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:d801	128.251.216.1
b51a:901b:cb15:8045:ada8:cdcd:80fb:d802	128.251.216.2
b51a:901b:cb15:8045:ada8:cdcd:80fb:d803	128.251.216.3
b51a:901b:cb15:8045:ada8:cdcd:80fb:d804	128.251.216.4
b51a:901b:cb15:8045:ada8:cdcd:80fb:d805	128.251.216.5
b51a:901b:cb15:8045:ada8:cdcd:80fb:d806	128.251.216.6
b51a:901b:cb15:8045:ada8:cdcd:80fb:d807	128.251.216.7
b51a:901b:cb15:8045:ada8:cdcd:80fb:d808	128.251.216.8
b51a:901b:cb15:8045:ada8:cdcd:80fb:d809	128.251.216.9
b51a:901b:cb15:8045:ada8:cdcd:80fb:d80a	128.251.216.10
b51a:901b:cb15:8045:ada8:cdcd:80fb:d80b	128.251.216.11
b51a:901b:cb15:8045:ada8:cdcd:80fb:d80c	128.251.216.12
b51a:901b:cb15:8045:ada8:cdcd:80fb:d80d	128.251.216.13
b51a:901b:cb15:8045:ada8:cdcd:80fb:d80e	128.251.216.14
b51a:901b:cb15:8045:ada8:cdcd:80fb:d80f	128.251.216.15
b51a:901b:cb15:8045:ada8:cdcd:80fb:d810	128.251.216.16
b51a:901b:cb15:8045:ada8:cdcd:80fb:d811	128.251.216.17
b51a:901b:cb15:8045:ada8:cdcd:80fb:d812	128.251.216.18
b51a:901b:cb15:8045:ada8:cdcd:80fb:d813	128.251.216.19
b51a:901b:cb15:8045:ada8:cdcd:80fb:d814	128.251.216.20
b51a:901b:cb15:8045:ada8:cdcd:80fb:d815	128.251.216.21
b51a:901b:cb15:8045:ada8:cdcd:80fb:d816	128.251.216.22
b51a:901b:cb15:8045:ada8:cdcd:80fb:d817	128.251.216.23
b51a:901b:cb15:8045:ada8:cdcd:80fb:d818	128.251.216.24
b51a:901b:cb15:8045:ada8:cdcd:80fb:d819	128.251.216.25
b51a:901b:cb15:8045:ada8:cdcd:80fb:d81a	128.251.216.26
b51a:901b:cb15:8045:ada8:cdcd:80fb:d81b	128.251.216.27
b51a:901b:cb15:8045:ada8:cdcd:80fb:d81c	128.251.216.28
b51a:901b:cb15:8045:ada8:cdcd:80fb:d81d	128.251.216.29
b51a:901b:cb15:8045:ada8:cdcd:80fb:d81e	128.251.216.30
b51a:901b:cb15:8045:ada8:cdcd:80fb:d81f	128.251.216.31
b51a:901b:cb15:8045:ada8:cdcd:80fb:d820	128.251.216.32
b51a:901b:cb15:8045:ada8:cdcd:80fb:d821	128.251.216.33
b51a:901b:cb15:8045:ada8:cdcd:80fb:d822	128.251.216.34
b51a:901b:cb15:8045:ada8:cdcd:80fb:d823	128.251.216.35
b51a:901b:cb15:8045:ada8:cdcd:80fb:d824	128.251.216.36
b51a:901b:cb15:8045:ada8:cdcd:80fb:d825	128.251.216.37
b51a:901b:cb15:8045:ada8:cdcd:80fb:d826	128.251.216.38
b51a:901b:cb15:8045:ada8:cdcd:80fb:d827	128.251.216.39
b51a:901b:cb15:8045:ada8:cdcd:80fb:d828	128.251.216.40
b51a:901b:cb15:8045:ada8:cdcd:80fb:d829	128.251.216.41
b51a:901b:cb15:8045:ada8:cdcd:80fb:d82a	128.251.216.42
b51a:901b:cb15:8045:ada8:cdcd:80fb:d82b	128.251.216.43
b51a:901b:cb15:8045:ada8:cdcd:80fb:d82c	128.251.216.44
b51a:901b:cb15:8045:ada8:cdcd:80fb:d82d	128.251.216.45
b51a:901b:cb15:8045:ada8:cdcd:80fb:d82e	128.251.216.46
b51a:901b:cb15:8045:ada8:cdcd:80fb:d82f	128.251.216.47
b51a:901b:cb15:8045:ada8:cdcd:80fb:d830	128.251.216.48
b51a:901b:cb15:8045:ada8:cdcd:80fb:d831	128.251.216.49
b51a:901b:cb15:8045:ada8:cdcd:80fb:d832	128.251.216.50
b51a:901b:cb15:8045:ada8:cdcd:80fb:d833	128.251.216.51
b51a:901b:cb15:8045:ada8:cdcd:80fb:d834	128.251.216.52
b51a:901b:cb15:8045:ada8:cdcd:80fb:d835	128.251.216.53
b51a:901b:cb15:8045:ada8:cdcd:80fb:d836	128.251.216.54
b51a:901b:cb15:8045:ada8:cdcd:80fb:d837	128.251.216.55
b51a:901b:cb15:8045:ada8:cdcd:80fb:d838	128.251.216.56
b51a:901b:cb15:8045:ada8:cdcd:80fb:d839	128.251.216.57
b51a:901b:cb15:8045:ada8:cdcd:80fb:d83a	128.251.216.58
b51a:901b:cb15:8045:ada8:cdcd:80fb:d83b	128.251.216.59
b51a:901b:cb15:8045:ada8:cdcd:80fb:d83c	128.251.216.60

b51a:901b:cb15:8045:ada8:cdcd:80fb:d83d	128.251.216.61
b51a:901b:cb15:8045:ada8:cdcd:80fb:d83e	128.251.216.62
b51a:901b:cb15:8045:ada8:cdcd:80fb:d83f	128.251.216.63
b51a:901b:cb15:8045:ada8:cdcd:80fb:d840	128.251.216.64
b51a:901b:cb15:8045:ada8:cdcd:80fb:d841	128.251.216.65
b51a:901b:cb15:8045:ada8:cdcd:80fb:d842	128.251.216.66
b51a:901b:cb15:8045:ada8:cdcd:80fb:d843	128.251.216.67
b51a:901b:cb15:8045:ada8:cdcd:80fb:d844	128.251.216.68
b51a:901b:cb15:8045:ada8:cdcd:80fb:d845	128.251.216.69
b51a:901b:cb15:8045:ada8:cdcd:80fb:d846	128.251.216.70
b51a:901b:cb15:8045:ada8:cdcd:80fb:d847	128.251.216.71
b51a:901b:cb15:8045:ada8:cdcd:80fb:d848	128.251.216.72
