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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 |
|---|---|---|---|---|
| 2a07:280::/29 | 34.4B × /64 | RIPE NCC | 4th Feb 2016 | |
| 2a07:2880::/29 | 34.4B × /64 | RIPE NCC | 22nd May 2020 | |
| 2a07:28c0::/29 | 34.4B × /64 | RIPE NCC | 7th Mar 2016 | |
| 2a07:2a40::/29 | 34.4B × /64 | RIPE NCC | 8th Mar 2016 | |
| 2a07:2ac0::/29 | 34.4B × /64 | RIPE NCC | 8th Mar 2016 | |
| 2a07:2b00::/29 | 34.4B × /64 | RIPE NCC | 8th Mar 2016 | |
| 2a07:2b40::/29 | 34.4B × /64 | RIPE NCC | 8th Mar 2016 | |
| 2a07:2b80::/29 | 34.4B × /64 | RIPE NCC | 11th Mar 2026 | |
| 2a07:2bc0::/29 | 34.4B × /64 | RIPE NCC | 8th Mar 2016 | |
| 2a07:2c80::/29 | 34.4B × /64 | RIPE NCC | 9th Mar 2016 | |
| 2a07:2cc0::/29 | 34.4B × /64 | RIPE NCC | 9th Mar 2016 | |
| 2a07:2d00::/29 | 34.4B × /64 | RIPE NCC | 9th Mar 2016 | |
| 2a07:2d40::/29 | 34.4B × /64 | RIPE NCC | 9th Mar 2016 | |
| 2a07:2dc0::/29 | 34.4B × /64 | RIPE NCC | 9th Mar 2016 | |
| 2a07:2e00::/29 | 34.4B × /64 | RIPE NCC | 9th Mar 2016 | |
| 2a07:2f80::/29 | 34.4B × /64 | RIPE NCC | 10th Mar 2016 | |
| 2a07:2fc0::/29 | 34.4B × /64 | RIPE NCC | 10th Mar 2016 | |
| 2a07:3000::/29 | 34.4B × /64 | RIPE NCC | 10th Mar 2016 | |
| 2a07:300::/29 | 34.4B × /64 | RIPE NCC | 21st Apr 2023 | |
| 2a07:30c0::/29 | 34.4B × /64 | RIPE NCC | 10th Mar 2016 | |
| 2a07:3100::/29 | 34.4B × /64 | RIPE NCC | 10th Mar 2016 | |
| 2a07:3180::/29 | 34.4B × /64 | RIPE NCC | 10th Mar 2016 | |
| 2a07:3240::/29 | 34.4B × /64 | RIPE NCC | 11th Mar 2016 | |
| 2a07:3280::/29 | 34.4B × /64 | RIPE NCC | 11th Mar 2016 | |
| 2a07:32c0::/29 | 34.4B × /64 | RIPE NCC | 11th Mar 2016 | |
| 2a07:3380::/29 | 34.4B × /64 | RIPE NCC | 9th Sept 2021 | |
| 2a07:3400::/29 | 34.4B × /64 | RIPE NCC | 14th Mar 2016 | |
| 2a07:34c0::/29 | 34.4B × /64 | RIPE NCC | 22nd May 2020 | |
| 2a07:3540::/29 | 34.4B × /64 | RIPE NCC | 15th Mar 2016 | |
| 2a07:3600::/29 | 34.4B × /64 | RIPE NCC | 15th Mar 2016 | |
| 2a07:3680::/29 | 34.4B × /64 | RIPE NCC | 16th Mar 2016 | |
| 2a07:3780::/29 | 34.4B × /64 | RIPE NCC | 16th Mar 2016 | |
| 2a07:3800::/29 | 34.4B × /64 | RIPE NCC | 16th Mar 2016 | |
| 2a07:380::/29 | 34.4B × /64 | RIPE NCC | 5th Feb 2016 | |
| 2a07:3840::/29 | 34.4B × /64 | RIPE NCC | 17th Mar 2016 | |
| 2a07:3880::/29 | 34.4B × /64 | RIPE NCC | 17th Mar 2016 | |
| 2a07:38c0::/29 | 34.4B × /64 | RIPE NCC | 17th Mar 2016 | |
| 2a07:3980::/29 | 34.4B × /64 | RIPE NCC | 17th Mar 2016 | |
| 2a07:3a00::/29 | 34.4B × /64 | RIPE NCC | 18th Mar 2016 | |
| 2a07:3a40::/32 | 4.3B × /64 | RIPE NCC | 18th Jun 2019 | |
| 2a07:3a80::/29 | 34.4B × /64 | RIPE NCC | 18th Mar 2016 | |
| 2a07:3b40::/29 | 34.4B × /64 | RIPE NCC | 21st Mar 2016 | |
| 2a07:3c40::/29 | 34.4B × /64 | RIPE NCC | 21st Mar 2016 | |
| 2a07:3cc0::/29 | 34.4B × /64 | RIPE NCC | 29th Jun 2018 | |
| 2a07:3d40::/29 | 34.4B × /64 | RIPE NCC | 18th Jun 2019 | |
| 2a07:3dc0::/29 | 34.4B × /64 | RIPE NCC | 25th May 2020 | |
| 2a07:3e40::/29 | 34.4B × /64 | RIPE NCC | 22nd Mar 2016 | |
| 2a07:3e80::/29 | 34.4B × /64 | RIPE NCC | 22nd Mar 2016 | |
| 2a07:3f00::/29 | 34.4B × /64 | RIPE NCC | 24th Apr 2023 | |
| 2a07:3f40::/29 | 34.4B × /64 | RIPE NCC | 23rd Mar 2016 |