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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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.
Browse by registry
Browse by country
Countries with unannounced space registered through ARIN, largest first.
Unannounced blocks registered through ARIN
30,449 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 2602:f7df::/40 | 16.8M × /64 | ARIN |  US | 8th Oct 2024 |
| 2602:f7e4::/40 | 16.8M × /64 | ARIN | US | 7th Oct 2024 |
| 2602:f7e5::/40 | 16.8M × /64 | ARIN | US | 7th Oct 2024 |
| 2602:f7e6::/36 | 268M × /64 | ARIN | US | 7th Oct 2024 |
| 2602:f7e8::/36 | 268M × /64 | ARIN | US | 4th Oct 2024 |
| 2602:f7ea::/40 | 16.8M × /64 | ARIN | US | 4th Oct 2024 |
| 2602:f7eb::/40 | 16.8M × /64 | ARIN | US | 4th Oct 2024 |
| 2602:f7ed::/40 | 16.8M × /64 | ARIN | US | 3rd Oct 2024 |
| 2602:f7f1::/40 | 16.8M × /64 | ARIN | US | 2nd Oct 2024 |
| 2602:f7f2::/36 | 268M × /64 | ARIN | US | 1st Oct 2024 |
| 2602:f7f3::/40 | 16.8M × /64 | ARIN | US | 1st Oct 2024 |
| 2602:f7f4::/36 | 268M × /64 | ARIN |  CA | 27th Sept 2024 |
| 2602:f7f5::/36 | 268M × /64 | ARIN | US | 26th Sept 2024 |
| 2602:f7f9::/40 | 16.8M × /64 | ARIN | US | 24th Sept 2024 |
| 2602:f7fa::/40 | 16.8M × /64 | ARIN | US | 20th Sept 2024 |
| 2602:f7fd::/36 | 268M × /64 | ARIN | US | 17th Sept 2024 |
| 2602:f801::/36 | 268M × /64 | ARIN | US | 12th Sept 2024 |
| 2602:f807::/40 | 16.8M × /64 | ARIN | US | 9th Sept 2024 |
| 2602:f808::/40 | 16.8M × /64 | ARIN | US | 9th Sept 2024 |
| 2602:f809::/36 | 268M × /64 | ARIN | US | 6th Sept 2024 |
| 2602:f80a::/40 | 16.8M × /64 | ARIN | US | 6th Sept 2024 |
| 2602:f80c::/40 | 16.8M × /64 | ARIN | US | 6th Sept 2024 |
| 2602:f80e::/40 | 16.8M × /64 | ARIN | US | 6th Sept 2024 |
| 2602:f80f::/40 | 16.8M × /64 | ARIN | US | 6th Sept 2024 |
| 2602:f810::/40 | 16.8M × /64 | ARIN | US | 5th Sept 2024 |
| 2602:f811::/40 | 16.8M × /64 | ARIN | US | 5th Sept 2024 |
| 2602:f814::/36 | 268M × /64 | ARIN | US | 4th Sept 2024 |
| 2602:f817::/40 | 16.8M × /64 | ARIN | US | 3rd Sept 2024 |
| 2602:f818::/40 | 16.8M × /64 | ARIN | US | 3rd Sept 2024 |
| 2602:f819::/40 | 16.8M × /64 | ARIN | US | 3rd Sept 2024 |
| 2602:f81a::/40 | 16.8M × /64 | ARIN | US | 3rd Sept 2024 |
| 2602:f81b::/40 | 16.8M × /64 | ARIN | US | 3rd Sept 2024 |
| 2602:f81d::/40 | 16.8M × /64 | ARIN | US | 30th Aug 2024 |
| 2602:f81e::/40 | 16.8M × /64 | ARIN | US | 30th Aug 2024 |
| 2602:f81f::/40 | 16.8M × /64 | ARIN | US | 30th Aug 2024 |
| 2602:f820::/40 | 16.8M × /64 | ARIN | US | 30th Aug 2024 |
| 2602:f823::/40 | 16.8M × /64 | ARIN | US | 30th Aug 2024 |
| 2602:f82a::/40 | 16.8M × /64 | ARIN | US | 27th Aug 2024 |
| 2602:f82b::/40 | 16.8M × /64 | ARIN | US | 27th Aug 2024 |
| 2602:f82c::/40 | 16.8M × /64 | ARIN | US | 26th Aug 2024 |
| 2602:f82f::/36 | 268M × /64 | ARIN | US | 22nd Aug 2024 |
| 2602:f832::/40 | 16.8M × /64 | ARIN |  SG | 21st Aug 2024 |
| 2602:f833::/40 | 16.8M × /64 | ARIN |  MY | 21st Aug 2024 |
| 2602:f834::/40 | 16.8M × /64 | ARIN | SG | 21st Aug 2024 |
| 2602:f835::/36 | 268M × /64 | ARIN | US | 21st Aug 2024 |
| 2602:f837::/40 | 16.8M × /64 | ARIN | US | 20th Aug 2024 |
| 2602:f838::/40 | 16.8M × /64 | ARIN |  PH | 19th Aug 2024 |
| 2602:f83e::/40 | 16.8M × /64 | ARIN | US | 15th Aug 2024 |
| 2602:f83f::/40 | 16.8M × /64 | ARIN | US | 15th Aug 2024 |
| 2602:f840::/36 | 268M × /64 | ARIN |  JP | 14th Aug 2024 |