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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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
84,545 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 2a09:5d80::/29 | 34.4B × /64 | RIPE NCC | 10th Dec 2018 | |
| 2a09:5e80::/29 | 34.4B × /64 | RIPE NCC | 6th Jun 2025 | |
| 2a09:5f00::/29 | 34.4B × /64 | RIPE NCC | 16th Nov 2018 | |
| 2a09:6040::/29 | 34.4B × /64 | RIPE NCC | 12th Feb 2019 | |
| 2a09:6100::/29 | 34.4B × /64 | RIPE NCC | 16th Nov 2018 | |
| 2a09:6180::/29 | 34.4B × /64 | RIPE NCC | 11th Dec 2018 | |
| 2a09:62c0::/29 | 34.4B × /64 | RIPE NCC | 12th Feb 2019 | |
| 2a09:6300::/32 | 4.3B × /64 | RIPE NCC | 16th Nov 2018 | |
| 2a09:640::/29 | 34.4B × /64 | RIPE NCC | 2nd Jan 2019 | |
| 2a09:6480::/29 | 34.4B × /64 | RIPE NCC | 11th Dec 2018 | |
| 2a09:64c0::/29 | 34.4B × /64 | RIPE NCC | 12th Feb 2019 | |
| 2a09:6540::/29 | 34.4B × /64 | RIPE NCC | 12th Feb 2019 | |
| 2a09:6600::/29 | 34.4B × /64 | RIPE NCC | 18th May 2021 | |
| 2a09:6680::/29 | 34.4B × /64 | RIPE NCC | 8th Jun 2026 | |
| 2a09:66c0::/29 | 34.4B × /64 | RIPE NCC | 10th Jul 2025 | |
| 2a09:6700::/29 | 34.4B × /64 | RIPE NCC | 16th Nov 2018 | |
| 2a09:6740::/29 | 34.4B × /64 | RIPE NCC | 13th Feb 2019 | |
| 2a09:67c0::/29 | 34.4B × /64 | RIPE NCC | 8th Dec 2025 | |
| 2a09:6800::/29 | 34.4B × /64 | RIPE NCC | 1st Nov 2018 | |
| 2a09:680::/29 | 34.4B × /64 | RIPE NCC | 27th Nov 2018 | |
| 2a09:69c0::/29 | 34.4B × /64 | RIPE NCC | 13th Feb 2019 | |
| 2a09:6a00::/29 | 34.4B × /64 | RIPE NCC | 9th Nov 2018 | |
| 2a09:6a40::/29 | 34.4B × /64 | RIPE NCC | 13th Feb 2019 | |
| 2a09:6ac0::/29 | 34.4B × /64 | RIPE NCC | 13th Feb 2019 | |
| 2a09:6b80::/29 | 34.4B × /64 | RIPE NCC | 12th Dec 2018 | |
| 2a09:6c00::/29 | 34.4B × /64 | RIPE NCC | 5th Nov 2018 | |
| 2a09:6c80::/32 | 4.3B × /64 | RIPE NCC | 12th Dec 2018 | |
| 2a09:6e00::/29 | 34.4B × /64 | RIPE NCC | 9th Nov 2018 | |
| 2a09:6f00::/29 | 34.4B × /64 | RIPE NCC | 18th May 2021 | |
| 2a09:6fc0::/29 | 34.4B × /64 | RIPE NCC | 15th Feb 2019 | |
| 2a09:7040::/29 | 34.4B × /64 | RIPE NCC | 15th Feb 2019 | |
| 2a09:7080::/29 | 34.4B × /64 | RIPE NCC | 12th Dec 2018 | |
| 2a09:70c0::/32 | 4.3B × /64 | RIPE NCC | 15th Feb 2019 | |
| 2a09:7140::/29 | 34.4B × /64 | RIPE NCC | 8th Jun 2026 | |
| 2a09:7240::/29 | 34.4B × /64 | RIPE NCC | 15th Feb 2019 | |
| 2a09:7280::/32 | 4.3B × /64 | RIPE NCC | 13th Dec 2018 | |
| 2a09:7380::/29 | 34.4B × /64 | RIPE NCC | 19th Jan 2026 | |
| 2a09:7400::/32 | 4.3B × /64 | RIPE NCC | 5th Nov 2018 | |
| 2a09:7480::/29 | 34.4B × /64 | RIPE NCC | 11th Oct 2021 | |
| 2a09:7540::/29 | 34.4B × /64 | RIPE NCC | 18th Feb 2019 | |
| 2a09:7580::/29 | 34.4B × /64 | RIPE NCC | 13th Dec 2018 | |
| 2a09:7600::/32 | 4.3B × /64 | RIPE NCC | 18th Dec 2025 | |
| 2a09:7740::/29 | 34.4B × /64 | RIPE NCC | 18th Feb 2019 | |
| 2a09:7780::/29 | 34.4B × /64 | RIPE NCC | 13th Dec 2018 | |
| 2a09:77c0::/29 | 34.4B × /64 | RIPE NCC | 18th Feb 2019 | |
| 2a09:7840::/29 | 34.4B × /64 | RIPE NCC | 18th Feb 2019 | |
| 2a09:78c0::/29 | 34.4B × /64 | RIPE NCC | 19th Feb 2019 | |
| 2a09:7940::/29 | 34.4B × /64 | RIPE NCC | 19th Feb 2019 | |
| 2a09:79c0::/29 | 34.4B × /64 | RIPE NCC | 19th Feb 2019 | |
| 2a09:7a80::/29 | 34.4B × /64 | RIPE NCC | 13th Dec 2018 |