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
cb15:901b:8024:cd24:8081:155:5b51:1501	91.81.21.1
cb15:901b:8024:cd24:8081:155:5b51:1502	91.81.21.2
cb15:901b:8024:cd24:8081:155:5b51:1503	91.81.21.3
cb15:901b:8024:cd24:8081:155:5b51:1504	91.81.21.4
cb15:901b:8024:cd24:8081:155:5b51:1505	91.81.21.5
cb15:901b:8024:cd24:8081:155:5b51:1506	91.81.21.6
cb15:901b:8024:cd24:8081:155:5b51:1507	91.81.21.7
cb15:901b:8024:cd24:8081:155:5b51:1508	91.81.21.8
cb15:901b:8024:cd24:8081:155:5b51:1509	91.81.21.9
cb15:901b:8024:cd24:8081:155:5b51:150a	91.81.21.10
cb15:901b:8024:cd24:8081:155:5b51:150b	91.81.21.11
cb15:901b:8024:cd24:8081:155:5b51:150c	91.81.21.12
cb15:901b:8024:cd24:8081:155:5b51:150d	91.81.21.13
cb15:901b:8024:cd24:8081:155:5b51:150e	91.81.21.14
cb15:901b:8024:cd24:8081:155:5b51:150f	91.81.21.15
cb15:901b:8024:cd24:8081:155:5b51:1510	91.81.21.16
cb15:901b:8024:cd24:8081:155:5b51:1511	91.81.21.17
cb15:901b:8024:cd24:8081:155:5b51:1512	91.81.21.18
cb15:901b:8024:cd24:8081:155:5b51:1513	91.81.21.19
cb15:901b:8024:cd24:8081:155:5b51:1514	91.81.21.20
cb15:901b:8024:cd24:8081:155:5b51:1515	91.81.21.21
cb15:901b:8024:cd24:8081:155:5b51:1516	91.81.21.22
cb15:901b:8024:cd24:8081:155:5b51:1517	91.81.21.23
cb15:901b:8024:cd24:8081:155:5b51:1518	91.81.21.24
cb15:901b:8024:cd24:8081:155:5b51:1519	91.81.21.25
cb15:901b:8024:cd24:8081:155:5b51:151a	91.81.21.26
cb15:901b:8024:cd24:8081:155:5b51:151b	91.81.21.27
cb15:901b:8024:cd24:8081:155:5b51:151c	91.81.21.28
cb15:901b:8024:cd24:8081:155:5b51:151d	91.81.21.29
cb15:901b:8024:cd24:8081:155:5b51:151e	91.81.21.30
cb15:901b:8024:cd24:8081:155:5b51:151f	91.81.21.31
cb15:901b:8024:cd24:8081:155:5b51:1520	91.81.21.32
cb15:901b:8024:cd24:8081:155:5b51:1521	91.81.21.33
cb15:901b:8024:cd24:8081:155:5b51:1522	91.81.21.34
cb15:901b:8024:cd24:8081:155:5b51:1523	91.81.21.35
cb15:901b:8024:cd24:8081:155:5b51:1524	91.81.21.36
cb15:901b:8024:cd24:8081:155:5b51:1525	91.81.21.37
cb15:901b:8024:cd24:8081:155:5b51:1526	91.81.21.38
cb15:901b:8024:cd24:8081:155:5b51:1527	91.81.21.39
cb15:901b:8024:cd24:8081:155:5b51:1528	91.81.21.40
cb15:901b:8024:cd24:8081:155:5b51:1529	91.81.21.41
cb15:901b:8024:cd24:8081:155:5b51:152a	91.81.21.42
cb15:901b:8024:cd24:8081:155:5b51:152b	91.81.21.43
cb15:901b:8024:cd24:8081:155:5b51:152c	91.81.21.44
cb15:901b:8024:cd24:8081:155:5b51:152d	91.81.21.45
cb15:901b:8024:cd24:8081:155:5b51:152e	91.81.21.46
cb15:901b:8024:cd24:8081:155:5b51:152f	91.81.21.47
cb15:901b:8024:cd24:8081:155:5b51:1530	91.81.21.48
cb15:901b:8024:cd24:8081:155:5b51:1531	91.81.21.49
cb15:901b:8024:cd24:8081:155:5b51:1532	91.81.21.50
cb15:901b:8024:cd24:8081:155:5b51:1533	91.81.21.51
