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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 |
|---|---|---|---|---|
| 2804:9af0::/32 | 4.3B × /64 | LACNIC |  BR | 16th Oct 2026 |
| 2804:9af4::/32 | 4.3B × /64 | LACNIC | BR | 19th Oct 2026 |
| 2804:9b0::/32 | 4.3B × /64 | LACNIC | BR | 7th May 2012 |
| 2804:9b0c::/32 | 4.3B × /64 | LACNIC | BR | 27th Oct 2026 |
| 2804:9b10::/32 | 4.3B × /64 | LACNIC | BR | 28th Oct 2026 |
| 2804:9b14::/32 | 4.3B × /64 | LACNIC | BR | 29th Oct 2026 |
| 2804:9b18::/32 | 4.3B × /64 | LACNIC | BR | 3rd Nov 2026 |
| 2804:9b1c::/32 | 4.3B × /64 | LACNIC | BR | 6th Nov 2026 |
| 2804:9b20::/32 | 4.3B × /64 | LACNIC | BR | 11th Nov 2026 |
| 2804:9b24::/32 | 4.3B × /64 | LACNIC | BR | 11th Nov 2026 |
| 2804:9b8::/32 | 4.3B × /64 | LACNIC | BR | 10th May 2012 |
| 2804:9cc::/32 | 4.3B × /64 | LACNIC | BR | 15th May 2012 |
| 2804:9e8::/32 | 4.3B × /64 | LACNIC | BR | 18th May 2012 |
| 2804:9fc::/32 | 4.3B × /64 | LACNIC | BR | 22nd May 2012 |
| 2804:a34::/32 | 4.3B × /64 | LACNIC | BR | 6th Jun 2012 |
| 2804:a3c::/32 | 4.3B × /64 | LACNIC | BR | 11th Jun 2012 |
| 2804:a5c::/32 | 4.3B × /64 | LACNIC | BR | 26th Jun 2012 |
| 2804:a68::/32 | 4.3B × /64 | LACNIC | BR | 3rd Jul 2012 |
| 2804:a70::/32 | 4.3B × /64 | LACNIC | BR | 3rd Jul 2012 |
| 2804:a88::/32 | 4.3B × /64 | LACNIC | BR | 16th Jul 2012 |
| 2804:a90::/32 | 4.3B × /64 | LACNIC | BR | 17th Jul 2012 |
| 2804:b1c::/32 | 4.3B × /64 | LACNIC | BR | 22nd Aug 2012 |
| 2804:b60::/32 | 4.3B × /64 | LACNIC | BR | 10th Sept 2012 |
| 2804:b78::/32 | 4.3B × /64 | LACNIC | BR | 17th Sept 2012 |
| 2804:b80::/32 | 4.3B × /64 | LACNIC | BR | 21st Sept 2012 |
| 2804:b88::/32 | 4.3B × /64 | LACNIC | BR | 27th Sept 2012 |
| 2804:b9c::/32 | 4.3B × /64 | LACNIC | BR | 1st Oct 2012 |
| 2804:ba4::/31 | 8.6B × /64 | LACNIC | BR | 3rd Oct 2012 |
| 2804:bb0::/32 | 4.3B × /64 | LACNIC | BR | 8th Oct 2012 |
| 2804:bbc::/32 | 4.3B × /64 | LACNIC | BR | 10th Oct 2012 |
| 2804:be0::/32 | 4.3B × /64 | LACNIC | BR | 25th Oct 2012 |
| 2804:c10::/32 | 4.3B × /64 | LACNIC | BR | 23rd Nov 2012 |
| 2804:c50::/32 | 4.3B × /64 | LACNIC | BR | 14th Dec 2012 |
| 2804:cc4::/32 | 4.3B × /64 | LACNIC | BR | 6th Feb 2013 |
| 2804:cc::/32 | 4.3B × /64 | LACNIC | BR | 8th Dec 2009 |
| 2804:d18::/32 | 4.3B × /64 | LACNIC | BR | 19th Mar 2013 |
| 2804:d68::/32 | 4.3B × /64 | LACNIC | BR | 3rd Apr 2013 |
| 2804:d8::/32 | 4.3B × /64 | LACNIC | BR | 18th Dec 2009 |
| 2804:dbc::/32 | 4.3B × /64 | LACNIC | BR | 3rd May 2013 |
| 2804:e38::/32 | 4.3B × /64 | LACNIC | BR | 18th Jun 2013 |
| 2804:e44::/32 | 4.3B × /64 | LACNIC | BR | 19th Jun 2013 |
| 2804:e78::/32 | 4.3B × /64 | LACNIC | BR | 26th Jun 2013 |
| 2804:e98::/32 | 4.3B × /64 | LACNIC | BR | 2nd Jul 2013 |
| 2804:e9c::/32 | 4.3B × /64 | LACNIC | BR | 2nd Jul 2013 |
| 2804:ea4::/32 | 4.3B × /64 | LACNIC | BR | 5th Jul 2013 |
| 2804:ed0::/32 | 4.3B × /64 | LACNIC | BR | 15th Jul 2013 |
| 2804:f48::/32 | 4.3B × /64 | LACNIC | BR | 12th Aug 2013 |
| 2804:f98::/32 | 4.3B × /64 | LACNIC | BR | 22nd Aug 2013 |
| 2804:fb8::/32 | 4.3B × /64 | LACNIC | BR | 29th Aug 2013 |
| 2804:fc4::/32 | 4.3B × /64 | LACNIC | BR | 30th Aug 2013 |