IP Find IPv6 Subnet/Network and its host address ranges

What is an IPv6 IP address its network and host address ranges?

IPv6 addresses are each 128 bits long. Because each digit in an IPv6 address can have 16 different values (from 0 to 15), each digit represents the overall value of 4 bits (one nibble), with 32 digits total. As with IPv4, CIDR notation describes ranges in terms of a common prefix of bits. For example 2001:db8::/32 means that the range described has the first 32 bits set to the binary digits 00100000000000010000110110111000. Also like IPv4, MediaWiki implements IPv6 rangeblocks using CIDR notation.
Following are the ranges of IPv6 subnet/network address and their host addresses.

IPv6 Address	IPv4 Address
b51a:901b:cb15:8045:ada8:cdcd:80fb:b101	128.251.177.1
b51a:901b:cb15:8045:ada8:cdcd:80fb:b102	128.251.177.2
b51a:901b:cb15:8045:ada8:cdcd:80fb:b103	128.251.177.3
b51a:901b:cb15:8045:ada8:cdcd:80fb:b104	128.251.177.4
b51a:901b:cb15:8045:ada8:cdcd:80fb:b105	128.251.177.5
b51a:901b:cb15:8045:ada8:cdcd:80fb:b106	128.251.177.6
b51a:901b:cb15:8045:ada8:cdcd:80fb:b107	128.251.177.7
b51a:901b:cb15:8045:ada8:cdcd:80fb:b108	128.251.177.8
b51a:901b:cb15:8045:ada8:cdcd:80fb:b109	128.251.177.9
b51a:901b:cb15:8045:ada8:cdcd:80fb:b10a	128.251.177.10
b51a:901b:cb15:8045:ada8:cdcd:80fb:b10b	128.251.177.11
b51a:901b:cb15:8045:ada8:cdcd:80fb:b10c	128.251.177.12
b51a:901b:cb15:8045:ada8:cdcd:80fb:b10d	128.251.177.13
b51a:901b:cb15:8045:ada8:cdcd:80fb:b10e	128.251.177.14
b51a:901b:cb15:8045:ada8:cdcd:80fb:b10f	128.251.177.15
b51a:901b:cb15:8045:ada8:cdcd:80fb:b110	128.251.177.16
b51a:901b:cb15:8045:ada8:cdcd:80fb:b111	128.251.177.17
b51a:901b:cb15:8045:ada8:cdcd:80fb:b112	128.251.177.18
b51a:901b:cb15:8045:ada8:cdcd:80fb:b113	128.251.177.19
b51a:901b:cb15:8045:ada8:cdcd:80fb:b114	128.251.177.20
b51a:901b:cb15:8045:ada8:cdcd:80fb:b115	128.251.177.21
b51a:901b:cb15:8045:ada8:cdcd:80fb:b116	128.251.177.22
b51a:901b:cb15:8045:ada8:cdcd:80fb:b117	128.251.177.23
b51a:901b:cb15:8045:ada8:cdcd:80fb:b118	128.251.177.24
b51a:901b:cb15:8045:ada8:cdcd:80fb:b119	128.251.177.25
b51a:901b:cb15:8045:ada8:cdcd:80fb:b11a	128.251.177.26
b51a:901b:cb15:8045:ada8:cdcd:80fb:b11b	128.251.177.27
b51a:901b:cb15:8045:ada8:cdcd:80fb:b11c	128.251.177.28
b51a:901b:cb15:8045:ada8:cdcd:80fb:b11d	128.251.177.29
b51a:901b:cb15:8045:ada8:cdcd:80fb:b11e	128.251.177.30
b51a:901b:cb15:8045:ada8:cdcd:80fb:b11f	128.251.177.31
b51a:901b:cb15:8045:ada8:cdcd:80fb:b120	128.251.177.32
b51a:901b:cb15:8045:ada8:cdcd:80fb:b121	128.251.177.33
b51a:901b:cb15:8045:ada8:cdcd:80fb:b122	128.251.177.34
b51a:901b:cb15:8045:ada8:cdcd:80fb:b123	128.251.177.35
b51a:901b:cb15:8045:ada8:cdcd:80fb:b124	128.251.177.36
b51a:901b:cb15:8045:ada8:cdcd:80fb:b125	128.251.177.37
b51a:901b:cb15:8045:ada8:cdcd:80fb:b126	128.251.177.38
b51a:901b:cb15:8045:ada8:cdcd:80fb:b127	128.251.177.39
b51a:901b:cb15:8045:ada8:cdcd:80fb:b128	128.251.177.40
b51a:901b:cb15:8045:ada8:cdcd:80fb:b129	128.251.177.41
b51a:901b:cb15:8045:ada8:cdcd:80fb:b12a	128.251.177.42
b51a:901b:cb15:8045:ada8:cdcd:80fb:b12b	128.251.177.43
b51a:901b:cb15:8045:ada8:cdcd:80fb:b12c	128.251.177.44
b51a:901b:cb15:8045:ada8:cdcd:80fb:b12d	128.251.177.45
b51a:901b:cb15:8045:ada8:cdcd:80fb:b12e	128.251.177.46
b51a:901b:cb15:8045:ada8:cdcd:80fb:b12f	128.251.177.47
b51a:901b:cb15:8045:ada8:cdcd:80fb:b130	128.251.177.48