cb15:901b:8024:cd24:8081:155:5b51:1534	91.81.21.52
cb15:901b:8024:cd24:8081:155:5b51:1535	91.81.21.53
cb15:901b:8024:cd24:8081:155:5b51:1536	91.81.21.54
cb15:901b:8024:cd24:8081:155:5b51:1537	91.81.21.55
cb15:901b:8024:cd24:8081:155:5b51:1538	91.81.21.56
cb15:901b:8024:cd24:8081:155:5b51:1539	91.81.21.57
cb15:901b:8024:cd24:8081:155:5b51:153a	91.81.21.58
cb15:901b:8024:cd24:8081:155:5b51:153b	91.81.21.59
cb15:901b:8024:cd24:8081:155:5b51:153c	91.81.21.60

cb15:901b:8024:cd24:8081:155:5b51:153d	91.81.21.61
cb15:901b:8024:cd24:8081:155:5b51:153e	91.81.21.62
cb15:901b:8024:cd24:8081:155:5b51:153f	91.81.21.63
cb15:901b:8024:cd24:8081:155:5b51:1540	91.81.21.64
cb15:901b:8024:cd24:8081:155:5b51:1541	91.81.21.65
cb15:901b:8024:cd24:8081:155:5b51:1542	91.81.21.66
cb15:901b:8024:cd24:8081:155:5b51:1543	91.81.21.67
cb15:901b:8024:cd24:8081:155:5b51:1544	91.81.21.68
cb15:901b:8024:cd24:8081:155:5b51:1545	91.81.21.69
cb15:901b:8024:cd24:8081:155:5b51:1546	91.81.21.70
cb15:901b:8024:cd24:8081:155:5b51:1547	91.81.21.71
cb15:901b:8024:cd24:8081:155:5b51:1548	91.81.21.72
cb15:901b:8024:cd24:8081:155:5b51:1549	91.81.21.73
cb15:901b:8024:cd24:8081:155:5b51:154a	91.81.21.74
cb15:901b:8024:cd24:8081:155:5b51:154b	91.81.21.75
cb15:901b:8024:cd24:8081:155:5b51:154c	91.81.21.76
cb15:901b:8024:cd24:8081:155:5b51:154d	91.81.21.77
cb15:901b:8024:cd24:8081:155:5b51:154e	91.81.21.78
cb15:901b:8024:cd24:8081:155:5b51:154f	91.81.21.79
cb15:901b:8024:cd24:8081:155:5b51:1550	91.81.21.80
cb15:901b:8024:cd24:8081:155:5b51:1551	91.81.21.81
cb15:901b:8024:cd24:8081:155:5b51:1552	91.81.21.82
cb15:901b:8024:cd24:8081:155:5b51:1553	91.81.21.83
cb15:901b:8024:cd24:8081:155:5b51:1554	91.81.21.84
cb15:901b:8024:cd24:8081:155:5b51:1555	91.81.21.85
cb15:901b:8024:cd24:8081:155:5b51:1556	91.81.21.86
cb15:901b:8024:cd24:8081:155:5b51:1557	91.81.21.87
cb15:901b:8024:cd24:8081:155:5b51:1558	91.81.21.88
cb15:901b:8024:cd24:8081:155:5b51:1559	91.81.21.89
cb15:901b:8024:cd24:8081:155:5b51:155a	91.81.21.90
cb15:901b:8024:cd24:8081:155:5b51:155b	91.81.21.91
cb15:901b:8024:cd24:8081:155:5b51:155c	91.81.21.92
cb15:901b:8024:cd24:8081:155:5b51:155d	91.81.21.93
cb15:901b:8024:cd24:8081:155:5b51:155e	91.81.21.94
cb15:901b:8024:cd24:8081:155:5b51:155f	91.81.21.95
cb15:901b:8024:cd24:8081:155:5b51:1560	91.81.21.96
cb15:901b:8024:cd24:8081:155:5b51:1561	91.81.21.97
cb15:901b:8024:cd24:8081:155:5b51:1562	91.81.21.98
cb15:901b:8024:cd24:8081:155:5b51:1563	91.81.21.99
cb15:901b:8024:cd24:8081:155:5b51:1564	91.81.21.100
cb15:901b:8024:cd24:8081:155:5b51:1565	91.81.21.101
cb15:901b:8024:cd24:8081:155:5b51:1566	91.81.21.102
cb15:901b:8024:cd24:8081:155:5b51:1567	91.81.21.103
