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:b801	128.251.184.1
b51a:901b:cb15:8045:ada8:cdcd:80fb:b802	128.251.184.2
b51a:901b:cb15:8045:ada8:cdcd:80fb:b803	128.251.184.3
b51a:901b:cb15:8045:ada8:cdcd:80fb:b804	128.251.184.4
b51a:901b:cb15:8045:ada8:cdcd:80fb:b805	128.251.184.5
b51a:901b:cb15:8045:ada8:cdcd:80fb:b806	128.251.184.6
b51a:901b:cb15:8045:ada8:cdcd:80fb:b807	128.251.184.7
b51a:901b:cb15:8045:ada8:cdcd:80fb:b808	128.251.184.8
b51a:901b:cb15:8045:ada8:cdcd:80fb:b809	128.251.184.9
b51a:901b:cb15:8045:ada8:cdcd:80fb:b80a	128.251.184.10
b51a:901b:cb15:8045:ada8:cdcd:80fb:b80b	128.251.184.11
b51a:901b:cb15:8045:ada8:cdcd:80fb:b80c	128.251.184.12
b51a:901b:cb15:8045:ada8:cdcd:80fb:b80d	128.251.184.13
b51a:901b:cb15:8045:ada8:cdcd:80fb:b80e	128.251.184.14
b51a:901b:cb15:8045:ada8:cdcd:80fb:b80f	128.251.184.15
b51a:901b:cb15:8045:ada8:cdcd:80fb:b810	128.251.184.16
b51a:901b:cb15:8045:ada8:cdcd:80fb:b811	128.251.184.17
b51a:901b:cb15:8045:ada8:cdcd:80fb:b812	128.251.184.18
b51a:901b:cb15:8045:ada8:cdcd:80fb:b813	128.251.184.19
b51a:901b:cb15:8045:ada8:cdcd:80fb:b814	128.251.184.20
b51a:901b:cb15:8045:ada8:cdcd:80fb:b815	128.251.184.21
b51a:901b:cb15:8045:ada8:cdcd:80fb:b816	128.251.184.22
b51a:901b:cb15:8045:ada8:cdcd:80fb:b817	128.251.184.23
b51a:901b:cb15:8045:ada8:cdcd:80fb:b818	128.251.184.24
b51a:901b:cb15:8045:ada8:cdcd:80fb:b819	128.251.184.25
b51a:901b:cb15:8045:ada8:cdcd:80fb:b81a	128.251.184.26
b51a:901b:cb15:8045:ada8:cdcd:80fb:b81b	128.251.184.27
b51a:901b:cb15:8045:ada8:cdcd:80fb:b81c	128.251.184.28
b51a:901b:cb15:8045:ada8:cdcd:80fb:b81d	128.251.184.29
b51a:901b:cb15:8045:ada8:cdcd:80fb:b81e	128.251.184.30
b51a:901b:cb15:8045:ada8:cdcd:80fb:b81f	128.251.184.31
b51a:901b:cb15:8045:ada8:cdcd:80fb:b820	128.251.184.32
b51a:901b:cb15:8045:ada8:cdcd:80fb:b821	128.251.184.33
b51a:901b:cb15:8045:ada8:cdcd:80fb:b822	128.251.184.34
b51a:901b:cb15:8045:ada8:cdcd:80fb:b823	128.251.184.35
b51a:901b:cb15:8045:ada8:cdcd:80fb:b824	128.251.184.36
b51a:901b:cb15:8045:ada8:cdcd:80fb:b825	128.251.184.37
b51a:901b:cb15:8045:ada8:cdcd:80fb:b826	128.251.184.38
b51a:901b:cb15:8045:ada8:cdcd:80fb:b827	128.251.184.39
b51a:901b:cb15:8045:ada8:cdcd:80fb:b828	128.251.184.40
b51a:901b:cb15:8045:ada8:cdcd:80fb:b829	128.251.184.41
b51a:901b:cb15:8045:ada8:cdcd:80fb:b82a	128.251.184.42
b51a:901b:cb15:8045:ada8:cdcd:80fb:b82b	128.251.184.43
b51a:901b:cb15:8045:ada8:cdcd:80fb:b82c	128.251.184.44
b51a:901b:cb15:8045:ada8:cdcd:80fb:b82d	128.251.184.45
b51a:901b:cb15:8045:ada8:cdcd:80fb:b82e	128.251.184.46
b51a:901b:cb15:8045:ada8:cdcd:80fb:b82f	128.251.184.47
b51a:901b:cb15:8045:ada8:cdcd:80fb:b830	128.251.184.48
b51a:901b:cb15:8045:ada8:cdcd:80fb:b831	128.251.184.49
b51a:901b:cb15:8045:ada8:cdcd:80fb:b832	128.251.184.50
b51a:901b:cb15:8045:ada8:cdcd:80fb:b833	128.251.184.51
b51a:901b:cb15:8045:ada8:cdcd:80fb:b834	128.251.184.52
b51a:901b:cb15:8045:ada8:cdcd:80fb:b835	128.251.184.53
b51a:901b:cb15:8045:ada8:cdcd:80fb:b836	128.251.184.54
b51a:901b:cb15:8045:ada8:cdcd:80fb:b837	128.251.184.55
b51a:901b:cb15:8045:ada8:cdcd:80fb:b838	128.251.184.56
b51a:901b:cb15:8045:ada8:cdcd:80fb:b839	128.251.184.57
b51a:901b:cb15:8045:ada8:cdcd:80fb:b83a	128.251.184.58
b51a:901b:cb15:8045:ada8:cdcd:80fb:b83b	128.251.184.59
b51a:901b:cb15:8045:ada8:cdcd:80fb:b83c	128.251.184.60

b51a:901b:cb15:8045:ada8:cdcd:80fb:b83d	128.251.184.61
b51a:901b:cb15:8045:ada8:cdcd:80fb:b83e	128.251.184.62
b51a:901b:cb15:8045:ada8:cdcd:80fb:b83f	128.251.184.63
b51a:901b:cb15:8045:ada8:cdcd:80fb:b840	128.251.184.64
b51a:901b:cb15:8045:ada8:cdcd:80fb:b841	128.251.184.65
b51a:901b:cb15:8045:ada8:cdcd:80fb:b842	128.251.184.66
b51a:901b:cb15:8045:ada8:cdcd:80fb:b843	128.251.184.67
b51a:901b:cb15:8045:ada8:cdcd:80fb:b844	128.251.184.68
b51a:901b:cb15:8045:ada8:cdcd:80fb:b845	128.251.184.69
b51a:901b:cb15:8045:ada8:cdcd:80fb:b846	128.251.184.70
b51a:901b:cb15:8045:ada8:cdcd:80fb:b847	128.251.184.71
b51a:901b:cb15:8045:ada8:cdcd:80fb:b848	128.251.184.72
