IPv6 Subnet Calculator

Enter an IPv6 address with a prefix to see its network, address range, number of /64 subnets, and its full and short forms. You can also split the prefix into smaller subnets.

Try:2001:db8:abcd::1/48 2001:db8::/32 fd00:1234::/56 fe80::1/64

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documentation2001:db8:abcd:51::/64

network2001:db8:abcd:51::/64

first host2001:db8:abcd:51::

last host2001:db8:abcd:51:ffff:ffff:ffff:ffff

addresses2⁶⁴ = 18,446,744,073,709,551,616

/64 subnets1

short form2001:db8:abcd:51::

ipcalc 2001:db8:abcd:51::/64

address2001:0db8:abcd:0051:0000:0000:0000:0000

network2001:0db8:abcd:0051:0000:0000:0000:0000

last host2001:0db8:abcd:0051:ffff:ffff:ffff:ffff

green = network digits, amber = digit split by the prefix

full form2001:0db8:abcd:0051:0000:0000:0000:0000

reverse dns0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.1.5.0.0.d.c.b.a.8.b.d.0.1.0.0.2.ip6.arpa

/64 split into /127 · 9,223,372,036,854,775,808 subnets

close ×

#	network	last address
1	2001:db8:abcd:51::/127	2001:db8:abcd:51::1
2	2001:db8:abcd:51::2/127	2001:db8:abcd:51::3
3	2001:db8:abcd:51::4/127	2001:db8:abcd:51::5
4	2001:db8:abcd:51::6/127	2001:db8:abcd:51::7
5	2001:db8:abcd:51::8/127	2001:db8:abcd:51::9
6	2001:db8:abcd:51::a/127	2001:db8:abcd:51::b
7	2001:db8:abcd:51::c/127	2001:db8:abcd:51::d
8	2001:db8:abcd:51::e/127	2001:db8:abcd:51::f
9	2001:db8:abcd:51::10/127	2001:db8:abcd:51::11
10	2001:db8:abcd:51::12/127	2001:db8:abcd:51::13
11	2001:db8:abcd:51::14/127	2001:db8:abcd:51::15
12	2001:db8:abcd:51::16/127	2001:db8:abcd:51::17
13	2001:db8:abcd:51::18/127	2001:db8:abcd:51::19
14	2001:db8:abcd:51::1a/127	2001:db8:abcd:51::1b
15	2001:db8:abcd:51::1c/127	2001:db8:abcd:51::1d
16	2001:db8:abcd:51::1e/127	2001:db8:abcd:51::1f
17	2001:db8:abcd:51::20/127	2001:db8:abcd:51::21
18	2001:db8:abcd:51::22/127	2001:db8:abcd:51::23
19	2001:db8:abcd:51::24/127	2001:db8:abcd:51::25
20	2001:db8:abcd:51::26/127	2001:db8:abcd:51::27
21	2001:db8:abcd:51::28/127	2001:db8:abcd:51::29
22	2001:db8:abcd:51::2a/127	2001:db8:abcd:51::2b
23	2001:db8:abcd:51::2c/127	2001:db8:abcd:51::2d
24	2001:db8:abcd:51::2e/127	2001:db8:abcd:51::2f
25	2001:db8:abcd:51::30/127	2001:db8:abcd:51::31
26	2001:db8:abcd:51::32/127	2001:db8:abcd:51::33
27	2001:db8:abcd:51::34/127	2001:db8:abcd:51::35
28	2001:db8:abcd:51::36/127	2001:db8:abcd:51::37
29	2001:db8:abcd:51::38/127	2001:db8:abcd:51::39
30	2001:db8:abcd:51::3a/127	2001:db8:abcd:51::3b
31	2001:db8:abcd:51::3c/127	2001:db8:abcd:51::3d
32	2001:db8:abcd:51::3e/127	2001:db8:abcd:51::3f
33	2001:db8:abcd:51::40/127	2001:db8:abcd:51::41
34	2001:db8:abcd:51::42/127	2001:db8:abcd:51::43
35	2001:db8:abcd:51::44/127	2001:db8:abcd:51::45
36	2001:db8:abcd:51::46/127	2001:db8:abcd:51::47
