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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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
84,525 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 2a09:2d40::/29 | 34.4B × /64 | RIPE NCC | 23rd Jan 2019 | |
| 2a09:2d80::/29 | 34.4B × /64 | RIPE NCC | 3rd Dec 2018 | |
| 2a09:2e00::/29 | 34.4B × /64 | RIPE NCC | 7th Nov 2018 | |
| 2a09:2e40::/29 | 34.4B × /64 | RIPE NCC | 24th Jan 2019 | |
| 2a09:2ec0::/29 | 34.4B × /64 | RIPE NCC | 24th Jan 2019 | |
| 2a09:2f40::/29 | 34.4B × /64 | RIPE NCC | 24th Jan 2019 | |
| 2a09:2fc0::/29 | 34.4B × /64 | RIPE NCC | 24th Jan 2019 | |
| 2a09:3000::/32 | 4.3B × /64 | RIPE NCC | 31st Oct 2018 | |
| 2a09:3040::/29 | 34.4B × /64 | RIPE NCC | 24th Jan 2019 | |
| 2a09:3080::/29 | 34.4B × /64 | RIPE NCC | 3rd Dec 2018 | |
| 2a09:3100::/29 | 34.4B × /64 | RIPE NCC | 15th Nov 2018 | |
| 2a09:3140::/29 | 34.4B × /64 | RIPE NCC | 25th Jan 2019 | |
| 2a09:3200::/29 | 34.4B × /64 | RIPE NCC | 7th Nov 2018 | |
| 2a09:3240::/32 | 4.3B × /64 | RIPE NCC | 25th Jan 2019 | |
| 2a09:32c0::/29 | 34.4B × /64 | RIPE NCC | 25th Jan 2019 | |
| 2a09:3400::/29 | 34.4B × /64 | RIPE NCC | 26th Apr 2023 | |
| 2a09:3540::/29 | 34.4B × /64 | RIPE NCC | 25th Jan 2019 | |
| 2a09:3600::/29 | 34.4B × /64 | RIPE NCC | 24th Mar 2026 | |
| 2a09:3640::/29 | 34.4B × /64 | RIPE NCC | 28th Jan 2019 | |
| 2a09:3680::/29 | 34.4B × /64 | RIPE NCC | 6th May 2024 | |
| 2a09:3740::/29 | 34.4B × /64 | RIPE NCC | 29th Jan 2019 | |
| 2a09:3840::/29 | 34.4B × /64 | RIPE NCC | 29th Jan 2019 | |
| 2a09:3980::/32 | 4.3B × /64 | RIPE NCC | 7th Jun 2021 | |
| 2a09:39c0::/29 | 34.4B × /64 | RIPE NCC | 29th Jan 2019 | |
| 2a09:3a40::/29 | 34.4B × /64 | RIPE NCC | 30th Jan 2019 | |
| 2a09:3bc0::/29 | 34.4B × /64 | RIPE NCC | 30th Jan 2019 | |
| 2a09:3c40::/29 | 34.4B × /64 | RIPE NCC | 30th Jan 2019 | |
| 2a09:3e00::/29 | 34.4B × /64 | RIPE NCC | 7th Nov 2018 | |
| 2a09:3e80::/29 | 34.4B × /64 | RIPE NCC | 4th Dec 2018 | |
| 2a09:3f40::/29 | 34.4B × /64 | RIPE NCC | 1st Feb 2019 | |
| 2a09:4080::/29 | 34.4B × /64 | RIPE NCC | 4th Dec 2018 | |
| 2a09:4140::/29 | 34.4B × /64 | RIPE NCC | 4th Feb 2019 | |
| 2a09:4180::/29 | 34.4B × /64 | RIPE NCC | 4th Dec 2018 | |
| 2a09:4200::/29 | 34.4B × /64 | RIPE NCC | 7th Nov 2018 | |
| 2a09:4240::/32 | 4.3B × /64 | RIPE NCC | 4th Feb 2019 | |
| 2a09:42c0::/29 | 34.4B × /64 | RIPE NCC | 4th Feb 2019 | |
| 2a09:4340::/29 | 34.4B × /64 | RIPE NCC | 4th Feb 2019 | |
| 2a09:440::/29 | 34.4B × /64 | RIPE NCC | 23rd Jun 2021 | |
| 2a09:44c0::/29 | 34.4B × /64 | RIPE NCC | 5th Jun 2026 | |
| 2a09:4500::/29 | 34.4B × /64 | RIPE NCC | 15th Nov 2018 | |
| 2a09:4540::/29 | 34.4B × /64 | RIPE NCC | 5th Feb 2019 | |
| 2a09:4580::/29 | 34.4B × /64 | RIPE NCC | 5th Dec 2018 | |
| 2a09:45c0::/32 | 4.3B × /64 | RIPE NCC | 5th Feb 2019 | |
| 2a09:4600::/29 | 34.4B × /64 | RIPE NCC | 7th Nov 2018 | |
| 2a09:4640::/29 | 34.4B × /64 | RIPE NCC | 5th Feb 2019 | |
| 2a09:4680::/29 | 34.4B × /64 | RIPE NCC | 5th Dec 2018 | |
| 2a09:46c0::/29 | 34.4B × /64 | RIPE NCC | 5th Feb 2019 | |
| 2a09:4800::/29 | 34.4B × /64 | RIPE NCC | 1st Nov 2018 | |
| 2a09:4840::/32 | 4.3B × /64 | RIPE NCC | 5th Feb 2019 | |
| 2a09:4880::/32 | 4.3B × /64 | RIPE NCC | 5th Dec 2018 |