b51a:901b:cb15:8045:ada8:cdcd:80fb:b849	128.251.184.73
b51a:901b:cb15:8045:ada8:cdcd:80fb:b84a	128.251.184.74
b51a:901b:cb15:8045:ada8:cdcd:80fb:b84b	128.251.184.75
b51a:901b:cb15:8045:ada8:cdcd:80fb:b84c	128.251.184.76
b51a:901b:cb15:8045:ada8:cdcd:80fb:b84d	128.251.184.77
b51a:901b:cb15:8045:ada8:cdcd:80fb:b84e	128.251.184.78
b51a:901b:cb15:8045:ada8:cdcd:80fb:b84f	128.251.184.79
b51a:901b:cb15:8045:ada8:cdcd:80fb:b850	128.251.184.80
b51a:901b:cb15:8045:ada8:cdcd:80fb:b851	128.251.184.81
b51a:901b:cb15:8045:ada8:cdcd:80fb:b852	128.251.184.82
b51a:901b:cb15:8045:ada8:cdcd:80fb:b853	128.251.184.83
b51a:901b:cb15:8045:ada8:cdcd:80fb:b854	128.251.184.84
b51a:901b:cb15:8045:ada8:cdcd:80fb:b855	128.251.184.85
b51a:901b:cb15:8045:ada8:cdcd:80fb:b856	128.251.184.86
b51a:901b:cb15:8045:ada8:cdcd:80fb:b857	128.251.184.87
b51a:901b:cb15:8045:ada8:cdcd:80fb:b858	128.251.184.88
b51a:901b:cb15:8045:ada8:cdcd:80fb:b859	128.251.184.89
b51a:901b:cb15:8045:ada8:cdcd:80fb:b85a	128.251.184.90
b51a:901b:cb15:8045:ada8:cdcd:80fb:b85b	128.251.184.91
b51a:901b:cb15:8045:ada8:cdcd:80fb:b85c	128.251.184.92
b51a:901b:cb15:8045:ada8:cdcd:80fb:b85d	128.251.184.93
b51a:901b:cb15:8045:ada8:cdcd:80fb:b85e	128.251.184.94
b51a:901b:cb15:8045:ada8:cdcd:80fb:b85f	128.251.184.95
b51a:901b:cb15:8045:ada8:cdcd:80fb:b860	128.251.184.96
b51a:901b:cb15:8045:ada8:cdcd:80fb:b861	128.251.184.97
b51a:901b:cb15:8045:ada8:cdcd:80fb:b862	128.251.184.98
b51a:901b:cb15:8045:ada8:cdcd:80fb:b863	128.251.184.99
b51a:901b:cb15:8045:ada8:cdcd:80fb:b864	128.251.184.100
b51a:901b:cb15:8045:ada8:cdcd:80fb:b865	128.251.184.101
b51a:901b:cb15:8045:ada8:cdcd:80fb:b866	128.251.184.102
b51a:901b:cb15:8045:ada8:cdcd:80fb:b867	128.251.184.103
b51a:901b:cb15:8045:ada8:cdcd:80fb:b868	128.251.184.104
b51a:901b:cb15:8045:ada8:cdcd:80fb:b869	128.251.184.105
b51a:901b:cb15:8045:ada8:cdcd:80fb:b86a	128.251.184.106
b51a:901b:cb15:8045:ada8:cdcd:80fb:b86b	128.251.184.107
b51a:901b:cb15:8045:ada8:cdcd:80fb:b86c	128.251.184.108
b51a:901b:cb15:8045:ada8:cdcd:80fb:b86d	128.251.184.109
b51a:901b:cb15:8045:ada8:cdcd:80fb:b86e	128.251.184.110
b51a:901b:cb15:8045:ada8:cdcd:80fb:b86f	128.251.184.111
b51a:901b:cb15:8045:ada8:cdcd:80fb:b870	128.251.184.112
b51a:901b:cb15:8045:ada8:cdcd:80fb:b871	128.251.184.113
b51a:901b:cb15:8045:ada8:cdcd:80fb:b872	128.251.184.114
b51a:901b:cb15:8045:ada8:cdcd:80fb:b873	128.251.184.115
b51a:901b:cb15:8045:ada8:cdcd:80fb:b874	128.251.184.116
b51a:901b:cb15:8045:ada8:cdcd:80fb:b875	128.251.184.117
b51a:901b:cb15:8045:ada8:cdcd:80fb:b876	128.251.184.118
b51a:901b:cb15:8045:ada8:cdcd:80fb:b877	128.251.184.119
b51a:901b:cb15:8045:ada8:cdcd:80fb:b878	128.251.184.120

b51a:901b:cb15:8045:ada8:cdcd:80fb:b879	128.251.184.121
b51a:901b:cb15:8045:ada8:cdcd:80fb:b87a	128.251.184.122
b51a:901b:cb15:8045:ada8:cdcd:80fb:b87b	128.251.184.123
b51a:901b:cb15:8045:ada8:cdcd:80fb:b87c	128.251.184.124
b51a:901b:cb15:8045:ada8:cdcd:80fb:b87d	128.251.184.125
b51a:901b:cb15:8045:ada8:cdcd:80fb:b87e	128.251.184.126
b51a:901b:cb15:8045:ada8:cdcd:80fb:b87f	128.251.184.127
b51a:901b:cb15:8045:ada8:cdcd:80fb:b880	128.251.184.128
b51a:901b:cb15:8045:ada8:cdcd:80fb:b881	128.251.184.129
b51a:901b:cb15:8045:ada8:cdcd:80fb:b882	128.251.184.130
b51a:901b:cb15:8045:ada8:cdcd:80fb:b883	128.251.184.131
b51a:901b:cb15:8045:ada8:cdcd:80fb:b884	128.251.184.132
b51a:901b:cb15:8045:ada8:cdcd:80fb:b885	128.251.184.133
b51a:901b:cb15:8045:ada8:cdcd:80fb:b886	128.251.184.134
b51a:901b:cb15:8045:ada8:cdcd:80fb:b887	128.251.184.135
b51a:901b:cb15:8045:ada8:cdcd:80fb:b888	128.251.184.136
b51a:901b:cb15:8045:ada8:cdcd:80fb:b889	128.251.184.137
b51a:901b:cb15:8045:ada8:cdcd:80fb:b88a	128.251.184.138
b51a:901b:cb15:8045:ada8:cdcd:80fb:b88b	128.251.184.139
b51a:901b:cb15:8045:ada8:cdcd:80fb:b88c	128.251.184.140
b51a:901b:cb15:8045:ada8:cdcd:80fb:b88d	128.251.184.141
b51a:901b:cb15:8045:ada8:cdcd:80fb:b88e	128.251.184.142
b51a:901b:cb15:8045:ada8:cdcd:80fb:b88f	128.251.184.143