cb15:901b:8024:cd24:8081:155:5b51:1568	91.81.21.104
cb15:901b:8024:cd24:8081:155:5b51:1569	91.81.21.105
cb15:901b:8024:cd24:8081:155:5b51:156a	91.81.21.106
cb15:901b:8024:cd24:8081:155:5b51:156b	91.81.21.107
cb15:901b:8024:cd24:8081:155:5b51:156c	91.81.21.108
cb15:901b:8024:cd24:8081:155:5b51:156d	91.81.21.109
cb15:901b:8024:cd24:8081:155:5b51:156e	91.81.21.110
cb15:901b:8024:cd24:8081:155:5b51:156f	91.81.21.111
cb15:901b:8024:cd24:8081:155:5b51:1570	91.81.21.112
cb15:901b:8024:cd24:8081:155:5b51:1571	91.81.21.113
cb15:901b:8024:cd24:8081:155:5b51:1572	91.81.21.114
cb15:901b:8024:cd24:8081:155:5b51:1573	91.81.21.115
cb15:901b:8024:cd24:8081:155:5b51:1574	91.81.21.116
cb15:901b:8024:cd24:8081:155:5b51:1575	91.81.21.117
cb15:901b:8024:cd24:8081:155:5b51:1576	91.81.21.118
cb15:901b:8024:cd24:8081:155:5b51:1577	91.81.21.119
cb15:901b:8024:cd24:8081:155:5b51:1578	91.81.21.120

cb15:901b:8024:cd24:8081:155:5b51:1579	91.81.21.121
cb15:901b:8024:cd24:8081:155:5b51:157a	91.81.21.122
cb15:901b:8024:cd24:8081:155:5b51:157b	91.81.21.123
cb15:901b:8024:cd24:8081:155:5b51:157c	91.81.21.124
cb15:901b:8024:cd24:8081:155:5b51:157d	91.81.21.125
cb15:901b:8024:cd24:8081:155:5b51:157e	91.81.21.126
cb15:901b:8024:cd24:8081:155:5b51:157f	91.81.21.127
cb15:901b:8024:cd24:8081:155:5b51:1580	91.81.21.128
cb15:901b:8024:cd24:8081:155:5b51:1581	91.81.21.129
cb15:901b:8024:cd24:8081:155:5b51:1582	91.81.21.130
cb15:901b:8024:cd24:8081:155:5b51:1583	91.81.21.131
cb15:901b:8024:cd24:8081:155:5b51:1584	91.81.21.132
cb15:901b:8024:cd24:8081:155:5b51:1585	91.81.21.133
cb15:901b:8024:cd24:8081:155:5b51:1586	91.81.21.134
cb15:901b:8024:cd24:8081:155:5b51:1587	91.81.21.135
cb15:901b:8024:cd24:8081:155:5b51:1588	91.81.21.136
cb15:901b:8024:cd24:8081:155:5b51:1589	91.81.21.137
cb15:901b:8024:cd24:8081:155:5b51:158a	91.81.21.138
cb15:901b:8024:cd24:8081:155:5b51:158b	91.81.21.139
cb15:901b:8024:cd24:8081:155:5b51:158c	91.81.21.140
cb15:901b:8024:cd24:8081:155:5b51:158d	91.81.21.141
cb15:901b:8024:cd24:8081:155:5b51:158e	91.81.21.142
cb15:901b:8024:cd24:8081:155:5b51:158f	91.81.21.143
cb15:901b:8024:cd24:8081:155:5b51:1590	91.81.21.144
cb15:901b:8024:cd24:8081:155:5b51:1591	91.81.21.145
cb15:901b:8024:cd24:8081:155:5b51:1592	91.81.21.146
cb15:901b:8024:cd24:8081:155:5b51:1593	91.81.21.147
cb15:901b:8024:cd24:8081:155:5b51:1594	91.81.21.148
cb15:901b:8024:cd24:8081:155:5b51:1595	91.81.21.149
cb15:901b:8024:cd24:8081:155:5b51:1596	91.81.21.150
cb15:901b:8024:cd24:8081:155:5b51:1597	91.81.21.151
cb15:901b:8024:cd24:8081:155:5b51:1598	91.81.21.152
cb15:901b:8024:cd24:8081:155:5b51:1599	91.81.21.153
cb15:901b:8024:cd24:8081:155:5b51:159a	91.81.21.154
