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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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:faf8::/40 | 16.8M × /64 | ARIN | 19th Oct 2022 | |
| 2602:fafa::/36 | 268M × /64 | ARIN | 17th Oct 2022 | |
| 2602:faff::/40 | 16.8M × /64 | ARIN | 13th Oct 2022 | |
| 2602:fb02::/40 | 16.8M × /64 | ARIN | 6th Oct 2022 | |
| 2602:fb03::/40 | 16.8M × /64 | ARIN | 6th Oct 2022 | |
| 2602:fb05::/40 | 16.8M × /64 | ARIN | 29th Sept 2022 | |
| 2602:fb06::/40 | 16.8M × /64 | ARIN | 29th Sept 2022 | |
| 2602:fb09::/36 | 268M × /64 | ARIN | 21st Sept 2022 | |
| 2602:fb0c::/40 | 16.8M × /64 | ARIN | 19th Sept 2022 | |
| 2602:fb0e::/40 | 16.8M × /64 | ARIN | 19th Sept 2022 | |
| 2602:fb12::/40 | 16.8M × /64 | ARIN | 12th Sept 2022 | |
| 2602:fb13::/40 | 16.8M × /64 | ARIN | 8th Sept 2022 | |
| 2602:fb16::/36 | 268M × /64 | ARIN | 5th Sept 2022 | |
| 2602:fb17::/40 | 16.8M × /64 | ARIN | 5th Sept 2022 | |
| 2602:fb18::/36 | 268M × /64 | ARIN | 2nd Sept 2022 | |
| 2602:fb19::/40 | 16.8M × /64 | ARIN | 1st Sept 2022 | |
| 2602:fb1c::/36 | 268M × /64 | ARIN | 31st Aug 2022 | |
| 2602:fb1e::/36 | 268M × /64 | ARIN | 29th Aug 2022 | |
| 2602:fb1f::/40 | 16.8M × /64 | ARIN | 29th Aug 2022 | |
| 2602:fb23::/40 | 16.8M × /64 | ARIN | 19th Aug 2022 | |
| 2602:fb24::/40 | 16.8M × /64 | ARIN | 19th Aug 2022 | |
| 2602:fb28::/40 | 16.8M × /64 | ARIN | 16th Aug 2022 | |
| 2602:fb2c::/36 | 268M × /64 | ARIN | 12th Aug 2022 | |
| 2602:fb2d::/40 | 16.8M × /64 | ARIN | 10th Aug 2022 | |
| 2602:fb2e::/36 | 268M × /64 | ARIN | 9th Aug 2022 | |
| 2602:fb34::/36 | 268M × /64 | ARIN | 5th Aug 2022 | |
| 2602:fb36::/36 | 268M × /64 | ARIN | 28th Jul 2022 | |
| 2602:fb39::/36 | 268M × /64 | ARIN | 25th Jul 2022 | |
| 2602:fb3a::/40 | 16.8M × /64 | ARIN | 21st Jul 2022 | |
| 2602:fb3b::/40 | 16.8M × /64 | ARIN | 19th Jul 2022 | |
| 2602:fb43::/40 | 16.8M × /64 | ARIN | 8th Jul 2022 | |
| 2602:fb44::/36 | 268M × /64 | ARIN | 8th Jul 2022 | |
| 2602:fb46::/40 | 16.8M × /64 | ARIN | 7th Jul 2022 | |
| 2602:fb47::/36 | 268M × /64 | ARIN | 7th Jul 2022 | |
| 2602:fb48::/40 | 16.8M × /64 | ARIN | 6th Jul 2022 | |
| 2602:fb49::/36 | 268M × /64 | ARIN | 6th Jul 2022 | |
| 2602:fb4a::/40 | 16.8M × /64 | ARIN | 6th Jul 2022 | |
| 2602:fb4b::/40 | 16.8M × /64 | ARIN | 5th Jul 2022 | |
| 2602:fb4c::/36 | 268M × /64 | ARIN | 5th Jul 2022 | |
| 2602:fb4e::/40 | 16.8M × /64 | ARIN | 29th Jun 2022 | |
| 2602:fb4f::/40 | 16.8M × /64 | ARIN | 27th Jun 2022 | |
| 2602:fb55::/36 | 268M × /64 | ARIN | 23rd Jun 2022 | |
| 2602:fb63::/40 | 16.8M × /64 | ARIN | 27th May 2022 | |
| 2602:fb66::/40 | 16.8M × /64 | ARIN | 25th May 2022 | |
| 2602:fb69::/40 | 16.8M × /64 | ARIN | 20th May 2022 | |
| 2602:fb6b::/36 | 268M × /64 | ARIN | 18th May 2022 | |
| 2602:fb6c::/40 | 16.8M × /64 | ARIN | 17th May 2022 | |
| 2602:fb6f::/40 | 16.8M × /64 | ARIN | 11th May 2022 | |
| 2602:fb70::/40 | 16.8M × /64 | ARIN | 9th May 2022 | |
| 2602:fb71::/40 | 16.8M × /64 | ARIN | 6th May 2022 |