b51a:901b:cb15:8045:ada8:cdcd:80fb:b890	128.251.184.144
b51a:901b:cb15:8045:ada8:cdcd:80fb:b891	128.251.184.145
b51a:901b:cb15:8045:ada8:cdcd:80fb:b892	128.251.184.146
b51a:901b:cb15:8045:ada8:cdcd:80fb:b893	128.251.184.147
b51a:901b:cb15:8045:ada8:cdcd:80fb:b894	128.251.184.148
b51a:901b:cb15:8045:ada8:cdcd:80fb:b895	128.251.184.149
b51a:901b:cb15:8045:ada8:cdcd:80fb:b896	128.251.184.150
b51a:901b:cb15:8045:ada8:cdcd:80fb:b897	128.251.184.151
b51a:901b:cb15:8045:ada8:cdcd:80fb:b898	128.251.184.152
b51a:901b:cb15:8045:ada8:cdcd:80fb:b899	128.251.184.153
b51a:901b:cb15:8045:ada8:cdcd:80fb:b89a	128.251.184.154
b51a:901b:cb15:8045:ada8:cdcd:80fb:b89b	128.251.184.155
b51a:901b:cb15:8045:ada8:cdcd:80fb:b89c	128.251.184.156
b51a:901b:cb15:8045:ada8:cdcd:80fb:b89d	128.251.184.157
b51a:901b:cb15:8045:ada8:cdcd:80fb:b89e	128.251.184.158
b51a:901b:cb15:8045:ada8:cdcd:80fb:b89f	128.251.184.159
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8a0	128.251.184.160
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8a1	128.251.184.161
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8a2	128.251.184.162
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8a3	128.251.184.163
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8a4	128.251.184.164
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8a5	128.251.184.165
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8a6	128.251.184.166
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8a7	128.251.184.167
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8a8	128.251.184.168
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8a9	128.251.184.169
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8aa	128.251.184.170
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8ab	128.251.184.171
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8ac	128.251.184.172
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8ad	128.251.184.173
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8ae	128.251.184.174
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8af	128.251.184.175
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8b0	128.251.184.176
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8b1	128.251.184.177
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8b2	128.251.184.178
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8b3	128.251.184.179
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8b4	128.251.184.180

b51a:901b:cb15:8045:ada8:cdcd:80fb:b8b5	128.251.184.181
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8b6	128.251.184.182
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8b7	128.251.184.183
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8b8	128.251.184.184
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8b9	128.251.184.185
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8ba	128.251.184.186
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8bb	128.251.184.187
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8bc	128.251.184.188
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8bd	128.251.184.189
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8be	128.251.184.190
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8bf	128.251.184.191
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8c0	128.251.184.192
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8c1	128.251.184.193
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8c2	128.251.184.194
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8c3	128.251.184.195
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8c4	128.251.184.196
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8c5	128.251.184.197
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8c6	128.251.184.198
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8c7	128.251.184.199
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8c8	128.251.184.200
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8c9	128.251.184.201