37	2001:db8:abcd:51::48/127	2001:db8:abcd:51::49
38	2001:db8:abcd:51::4a/127	2001:db8:abcd:51::4b
39	2001:db8:abcd:51::4c/127	2001:db8:abcd:51::4d
40	2001:db8:abcd:51::4e/127	2001:db8:abcd:51::4f
41	2001:db8:abcd:51::50/127	2001:db8:abcd:51::51
42	2001:db8:abcd:51::52/127	2001:db8:abcd:51::53
43	2001:db8:abcd:51::54/127	2001:db8:abcd:51::55
44	2001:db8:abcd:51::56/127	2001:db8:abcd:51::57
45	2001:db8:abcd:51::58/127	2001:db8:abcd:51::59
46	2001:db8:abcd:51::5a/127	2001:db8:abcd:51::5b
47	2001:db8:abcd:51::5c/127	2001:db8:abcd:51::5d
48	2001:db8:abcd:51::5e/127	2001:db8:abcd:51::5f
49	2001:db8:abcd:51::60/127	2001:db8:abcd:51::61
50	2001:db8:abcd:51::62/127	2001:db8:abcd:51::63
51	2001:db8:abcd:51::64/127	2001:db8:abcd:51::65
52	2001:db8:abcd:51::66/127	2001:db8:abcd:51::67
53	2001:db8:abcd:51::68/127	2001:db8:abcd:51::69
54	2001:db8:abcd:51::6a/127	2001:db8:abcd:51::6b
55	2001:db8:abcd:51::6c/127	2001:db8:abcd:51::6d
56	2001:db8:abcd:51::6e/127	2001:db8:abcd:51::6f
57	2001:db8:abcd:51::70/127	2001:db8:abcd:51::71
58	2001:db8:abcd:51::72/127	2001:db8:abcd:51::73
59	2001:db8:abcd:51::74/127	2001:db8:abcd:51::75
60	2001:db8:abcd:51::76/127	2001:db8:abcd:51::77
61	2001:db8:abcd:51::78/127	2001:db8:abcd:51::79
62	2001:db8:abcd:51::7a/127	2001:db8:abcd:51::7b
63	2001:db8:abcd:51::7c/127	2001:db8:abcd:51::7d
64	2001:db8:abcd:51::7e/127	2001:db8:abcd:51::7f
65	2001:db8:abcd:51::80/127	2001:db8:abcd:51::81
66	2001:db8:abcd:51::82/127	2001:db8:abcd:51::83
67	2001:db8:abcd:51::84/127	2001:db8:abcd:51::85
68	2001:db8:abcd:51::86/127	2001:db8:abcd:51::87
69	2001:db8:abcd:51::88/127	2001:db8:abcd:51::89
70	2001:db8:abcd:51::8a/127	2001:db8:abcd:51::8b
71	2001:db8:abcd:51::8c/127	2001:db8:abcd:51::8d
72	2001:db8:abcd:51::8e/127	2001:db8:abcd:51::8f
73	2001:db8:abcd:51::90/127	2001:db8:abcd:51::91
74	2001:db8:abcd:51::92/127	2001:db8:abcd:51::93
75	2001:db8:abcd:51::94/127	2001:db8:abcd:51::95
76	2001:db8:abcd:51::96/127	2001:db8:abcd:51::97
77	2001:db8:abcd:51::98/127	2001:db8:abcd:51::99
78	2001:db8:abcd:51::9a/127	2001:db8:abcd:51::9b
79	2001:db8:abcd:51::9c/127	2001:db8:abcd:51::9d
80	2001:db8:abcd:51::9e/127	2001:db8:abcd:51::9f
81	2001:db8:abcd:51::a0/127	2001:db8:abcd:51::a1
82	2001:db8:abcd:51::a2/127	2001:db8:abcd:51::a3
83	2001:db8:abcd:51::a4/127	2001:db8:abcd:51::a5
84	2001:db8:abcd:51::a6/127	2001:db8:abcd:51::a7
85	2001:db8:abcd:51::a8/127	2001:db8:abcd:51::a9
86	2001:db8:abcd:51::aa/127	2001:db8:abcd:51::ab
87	2001:db8:abcd:51::ac/127	2001:db8:abcd:51::ad
88	2001:db8:abcd:51::ae/127	2001:db8:abcd:51::af
89	2001:db8:abcd:51::b0/127	2001:db8:abcd:51::b1
90	2001:db8:abcd:51::b2/127	2001:db8:abcd:51::b3
91	2001:db8:abcd:51::b4/127	2001:db8:abcd:51::b5
92	2001:db8:abcd:51::b6/127	2001:db8:abcd:51::b7
93	2001:db8:abcd:51::b8/127	2001:db8:abcd:51::b9
