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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 |
|---|---|---|---|---|
| 2a0d:4640::/29 | 34.4B × /64 | RIPE NCC | 29th Aug 2018 | |
| 2a0d:4680::/29 | 34.4B × /64 | RIPE NCC | 5th Feb 2018 | |
| 2a0d:46c0::/32 | 4.3B × /64 | RIPE NCC | 11th Jun 2021 | |
| 2a0d:4740::/29 | 34.4B × /64 | RIPE NCC | 30th Aug 2018 | |
| 2a0d:4780::/29 | 34.4B × /64 | RIPE NCC | 5th Feb 2018 | |
| 2a0d:47c0::/29 | 34.4B × /64 | RIPE NCC | 30th Aug 2018 | |
| 2a0d:4800::/29 | 34.4B × /64 | RIPE NCC | 29th Sept 2017 | |
| 2a0d:480::/29 | 34.4B × /64 | RIPE NCC | 25th Jan 2018 | |
| 2a0d:4880::/29 | 34.4B × /64 | RIPE NCC | 6th Feb 2018 | |
| 2a0d:48c0::/29 | 34.4B × /64 | RIPE NCC | 30th Aug 2018 | |
| 2a0d:49c0::/29 | 34.4B × /64 | RIPE NCC | 30th Aug 2018 | |
| 2a0d:4b80::/29 | 34.4B × /64 | RIPE NCC | 6th Feb 2018 | |
| 2a0d:4c00::/29 | 34.4B × /64 | RIPE NCC | 10th Oct 2017 | |
| 2a0d:4c0::/29 | 34.4B × /64 | RIPE NCC | 1st Aug 2018 | |
| 2a0d:4c80::/29 | 34.4B × /64 | RIPE NCC | 7th Feb 2018 | |
| 2a0d:4d00::/29 | 34.4B × /64 | RIPE NCC | 7th Apr 2026 | |
| 2a0d:4dc0::/32 | 4.3B × /64 | RIPE NCC | 31st Aug 2018 | |
| 2a0d:4e00::/29 | 34.4B × /64 | RIPE NCC | 30th Oct 2017 | |
| 2a0d:4e40::/29 | 34.4B × /64 | RIPE NCC | 31st Aug 2018 | |
| 2a0d:4e80::/29 | 34.4B × /64 | RIPE NCC | 7th Feb 2018 | |
| 2a0d:4f00::/29 | 34.4B × /64 | RIPE NCC | 29th Jul 2020 | |
| 2a0d:4f40::/32 | 4.3B × /64 | RIPE NCC | 3rd Sept 2018 | |
| 2a0d:4f80::/29 | 34.4B × /64 | RIPE NCC | 11th Jun 2021 | |
| 2a0d:500::/29 | 34.4B × /64 | RIPE NCC | 28th Nov 2017 | |
| 2a0d:50c0::/29 | 34.4B × /64 | RIPE NCC | 3rd Sept 2018 | |
| 2a0d:5180::/29 | 34.4B × /64 | RIPE NCC | 8th Feb 2018 | |
| 2a0d:51c0::/29 | 34.4B × /64 | RIPE NCC | 3rd Sept 2018 | |
| 2a0d:5200::/29 | 34.4B × /64 | RIPE NCC | 22nd Jan 2020 | |
| 2a0d:5240::/29 | 34.4B × /64 | RIPE NCC | 3rd Sept 2018 | |
| 2a0d:5340::/29 | 34.4B × /64 | RIPE NCC | 19th Aug 2019 | |
| 2a0d:53c0::/29 | 34.4B × /64 | RIPE NCC | 4th Sept 2018 | |
| 2a0d:5400::/29 | 34.4B × /64 | RIPE NCC | 10th Oct 2017 | |
| 2a0d:54c0::/32 | 4.3B × /64 | RIPE NCC | 5th Sept 2018 | |
| 2a0d:5500::/29 | 34.4B × /64 | RIPE NCC | 4th Dec 2017 | |
| 2a0d:5540::/29 | 34.4B × /64 | RIPE NCC | 5th Sept 2018 | |
| 2a0d:5580::/29 | 34.4B × /64 | RIPE NCC | 8th Feb 2018 | |
| 2a0d:5680::/29 | 34.4B × /64 | RIPE NCC | 9th Feb 2018 | |
| 2a0d:56c0::/29 | 34.4B × /64 | RIPE NCC | 6th Sept 2018 | |
| 2a0d:5740::/29 | 34.4B × /64 | RIPE NCC | 26th Aug 2026 | |
| 2a0d:5780::/29 | 34.4B × /64 | RIPE NCC | 9th Feb 2018 | |
| 2a0d:5840::/32 | 4.3B × /64 | RIPE NCC | 6th Sept 2018 | |
| 2a0d:5880::/29 | 34.4B × /64 | RIPE NCC | 9th Feb 2018 | |
| 2a0d:5a40::/29 | 34.4B × /64 | RIPE NCC | 7th Sept 2018 | |
| 2a0d:5a80::/29 | 34.4B × /64 | RIPE NCC | 9th Feb 2018 | |
| 2a0d:5b00::/29 | 34.4B × /64 | RIPE NCC | 15th Dec 2021 | |
| 2a0d:5b40::/29 | 34.4B × /64 | RIPE NCC | 7th Sept 2018 | |
| 2a0d:5c00::/29 | 34.4B × /64 | RIPE NCC | 22nd Oct 2019 | |
| 2a0d:5c40::/32 | 4.3B × /64 | RIPE NCC | 7th Sept 2018 | |
| 2a0d:5cc0::/29 | 34.4B × /64 | RIPE NCC | 10th Sept 2018 | |
| 2a0d:5d40::/32 | 4.3B × /64 | RIPE NCC | 10th Sept 2018 |