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8ca	128.251.184.202
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8cb	128.251.184.203
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8cc	128.251.184.204
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8cd	128.251.184.205
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8ce	128.251.184.206
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8cf	128.251.184.207
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8d0	128.251.184.208
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8d1	128.251.184.209
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8d2	128.251.184.210
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8d3	128.251.184.211
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8d4	128.251.184.212
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8d5	128.251.184.213
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8d6	128.251.184.214
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8d7	128.251.184.215
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8d8	128.251.184.216
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8d9	128.251.184.217
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8da	128.251.184.218
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8db	128.251.184.219
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8dc	128.251.184.220
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8dd	128.251.184.221
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8de	128.251.184.222
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8df	128.251.184.223
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8e0	128.251.184.224
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8e1	128.251.184.225
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8e2	128.251.184.226
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8e3	128.251.184.227
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8e4	128.251.184.228
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8e5	128.251.184.229
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8e6	128.251.184.230
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8e7	128.251.184.231
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8e8	128.251.184.232
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8e9	128.251.184.233
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8ea	128.251.184.234
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8eb	128.251.184.235
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8ec	128.251.184.236
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8ed	128.251.184.237
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8ee	128.251.184.238
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8ef	128.251.184.239
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8f0	128.251.184.240
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8f1	128.251.184.241
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8f2	128.251.184.242
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8f3	128.251.184.243
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8f4	128.251.184.244
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8f5	128.251.184.245
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8f6	128.251.184.246
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8f7	128.251.184.247
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8f8	128.251.184.248
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8f9	128.251.184.249
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8fa	128.251.184.250
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8fb	128.251.184.251
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8fc	128.251.184.252
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8fd	128.251.184.253
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8fe	128.251.184.254
b51a:901b:cb15:8045:ada8:cdcd:80fb:b8ff	128.251.184.255

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.