94	2001:db8:abcd:51::ba/127	2001:db8:abcd:51::bb
95	2001:db8:abcd:51::bc/127	2001:db8:abcd:51::bd
96	2001:db8:abcd:51::be/127	2001:db8:abcd:51::bf
97	2001:db8:abcd:51::c0/127	2001:db8:abcd:51::c1
98	2001:db8:abcd:51::c2/127	2001:db8:abcd:51::c3
99	2001:db8:abcd:51::c4/127	2001:db8:abcd:51::c5
100	2001:db8:abcd:51::c6/127	2001:db8:abcd:51::c7
101	2001:db8:abcd:51::c8/127	2001:db8:abcd:51::c9
102	2001:db8:abcd:51::ca/127	2001:db8:abcd:51::cb
103	2001:db8:abcd:51::cc/127	2001:db8:abcd:51::cd
104	2001:db8:abcd:51::ce/127	2001:db8:abcd:51::cf
105	2001:db8:abcd:51::d0/127	2001:db8:abcd:51::d1
106	2001:db8:abcd:51::d2/127	2001:db8:abcd:51::d3
107	2001:db8:abcd:51::d4/127	2001:db8:abcd:51::d5
108	2001:db8:abcd:51::d6/127	2001:db8:abcd:51::d7
109	2001:db8:abcd:51::d8/127	2001:db8:abcd:51::d9
110	2001:db8:abcd:51::da/127	2001:db8:abcd:51::db
111	2001:db8:abcd:51::dc/127	2001:db8:abcd:51::dd
112	2001:db8:abcd:51::de/127	2001:db8:abcd:51::df
113	2001:db8:abcd:51::e0/127	2001:db8:abcd:51::e1
114	2001:db8:abcd:51::e2/127	2001:db8:abcd:51::e3
115	2001:db8:abcd:51::e4/127	2001:db8:abcd:51::e5
116	2001:db8:abcd:51::e6/127	2001:db8:abcd:51::e7
117	2001:db8:abcd:51::e8/127	2001:db8:abcd:51::e9
118	2001:db8:abcd:51::ea/127	2001:db8:abcd:51::eb
119	2001:db8:abcd:51::ec/127	2001:db8:abcd:51::ed
120	2001:db8:abcd:51::ee/127	2001:db8:abcd:51::ef
121	2001:db8:abcd:51::f0/127	2001:db8:abcd:51::f1
122	2001:db8:abcd:51::f2/127	2001:db8:abcd:51::f3
123	2001:db8:abcd:51::f4/127	2001:db8:abcd:51::f5
124	2001:db8:abcd:51::f6/127	2001:db8:abcd:51::f7
125	2001:db8:abcd:51::f8/127	2001:db8:abcd:51::f9
126	2001:db8:abcd:51::fa/127	2001:db8:abcd:51::fb
127	2001:db8:abcd:51::fc/127	2001:db8:abcd:51::fd
128	2001:db8:abcd:51::fe/127	2001:db8:abcd:51::ff
129	2001:db8:abcd:51::100/127	2001:db8:abcd:51::101
130	2001:db8:abcd:51::102/127	2001:db8:abcd:51::103
131	2001:db8:abcd:51::104/127	2001:db8:abcd:51::105
132	2001:db8:abcd:51::106/127	2001:db8:abcd:51::107
133	2001:db8:abcd:51::108/127	2001:db8:abcd:51::109
134	2001:db8:abcd:51::10a/127	2001:db8:abcd:51::10b
135	2001:db8:abcd:51::10c/127	2001:db8:abcd:51::10d
136	2001:db8:abcd:51::10e/127	2001:db8:abcd:51::10f
137	2001:db8:abcd:51::110/127	2001:db8:abcd:51::111
138	2001:db8:abcd:51::112/127	2001:db8:abcd:51::113
139	2001:db8:abcd:51::114/127	2001:db8:abcd:51::115
140	2001:db8:abcd:51::116/127	2001:db8:abcd:51::117
141	2001:db8:abcd:51::118/127	2001:db8:abcd:51::119
142	2001:db8:abcd:51::11a/127	2001:db8:abcd:51::11b
143	2001:db8:abcd:51::11c/127	2001:db8:abcd:51::11d
144	2001:db8:abcd:51::11e/127	2001:db8:abcd:51::11f
145	2001:db8:abcd:51::120/127	2001:db8:abcd:51::121
146	2001:db8:abcd:51::122/127	2001:db8:abcd:51::123
147	2001:db8:abcd:51::124/127	2001:db8:abcd:51::125
148	2001:db8:abcd:51::126/127	2001:db8:abcd:51::127
149	2001:db8:abcd:51::128/127	2001:db8:abcd:51::129
