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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 |
|---|---|---|---|---|
| 2804:24f0::/32 | 4.3B × /64 | LACNIC |  BR | 14th May 2015 |
| 2804:24f4::/32 | 4.3B × /64 | LACNIC | BR | 14th May 2015 |
| 2804:251c::/32 | 4.3B × /64 | LACNIC | BR | 22nd May 2015 |
| 2804:2528::/32 | 4.3B × /64 | LACNIC | BR | 27th May 2015 |
| 2804:2544::/32 | 4.3B × /64 | LACNIC | BR | 1st Jun 2015 |
| 2804:25b8::/32 | 4.3B × /64 | LACNIC | BR | 12th Jun 2015 |
| 2804:25c::/32 | 4.3B × /64 | LACNIC | BR | 14th Oct 2010 |
| 2804:25fc::/32 | 4.3B × /64 | LACNIC | BR | 23rd Jun 2015 |
| 2804:263c::/32 | 4.3B × /64 | LACNIC | BR | 26th Jun 2015 |
| 2804:2680::/32 | 4.3B × /64 | LACNIC | BR | 3rd Jul 2015 |
| 2804:26a0::/32 | 4.3B × /64 | LACNIC | BR | 8th Jul 2015 |
| 2804:26b8::/32 | 4.3B × /64 | LACNIC | BR | 15th Jul 2015 |
| 2804:2704::/32 | 4.3B × /64 | LACNIC | BR | 24th Jul 2015 |
| 2804:2798::/32 | 4.3B × /64 | LACNIC | BR | 7th Aug 2015 |
| 2804:27b4::/32 | 4.3B × /64 | LACNIC | BR | 11th Aug 2015 |
| 2804:27bc::/32 | 4.3B × /64 | LACNIC | BR | 12th Aug 2015 |
| 2804:283c::/32 | 4.3B × /64 | LACNIC | BR | 20th Aug 2015 |
| 2804:2844::/32 | 4.3B × /64 | LACNIC | BR | 20th Aug 2015 |
| 2804:2850::/32 | 4.3B × /64 | LACNIC | BR | 21st Aug 2015 |
| 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 |
| 2804:2a18::/32 | 4.3B × /64 | LACNIC | BR | 30th 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 |
| 2804:2a48::/32 | 4.3B × /64 | LACNIC | BR | 9th 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 |
| 2804:2cf8::/32 | 4.3B × /64 | LACNIC | BR | 6th Jan 2016 |
| 2804:2d00::/32 | 4.3B × /64 | LACNIC | BR | 7th Jan 2016 |