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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 |
|---|---|---|---|---|
| 2804:74c::/32 | 4.3B × /64 | LACNIC |  BR | 1st Nov 2011 |
| 2804:74ec::/32 | 4.3B × /64 | LACNIC | BR | 29th Jul 2020 |
| 2804:7500::/32 | 4.3B × /64 | LACNIC | BR | 30th Jul 2020 |
| 2804:753c::/32 | 4.3B × /64 | LACNIC | BR | 3rd Aug 2020 |
| 2804:755c::/32 | 4.3B × /64 | LACNIC | BR | 3rd Aug 2020 |
| 2804:7574::/32 | 4.3B × /64 | LACNIC | BR | 4th Aug 2020 |
| 2804:7584::/32 | 4.3B × /64 | LACNIC | BR | 4th Aug 2020 |
| 2804:75bc::/32 | 4.3B × /64 | LACNIC | BR | 4th Aug 2020 |
| 2804:75d0::/32 | 4.3B × /64 | LACNIC | BR | 4th Aug 2020 |
| 2804:760c::/32 | 4.3B × /64 | LACNIC | BR | 5th Aug 2020 |
| 2804:7614::/32 | 4.3B × /64 | LACNIC | BR | 5th Aug 2020 |
| 2804:763c::/32 | 4.3B × /64 | LACNIC | BR | 5th Aug 2020 |
| 2804:7644::/32 | 4.3B × /64 | LACNIC | BR | 5th Aug 2020 |
| 2804:7658::/32 | 4.3B × /64 | LACNIC | BR | 5th Aug 2020 |
| 2804:7660::/32 | 4.3B × /64 | LACNIC | BR | 6th Aug 2020 |
| 2804:7678::/32 | 4.3B × /64 | LACNIC | BR | 6th Aug 2020 |
| 2804:768c::/32 | 4.3B × /64 | LACNIC | BR | 6th Aug 2020 |
| 2804:7698::/32 | 4.3B × /64 | LACNIC | BR | 6th Aug 2020 |
| 2804:76b8::/32 | 4.3B × /64 | LACNIC | BR | 6th Aug 2020 |
| 2804:76dc::/32 | 4.3B × /64 | LACNIC | BR | 7th Aug 2020 |
| 2804:7714::/32 | 4.3B × /64 | LACNIC | BR | 7th Aug 2020 |
| 2804:7728::/32 | 4.3B × /64 | LACNIC | BR | 10th Aug 2020 |
| 2804:7754::/32 | 4.3B × /64 | LACNIC | BR | 11th Aug 2020 |
| 2804:7758::/32 | 4.3B × /64 | LACNIC | BR | 11th Aug 2020 |
| 2804:77d4::/32 | 4.3B × /64 | LACNIC | BR | 13th Aug 2020 |
| 2804:780::/32 | 4.3B × /64 | LACNIC | BR | 5th Dec 2011 |
| 2804:780c::/32 | 4.3B × /64 | LACNIC | BR | 17th Aug 2020 |
| 2804:7814::/32 | 4.3B × /64 | LACNIC | BR | 17th Aug 2020 |
| 2804:781c::/32 | 4.3B × /64 | LACNIC | BR | 17th Aug 2020 |
| 2804:7820::/32 | 4.3B × /64 | LACNIC | BR | 17th Aug 2020 |
| 2804:7834::/32 | 4.3B × /64 | LACNIC | BR | 18th Aug 2020 |
| 2804:785c::/32 | 4.3B × /64 | LACNIC | BR | 19th Aug 2020 |
| 2804:7870::/32 | 4.3B × /64 | LACNIC | BR | 19th Aug 2020 |
| 2804:78b0::/32 | 4.3B × /64 | LACNIC | BR | 20th Aug 2020 |
| 2804:78cc::/32 | 4.3B × /64 | LACNIC | BR | 21st Aug 2020 |
| 2804:7928::/32 | 4.3B × /64 | LACNIC | BR | 1st Sept 2020 |
| 2804:793c::/32 | 4.3B × /64 | LACNIC | BR | 2nd Sept 2020 |
| 2804:798c::/32 | 4.3B × /64 | LACNIC | BR | 8th Sept 2020 |
| 2804:7990::/32 | 4.3B × /64 | LACNIC | BR | 8th Sept 2020 |
| 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 |