150	2001:db8:abcd:51::12a/127	2001:db8:abcd:51::12b
151	2001:db8:abcd:51::12c/127	2001:db8:abcd:51::12d
152	2001:db8:abcd:51::12e/127	2001:db8:abcd:51::12f
153	2001:db8:abcd:51::130/127	2001:db8:abcd:51::131
154	2001:db8:abcd:51::132/127	2001:db8:abcd:51::133
155	2001:db8:abcd:51::134/127	2001:db8:abcd:51::135
156	2001:db8:abcd:51::136/127	2001:db8:abcd:51::137
157	2001:db8:abcd:51::138/127	2001:db8:abcd:51::139
158	2001:db8:abcd:51::13a/127	2001:db8:abcd:51::13b
159	2001:db8:abcd:51::13c/127	2001:db8:abcd:51::13d
160	2001:db8:abcd:51::13e/127	2001:db8:abcd:51::13f
161	2001:db8:abcd:51::140/127	2001:db8:abcd:51::141
162	2001:db8:abcd:51::142/127	2001:db8:abcd:51::143
163	2001:db8:abcd:51::144/127	2001:db8:abcd:51::145
164	2001:db8:abcd:51::146/127	2001:db8:abcd:51::147
165	2001:db8:abcd:51::148/127	2001:db8:abcd:51::149
166	2001:db8:abcd:51::14a/127	2001:db8:abcd:51::14b
167	2001:db8:abcd:51::14c/127	2001:db8:abcd:51::14d
168	2001:db8:abcd:51::14e/127	2001:db8:abcd:51::14f
169	2001:db8:abcd:51::150/127	2001:db8:abcd:51::151
170	2001:db8:abcd:51::152/127	2001:db8:abcd:51::153
171	2001:db8:abcd:51::154/127	2001:db8:abcd:51::155
172	2001:db8:abcd:51::156/127	2001:db8:abcd:51::157
173	2001:db8:abcd:51::158/127	2001:db8:abcd:51::159
174	2001:db8:abcd:51::15a/127	2001:db8:abcd:51::15b
175	2001:db8:abcd:51::15c/127	2001:db8:abcd:51::15d
176	2001:db8:abcd:51::15e/127	2001:db8:abcd:51::15f
177	2001:db8:abcd:51::160/127	2001:db8:abcd:51::161
178	2001:db8:abcd:51::162/127	2001:db8:abcd:51::163
179	2001:db8:abcd:51::164/127	2001:db8:abcd:51::165
180	2001:db8:abcd:51::166/127	2001:db8:abcd:51::167
181	2001:db8:abcd:51::168/127	2001:db8:abcd:51::169
182	2001:db8:abcd:51::16a/127	2001:db8:abcd:51::16b
183	2001:db8:abcd:51::16c/127	2001:db8:abcd:51::16d
184	2001:db8:abcd:51::16e/127	2001:db8:abcd:51::16f
185	2001:db8:abcd:51::170/127	2001:db8:abcd:51::171
186	2001:db8:abcd:51::172/127	2001:db8:abcd:51::173
187	2001:db8:abcd:51::174/127	2001:db8:abcd:51::175
188	2001:db8:abcd:51::176/127	2001:db8:abcd:51::177
189	2001:db8:abcd:51::178/127	2001:db8:abcd:51::179
190	2001:db8:abcd:51::17a/127	2001:db8:abcd:51::17b
191	2001:db8:abcd:51::17c/127	2001:db8:abcd:51::17d
192	2001:db8:abcd:51::17e/127	2001:db8:abcd:51::17f
193	2001:db8:abcd:51::180/127	2001:db8:abcd:51::181
194	2001:db8:abcd:51::182/127	2001:db8:abcd:51::183
195	2001:db8:abcd:51::184/127	2001:db8:abcd:51::185
196	2001:db8:abcd:51::186/127	2001:db8:abcd:51::187
197	2001:db8:abcd:51::188/127	2001:db8:abcd:51::189
198	2001:db8:abcd:51::18a/127	2001:db8:abcd:51::18b
199	2001:db8:abcd:51::18c/127	2001:db8:abcd:51::18d
200	2001:db8:abcd:51::18e/127	2001:db8:abcd:51::18f
201	2001:db8:abcd:51::190/127	2001:db8:abcd:51::191
202	2001:db8:abcd:51::192/127	2001:db8:abcd:51::193
