.63 0:0:0:0:0:ffff:4179:113f
65.121.17.64 0:0:0:0:0:ffff:4179:1140
65.121.17.65 0:0:0:0:0:ffff:4179:1141
65.121.17.66 0:0:0:0:0:ffff:4179:1142
65.121.17.67 0:0:0:0:0:ffff:4179:1143
65.121.17.68 0:0:0:0:0:ffff:4179:1144
65.121.17.69 0:0:0:0:0:ffff:4179:1145
65.121.17.70 0:0:0:0:0:ffff:4179:1146
65.121.17.71 0:0:0:0:0:ffff:4179:1147
65.121.17.72 0:0:0:0:0:ffff:4179:1148
65.121.17.73 0:0:0:0:0:ffff:4179:1149
65.121.17.74 0:0:0:0:0:ffff:4179:114a
65.121.17.75 0:0:0:0:0:ffff:4179:114b
65.121.17.76 0:0:0:0:0:ffff:4179:114c
65.121.17.77 0:0:0:0:0:ffff:4179:114d
65.121.17.78 0:0:0:0:0:ffff:4179:114e
65.121.17.79 0:0:0:0:0:ffff:4179:114f
65.121.17.80 0:0:0:0:0:ffff:4179:1150
65.121.17.81 0:0:0:0:0:ffff:4179:1151
65.121.17.82 0:0:0:0:0:ffff:4179:1152
65.121.17.83 0:0:0:0:0:ffff:4179:1153
65.121.17.84 0:0:0:0:0:ffff:4179:1154
65.121.17.85 0:0:0:0:0:ffff:4179:1155
65.121.17.86 0:0:0:0:0:ffff:4179:1156
65.121.17.87 0:0:0:0:0:ffff:4179:1157
65.121.17.88 0:0:0:0:0:ffff:4179:1158
65.121.17.89 0:0:0:0:0:ffff:4179:1159
65.121.17.90 0:0:0:0:0:ffff:4179:115a
65.121.17.91 0:0:0:0:0:ffff:4179:115b
65.121.17.92 0:0:0:0:0:ffff:4179:115c
65.121.17.93 0:0:0:0:0:ffff:4179:115d
65.121.17.94 0:0:0:0:0:ffff:4179:115e
65.121.17.95 0:0:0:0:0:ffff:4179:115f
65.121.17.96 0:0:0:0:0:ffff:4179:1160
65.121.17.97 0:0:0:0:0:ffff:4179:1161
65.121.17.98 0:0:0:0:0:ffff:4179:1162
65.121.17.99 0:0:0:0:0:ffff:4179:1163
65.121.17.100 0:0:0:0:0:ffff:4179:1164
65.121.17.101 0:0:0:0:0:ffff:4179:1165
65.121.17.102 0:0:0:0:0:ffff:4179:1166
65.121.17.103 0:0:0:0:0:ffff:4179:1167
65.121.17.104 0:0:0:0:0:ffff:4179:1168
65.121.17.105 0:0:0:0:0:ffff:4179:1169
65.121.17.106 0:0:0:0:0:ffff:4179:116a
65.121.17.107 0:0:0:0:0:ffff:4179:116b
65.121.17.108 0:0:0:0:0:ffff:4179:116c
65.121.17.109 0:0:0:0:0:ffff:4179:116d
65.121.17.110 0:0:0:0:0:ffff:4179:116e
65.121.17.111 0:0:0:0:0:ffff:4179:116f
65.121.17.112 0:0:0:0:0:ffff:4179:1170
65.121.17.113 0:0:0:0:0:ffff:4179:1171
65.121.17.114 0:0:0:0:0:ffff:4179:1172
65.121.17.115 0:0:0:0:0:ffff:4179:1173
65.121.17.116 0:0:0:0:0:ffff:4179:1174
65.121.17.117 0:0:0:0:0:ffff:4179:1175
65.121.17.118 0:0:0:0:0:ffff:4179:1176
65.121.17.119 0:0:0:0:0:ffff:4179:1177
65.121.17.120 0:0:0:0:0:ffff:4179:1178


65.121.17.121 0:0:0:0:0:ffff:4179:1179
65.121.17.122 0:0:0:0:0:ffff:4179:117a
65.121.17.123 0:0:0:0:0:ffff:4179:117b
65.121.17.124 0:0:0:0:0:ffff:4179:117c
65.121.17.125 0:0:0:0:0:ffff:4179:117d
65.121.17.126 0:0:0:0:0:ffff:4179:117e
65.121.17.127 0:0:0:0:0:ffff:4179:117f
65.121.17.128 0:0:0:0:0:ffff:4179:1180