b51a:901b:cb15:8045:ada8:cdcd:80fb:d849	128.251.216.73
b51a:901b:cb15:8045:ada8:cdcd:80fb:d84a	128.251.216.74
b51a:901b:cb15:8045:ada8:cdcd:80fb:d84b	128.251.216.75
b51a:901b:cb15:8045:ada8:cdcd:80fb:d84c	128.251.216.76
b51a:901b:cb15:8045:ada8:cdcd:80fb:d84d	128.251.216.77
b51a:901b:cb15:8045:ada8:cdcd:80fb:d84e	128.251.216.78
b51a:901b:cb15:8045:ada8:cdcd:80fb:d84f	128.251.216.79
b51a:901b:cb15:8045:ada8:cdcd:80fb:d850	128.251.216.80
b51a:901b:cb15:8045:ada8:cdcd:80fb:d851	128.251.216.81
b51a:901b:cb15:8045:ada8:cdcd:80fb:d852	128.251.216.82
b51a:901b:cb15:8045:ada8:cdcd:80fb:d853	128.251.216.83
b51a:901b:cb15:8045:ada8:cdcd:80fb:d854	128.251.216.84
b51a:901b:cb15:8045:ada8:cdcd:80fb:d855	128.251.216.85
b51a:901b:cb15:8045:ada8:cdcd:80fb:d856	128.251.216.86
b51a:901b:cb15:8045:ada8:cdcd:80fb:d857	128.251.216.87
b51a:901b:cb15:8045:ada8:cdcd:80fb:d858	128.251.216.88
b51a:901b:cb15:8045:ada8:cdcd:80fb:d859	128.251.216.89
b51a:901b:cb15:8045:ada8:cdcd:80fb:d85a	128.251.216.90
b51a:901b:cb15:8045:ada8:cdcd:80fb:d85b	128.251.216.91
b51a:901b:cb15:8045:ada8:cdcd:80fb:d85c	128.251.216.92
b51a:901b:cb15:8045:ada8:cdcd:80fb:d85d	128.251.216.93
b51a:901b:cb15:8045:ada8:cdcd:80fb:d85e	128.251.216.94
b51a:901b:cb15:8045:ada8:cdcd:80fb:d85f	128.251.216.95
b51a:901b:cb15:8045:ada8:cdcd:80fb:d860	128.251.216.96
b51a:901b:cb15:8045:ada8:cdcd:80fb:d861	128.251.216.97
b51a:901b:cb15:8045:ada8:cdcd:80fb:d862	128.251.216.98
b51a:901b:cb15:8045:ada8:cdcd:80fb:d863	128.251.216.99
b51a:901b:cb15:8045:ada8:cdcd:80fb:d864	128.251.216.100
b51a:901b:cb15:8045:ada8:cdcd:80fb:d865	128.251.216.101
b51a:901b:cb15:8045:ada8:cdcd:80fb:d866	128.251.216.102
b51a:901b:cb15:8045:ada8:cdcd:80fb:d867	128.251.216.103
b51a:901b:cb15:8045:ada8:cdcd:80fb:d868	128.251.216.104
b51a:901b:cb15:8045:ada8:cdcd:80fb:d869	128.251.216.105
b51a:901b:cb15:8045:ada8:cdcd:80fb:d86a	128.251.216.106
b51a:901b:cb15:8045:ada8:cdcd:80fb:d86b	128.251.216.107
b51a:901b:cb15:8045:ada8:cdcd:80fb:d86c	128.251.216.108
b51a:901b:cb15:8045:ada8:cdcd:80fb:d86d	128.251.216.109
b51a:901b:cb15:8045:ada8:cdcd:80fb:d86e	128.251.216.110
b51a:901b:cb15:8045:ada8:cdcd:80fb:d86f	128.251.216.111
b51a:901b:cb15:8045:ada8:cdcd:80fb:d870	128.251.216.112
b51a:901b:cb15:8045:ada8:cdcd:80fb:d871	128.251.216.113
b51a:901b:cb15:8045:ada8:cdcd:80fb:d872	128.251.216.114
b51a:901b:cb15:8045:ada8:cdcd:80fb:d873	128.251.216.115
b51a:901b:cb15:8045:ada8:cdcd:80fb:d874	128.251.216.116
b51a:901b:cb15:8045:ada8:cdcd:80fb:d875	128.251.216.117
b51a:901b:cb15:8045:ada8:cdcd:80fb:d876	128.251.216.118
b51a:901b:cb15:8045:ada8:cdcd:80fb:d877	128.251.216.119
b51a:901b:cb15:8045:ada8:cdcd:80fb:d878	128.251.216.120

b51a:901b:cb15:8045:ada8:cdcd:80fb:d879	128.251.216.121
b51a:901b:cb15:8045:ada8:cdcd:80fb:d87a	128.251.216.122
b51a:901b:cb15:8045:ada8:cdcd:80fb:d87b	128.251.216.123
b51a:901b:cb15:8045:ada8:cdcd:80fb:d87c	128.251.216.124
b51a:901b:cb15:8045:ada8:cdcd:80fb:d87d	128.251.216.125
b51a:901b:cb15:8045:ada8:cdcd:80fb:d87e	128.251.216.126
b51a:901b:cb15:8045:ada8:cdcd:80fb:d87f	128.251.216.127
b51a:901b:cb15:8045:ada8:cdcd:80fb:d880	128.251.216.128
b51a:901b:cb15:8045:ada8:cdcd:80fb:d881	128.251.216.129
b51a:901b:cb15:8045:ada8:cdcd:80fb:d882	128.251.216.130
b51a:901b:cb15:8045:ada8:cdcd:80fb:d883	128.251.216.131
b51a:901b:cb15:8045:ada8:cdcd:80fb:d884	128.251.216.132
b51a:901b:cb15:8045:ada8:cdcd:80fb:d885	128.251.216.133
b51a:901b:cb15:8045:ada8:cdcd:80fb:d886	128.251.216.134
b51a:901b:cb15:8045:ada8:cdcd:80fb:d887	128.251.216.135
b51a:901b:cb15:8045:ada8:cdcd:80fb:d888	128.251.216.136
b51a:901b:cb15:8045:ada8:cdcd:80fb:d889	128.251.216.137
b51a:901b:cb15:8045:ada8:cdcd:80fb:d88a	128.251.216.138
b51a:901b:cb15:8045:ada8:cdcd:80fb:d88b	128.251.216.139
b51a:901b:cb15:8045:ada8:cdcd:80fb:d88c	128.251.216.140
b51a:901b:cb15:8045:ada8:cdcd:80fb:d88d	128.251.216.141
b51a:901b:cb15:8045:ada8:cdcd:80fb:d88e	128.251.216.142
b51a:901b:cb15:8045:ada8:cdcd:80fb:d88f	128.251.216.143