b51a:901b:cb15:8045:ada8:cdcd:80fb:b131	128.251.177.49
b51a:901b:cb15:8045:ada8:cdcd:80fb:b132	128.251.177.50
b51a:901b:cb15:8045:ada8:cdcd:80fb:b133	128.251.177.51
b51a:901b:cb15:8045:ada8:cdcd:80fb:b134	128.251.177.52
b51a:901b:cb15:8045:ada8:cdcd:80fb:b135	128.251.177.53
b51a:901b:cb15:8045:ada8:cdcd:80fb:b136	128.251.177.54
b51a:901b:cb15:8045:ada8:cdcd:80fb:b137	128.251.177.55
b51a:901b:cb15:8045:ada8:cdcd:80fb:b138	128.251.177.56
b51a:901b:cb15:8045:ada8:cdcd:80fb:b139	128.251.177.57
b51a:901b:cb15:8045:ada8:cdcd:80fb:b13a	128.251.177.58
b51a:901b:cb15:8045:ada8:cdcd:80fb:b13b	128.251.177.59
b51a:901b:cb15:8045:ada8:cdcd:80fb:b13c	128.251.177.60

b51a:901b:cb15:8045:ada8:cdcd:80fb:b13d	128.251.177.61
b51a:901b:cb15:8045:ada8:cdcd:80fb:b13e	128.251.177.62
b51a:901b:cb15:8045:ada8:cdcd:80fb:b13f	128.251.177.63
b51a:901b:cb15:8045:ada8:cdcd:80fb:b140	128.251.177.64
b51a:901b:cb15:8045:ada8:cdcd:80fb:b141	128.251.177.65
b51a:901b:cb15:8045:ada8:cdcd:80fb:b142	128.251.177.66
b51a:901b:cb15:8045:ada8:cdcd:80fb:b143	128.251.177.67
b51a:901b:cb15:8045:ada8:cdcd:80fb:b144	128.251.177.68
b51a:901b:cb15:8045:ada8:cdcd:80fb:b145	128.251.177.69
b51a:901b:cb15:8045:ada8:cdcd:80fb:b146	128.251.177.70
b51a:901b:cb15:8045:ada8:cdcd:80fb:b147	128.251.177.71
b51a:901b:cb15:8045:ada8:cdcd:80fb:b148	128.251.177.72
b51a:901b:cb15:8045:ada8:cdcd:80fb:b149	128.251.177.73
b51a:901b:cb15:8045:ada8:cdcd:80fb:b14a	128.251.177.74
b51a:901b:cb15:8045:ada8:cdcd:80fb:b14b	128.251.177.75
b51a:901b:cb15:8045:ada8:cdcd:80fb:b14c	128.251.177.76
b51a:901b:cb15:8045:ada8:cdcd:80fb:b14d	128.251.177.77
b51a:901b:cb15:8045:ada8:cdcd:80fb:b14e	128.251.177.78
b51a:901b:cb15:8045:ada8:cdcd:80fb:b14f	128.251.177.79
b51a:901b:cb15:8045:ada8:cdcd:80fb:b150	128.251.177.80
b51a:901b:cb15:8045:ada8:cdcd:80fb:b151	128.251.177.81
b51a:901b:cb15:8045:ada8:cdcd:80fb:b152	128.251.177.82
b51a:901b:cb15:8045:ada8:cdcd:80fb:b153	128.251.177.83
b51a:901b:cb15:8045:ada8:cdcd:80fb:b154	128.251.177.84
b51a:901b:cb15:8045:ada8:cdcd:80fb:b155	128.251.177.85
b51a:901b:cb15:8045:ada8:cdcd:80fb:b156	128.251.177.86
b51a:901b:cb15:8045:ada8:cdcd:80fb:b157	128.251.177.87
b51a:901b:cb15:8045:ada8:cdcd:80fb:b158	128.251.177.88
b51a:901b:cb15:8045:ada8:cdcd:80fb:b159	128.251.177.89
b51a:901b:cb15:8045:ada8:cdcd:80fb:b15a	128.251.177.90
b51a:901b:cb15:8045:ada8:cdcd:80fb:b15b	128.251.177.91
b51a:901b:cb15:8045:ada8:cdcd:80fb:b15c	128.251.177.92
b51a:901b:cb15:8045:ada8:cdcd:80fb:b15d	128.251.177.93
b51a:901b:cb15:8045:ada8:cdcd:80fb:b15e	128.251.177.94
b51a:901b:cb15:8045:ada8:cdcd:80fb:b15f	128.251.177.95
b51a:901b:cb15:8045:ada8:cdcd:80fb:b160	128.251.177.96
b51a:901b:cb15:8045:ada8:cdcd:80fb:b161	128.251.177.97
b51a:901b:cb15:8045:ada8:cdcd:80fb:b162	128.251.177.98
b51a:901b:cb15:8045:ada8:cdcd:80fb:b163	128.251.177.99
b51a:901b:cb15:8045:ada8:cdcd:80fb:b164	128.251.177.100
b51a:901b:cb15:8045:ada8:cdcd:80fb:b165	128.251.177.101
b51a:901b:cb15:8045:ada8:cdcd:80fb:b166	128.251.177.102
b51a:901b:cb15:8045:ada8:cdcd:80fb:b167	128.251.177.103
b51a:901b:cb15:8045:ada8:cdcd:80fb:b168	128.251.177.104
b51a:901b:cb15:8045:ada8:cdcd:80fb:b169	128.251.177.105
b51a:901b:cb15:8045:ada8:cdcd:80fb:b16a	128.251.177.106
b51a:901b:cb15:8045:ada8:cdcd:80fb:b16b	128.251.177.107
b51a:901b:cb15:8045:ada8:cdcd:80fb:b16c	128.251.177.108
b51a:901b:cb15:8045:ada8:cdcd:80fb:b16d	128.251.177.109