65.121.17.129 0:0:0:0:0:ffff:4179:1181
65.121.17.130 0:0:0:0:0:ffff:4179:1182
65.121.17.131 0:0:0:0:0:ffff:4179:1183
65.121.17.132 0:0:0:0:0:ffff:4179:1184
65.121.17.133 0:0:0:0:0:ffff:4179:1185
65.121.17.134 0:0:0:0:0:ffff:4179:1186
65.121.17.135 0:0:0:0:0:ffff:4179:1187
65.121.17.136 0:0:0:0:0:ffff:4179:1188
65.121.17.137 0:0:0:0:0:ffff:4179:1189
65.121.17.138 0:0:0:0:0:ffff:4179:118a
65.121.17.139 0:0:0:0:0:ffff:4179:118b
65.121.17.140 0:0:0:0:0:ffff:4179:118c
65.121.17.141 0:0:0:0:0:ffff:4179:118d
65.121.17.142 0:0:0:0:0:ffff:4179:118e
65.121.17.143 0:0:0:0:0:ffff:4179:118f
65.121.17.144 0:0:0:0:0:ffff:4179:1190
65.121.17.145 0:0:0:0:0:ffff:4179:1191
65.121.17.146 0:0:0:0:0:ffff:4179:1192
65.121.17.147 0:0:0:0:0:ffff:4179:1193
65.121.17.148 0:0:0:0:0:ffff:4179:1194
65.121.17.149 0:0:0:0:0:ffff:4179:1195
65.121.17.150 0:0:0:0:0:ffff:4179:1196
65.121.17.151 0:0:0:0:0:ffff:4179:1197
65.121.17.152 0:0:0:0:0:ffff:4179:1198
65.121.17.153 0:0:0:0:0:ffff:4179:1199
65.121.17.154 0:0:0:0:0:ffff:4179:119a
65.121.17.155 0:0:0:0:0:ffff:4179:119b
65.121.17.156 0:0:0:0:0:ffff:4179:119c
65.121.17.157 0:0:0:0:0:ffff:4179:119d
65.121.17.158 0:0:0:0:0:ffff:4179:119e
65.121.17.159 0:0:0:0:0:ffff:4179:119f
65.121.17.160 0:0:0:0:0:ffff:4179:11a0
65.121.17.161 0:0:0:0:0:ffff:4179:11a1
65.121.17.162 0:0:0:0:0:ffff:4179:11a2
65.121.17.163 0:0:0:0:0:ffff:4179:11a3
65.121.17.164 0:0:0:0:0:ffff:4179:11a4
65.121.17.165 0:0:0:0:0:ffff:4179:11a5
65.121.17.166 0:0:0:0:0:ffff:4179:11a6
65.121.17.167 0:0:0:0:0:ffff:4179:11a7
65.121.17.168 0:0:0:0:0:ffff:4179:11a8
65.121.17.169 0:0:0:0:0:ffff:4179:11a9
65.121.17.170 0:0:0:0:0:ffff:4179:11aa
65.121.17.171 0:0:0:0:0:ffff:4179:11ab
65.121.17.172 0:0:0:0:0:ffff:4179:11ac
65.121.17.173 0:0:0:0:0:ffff:4179:11ad
65.121.17.174 0:0:0:0:0:ffff:4179:11ae
65.121.17.175 0:0:0:0:0:ffff:4179:11af
65.121.17.176 0:0:0:0:0:ffff:4179:11b0
65.121.17.177 0:0:0:0:0:ffff:4179:11b1
65.121.17.178 0:0:0:0:0:ffff:4179:11b2
65.121.17.179 0:0:0:0:0:ffff:4179:11b3
65.121.17.180 0:0:0:0:0:ffff:4179:11b4


65.121.17.181 0:0:0:0:0:ffff:4179:11b5
65.121.17.182 0:0:0:0:0:ffff:4179:11b6
65.121.17.183 0:0:0:0:0:ffff:4179:11b7
65.121.17.184 0:0:0:0:0:ffff:4179:11b8
65.121.17.185 0:0:0:0:0:ffff:4179:11b9
65.121.17.186 0:0:0:0:0:ffff:4179:11ba
65.121.17.187 0:0:0:0:0:ffff:4179:11bb
65.121.17.188 0:0:0:0:0:ffff:4179:11bc
65.121.17.189 0:0:0:0:0:ffff:4179:11bd
65.121.17.190 0:0:0:0:0:ffff:4179:11be
65.121.17.191 0:0:0:0:0:ffff:4179:11bf
65.121.17.192 0:0:0:0:0:ffff:4179:11c0