b51a:901b:cb15:8045:ada8:cdcd:80fb:d890	128.251.216.144
b51a:901b:cb15:8045:ada8:cdcd:80fb:d891	128.251.216.145
b51a:901b:cb15:8045:ada8:cdcd:80fb:d892	128.251.216.146
b51a:901b:cb15:8045:ada8:cdcd:80fb:d893	128.251.216.147
b51a:901b:cb15:8045:ada8:cdcd:80fb:d894	128.251.216.148
b51a:901b:cb15:8045:ada8:cdcd:80fb:d895	128.251.216.149
b51a:901b:cb15:8045:ada8:cdcd:80fb:d896	128.251.216.150
b51a:901b:cb15:8045:ada8:cdcd:80fb:d897	128.251.216.151
b51a:901b:cb15:8045:ada8:cdcd:80fb:d898	128.251.216.152
b51a:901b:cb15:8045:ada8:cdcd:80fb:d899	128.251.216.153
b51a:901b:cb15:8045:ada8:cdcd:80fb:d89a	128.251.216.154
b51a:901b:cb15:8045:ada8:cdcd:80fb:d89b	128.251.216.155
b51a:901b:cb15:8045:ada8:cdcd:80fb:d89c	128.251.216.156
b51a:901b:cb15:8045:ada8:cdcd:80fb:d89d	128.251.216.157
b51a:901b:cb15:8045:ada8:cdcd:80fb:d89e	128.251.216.158
b51a:901b:cb15:8045:ada8:cdcd:80fb:d89f	128.251.216.159
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8a0	128.251.216.160
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8a1	128.251.216.161
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8a2	128.251.216.162
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8a3	128.251.216.163
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8a4	128.251.216.164
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8a5	128.251.216.165
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8a6	128.251.216.166
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8a7	128.251.216.167
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8a8	128.251.216.168
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8a9	128.251.216.169
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8aa	128.251.216.170
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8ab	128.251.216.171
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8ac	128.251.216.172
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8ad	128.251.216.173
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8ae	128.251.216.174
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8af	128.251.216.175
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8b0	128.251.216.176
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8b1	128.251.216.177
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8b2	128.251.216.178
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8b3	128.251.216.179
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8b4	128.251.216.180

b51a:901b:cb15:8045:ada8:cdcd:80fb:d8b5	128.251.216.181
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8b6	128.251.216.182
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8b7	128.251.216.183
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8b8	128.251.216.184
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8b9	128.251.216.185
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8ba	128.251.216.186
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8bb	128.251.216.187
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8bc	128.251.216.188
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8bd	128.251.216.189
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8be	128.251.216.190
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8bf	128.251.216.191
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8c0	128.251.216.192
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8c1	128.251.216.193
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8c2	128.251.216.194
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8c3	128.251.216.195
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8c4	128.251.216.196
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8c5	128.251.216.197
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8c6	128.251.216.198
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8c7	128.251.216.199
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8c8	128.251.216.200
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8c9	128.251.216.201