b51a:901b:cb15:8045:ada8:cdcd:80fb:b16e	128.251.177.110
b51a:901b:cb15:8045:ada8:cdcd:80fb:b16f	128.251.177.111
b51a:901b:cb15:8045:ada8:cdcd:80fb:b170	128.251.177.112
b51a:901b:cb15:8045:ada8:cdcd:80fb:b171	128.251.177.113
b51a:901b:cb15:8045:ada8:cdcd:80fb:b172	128.251.177.114
b51a:901b:cb15:8045:ada8:cdcd:80fb:b173	128.251.177.115
b51a:901b:cb15:8045:ada8:cdcd:80fb:b174	128.251.177.116
b51a:901b:cb15:8045:ada8:cdcd:80fb:b175	128.251.177.117
b51a:901b:cb15:8045:ada8:cdcd:80fb:b176	128.251.177.118
b51a:901b:cb15:8045:ada8:cdcd:80fb:b177	128.251.177.119
b51a:901b:cb15:8045:ada8:cdcd:80fb:b178	128.251.177.120

b51a:901b:cb15:8045:ada8:cdcd:80fb:b179	128.251.177.121
b51a:901b:cb15:8045:ada8:cdcd:80fb:b17a	128.251.177.122
b51a:901b:cb15:8045:ada8:cdcd:80fb:b17b	128.251.177.123
b51a:901b:cb15:8045:ada8:cdcd:80fb:b17c	128.251.177.124
b51a:901b:cb15:8045:ada8:cdcd:80fb:b17d	128.251.177.125
b51a:901b:cb15:8045:ada8:cdcd:80fb:b17e	128.251.177.126
b51a:901b:cb15:8045:ada8:cdcd:80fb:b17f	128.251.177.127
b51a:901b:cb15:8045:ada8:cdcd:80fb:b180	128.251.177.128
b51a:901b:cb15:8045:ada8:cdcd:80fb:b181	128.251.177.129
b51a:901b:cb15:8045:ada8:cdcd:80fb:b182	128.251.177.130
b51a:901b:cb15:8045:ada8:cdcd:80fb:b183	128.251.177.131
b51a:901b:cb15:8045:ada8:cdcd:80fb:b184	128.251.177.132
b51a:901b:cb15:8045:ada8:cdcd:80fb:b185	128.251.177.133
b51a:901b:cb15:8045:ada8:cdcd:80fb:b186	128.251.177.134
b51a:901b:cb15:8045:ada8:cdcd:80fb:b187	128.251.177.135
b51a:901b:cb15:8045:ada8:cdcd:80fb:b188	128.251.177.136
b51a:901b:cb15:8045:ada8:cdcd:80fb:b189	128.251.177.137
b51a:901b:cb15:8045:ada8:cdcd:80fb:b18a	128.251.177.138
b51a:901b:cb15:8045:ada8:cdcd:80fb:b18b	128.251.177.139
b51a:901b:cb15:8045:ada8:cdcd:80fb:b18c	128.251.177.140
b51a:901b:cb15:8045:ada8:cdcd:80fb:b18d	128.251.177.141
b51a:901b:cb15:8045:ada8:cdcd:80fb:b18e	128.251.177.142
b51a:901b:cb15:8045:ada8:cdcd:80fb:b18f	128.251.177.143
b51a:901b:cb15:8045:ada8:cdcd:80fb:b190	128.251.177.144
b51a:901b:cb15:8045:ada8:cdcd:80fb:b191	128.251.177.145
b51a:901b:cb15:8045:ada8:cdcd:80fb:b192	128.251.177.146
b51a:901b:cb15:8045:ada8:cdcd:80fb:b193	128.251.177.147
b51a:901b:cb15:8045:ada8:cdcd:80fb:b194	128.251.177.148
b51a:901b:cb15:8045:ada8:cdcd:80fb:b195	128.251.177.149
b51a:901b:cb15:8045:ada8:cdcd:80fb:b196	128.251.177.150
b51a:901b:cb15:8045:ada8:cdcd:80fb:b197	128.251.177.151
b51a:901b:cb15:8045:ada8:cdcd:80fb:b198	128.251.177.152
b51a:901b:cb15:8045:ada8:cdcd:80fb:b199	128.251.177.153
b51a:901b:cb15:8045:ada8:cdcd:80fb:b19a	128.251.177.154
b51a:901b:cb15:8045:ada8:cdcd:80fb:b19b	128.251.177.155
b51a:901b:cb15:8045:ada8:cdcd:80fb:b19c	128.251.177.156
b51a:901b:cb15:8045:ada8:cdcd:80fb:b19d	128.251.177.157
b51a:901b:cb15:8045:ada8:cdcd:80fb:b19e	128.251.177.158
b51a:901b:cb15:8045:ada8:cdcd:80fb:b19f	128.251.177.159
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1a0	128.251.177.160
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1a1	128.251.177.161
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1a2	128.251.177.162
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1a3	128.251.177.163
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1a4	128.251.177.164
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1a5	128.251.177.165
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1a6	128.251.177.166
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1a7	128.251.177.167
