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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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
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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:f842::/36 | 268M × /64 | ARIN |  US | 14th Aug 2024 |
| 2602:f848::/40 | 16.8M × /64 | ARIN | US | 13th Aug 2024 |
| 2602:f84b::/36 | 268M × /64 | ARIN | US | 9th Aug 2024 |
| 2602:f84c::/40 | 16.8M × /64 | ARIN | US | 8th Aug 2024 |
| 2602:f84d::/40 | 16.8M × /64 | ARIN | US | 8th Aug 2024 |
| 2602:f84f::/40 | 16.8M × /64 | ARIN | US | 6th Aug 2024 |
| 2602:f850::/40 | 16.8M × /64 | ARIN | US | 6th Aug 2024 |
| 2602:f851::/36 | 268M × /64 | ARIN | US | 5th Aug 2024 |
| 2602:f853::/40 | 16.8M × /64 | ARIN | US | 5th Aug 2024 |
| 2602:f854::/40 | 16.8M × /64 | ARIN | US | 2nd Aug 2024 |
| 2602:f858::/36 | 268M × /64 | ARIN | US | 1st Aug 2024 |
| 2602:f859::/40 | 16.8M × /64 | ARIN | US | 31st Jul 2024 |
| 2602:f85a::/44 | 1M × /64 | ARIN | US | 31st Jul 2024 |
| 2602:f862::/40 | 16.8M × /64 | ARIN | US | 29th Jul 2024 |
| 2602:f863::/40 | 16.8M × /64 | ARIN | US | 29th Jul 2024 |
| 2602:f867::/36 | 268M × /64 | ARIN | US | 26th Jul 2024 |
| 2602:f868::/36 | 268M × /64 | ARIN | US | 25th Jul 2024 |
| 2602:f86a::/40 | 16.8M × /64 | ARIN | US | 24th Jul 2024 |
| 2602:f86d::/40 | 16.8M × /64 | ARIN | US | 24th Jul 2024 |
| 2602:f875::/36 | 268M × /64 | ARIN | US | 17th Jul 2024 |
| 2602:f876::/40 | 16.8M × /64 | ARIN | US | 16th Jul 2024 |
| 2602:f879::/40 | 16.8M × /64 | ARIN | US | 12th Jul 2024 |
| 2602:f87b::/36 | 268M × /64 | ARIN |  CA | 9th Jul 2024 |
| 2602:f87c::/40 | 16.8M × /64 | ARIN | US | 9th Jul 2024 |
| 2602:f87e::/40 | 16.8M × /64 | ARIN | US | 2nd Jul 2024 |
| 2602:f880::/40 | 16.8M × /64 | ARIN | US | 1st Jul 2024 |
| 2602:f883::/40 | 16.8M × /64 | ARIN | US | 28th Jun 2024 |
| 2602:f884::/36 | 268M × /64 | ARIN | US | 28th Jun 2024 |
| 2602:f886::/36 | 268M × /64 | ARIN | US | 28th Jun 2024 |
| 2602:f887::/40 | 16.8M × /64 | ARIN | US | 27th Jun 2024 |
| 2602:f88d::/40 | 16.8M × /64 | ARIN | US | 26th Jun 2024 |
| 2602:f88e::/40 | 16.8M × /64 | ARIN | US | 25th Jun 2024 |
| 2602:f890::/40 | 16.8M × /64 | ARIN | US | 24th Jun 2024 |
| 2602:f891::/40 | 16.8M × /64 | ARIN | US | 21st Jun 2024 |
| 2602:f893::/40 | 16.8M × /64 | ARIN | US | 20th Jun 2024 |
| 2602:f896::/40 | 16.8M × /64 | ARIN | US | 20th Jun 2024 |
| 2602:f898::/40 | 16.8M × /64 | ARIN | US | 18th Jun 2024 |
| 2602:f89a::/40 | 16.8M × /64 | ARIN | US | 17th Jun 2024 |
| 2602:f89b::/40 | 16.8M × /64 | ARIN | US | 17th Jun 2024 |
| 2602:f89d::/40 | 16.8M × /64 | ARIN | US | 14th Jun 2024 |
| 2602:f89e::/40 | 16.8M × /64 | ARIN | US | 14th Jun 2024 |
| 2602:f89f::/40 | 16.8M × /64 | ARIN | US | 14th Jun 2024 |
| 2602:f8a0::/40 | 16.8M × /64 | ARIN | US | 14th Jun 2024 |
| 2602:f8a5::/40 | 16.8M × /64 | ARIN | US | 13th Jun 2024 |
| 2602:f8a6::/40 | 16.8M × /64 | ARIN | US | 13th Jun 2024 |
| 2602:f8a9::/40 | 16.8M × /64 | ARIN | CA | 12th Jun 2024 |
| 2602:f8ac::/40 | 16.8M × /64 | ARIN | US | 11th Jun 2024 |
| 2602:f8ad::/36 | 268M × /64 | ARIN | US | 11th Jun 2024 |
| 2602:f8af::/40 | 16.8M × /64 | ARIN | US | 10th Jun 2024 |
| 2602:f8b2::/40 | 16.8M × /64 | ARIN | US | 10th Jun 2024 |