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8ca	128.251.216.202
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8cb	128.251.216.203
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8cc	128.251.216.204
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8cd	128.251.216.205
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8ce	128.251.216.206
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8cf	128.251.216.207
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8d0	128.251.216.208
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8d1	128.251.216.209
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8d2	128.251.216.210
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8d3	128.251.216.211
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8d4	128.251.216.212
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8d5	128.251.216.213
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8d6	128.251.216.214
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8d7	128.251.216.215
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8d8	128.251.216.216
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8d9	128.251.216.217
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8da	128.251.216.218
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8db	128.251.216.219
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8dc	128.251.216.220
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8dd	128.251.216.221
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8de	128.251.216.222
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8df	128.251.216.223
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8e0	128.251.216.224
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8e1	128.251.216.225
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8e2	128.251.216.226
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8e3	128.251.216.227
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8e4	128.251.216.228
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8e5	128.251.216.229
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8e6	128.251.216.230
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8e7	128.251.216.231
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8e8	128.251.216.232
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8e9	128.251.216.233
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8ea	128.251.216.234
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8eb	128.251.216.235
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8ec	128.251.216.236
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8ed	128.251.216.237
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8ee	128.251.216.238
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8ef	128.251.216.239
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8f0	128.251.216.240
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8f1	128.251.216.241
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8f2	128.251.216.242
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8f3	128.251.216.243
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8f4	128.251.216.244
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8f5	128.251.216.245
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8f6	128.251.216.246
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8f7	128.251.216.247
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8f8	128.251.216.248
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8f9	128.251.216.249
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8fa	128.251.216.250
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8fb	128.251.216.251
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8fc	128.251.216.252
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8fd	128.251.216.253
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8fe	128.251.216.254
b51a:901b:cb15:8045:ada8:cdcd:80fb:d8ff	128.251.216.255

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.