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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 the most unannounced blocks, largest first.
Unannounced blocks
85,256 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 2602:f8bb::/40 | 16.8M × /64 | ARIN |  MH | 7th Jun 2024 |
| 2602:f8bc::/40 | 16.8M × /64 | ARIN |  US | 6th Jun 2024 |
| 2602:f8bd::/40 | 16.8M × /64 | ARIN | US | 6th Jun 2024 |
| 2602:f8be::/40 | 16.8M × /64 | ARIN | US | 6th Jun 2024 |
| 2602:f8c1::/40 | 16.8M × /64 | ARIN | US | 5th Jun 2024 |
| 2602:f8c2::/40 | 16.8M × /64 | ARIN | US | 4th Jun 2024 |
| 2602:f8c5::/40 | 16.8M × /64 | ARIN | US | 4th Jun 2024 |
| 2602:f8c9::/40 | 16.8M × /64 | ARIN | US | 4th Jun 2024 |
| 2602:f8ca::/40 | 16.8M × /64 | ARIN | US | 4th Jun 2024 |
| 2602:f8cb::/40 | 16.8M × /64 | ARIN | US | 4th Jun 2024 |
| 2602:f8cc::/40 | 16.8M × /64 | ARIN | US | 4th Jun 2024 |
| 2602:f8cd::/40 | 16.8M × /64 | ARIN | US | 4th Jun 2024 |
| 2602:f8d0::/40 | 16.8M × /64 | ARIN |  CA | 3rd Jun 2024 |
| 2602:f8d2::/40 | 16.8M × /64 | ARIN | US | 3rd Jun 2024 |
| 2602:f8d7::/40 | 16.8M × /64 | ARIN | US | 30th May 2024 |
| 2602:f8d8::/40 | 16.8M × /64 | ARIN | US | 30th May 2024 |
| 2602:f8d9::/40 | 16.8M × /64 | ARIN | US | 30th May 2024 |
| 2602:f8db::/36 | 268M × /64 | ARIN | US | 29th May 2024 |
| 2602:f8dc::/40 | 16.8M × /64 | ARIN | US | 28th May 2024 |
| 2602:f8dd::/40 | 16.8M × /64 | ARIN | US | 28th May 2024 |
| 2602:f8df::/40 | 16.8M × /64 | ARIN | US | 24th May 2024 |
| 2602:f8e0::/40 | 16.8M × /64 | ARIN | US | 24th May 2024 |
| 2602:f8e1::/40 | 16.8M × /64 | ARIN | US | 23rd May 2024 |
| 2602:f8e2::/40 | 16.8M × /64 | ARIN | US | 23rd May 2024 |
| 2602:f8e3::/36 | 268M × /64 | ARIN | CA | 23rd May 2024 |
| 2602:f8e4::/40 | 16.8M × /64 | ARIN | US | 23rd May 2024 |
| 2602:f8e5::/40 | 16.8M × /64 | ARIN | US | 23rd May 2024 |
| 2602:f8e6::/40 | 16.8M × /64 | ARIN | US | 22nd May 2024 |
| 2602:f8e8::/40 | 16.8M × /64 | ARIN | US | 21st May 2024 |
| 2602:f8eb::/36 | 268M × /64 | ARIN | US | 17th May 2024 |
| 2602:f8ec::/40 | 16.8M × /64 | ARIN | US | 14th Jan 2026 |
| 2602:f8ed::/40 | 16.8M × /64 | ARIN | US | 16th May 2024 |
| 2602:f8f0::/36 | 268M × /64 | ARIN | US | 16th May 2024 |
| 2602:f8f2::/40 | 16.8M × /64 | ARIN | US | 13th May 2024 |
| 2602:f8f3::/40 | 16.8M × /64 | ARIN | US | 13th May 2024 |
| 2602:f8f4::/40 | 16.8M × /64 | ARIN |  TH | 10th May 2024 |
| 2602:f8f5::/36 | 268M × /64 | ARIN | US | 10th May 2024 |
| 2602:f8f6::/40 | 16.8M × /64 | ARIN | US | 10th May 2024 |
| 2602:f8f8::/40 | 16.8M × /64 | ARIN | TH | 7th May 2024 |
| 2602:f8fa::/40 | 16.8M × /64 | ARIN |  MY | 7th May 2024 |
| 2602:f8fb::/40 | 16.8M × /64 | ARIN | TH | 7th May 2024 |
| 2602:f8fc::/36 | 268M × /64 | ARIN | US | 6th May 2024 |
| 2602:f8fe::/40 | 16.8M × /64 | ARIN |  SG | 3rd May 2024 |
| 2602:f900::/40 | 16.8M × /64 | ARIN | US | 3rd May 2024 |
| 2602:f902::/40 | 16.8M × /64 | ARIN | SG | 2nd May 2024 |
| 2602:f904::/40 | 16.8M × /64 | ARIN | US | 2nd May 2024 |
| 2602:f90d::/36 | 268M × /64 | ARIN | US | 25th Apr 2024 |
| 2602:f914::/40 | 16.8M × /64 | ARIN | US | 22nd Apr 2024 |
| 2602:f917::/40 | 16.8M × /64 | ARIN | US | 15th May 2026 |
| 2602:f91b::/40 | 16.8M × /64 | ARIN | US | 17th Apr 2024 |