Allocated but unannounced space
Every block here was allocated or assigned by a regional internet registry, and none of them appeared in any routing table we collected at our last snapshot — neither as a route of their own, nor covered by a larger announcement, nor carved up into more specifics.
“Unannounced” does not mean “unused”
Plenty of allocated space is deliberately kept off the public internet: private interconnects, lab and lawful-intercept ranges, networks reachable only inside one operator, and space held in reserve. Some of it is announced somewhere our collectors cannot see, which is a limit of our vantage points rather than a fact about the block.
It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today. Nothing on this page means a block is unallocated, available, or free to announce.
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Countries with the most unannounced blocks, largest first.
Unannounced blocks
84,432 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 2602:f966::/32 | 4.3B × /64 | ARIN | 26th Feb 2024 | |
| 2602:f967::/40 | 16.8M × /64 | ARIN | 26th Feb 2024 | |
| 2602:f96e::/40 | 16.8M × /64 | ARIN | 21st Feb 2024 | |
| 2602:f970::/36 | 268M × /64 | ARIN | 14th Feb 2024 | |
| 2602:f985::/40 | 16.8M × /64 | ARIN | 5th Feb 2024 | |
| 2602:f986::/36 | 268M × /64 | ARIN | 5th Feb 2024 | |
| 2602:f98a::/40 | 16.8M × /64 | ARIN | 31st Jan 2024 | |
| 2602:f98c::/36 | 268M × /64 | ARIN | 31st Jan 2024 | |
| 2602:f990::/36 | 268M × /64 | ARIN | 30th Jan 2024 | |
| 2602:f991::/36 | 268M × /64 | ARIN | 29th Jan 2024 | |
| 2602:f998::/36 | 268M × /64 | ARIN | 23rd Jan 2024 | |
| 2602:f999::/36 | 268M × /64 | ARIN | 23rd Jan 2024 | |
| 2602:f99a::/40 | 16.8M × /64 | ARIN | 22nd Jan 2024 | |
| 2602:f99e::/36 | 268M × /64 | ARIN | 16th Jan 2024 | |
| 2602:f9a1::/36 | 268M × /64 | ARIN | 16th Jan 2024 | |
| 2602:f9a8::/36 | 268M × /64 | ARIN | 9th Jan 2024 | |
| 2602:f9b0::/36 | 268M × /64 | ARIN | 4th Jan 2024 | |
| 2602:f9b2::/40 | 16.8M × /64 | ARIN | 2nd Jan 2024 | |
| 2602:f9b3::/40 | 16.8M × /64 | ARIN | 2nd Jan 2024 | |
| 2602:f9b4::/36 | 268M × /64 | ARIN | 2nd Jan 2024 | |
| 2602:f9b5::/36 | 268M × /64 | ARIN | 28th Dec 2023 | |
| 2602:f9b6::/40 | 16.8M × /64 | ARIN | 27th Dec 2023 | |
| 2602:f9b7::/40 | 16.8M × /64 | ARIN | 22nd Dec 2023 | |
| 2602:f9b9::/36 | 268M × /64 | ARIN | 19th Dec 2023 | |
| 2602:f9bc::/40 | 16.8M × /64 | ARIN | 18th Dec 2023 | |
| 2602:f9bf::/36 | 268M × /64 | ARIN | 14th Dec 2023 | |
| 2602:f9c1::/40 | 16.8M × /64 | ARIN | 13th Dec 2023 | |
| 2602:f9c4::/40 | 16.8M × /64 | ARIN | 12th Dec 2023 | |
| 2602:f9c5::/36 | 268M × /64 | ARIN | 12th Dec 2023 | |
| 2602:f9c8::/40 | 16.8M × /64 | ARIN | 8th Dec 2023 | |
| 2602:f9cb::/40 | 16.8M × /64 | ARIN | 5th Dec 2023 | |
| 2602:f9cc::/40 | 16.8M × /64 | ARIN | 5th Dec 2023 | |
| 2602:f9cd::/40 | 16.8M × /64 | ARIN | 4th Dec 2023 | |
| 2602:f9d1::/36 | 268M × /64 | ARIN | 1st Dec 2023 | |
| 2602:f9d4::/40 | 16.8M × /64 | ARIN | 29th Nov 2023 | |
| 2602:f9d5::/40 | 16.8M × /64 | ARIN | 29th Nov 2023 | |
| 2602:f9d6::/40 | 16.8M × /64 | ARIN | 27th Nov 2023 | |
| 2602:f9d7::/40 | 16.8M × /64 | ARIN | 27th Nov 2023 | |
| 2602:f9d8::/36 | 268M × /64 | ARIN | 27th Nov 2023 | |
| 2602:f9d9::/40 | 16.8M × /64 | ARIN | 22nd Nov 2023 | |
| 2602:f9da::/36 | 268M × /64 | ARIN | 22nd Nov 2023 | |
| 2602:f9db::/40 | 16.8M × /64 | ARIN | 21st Nov 2023 | |
| 2602:f9dc::/40 | 16.8M × /64 | ARIN | 20th Nov 2023 | |
| 2602:f9dd::/40 | 16.8M × /64 | ARIN | 17th Nov 2023 | |
| 2602:f9e2::/40 | 16.8M × /64 | ARIN | 14th Nov 2023 | |
| 2602:f9e3::/40 | 16.8M × /64 | ARIN | 14th Nov 2023 | |
| 2602:f9e5::/36 | 268M × /64 | ARIN | 13th Nov 2023 | |
| 2602:f9e9::/36 | 268M × /64 | ARIN | 13th Nov 2023 | |
| 2602:f9ea::/40 | 16.8M × /64 | ARIN | 13th Nov 2023 | |
| 2602:f9ee::/40 | 16.8M × /64 | ARIN | 8th Nov 2023 |