cb15:901b:8024:cd24:8081:155:5b51:159b	91.81.21.155
cb15:901b:8024:cd24:8081:155:5b51:159c	91.81.21.156
cb15:901b:8024:cd24:8081:155:5b51:159d	91.81.21.157
cb15:901b:8024:cd24:8081:155:5b51:159e	91.81.21.158
cb15:901b:8024:cd24:8081:155:5b51:159f	91.81.21.159
cb15:901b:8024:cd24:8081:155:5b51:15a0	91.81.21.160
cb15:901b:8024:cd24:8081:155:5b51:15a1	91.81.21.161
cb15:901b:8024:cd24:8081:155:5b51:15a2	91.81.21.162
cb15:901b:8024:cd24:8081:155:5b51:15a3	91.81.21.163
cb15:901b:8024:cd24:8081:155:5b51:15a4	91.81.21.164
cb15:901b:8024:cd24:8081:155:5b51:15a5	91.81.21.165
cb15:901b:8024:cd24:8081:155:5b51:15a6	91.81.21.166
cb15:901b:8024:cd24:8081:155:5b51:15a7	91.81.21.167
cb15:901b:8024:cd24:8081:155:5b51:15a8	91.81.21.168
cb15:901b:8024:cd24:8081:155:5b51:15a9	91.81.21.169
cb15:901b:8024:cd24:8081:155:5b51:15aa	91.81.21.170
cb15:901b:8024:cd24:8081:155:5b51:15ab	91.81.21.171
cb15:901b:8024:cd24:8081:155:5b51:15ac	91.81.21.172
cb15:901b:8024:cd24:8081:155:5b51:15ad	91.81.21.173
cb15:901b:8024:cd24:8081:155:5b51:15ae	91.81.21.174
cb15:901b:8024:cd24:8081:155:5b51:15af	91.81.21.175
cb15:901b:8024:cd24:8081:155:5b51:15b0	91.81.21.176
cb15:901b:8024:cd24:8081:155:5b51:15b1	91.81.21.177
cb15:901b:8024:cd24:8081:155:5b51:15b2	91.81.21.178
cb15:901b:8024:cd24:8081:155:5b51:15b3	91.81.21.179
cb15:901b:8024:cd24:8081:155:5b51:15b4	91.81.21.180

cb15:901b:8024:cd24:8081:155:5b51:15b5	91.81.21.181
cb15:901b:8024:cd24:8081:155:5b51:15b6	91.81.21.182
cb15:901b:8024:cd24:8081:155:5b51:15b7	91.81.21.183
cb15:901b:8024:cd24:8081:155:5b51:15b8	91.81.21.184
cb15:901b:8024:cd24:8081:155:5b51:15b9	91.81.21.185
cb15:901b:8024:cd24:8081:155:5b51:15ba	91.81.21.186
cb15:901b:8024:cd24:8081:155:5b51:15bb	91.81.21.187
cb15:901b:8024:cd24:8081:155:5b51:15bc	91.81.21.188
cb15:901b:8024:cd24:8081:155:5b51:15bd	91.81.21.189
cb15:901b:8024:cd24:8081:155:5b51:15be	91.81.21.190
cb15:901b:8024:cd24:8081:155:5b51:15bf	91.81.21.191
cb15:901b:8024:cd24:8081:155:5b51:15c0	91.81.21.192
cb15:901b:8024:cd24:8081:155:5b51:15c1	91.81.21.193
cb15:901b:8024:cd24:8081:155:5b51:15c2	91.81.21.194
cb15:901b:8024:cd24:8081:155:5b51:15c3	91.81.21.195
cb15:901b:8024:cd24:8081:155:5b51:15c4	91.81.21.196
cb15:901b:8024:cd24:8081:155:5b51:15c5	91.81.21.197
cb15:901b:8024:cd24:8081:155:5b51:15c6	91.81.21.198
cb15:901b:8024:cd24:8081:155:5b51:15c7	91.81.21.199
cb15:901b:8024:cd24:8081:155:5b51:15c8	91.81.21.200
cb15:901b:8024:cd24:8081:155:5b51:15c9	91.81.21.201
cb15:901b:8024:cd24:8081:155:5b51:15ca	91.81.21.202
cb15:901b:8024:cd24:8081:155:5b51:15cb	91.81.21.203
cb15:901b:8024:cd24:8081:155:5b51:15cc	91.81.21.204
cb15:901b:8024:cd24:8081:155:5b51:15cd	91.81.21.205