203	2001:db8:abcd:51::194/127	2001:db8:abcd:51::195
204	2001:db8:abcd:51::196/127	2001:db8:abcd:51::197
205	2001:db8:abcd:51::198/127	2001:db8:abcd:51::199
206	2001:db8:abcd:51::19a/127	2001:db8:abcd:51::19b
207	2001:db8:abcd:51::19c/127	2001:db8:abcd:51::19d
208	2001:db8:abcd:51::19e/127	2001:db8:abcd:51::19f
209	2001:db8:abcd:51::1a0/127	2001:db8:abcd:51::1a1
210	2001:db8:abcd:51::1a2/127	2001:db8:abcd:51::1a3
211	2001:db8:abcd:51::1a4/127	2001:db8:abcd:51::1a5
212	2001:db8:abcd:51::1a6/127	2001:db8:abcd:51::1a7
213	2001:db8:abcd:51::1a8/127	2001:db8:abcd:51::1a9
214	2001:db8:abcd:51::1aa/127	2001:db8:abcd:51::1ab
215	2001:db8:abcd:51::1ac/127	2001:db8:abcd:51::1ad
216	2001:db8:abcd:51::1ae/127	2001:db8:abcd:51::1af
217	2001:db8:abcd:51::1b0/127	2001:db8:abcd:51::1b1
218	2001:db8:abcd:51::1b2/127	2001:db8:abcd:51::1b3
219	2001:db8:abcd:51::1b4/127	2001:db8:abcd:51::1b5
220	2001:db8:abcd:51::1b6/127	2001:db8:abcd:51::1b7
221	2001:db8:abcd:51::1b8/127	2001:db8:abcd:51::1b9
222	2001:db8:abcd:51::1ba/127	2001:db8:abcd:51::1bb
223	2001:db8:abcd:51::1bc/127	2001:db8:abcd:51::1bd
224	2001:db8:abcd:51::1be/127	2001:db8:abcd:51::1bf
225	2001:db8:abcd:51::1c0/127	2001:db8:abcd:51::1c1
226	2001:db8:abcd:51::1c2/127	2001:db8:abcd:51::1c3
227	2001:db8:abcd:51::1c4/127	2001:db8:abcd:51::1c5
228	2001:db8:abcd:51::1c6/127	2001:db8:abcd:51::1c7
229	2001:db8:abcd:51::1c8/127	2001:db8:abcd:51::1c9
230	2001:db8:abcd:51::1ca/127	2001:db8:abcd:51::1cb
231	2001:db8:abcd:51::1cc/127	2001:db8:abcd:51::1cd
232	2001:db8:abcd:51::1ce/127	2001:db8:abcd:51::1cf
233	2001:db8:abcd:51::1d0/127	2001:db8:abcd:51::1d1
234	2001:db8:abcd:51::1d2/127	2001:db8:abcd:51::1d3
235	2001:db8:abcd:51::1d4/127	2001:db8:abcd:51::1d5
236	2001:db8:abcd:51::1d6/127	2001:db8:abcd:51::1d7
237	2001:db8:abcd:51::1d8/127	2001:db8:abcd:51::1d9
238	2001:db8:abcd:51::1da/127	2001:db8:abcd:51::1db
239	2001:db8:abcd:51::1dc/127	2001:db8:abcd:51::1dd
240	2001:db8:abcd:51::1de/127	2001:db8:abcd:51::1df
241	2001:db8:abcd:51::1e0/127	2001:db8:abcd:51::1e1
242	2001:db8:abcd:51::1e2/127	2001:db8:abcd:51::1e3
243	2001:db8:abcd:51::1e4/127	2001:db8:abcd:51::1e5
244	2001:db8:abcd:51::1e6/127	2001:db8:abcd:51::1e7
245	2001:db8:abcd:51::1e8/127	2001:db8:abcd:51::1e9
246	2001:db8:abcd:51::1ea/127	2001:db8:abcd:51::1eb
247	2001:db8:abcd:51::1ec/127	2001:db8:abcd:51::1ed
248	2001:db8:abcd:51::1ee/127	2001:db8:abcd:51::1ef
249	2001:db8:abcd:51::1f0/127	2001:db8:abcd:51::1f1
250	2001:db8:abcd:51::1f2/127	2001:db8:abcd:51::1f3
251	2001:db8:abcd:51::1f4/127	2001:db8:abcd:51::1f5
252	2001:db8:abcd:51::1f6/127	2001:db8:abcd:51::1f7
253	2001:db8:abcd:51::1f8/127	2001:db8:abcd:51::1f9
254	2001:db8:abcd:51::1fa/127	2001:db8:abcd:51::1fb
255	2001:db8:abcd:51::1fc/127	2001:db8:abcd:51::1fd
256	2001:db8:abcd:51::1fe/127	2001:db8:abcd:51::1ff