65.121.17.193 0:0:0:0:0:ffff:4179:11c1
65.121.17.194 0:0:0:0:0:ffff:4179:11c2
65.121.17.195 0:0:0:0:0:ffff:4179:11c3
65.121.17.196 0:0:0:0:0:ffff:4179:11c4
65.121.17.197 0:0:0:0:0:ffff:4179:11c5
65.121.17.198 0:0:0:0:0:ffff:4179:11c6
65.121.17.199 0:0:0:0:0:ffff:4179:11c7
65.121.17.200 0:0:0:0:0:ffff:4179:11c8
65.121.17.201 0:0:0:0:0:ffff:4179:11c9
65.121.17.202 0:0:0:0:0:ffff:4179:11ca
65.121.17.203 0:0:0:0:0:ffff:4179:11cb
65.121.17.204 0:0:0:0:0:ffff:4179:11cc
65.121.17.205 0:0:0:0:0:ffff:4179:11cd
65.121.17.206 0:0:0:0:0:ffff:4179:11ce
65.121.17.207 0:0:0:0:0:ffff:4179:11cf
65.121.17.208 0:0:0:0:0:ffff:4179:11d0
65.121.17.209 0:0:0:0:0:ffff:4179:11d1
65.121.17.210 0:0:0:0:0:ffff:4179:11d2
65.121.17.211 0:0:0:0:0:ffff:4179:11d3
65.121.17.212 0:0:0:0:0:ffff:4179:11d4
65.121.17.213 0:0:0:0:0:ffff:4179:11d5
65.121.17.214 0:0:0:0:0:ffff:4179:11d6
65.121.17.215 0:0:0:0:0:ffff:4179:11d7
65.121.17.216 0:0:0:0:0:ffff:4179:11d8
65.121.17.217 0:0:0:0:0:ffff:4179:11d9
65.121.17.218 0:0:0:0:0:ffff:4179:11da
65.121.17.219 0:0:0:0:0:ffff:4179:11db
65.121.17.220 0:0:0:0:0:ffff:4179:11dc
65.121.17.221 0:0:0:0:0:ffff:4179:11dd
65.121.17.222 0:0:0:0:0:ffff:4179:11de
65.121.17.223 0:0:0:0:0:ffff:4179:11df
65.121.17.224 0:0:0:0:0:ffff:4179:11e0
65.121.17.225 0:0:0:0:0:ffff:4179:11e1
65.121.17.226 0:0:0:0:0:ffff:4179:11e2
65.121.17.227 0:0:0:0:0:ffff:4179:11e3
65.121.17.228 0:0:0:0:0:ffff:4179:11e4
65.121.17.229 0:0:0:0:0:ffff:4179:11e5
65.121.17.230 0:0:0:0:0:ffff:4179:11e6
65.121.17.231 0:0:0:0:0:ffff:4179:11e7
65.121.17.232 0:0:0:0:0:ffff:4179:11e8
65.121.17.233 0:0:0:0:0:ffff:4179:11e9
65.121.17.234 0:0:0:0:0:ffff:4179:11ea
65.121.17.235 0:0:0:0:0:ffff:4179:11eb
65.121.17.236 0:0:0:0:0:ffff:4179:11ec
65.121.17.237 0:0:0:0:0:ffff:4179:11ed
65.121.17.238 0:0:0:0:0:ffff:4179:11ee
65.121.17.239 0:0:0:0:0:ffff:4179:11ef
65.121.17.240 0:0:0:0:0:ffff:4179:11f0
65.121.17.241 0:0:0:0:0:ffff:4179:11f1
65.121.17.242 0:0:0:0:0:ffff:4179:11f2
65.121.17.243 0:0:0:0:0:ffff:4179:11f3
65.121.17.244 0:0:0:0:0:ffff:4179:11f4
65.121.17.245 0:0:0:0:0:ffff:4179:11f5
65.121.17.246 0:0:0:0:0:ffff:4179:11f6
65.121.17.247 0:0:0:0:0:ffff:4179:11f7
65.121.17.248 0:0:0:0:0:ffff:4179:11f8
65.121.17.249 0:0:0:0:0:ffff:4179:11f9
65.121.17.250 0:0:0:0:0:ffff:4179:11fa
65.121.17.251 0:0:0:0:0:ffff:4179:11fb
65.121.17.252 0:0:0:0:0:ffff:4179:11fc
65.121.17.253 0:0:0:0:0:ffff:4179:11fd
65.121.17.254 0:0:0:0:0:ffff:4179:11fe
65.121.17.255 0:0:0:0:0:ffff:4179:11ff


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.