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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 |
|---|---|---|---|---|
| 2804:8e94::/32 | 4.3B × /64 | LACNIC |  BR | 11th Jan 2024 |
| 2804:8f90::/32 | 4.3B × /64 | LACNIC | BR | 11th Apr 2024 |
| 2804:8fac::/32 | 4.3B × /64 | LACNIC | BR | 19th Apr 2024 |
| 2804:8fb4::/32 | 4.3B × /64 | LACNIC | BR | 22nd Apr 2024 |
| 2804:8fc4::/32 | 4.3B × /64 | LACNIC | BR | 26th Apr 2024 |
| 2804:8fe8::/32 | 4.3B × /64 | LACNIC | BR | 20th May 2024 |
| 2804:9018::/32 | 4.3B × /64 | LACNIC | BR | 10th Jun 2024 |
| 2804:9028::/32 | 4.3B × /64 | LACNIC | BR | 14th Jun 2024 |
| 2804:902c::/32 | 4.3B × /64 | LACNIC | BR | 14th Jun 2024 |
| 2804:9034::/32 | 4.3B × /64 | LACNIC | BR | 18th Jun 2024 |
| 2804:9038::/32 | 4.3B × /64 | LACNIC | BR | 19th Jun 2024 |
| 2804:903c::/32 | 4.3B × /64 | LACNIC | BR | 19th Jun 2024 |
| 2804:9044::/32 | 4.3B × /64 | LACNIC | BR | 24th Jun 2024 |
| 2804:904c::/32 | 4.3B × /64 | LACNIC | BR | 27th Jun 2024 |
| 2804:90a4::/32 | 4.3B × /64 | LACNIC | BR | 6th Aug 2024 |
| 2804:90d8::/32 | 4.3B × /64 | LACNIC | BR | 14th Aug 2024 |
| 2804:9100::/32 | 4.3B × /64 | LACNIC | BR | 28th Aug 2024 |
| 2804:912c::/32 | 4.3B × /64 | LACNIC | BR | 6th Sept 2024 |
| 2804:9134::/32 | 4.3B × /64 | LACNIC | BR | 6th Sept 2024 |
| 2804:9164::/32 | 4.3B × /64 | LACNIC | BR | 20th Sept 2024 |
| 2804:91a4::/32 | 4.3B × /64 | LACNIC | BR | 3rd Oct 2024 |
| 2804:9200::/32 | 4.3B × /64 | LACNIC | BR | 4th Nov 2024 |
| 2804:9204::/32 | 4.3B × /64 | LACNIC | BR | 4th Nov 2024 |
| 2804:924::/32 | 4.3B × /64 | LACNIC | BR | 15th Mar 2012 |
| 2804:924c::/32 | 4.3B × /64 | LACNIC | BR | 21st Nov 2024 |
| 2804:9260::/32 | 4.3B × /64 | LACNIC | BR | 29th Nov 2024 |
| 2804:9264::/32 | 4.3B × /64 | LACNIC | BR | 2nd Dec 2024 |
| 2804:9280::/32 | 4.3B × /64 | LACNIC | BR | 5th Dec 2024 |
| 2804:92a4::/32 | 4.3B × /64 | LACNIC | BR | 12th Dec 2024 |
| 2804:92b0::/32 | 4.3B × /64 | LACNIC | BR | 18th Dec 2024 |
| 2804:92c::/32 | 4.3B × /64 | LACNIC | BR | 16th Mar 2012 |
| 2804:92d0::/32 | 4.3B × /64 | LACNIC | BR | 7th Jan 2025 |
| 2804:92d8::/32 | 4.3B × /64 | LACNIC | BR | 7th Jan 2025 |
| 2804:92fc::/32 | 4.3B × /64 | LACNIC | BR | 31st Jan 2025 |
| 2804:9334::/32 | 4.3B × /64 | LACNIC | BR | 21st Feb 2025 |
| 2804:9358::/32 | 4.3B × /64 | LACNIC | BR | 10th Mar 2025 |
| 2804:9378::/32 | 4.3B × /64 | LACNIC | BR | 25th Mar 2025 |
| 2804:9388::/32 | 4.3B × /64 | LACNIC | BR | 27th Mar 2025 |
| 2804:938c::/32 | 4.3B × /64 | LACNIC | BR | 1st Apr 2025 |
| 2804:93ac::/32 | 4.3B × /64 | LACNIC | BR | 14th Apr 2025 |
| 2804:93c8::/32 | 4.3B × /64 | LACNIC | BR | 17th Apr 2025 |
| 2804:93cc::/32 | 4.3B × /64 | LACNIC | BR | 17th Apr 2025 |
| 2804:93f0::/32 | 4.3B × /64 | LACNIC | BR | 5th May 2025 |
| 2804:9408::/32 | 4.3B × /64 | LACNIC | BR | 12th May 2025 |
| 2804:940::/32 | 4.3B × /64 | LACNIC | BR | 21st Mar 2012 |
| 2804:9424::/32 | 4.3B × /64 | LACNIC | BR | 23rd May 2025 |
| 2804:9450::/32 | 4.3B × /64 | LACNIC | BR | 9th Jun 2025 |
| 2804:9454::/32 | 4.3B × /64 | LACNIC | BR | 9th Jun 2025 |
| 2804:9460::/32 | 4.3B × /64 | LACNIC | BR | 16th Jun 2025 |
| 2804:9488::/32 | 4.3B × /64 | LACNIC | BR | 3rd Jul 2025 |