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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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
85,221 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 2804:8754::/32 | 4.3B × /64 | LACNIC |  BR | 26th May 2022 |
| 2804:87c8::/32 | 4.3B × /64 | LACNIC | BR | 28th Jun 2022 |
| 2804:8818::/32 | 4.3B × /64 | LACNIC | BR | 14th Jul 2022 |
| 2804:8848::/32 | 4.3B × /64 | LACNIC | BR | 28th Jul 2022 |
| 2804:884::/32 | 4.3B × /64 | LACNIC | BR | 6th Feb 2012 |
| 2804:88a4::/32 | 4.3B × /64 | LACNIC | BR | 17th Aug 2022 |
| 2804:8960::/32 | 4.3B × /64 | LACNIC | BR | 11th Oct 2022 |
| 2804:898c::/32 | 4.3B × /64 | LACNIC | BR | 31st Oct 2022 |
| 2804:89c4::/32 | 4.3B × /64 | LACNIC | BR | 16th Nov 2022 |
| 2804:89ec::/32 | 4.3B × /64 | LACNIC | BR | 23rd Nov 2022 |
| 2804:8a08::/32 | 4.3B × /64 | LACNIC | BR | 1st Dec 2022 |
| 2804:8a0::/32 | 4.3B × /64 | LACNIC | BR | 10th Feb 2012 |
| 2804:8a38::/32 | 4.3B × /64 | LACNIC | BR | 16th Dec 2022 |
| 2804:8a48::/32 | 4.3B × /64 | LACNIC | BR | 19th Dec 2022 |
| 2804:8a4c::/32 | 4.3B × /64 | LACNIC | BR | 21st Dec 2022 |
| 2804:8ad4::/32 | 4.3B × /64 | LACNIC | BR | 23rd Feb 2023 |
| 2804:8ae8::/32 | 4.3B × /64 | LACNIC | BR | 28th Feb 2023 |
| 2804:8b0c::/32 | 4.3B × /64 | LACNIC | BR | 14th Mar 2023 |
| 2804:8b4::/32 | 4.3B × /64 | LACNIC | BR | 17th Feb 2012 |
| 2804:8b80::/32 | 4.3B × /64 | LACNIC | BR | 14th Apr 2023 |
| 2804:8bb4::/32 | 4.3B × /64 | LACNIC | BR | 8th May 2023 |
| 2804:8bb8::/32 | 4.3B × /64 | LACNIC | BR | 9th May 2023 |
| 2804:8bc::/32 | 4.3B × /64 | LACNIC | BR | 17th Feb 2012 |
| 2804:8bd0::/32 | 4.3B × /64 | LACNIC | BR | 24th May 2023 |
| 2804:8bd4::/32 | 4.3B × /64 | LACNIC | BR | 24th May 2023 |
| 2804:8c2c::/32 | 4.3B × /64 | LACNIC | BR | 27th Jun 2023 |
| 2804:8c3c::/32 | 4.3B × /64 | LACNIC | BR | 6th Jul 2023 |
| 2804:8c74::/32 | 4.3B × /64 | LACNIC | BR | 21st Jul 2023 |
| 2804:8c78::/32 | 4.3B × /64 | LACNIC | BR | 25th Jul 2023 |
| 2804:8c84::/32 | 4.3B × /64 | LACNIC | BR | 1st Aug 2023 |
| 2804:8c8c::/32 | 4.3B × /64 | LACNIC | BR | 4th Aug 2023 |
| 2804:8c90::/32 | 4.3B × /64 | LACNIC | BR | 4th Aug 2023 |
| 2804:8c94::/32 | 4.3B × /64 | LACNIC | BR | 4th Aug 2023 |
| 2804:8c::/32 | 4.3B × /64 | LACNIC | BR | 13th Oct 2009 |
| 2804:8ca0::/32 | 4.3B × /64 | LACNIC | BR | 8th Aug 2023 |
| 2804:8ca4::/32 | 4.3B × /64 | LACNIC | BR | 9th Aug 2023 |
| 2804:8cc0::/32 | 4.3B × /64 | LACNIC | BR | 14th Aug 2023 |
| 2804:8cf8::/32 | 4.3B × /64 | LACNIC | BR | 24th Aug 2023 |
| 2804:8d3c::/32 | 4.3B × /64 | LACNIC | BR | 20th Sept 2023 |
| 2804:8d5c::/32 | 4.3B × /64 | LACNIC | BR | 2nd Oct 2023 |
| 2804:8d6c::/32 | 4.3B × /64 | LACNIC | BR | 6th Oct 2023 |
| 2804:8d78::/32 | 4.3B × /64 | LACNIC | BR | 17th Oct 2023 |
| 2804:8d8::/32 | 4.3B × /64 | LACNIC | BR | 24th Feb 2012 |
| 2804:8d98::/32 | 4.3B × /64 | LACNIC | BR | 20th Oct 2023 |
| 2804:8ddc::/32 | 4.3B × /64 | LACNIC | BR | 14th Nov 2023 |
| 2804:8e0::/32 | 4.3B × /64 | LACNIC | BR | 28th Feb 2012 |
| 2804:8e0c::/32 | 4.3B × /64 | LACNIC | BR | 1st Dec 2023 |
| 2804:8e58::/32 | 4.3B × /64 | LACNIC | BR | 22nd Dec 2023 |
| 2804:8e5c::/32 | 4.3B × /64 | LACNIC | BR | 26th Dec 2023 |
| 2804:8e78::/32 | 4.3B × /64 | LACNIC | BR | 3rd Jan 2024 |