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1a8	128.251.177.168
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1a9	128.251.177.169
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1aa	128.251.177.170
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1ab	128.251.177.171
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1ac	128.251.177.172
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1ad	128.251.177.173
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1ae	128.251.177.174
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1af	128.251.177.175
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1b0	128.251.177.176
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1b1	128.251.177.177
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1b2	128.251.177.178
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1b3	128.251.177.179
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1b4	128.251.177.180

b51a:901b:cb15:8045:ada8:cdcd:80fb:b1b5	128.251.177.181
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1b6	128.251.177.182
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1b7	128.251.177.183
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1b8	128.251.177.184
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1b9	128.251.177.185
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1ba	128.251.177.186
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1bb	128.251.177.187
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1bc	128.251.177.188
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1bd	128.251.177.189
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1be	128.251.177.190
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1bf	128.251.177.191
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1c0	128.251.177.192
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1c1	128.251.177.193
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1c2	128.251.177.194
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1c3	128.251.177.195
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1c4	128.251.177.196
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1c5	128.251.177.197
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1c6	128.251.177.198
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1c7	128.251.177.199
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1c8	128.251.177.200
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1c9	128.251.177.201
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1ca	128.251.177.202
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1cb	128.251.177.203
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1cc	128.251.177.204
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1cd	128.251.177.205
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1ce	128.251.177.206
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1cf	128.251.177.207
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1d0	128.251.177.208
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1d1	128.251.177.209
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1d2	128.251.177.210
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1d3	128.251.177.211
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1d4	128.251.177.212
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1d5	128.251.177.213
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1d6	128.251.177.214
