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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 in Brazil
1,567 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 2804:9658::/32 | 4.3B × /64 | LACNIC |  BR | 29th Oct 2025 |
| 2804:968::/32 | 4.3B × /64 | LACNIC | BR | 16th Apr 2012 |
| 2804:968c::/32 | 4.3B × /64 | LACNIC | BR | 7th Nov 2025 |
| 2804:9694::/32 | 4.3B × /64 | LACNIC | BR | 10th Nov 2025 |
| 2804:9698::/32 | 4.3B × /64 | LACNIC | BR | 10th Nov 2025 |
| 2804:969c::/32 | 4.3B × /64 | LACNIC | BR | 10th Nov 2025 |
| 2804:96ac::/32 | 4.3B × /64 | LACNIC | BR | 11th Nov 2025 |
| 2804:96bc::/32 | 4.3B × /64 | LACNIC | BR | 17th Nov 2025 |
| 2804:96c4::/32 | 4.3B × /64 | LACNIC | BR | 19th Nov 2025 |
| 2804:96cc::/32 | 4.3B × /64 | LACNIC | BR | 19th Nov 2025 |
| 2804:96dc::/32 | 4.3B × /64 | LACNIC | BR | 24th Nov 2025 |
| 2804:96e8::/32 | 4.3B × /64 | LACNIC | BR | 26th Nov 2025 |
| 2804:96f8::/32 | 4.3B × /64 | LACNIC | BR | 2nd Dec 2025 |
| 2804:9700::/32 | 4.3B × /64 | LACNIC | BR | 4th Dec 2025 |
| 2804:9704::/32 | 4.3B × /64 | LACNIC | BR | 4th Dec 2025 |
| 2804:9710::/32 | 4.3B × /64 | LACNIC | BR | 11th Dec 2025 |
| 2804:9724::/32 | 4.3B × /64 | LACNIC | BR | 12th Dec 2025 |
| 2804:9748::/32 | 4.3B × /64 | LACNIC | BR | 22nd Dec 2025 |
| 2804:9770::/32 | 4.3B × /64 | LACNIC | BR | 6th Jan 2026 |
| 2804:97d8::/32 | 4.3B × /64 | LACNIC | BR | 11th Feb 2026 |
| 2804:97dc::/32 | 4.3B × /64 | LACNIC | BR | 12th Feb 2026 |
| 2804:97f0::/32 | 4.3B × /64 | LACNIC | BR | 19th Feb 2026 |
| 2804:97f8::/32 | 4.3B × /64 | LACNIC | BR | 20th Feb 2026 |
| 2804:9800::/32 | 4.3B × /64 | LACNIC | BR | 25th Feb 2026 |
| 2804:980c::/32 | 4.3B × /64 | LACNIC | BR | 26th Feb 2026 |
| 2804:9818::/32 | 4.3B × /64 | LACNIC | BR | 3rd Mar 2026 |
| 2804:981c::/32 | 4.3B × /64 | LACNIC | BR | 4th Mar 2026 |
| 2804:982c::/32 | 4.3B × /64 | LACNIC | BR | 6th Mar 2026 |
| 2804:984c::/32 | 4.3B × /64 | LACNIC | BR | 17th Mar 2026 |
| 2804:9864::/32 | 4.3B × /64 | LACNIC | BR | 19th Mar 2026 |
| 2804:986c::/32 | 4.3B × /64 | LACNIC | BR | 23rd Mar 2026 |
| 2804:9890::/32 | 4.3B × /64 | LACNIC | BR | 6th Apr 2026 |
| 2804:9894::/32 | 4.3B × /64 | LACNIC | BR | 6th Apr 2026 |
| 2804:989c::/32 | 4.3B × /64 | LACNIC | BR | 7th Apr 2026 |
| 2804:98a4::/32 | 4.3B × /64 | LACNIC | BR | 8th Apr 2026 |
| 2804:98bc::/32 | 4.3B × /64 | LACNIC | BR | 15th Apr 2026 |
| 2804:98c4::/32 | 4.3B × /64 | LACNIC | BR | 15th Apr 2026 |
| 2804:98d4::/32 | 4.3B × /64 | LACNIC | BR | 27th Apr 2026 |
| 2804:98dc::/32 | 4.3B × /64 | LACNIC | BR | 30th Apr 2026 |
| 2804:98e0::/32 | 4.3B × /64 | LACNIC | BR | 30th Apr 2026 |
| 2804:98f0::/32 | 4.3B × /64 | LACNIC | BR | 5th May 2026 |
| 2804:98f8::/32 | 4.3B × /64 | LACNIC | BR | 12th May 2026 |
| 2804:9904::/32 | 4.3B × /64 | LACNIC | BR | 21st May 2026 |
| 2804:990::/32 | 4.3B × /64 | LACNIC | BR | 27th Apr 2012 |
| 2804:990c::/32 | 4.3B × /64 | LACNIC | BR | 25th May 2026 |
| 2804:9928::/32 | 4.3B × /64 | LACNIC | BR | 8th Jun 2026 |
| 2804:9934::/32 | 4.3B × /64 | LACNIC | BR | 11th Jun 2026 |
| 2804:9938::/32 | 4.3B × /64 | LACNIC | BR | 15th Jun 2026 |
| 2804:993c::/32 | 4.3B × /64 | LACNIC | BR | 15th Jun 2026 |
| 2804:994c::/32 | 4.3B × /64 | LACNIC | BR | 16th Jun 2026 |