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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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
84,502 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 2804:7998::/32 | 4.3B × /64 | LACNIC |  BR | 9th Sept 2020 |
| 2804:79c::/32 | 4.3B × /64 | LACNIC | BR | 13th Dec 2011 |
| 2804:79d8::/32 | 4.3B × /64 | LACNIC | BR | 10th Sept 2020 |
| 2804:79dc::/32 | 4.3B × /64 | LACNIC | BR | 10th Sept 2020 |
| 2804:79ec::/32 | 4.3B × /64 | LACNIC | BR | 10th Sept 2020 |
| 2804:7a14::/32 | 4.3B × /64 | LACNIC | BR | 14th Sept 2020 |
| 2804:7a5c::/32 | 4.3B × /64 | LACNIC | BR | 18th Sept 2020 |
| 2804:7a7c::/32 | 4.3B × /64 | LACNIC | BR | 22nd Sept 2020 |
| 2804:7ad8::/32 | 4.3B × /64 | LACNIC | BR | 29th Sept 2020 |
| 2804:7af0::/32 | 4.3B × /64 | LACNIC | BR | 30th Sept 2020 |
| 2804:7b34::/32 | 4.3B × /64 | LACNIC | BR | 6th Oct 2020 |
| 2804:7b5c::/32 | 4.3B × /64 | LACNIC | BR | 8th Oct 2020 |
| 2804:7b8c::/32 | 4.3B × /64 | LACNIC | BR | 13th Oct 2020 |
| 2804:7c3c::/32 | 4.3B × /64 | LACNIC | BR | 29th Oct 2020 |
| 2804:7c9c::/32 | 4.3B × /64 | LACNIC | BR | 10th Nov 2020 |
| 2804:7ca8::/32 | 4.3B × /64 | LACNIC | BR | 10th Nov 2020 |
| 2804:7cb4::/32 | 4.3B × /64 | LACNIC | BR | 12th Nov 2020 |
| 2804:7cd8::/32 | 4.3B × /64 | LACNIC | BR | 18th Nov 2020 |
| 2804:7cf0::/32 | 4.3B × /64 | LACNIC | BR | 20th Nov 2020 |
| 2804:7d10::/32 | 4.3B × /64 | LACNIC | BR | 3rd Dec 2020 |
| 2804:7d30::/32 | 4.3B × /64 | LACNIC | BR | 8th Dec 2020 |
| 2804:7e5c::/32 | 4.3B × /64 | LACNIC | BR | 8th Feb 2021 |
| 2804:7e94::/32 | 4.3B × /64 | LACNIC | BR | 18th Feb 2021 |
| 2804:7e9c::/32 | 4.3B × /64 | LACNIC | BR | 19th Feb 2021 |
| 2804:7eb4::/32 | 4.3B × /64 | LACNIC | BR | 22nd Feb 2021 |
| 2804:7f4c::/32 | 4.3B × /64 | LACNIC | BR | 24th Mar 2021 |
| 2804:7f58::/32 | 4.3B × /64 | LACNIC | BR | 25th Mar 2021 |
| 2804:7f90::/32 | 4.3B × /64 | LACNIC | BR | 8th Apr 2021 |
| 2804:7f98::/32 | 4.3B × /64 | LACNIC | BR | 9th Apr 2021 |
| 2804:7fd8::/32 | 4.3B × /64 | LACNIC | BR | 16th Apr 2021 |
| 2804:7ff8::/32 | 4.3B × /64 | LACNIC | BR | 26th Apr 2021 |
| 2804:80ec::/32 | 4.3B × /64 | LACNIC | BR | 3rd Jun 2021 |
| 2804:80fc::/32 | 4.3B × /64 | LACNIC | BR | 8th Jun 2021 |
| 2804:8104::/32 | 4.3B × /64 | LACNIC | BR | 9th Jun 2021 |
| 2804:812c::/32 | 4.3B × /64 | LACNIC | BR | 16th Jun 2021 |
| 2804:8164::/32 | 4.3B × /64 | LACNIC | BR | 24th Jun 2021 |
| 2804:8178::/32 | 4.3B × /64 | LACNIC | BR | 29th Jun 2021 |
| 2804:8238::/32 | 4.3B × /64 | LACNIC | BR | 4th Aug 2021 |
| 2804:824c::/32 | 4.3B × /64 | LACNIC | BR | 5th Aug 2021 |
| 2804:8264::/32 | 4.3B × /64 | LACNIC | BR | 9th Aug 2021 |
| 2804:82c0::/32 | 4.3B × /64 | LACNIC | BR | 20th Aug 2021 |
| 2804:830c::/32 | 4.3B × /64 | LACNIC | BR | 8th Sept 2021 |
| 2804:8314::/32 | 4.3B × /64 | LACNIC | BR | 8th Sept 2021 |
| 2804:8324::/32 | 4.3B × /64 | LACNIC | BR | 10th Sept 2021 |
| 2804:8390::/32 | 4.3B × /64 | LACNIC | BR | 13th Oct 2021 |
| 2804:8398::/32 | 4.3B × /64 | LACNIC | BR | 13th Oct 2021 |
| 2804:83a4::/32 | 4.3B × /64 | LACNIC | BR | 14th Oct 2021 |
| 2804:8418::/32 | 4.3B × /64 | LACNIC | BR | 4th Nov 2021 |
| 2804:8468::/32 | 4.3B × /64 | LACNIC | BR | 17th Nov 2021 |
| 2804:847c::/32 | 4.3B × /64 | LACNIC | BR | 18th Nov 2021 |