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1d7	128.251.177.215
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1d8	128.251.177.216
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1d9	128.251.177.217
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1da	128.251.177.218
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1db	128.251.177.219
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1dc	128.251.177.220
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1dd	128.251.177.221
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1de	128.251.177.222
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1df	128.251.177.223
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1e0	128.251.177.224
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1e1	128.251.177.225
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1e2	128.251.177.226
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1e3	128.251.177.227
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1e4	128.251.177.228
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1e5	128.251.177.229
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1e6	128.251.177.230
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1e7	128.251.177.231
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1e8	128.251.177.232
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1e9	128.251.177.233
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1ea	128.251.177.234
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1eb	128.251.177.235
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1ec	128.251.177.236
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1ed	128.251.177.237
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1ee	128.251.177.238
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1ef	128.251.177.239
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1f0	128.251.177.240
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1f1	128.251.177.241
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1f2	128.251.177.242
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1f3	128.251.177.243
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1f4	128.251.177.244
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1f5	128.251.177.245
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1f6	128.251.177.246
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1f7	128.251.177.247
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1f8	128.251.177.248
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1f9	128.251.177.249
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1fa	128.251.177.250
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1fb	128.251.177.251
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1fc	128.251.177.252
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1fd	128.251.177.253
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1fe	128.251.177.254
b51a:901b:cb15:8045:ada8:cdcd:80fb:b1ff	128.251.177.255

How IPv6 host addresses we calculated?

As we explained above IPv6 IP version is 128 bit long. Our system get IPv6 IP address as input in URL parameter value with its CIDR & get its all host address ranges from our largest database get back its start range and last range with its relevant CIDR at the end final IPv6 which converts into IPv4 IP address by our tool IPv6 to IPv4 converter.