cb15:901b:8024:cd24:8081:155:5b51:15ce	91.81.21.206
cb15:901b:8024:cd24:8081:155:5b51:15cf	91.81.21.207
cb15:901b:8024:cd24:8081:155:5b51:15d0	91.81.21.208
cb15:901b:8024:cd24:8081:155:5b51:15d1	91.81.21.209
cb15:901b:8024:cd24:8081:155:5b51:15d2	91.81.21.210
cb15:901b:8024:cd24:8081:155:5b51:15d3	91.81.21.211
cb15:901b:8024:cd24:8081:155:5b51:15d4	91.81.21.212
cb15:901b:8024:cd24:8081:155:5b51:15d5	91.81.21.213
cb15:901b:8024:cd24:8081:155:5b51:15d6	91.81.21.214
cb15:901b:8024:cd24:8081:155:5b51:15d7	91.81.21.215
cb15:901b:8024:cd24:8081:155:5b51:15d8	91.81.21.216
cb15:901b:8024:cd24:8081:155:5b51:15d9	91.81.21.217
cb15:901b:8024:cd24:8081:155:5b51:15da	91.81.21.218
cb15:901b:8024:cd24:8081:155:5b51:15db	91.81.21.219
cb15:901b:8024:cd24:8081:155:5b51:15dc	91.81.21.220
cb15:901b:8024:cd24:8081:155:5b51:15dd	91.81.21.221
cb15:901b:8024:cd24:8081:155:5b51:15de	91.81.21.222
cb15:901b:8024:cd24:8081:155:5b51:15df	91.81.21.223
cb15:901b:8024:cd24:8081:155:5b51:15e0	91.81.21.224
cb15:901b:8024:cd24:8081:155:5b51:15e1	91.81.21.225
cb15:901b:8024:cd24:8081:155:5b51:15e2	91.81.21.226
cb15:901b:8024:cd24:8081:155:5b51:15e3	91.81.21.227
cb15:901b:8024:cd24:8081:155:5b51:15e4	91.81.21.228
cb15:901b:8024:cd24:8081:155:5b51:15e5	91.81.21.229
cb15:901b:8024:cd24:8081:155:5b51:15e6	91.81.21.230
cb15:901b:8024:cd24:8081:155:5b51:15e7	91.81.21.231
cb15:901b:8024:cd24:8081:155:5b51:15e8	91.81.21.232
cb15:901b:8024:cd24:8081:155:5b51:15e9	91.81.21.233
cb15:901b:8024:cd24:8081:155:5b51:15ea	91.81.21.234
cb15:901b:8024:cd24:8081:155:5b51:15eb	91.81.21.235
cb15:901b:8024:cd24:8081:155:5b51:15ec	91.81.21.236
cb15:901b:8024:cd24:8081:155:5b51:15ed	91.81.21.237
cb15:901b:8024:cd24:8081:155:5b51:15ee	91.81.21.238
cb15:901b:8024:cd24:8081:155:5b51:15ef	91.81.21.239
cb15:901b:8024:cd24:8081:155:5b51:15f0	91.81.21.240
cb15:901b:8024:cd24:8081:155:5b51:15f1	91.81.21.241
cb15:901b:8024:cd24:8081:155:5b51:15f2	91.81.21.242
cb15:901b:8024:cd24:8081:155:5b51:15f3	91.81.21.243
cb15:901b:8024:cd24:8081:155:5b51:15f4	91.81.21.244
cb15:901b:8024:cd24:8081:155:5b51:15f5	91.81.21.245
cb15:901b:8024:cd24:8081:155:5b51:15f6	91.81.21.246
cb15:901b:8024:cd24:8081:155:5b51:15f7	91.81.21.247
cb15:901b:8024:cd24:8081:155:5b51:15f8	91.81.21.248
cb15:901b:8024:cd24:8081:155:5b51:15f9	91.81.21.249
cb15:901b:8024:cd24:8081:155:5b51:15fa	91.81.21.250
cb15:901b:8024:cd24:8081:155:5b51:15fb	91.81.21.251
cb15:901b:8024:cd24:8081:155:5b51:15fc	91.81.21.252
cb15:901b:8024:cd24:8081:155:5b51:15fd	91.81.21.253
cb15:901b:8024:cd24:8081:155:5b51:15fe	91.81.21.254
cb15:901b:8024:cd24:8081:155:5b51:15ff	91.81.21.255

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.