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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 |
|---|---|---|---|---|
| 2804:286c::/32 | 4.3B × /64 | LACNIC |  BR | 24th Aug 2015 |
| 2804:2878::/32 | 4.3B × /64 | LACNIC | BR | 25th Aug 2015 |
| 2804:2880::/32 | 4.3B × /64 | LACNIC | BR | 26th Aug 2015 |
| 2804:28::/32 | 4.3B × /64 | LACNIC | BR | 2nd Jun 2009 |
| 2804:29dc::/32 | 4.3B × /64 | LACNIC | BR | 24th Sept 2015 |
| 2804:29ec::/32 | 4.3B × /64 | LACNIC | BR | 28th Sept 2015 |
| 2804:2a20::/32 | 4.3B × /64 | LACNIC | BR | 1st Oct 2015 |
| 2804:2a2c::/32 | 4.3B × /64 | LACNIC | BR | 5th Oct 2015 |
| 2804:2a34::/32 | 4.3B × /64 | LACNIC | BR | 5th Oct 2015 |
| 2804:2a78::/32 | 4.3B × /64 | LACNIC | BR | 22nd Oct 2015 |
| 2804:2aac::/32 | 4.3B × /64 | LACNIC | BR | 29th Oct 2015 |
| 2804:2acc::/32 | 4.3B × /64 | LACNIC | BR | 30th Oct 2015 |
| 2804:2ad4::/32 | 4.3B × /64 | LACNIC | BR | 3rd Nov 2015 |
| 2804:2ae0::/32 | 4.3B × /64 | LACNIC | BR | 3rd Nov 2015 |
| 2804:2afc::/32 | 4.3B × /64 | LACNIC | BR | 4th Nov 2015 |
| 2804:2b08::/32 | 4.3B × /64 | LACNIC | BR | 4th Nov 2015 |
| 2804:2b0c::/32 | 4.3B × /64 | LACNIC | BR | 5th Nov 2015 |
| 2804:2b14::/32 | 4.3B × /64 | LACNIC | BR | 6th Nov 2015 |
| 2804:2b50::/32 | 4.3B × /64 | LACNIC | BR | 16th Nov 2015 |
| 2804:2b70::/32 | 4.3B × /64 | LACNIC | BR | 25th Nov 2015 |
| 2804:2bdc::/32 | 4.3B × /64 | LACNIC | BR | 3rd Dec 2015 |
| 2804:2be8::/32 | 4.3B × /64 | LACNIC | BR | 7th Dec 2015 |
| 2804:2c0c::/32 | 4.3B × /64 | LACNIC | BR | 11th Dec 2015 |
| 2804:2c34::/32 | 4.3B × /64 | LACNIC | BR | 17th Dec 2015 |
| 2804:2c60::/32 | 4.3B × /64 | LACNIC | BR | 21st Dec 2015 |
| 2804:2c64::/32 | 4.3B × /64 | LACNIC | BR | 21st Dec 2015 |
| 2804:2c90::/32 | 4.3B × /64 | LACNIC | BR | 28th Dec 2015 |
| 2804:2cd4::/32 | 4.3B × /64 | LACNIC | BR | 30th Dec 2015 |
| 2804:2d00::/32 | 4.3B × /64 | LACNIC | BR | 7th Jan 2016 |
| 2804:2d20::/32 | 4.3B × /64 | LACNIC | BR | 12th Jan 2016 |
| 2804:2d7c::/32 | 4.3B × /64 | LACNIC | BR | 21st Jan 2016 |
| 2804:2d8c::/32 | 4.3B × /64 | LACNIC | BR | 22nd Jan 2016 |
| 2804:2dd0::/32 | 4.3B × /64 | LACNIC | BR | 29th Jan 2016 |
| 2804:2de0::/32 | 4.3B × /64 | LACNIC | BR | 1st Feb 2016 |
| 2804:2e6c::/32 | 4.3B × /64 | LACNIC | BR | 25th Feb 2016 |
| 2804:2eac::/32 | 4.3B × /64 | LACNIC | BR | 7th Mar 2016 |
| 2804:2ec8::/32 | 4.3B × /64 | LACNIC | BR | 9th Mar 2016 |
| 2804:2ed8::/32 | 4.3B × /64 | LACNIC | BR | 10th Mar 2016 |
| 2804:2eec::/32 | 4.3B × /64 | LACNIC | BR | 14th Mar 2016 |
| 2804:2f14::/32 | 4.3B × /64 | LACNIC | BR | 16th Mar 2016 |
| 2804:2f38::/32 | 4.3B × /64 | LACNIC | BR | 18th Mar 2016 |
| 2804:2f64::/32 | 4.3B × /64 | LACNIC | BR | 23rd Mar 2016 |
| 2804:2f78::/32 | 4.3B × /64 | LACNIC | BR | 28th Mar 2016 |
| 2804:2fa0::/32 | 4.3B × /64 | LACNIC | BR | 30th Mar 2016 |
| 2804:2fd4::/32 | 4.3B × /64 | LACNIC | BR | 8th Apr 2016 |
| 2804:3010::/32 | 4.3B × /64 | LACNIC | BR | 14th Apr 2016 |
| 2804:3020::/32 | 4.3B × /64 | LACNIC | BR | 15th Apr 2016 |
| 2804:3038::/32 | 4.3B × /64 | LACNIC | BR | 19th Apr 2016 |
| 2804:30a4::/32 | 4.3B × /64 | LACNIC | BR | 13th May 2016 |
| 2804:30c8::/32 | 4.3B × /64 | LACNIC | BR | 16th May 2016 |