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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 |
|---|---|---|---|---|
| 2a0d:f840::/29 | 34.4B × /64 | RIPE NCC | 29th Oct 2018 | |
| 2a0d:f880::/29 | 34.4B × /64 | RIPE NCC | 13th Mar 2018 | |
| 2a0d:f980::/29 | 34.4B × /64 | RIPE NCC | 13th Mar 2018 | |
| 2a0d:fa00::/29 | 34.4B × /64 | RIPE NCC | 6th Nov 2017 | |
| 2a0d:fa40::/29 | 34.4B × /64 | RIPE NCC | 29th Oct 2018 | |
| 2a0d:fa80::/29 | 34.4B × /64 | RIPE NCC | 13th Mar 2018 | |
| 2a0d:fb80::/29 | 34.4B × /64 | RIPE NCC | 13th Mar 2018 | |
| 2a0d:fbc0::/29 | 34.4B × /64 | RIPE NCC | 30th Oct 2018 | |
| 2a0d:fc00::/29 | 34.4B × /64 | RIPE NCC | 16th Oct 2017 | |
| 2a0d:fc40::/29 | 34.4B × /64 | RIPE NCC | 30th Oct 2018 | |
| 2a0d:fc80::/29 | 34.4B × /64 | RIPE NCC | 13th Mar 2018 | |
| 2a0d:fd00::/32 | 4.3B × /64 | RIPE NCC | 28th Nov 2019 | |
| 2a0d:fe00::/29 | 34.4B × /64 | RIPE NCC | 6th Nov 2017 | |
| 2a0d:fe40::/32 | 4.3B × /64 | RIPE NCC | 30th Oct 2018 | |
| 2a0d:ff80::/32 | 4.3B × /64 | RIPE NCC | 13th Mar 2018 | |
| 2a0d:ffc0::/29 | 34.4B × /64 | RIPE NCC | 15th Sept 2025 | |
| 2a0e:1080::/29 | 34.4B × /64 | RIPE NCC | 8th May 2019 | |
| 2a0e:10c0::/29 | 34.4B × /64 | RIPE NCC | 10th May 2024 | |
| 2a0e:1140::/29 | 34.4B × /64 | RIPE NCC | 27th Jun 2019 | |
| 2a0e:1180::/29 | 34.4B × /64 | RIPE NCC | 17th Sept 2025 | |
| 2a0e:1200::/29 | 34.4B × /64 | RIPE NCC | 11th Apr 2019 | |
| 2a0e:1240::/29 | 34.4B × /64 | RIPE NCC | 27th Jun 2019 | |
| 2a0e:1280::/32 | 4.3B × /64 | RIPE NCC | 8th May 2019 | |
| 2a0e:12c0::/29 | 34.4B × /64 | RIPE NCC | 27th Jun 2019 | |
| 2a0e:1340::/29 | 34.4B × /64 | RIPE NCC | 27th Jun 2019 | |
| 2a0e:1380::/29 | 34.4B × /64 | RIPE NCC | 9th May 2019 | |
| 2a0e:1400::/29 | 34.4B × /64 | RIPE NCC | 5th Apr 2019 | |
| 2a0e:1440::/29 | 34.4B × /64 | RIPE NCC | 5th Dec 2025 | |
| 2a0e:1480::/29 | 34.4B × /64 | RIPE NCC | 9th May 2019 | |
| 2a0e:1600::/32 | 4.3B × /64 | RIPE NCC | 11th Apr 2019 | |
| 2a0e:1640::/29 | 34.4B × /64 | RIPE NCC | 27th Jun 2019 | |
| 2a0e:1680::/29 | 34.4B × /64 | RIPE NCC | 9th May 2019 | |
| 2a0e:1800::/29 | 34.4B × /64 | RIPE NCC | 4th Apr 2019 | |
| 2a0e:1840::/29 | 34.4B × /64 | RIPE NCC | 28th Jun 2019 | |
| 2a0e:1880::/29 | 34.4B × /64 | RIPE NCC | 9th May 2019 | |
| 2a0e:18c0::/29 | 34.4B × /64 | RIPE NCC | 28th Jun 2019 | |
| 2a0e:1900::/29 | 34.4B × /64 | RIPE NCC | 23rd Apr 2019 | |
| 2a0e:1940::/29 | 34.4B × /64 | RIPE NCC | 28th Jun 2019 | |
| 2a0e:1980::/29 | 34.4B × /64 | RIPE NCC | 9th May 2019 | |
| 2a0e:1a40::/29 | 34.4B × /64 | RIPE NCC | 28th Jun 2019 | |
| 2a0e:1b40::/29 | 34.4B × /64 | RIPE NCC | 28th Jun 2019 | |
| 2a0e:1dc0::/29 | 34.4B × /64 | RIPE NCC | 1st Jul 2019 | |
| 2a0e:1e00::/29 | 34.4B × /64 | RIPE NCC | 11th Apr 2019 | |
| 2a0e:1f00::/29 | 34.4B × /64 | RIPE NCC | 23rd Apr 2019 | |
| 2a0e:1f40::/29 | 34.4B × /64 | RIPE NCC | 1st Jul 2019 | |
| 2a0e:1f80::/32 | 4.3B × /64 | RIPE NCC | 10th May 2019 | |
| 2a0e:1fc0::/29 | 34.4B × /64 | RIPE NCC | 1st Jul 2019 | |
| 2a0e:2040::/29 | 34.4B × /64 | RIPE NCC | 1st Feb 2022 | |
| 2a0e:2100::/29 | 34.4B × /64 | RIPE NCC | 23rd Apr 2019 | |
| 2a0e:2200::/29 | 34.4B × /64 | RIPE NCC | 29th Jan 2024 |