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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 |
|---|---|---|---|---|
| 2a11:69c0::/29 | 34.4B × /64 | RIPE NCC | 1st Oct 2021 | |
| 2a11:6b00::/29 | 34.4B × /64 | RIPE NCC | 2nd Aug 2021 | |
| 2a11:6c40::/29 | 34.4B × /64 | RIPE NCC | 4th Oct 2021 | |
| 2a11:6d00::/29 | 34.4B × /64 | RIPE NCC | 2nd Aug 2021 | |
| 2a11:6e40::/29 | 34.4B × /64 | RIPE NCC | 4th Oct 2021 | |
| 2a11:6e80::/29 | 34.4B × /64 | RIPE NCC | 23rd Aug 2021 | |
| 2a11:6ec0::/29 | 34.4B × /64 | RIPE NCC | 4th Oct 2021 | |
| 2a11:6f40::/29 | 34.4B × /64 | RIPE NCC | 4th Oct 2021 | |
| 2a11:6fc0::/29 | 34.4B × /64 | RIPE NCC | 4th Oct 2021 | |
| 2a11:7000::/29 | 34.4B × /64 | RIPE NCC | 6th Jul 2021 | |
| 2a11:700::/29 | 34.4B × /64 | RIPE NCC | 12th May 2021 | |
| 2a11:7040::/29 | 34.4B × /64 | RIPE NCC | 4th Oct 2021 | |
| 2a11:7080::/29 | 34.4B × /64 | RIPE NCC | 23rd Aug 2021 | |
| 2a11:7100::/29 | 34.4B × /64 | RIPE NCC | 3rd Aug 2021 | |
| 2a11:7140::/29 | 34.4B × /64 | RIPE NCC | 4th Oct 2021 | |
| 2a11:7180::/29 | 34.4B × /64 | RIPE NCC | 16th Oct 2026 | |
| 2a11:71c0::/29 | 34.4B × /64 | RIPE NCC | 4th Oct 2021 | |
| 2a11:7200::/30 | 17.2B × /64 | RIPE NCC | 20th Jul 2021 | |
| 2a11:7280::/29 | 34.4B × /64 | RIPE NCC | 23rd Aug 2021 | |
| 2a11:72c0::/29 | 34.4B × /64 | RIPE NCC | 4th Oct 2021 | |
| 2a11:7300::/29 | 34.4B × /64 | RIPE NCC | 3rd Aug 2021 | |
| 2a11:7380::/29 | 34.4B × /64 | RIPE NCC | 23rd Aug 2021 | |
| 2a11:73c0::/29 | 34.4B × /64 | RIPE NCC | 4th Oct 2021 | |
| 2a11:740::/29 | 34.4B × /64 | RIPE NCC | 1st Jul 2021 | |
| 2a11:7440::/29 | 34.4B × /64 | RIPE NCC | 4th Oct 2021 | |
| 2a11:7480::/29 | 34.4B × /64 | RIPE NCC | 23rd Aug 2021 | |
| 2a11:7580::/29 | 34.4B × /64 | RIPE NCC | 23rd Aug 2021 | |
| 2a11:7600::/29 | 34.4B × /64 | RIPE NCC | 20th Jul 2021 | |
| 2a11:7640::/29 | 34.4B × /64 | RIPE NCC | 5th Oct 2021 | |
| 2a11:7740::/29 | 34.4B × /64 | RIPE NCC | 5th Oct 2021 | |
| 2a11:7800::/29 | 34.4B × /64 | RIPE NCC | 7th Jul 2021 | |
| 2a11:7840::/29 | 34.4B × /64 | RIPE NCC | 5th Oct 2021 | |
| 2a11:7a80::/29 | 34.4B × /64 | RIPE NCC | 24th Aug 2021 | |
| 2a11:7b00::/29 | 34.4B × /64 | RIPE NCC | 3rd Aug 2021 | |
| 2a11:7b40::/29 | 34.4B × /64 | RIPE NCC | 24th Nov 2025 | |
| 2a11:7c40::/29 | 34.4B × /64 | RIPE NCC | 6th Oct 2021 | |
| 2a11:7d40::/29 | 34.4B × /64 | RIPE NCC | 6th Oct 2021 | |
| 2a11:7d80::/29 | 34.4B × /64 | RIPE NCC | 24th Aug 2021 | |
| 2a11:7dc0::/29 | 34.4B × /64 | RIPE NCC | 6th Oct 2021 | |
| 2a11:7e00::/29 | 34.4B × /64 | RIPE NCC | 20th Jul 2021 | |
| 2a11:7e80::/29 | 34.4B × /64 | RIPE NCC | 24th Aug 2021 | |
| 2a11:7f40::/29 | 34.4B × /64 | RIPE NCC | 6th Oct 2021 | |
| 2a11:7fc0::/29 | 34.4B × /64 | RIPE NCC | 6th Oct 2021 | |
| 2a11:8000::/32 | 4.3B × /64 | RIPE NCC | 5th Jul 2021 | |
| 2a11:800::/29 | 34.4B × /64 | RIPE NCC | 6th Oct 2022 | |
| 2a11:80::/29 | 34.4B × /64 | RIPE NCC | 14th May 2021 | |
| 2a11:80c0::/29 | 34.4B × /64 | RIPE NCC | 7th Oct 2021 | |
| 2a11:8140::/29 | 34.4B × /64 | RIPE NCC | 7th Oct 2021 | |
| 2a11:8180::/29 | 34.4B × /64 | RIPE NCC | 24th Aug 2021 | |
| 2a11:8200::/29 | 34.4B × /64 | RIPE NCC | 20th Jul 2021 |