showing 256 of 9,223,372,036,854,775,808

01 / table

IPv6 prefix table.

Click a prefix longer than your network to split it into subnets.

prefix	addresses	/64 subnets	in your /64
/8	2¹²⁰	2⁵⁶	-
/12	2¹¹⁶	2⁵²	-
/16	2¹¹²	2⁴⁸	-
/20	2¹⁰⁸	2⁴⁴	-
/24	2¹⁰⁴	2⁴⁰	-
/28	2¹⁰⁰	2³⁶	-
/32	2⁹⁶	4,294,967,296	-
/36	2⁹²	268,435,456	-
/40	2⁸⁸	16,777,216	-
/44	2⁸⁴	1,048,576	-
/48	2⁸⁰	65,536	-
/52	2⁷⁶	4,096	-
/56	2⁷²	256	-
/60	2⁶⁸	16	-
/64	2⁶⁴	1	1
/72	2⁵⁶	-	256 split →
/80	2⁴⁸	-	65,536 split →
/96	4,294,967,296	-	4,294,967,296 split →
/112	65,536	-	2⁴⁸ split →
/120	256	-	2⁵⁶ split →
/124	16	-	2⁶⁰ split →
/126	4	-	2⁶² split →
/127	2	-	2⁶³ split →
/128	1	-	2⁶⁴ split →

02 / faq

About this calculator.

How do I use this IPv6 calculator?

▼

Type an IPv6 address followed by a prefix, like 2001:db8:abcd::1/48. Without a prefix it uses /64. The address can be written in full or shortened with ::.

Why does IPv6 have no broadcast address?

▼

IPv6 replaced broadcast with multicast, so no address is set aside for it. That is why this calculator shows the whole range, from the network address to the last address.

What prefix do ISPs usually hand out?

▼

A single LAN is almost always a /64. Home customers usually get a /56 or /60, and an organization or site usually gets a /48. One /48 holds 65,536 /64 subnets.

Learn how to work it out →