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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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
84,555 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 2a11:8240::/29 | 34.4B × /64 | RIPE NCC | 7th Oct 2021 | |
| 2a11:82c0::/29 | 34.4B × /64 | RIPE NCC | 7th Oct 2021 | |
| 2a11:8380::/29 | 34.4B × /64 | RIPE NCC | 24th Aug 2021 | |
| 2a11:8540::/29 | 34.4B × /64 | RIPE NCC | 7th Oct 2021 | |
| 2a11:85c0::/29 | 34.4B × /64 | RIPE NCC | 7th Oct 2021 | |
| 2a11:8680::/29 | 34.4B × /64 | RIPE NCC | 24th Aug 2021 | |
| 2a11:8780::/29 | 34.4B × /64 | RIPE NCC | 24th Aug 2021 | |
| 2a11:87c0::/29 | 34.4B × /64 | RIPE NCC | 24th Nov 2025 | |
| 2a11:8800::/29 | 34.4B × /64 | RIPE NCC | 7th Jul 2021 | |
| 2a11:880::/29 | 34.4B × /64 | RIPE NCC | 14th May 2021 | |
| 2a11:8840::/29 | 34.4B × /64 | RIPE NCC | 7th Oct 2021 | |
| 2a11:88c0::/29 | 34.4B × /64 | RIPE NCC | 7th Oct 2021 | |
| 2a11:8a00::/29 | 34.4B × /64 | RIPE NCC | 20th Jul 2021 | |
| 2a11:8a40::/29 | 34.4B × /64 | RIPE NCC | 7th Oct 2021 | |
| 2a11:8ac0::/29 | 34.4B × /64 | RIPE NCC | 7th Oct 2021 | |
| 2a11:8b00::/29 | 34.4B × /64 | RIPE NCC | 4th Aug 2021 | |
| 2a11:8b40::/29 | 34.4B × /64 | RIPE NCC | 7th Oct 2021 | |
| 2a11:8bc0::/29 | 34.4B × /64 | RIPE NCC | 7th Oct 2021 | |
| 2a11:8c00::/29 | 34.4B × /64 | RIPE NCC | 12th Jul 2021 | |
| 2a11:8c0::/29 | 34.4B × /64 | RIPE NCC | 2nd Jul 2021 | |
| 2a11:8c40::/29 | 34.4B × /64 | RIPE NCC | 7th Oct 2021 | |
| 2a11:8d00::/29 | 34.4B × /64 | RIPE NCC | 4th Aug 2021 | |
| 2a11:8e40::/29 | 34.4B × /64 | RIPE NCC | 8th Oct 2021 | |
| 2a11:8e80::/29 | 34.4B × /64 | RIPE NCC | 25th Aug 2021 | |
| 2a11:9000::/29 | 34.4B × /64 | RIPE NCC | 6th Jul 2021 | |
| 2a11:9040::/29 | 34.4B × /64 | RIPE NCC | 8th Oct 2021 | |
| 2a11:9140::/29 | 34.4B × /64 | RIPE NCC | 8th Oct 2021 | |
| 2a11:91c0::/29 | 34.4B × /64 | RIPE NCC | 8th Oct 2021 | |
| 2a11:9240::/29 | 34.4B × /64 | RIPE NCC | 8th Oct 2021 | |
| 2a11:92c0::/29 | 34.4B × /64 | RIPE NCC | 8th Oct 2021 | |
| 2a11:9380::/29 | 34.4B × /64 | RIPE NCC | 25th Aug 2021 | |
| 2a11:93c0::/29 | 34.4B × /64 | RIPE NCC | 25th Nov 2025 | |
| 2a11:9480::/29 | 34.4B × /64 | RIPE NCC | 25th Aug 2021 | |
| 2a11:94c0::/29 | 34.4B × /64 | RIPE NCC | 8th Oct 2021 | |
| 2a11:9540::/32 | 4.3B × /64 | RIPE NCC | 11th Oct 2021 | |
| 2a11:95c0::/29 | 34.4B × /64 | RIPE NCC | 11th Oct 2021 | |
| 2a11:9740::/29 | 34.4B × /64 | RIPE NCC | 11th Oct 2021 | |
| 2a11:9780::/29 | 34.4B × /64 | RIPE NCC | 25th Aug 2021 | |
| 2a11:980::/29 | 34.4B × /64 | RIPE NCC | 14th May 2021 | |
| 2a11:9840::/29 | 34.4B × /64 | RIPE NCC | 11th Oct 2021 | |
| 2a11:98c0::/29 | 34.4B × /64 | RIPE NCC | 11th Oct 2021 | |
| 2a11:9900::/29 | 34.4B × /64 | RIPE NCC | 5th Aug 2021 | |
| 2a11:9980::/29 | 34.4B × /64 | RIPE NCC | 7th Oct 2022 | |
| 2a11:9a00::/29 | 34.4B × /64 | RIPE NCC | 20th Jul 2021 | |
| 2a11:9b00::/29 | 34.4B × /64 | RIPE NCC | 16th Oct 2026 | |
| 2a11:9b40::/29 | 34.4B × /64 | RIPE NCC | 12th Oct 2021 | |
| 2a11:9bc0::/29 | 34.4B × /64 | RIPE NCC | 12th Oct 2021 | |
| 2a11:9cc0::/29 | 34.4B × /64 | RIPE NCC | 12th Oct 2021 | |
| 2a11:9d00::/29 | 34.4B × /64 | RIPE NCC | 5th Aug 2021 | |
| 2a11:9d80::/29 | 34.4B × /64 | RIPE NCC | 16th Oct 2026 |