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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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
85,239 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 2800:250::/32 | 4.3B × /64 | LACNIC |  UY | 25th Jun 2008 |
| 2800:2d0::/32 | 4.3B × /64 | LACNIC |  CO | 22nd Sept 2008 |
| 2800:30::/32 | 4.3B × /64 | LACNIC |  VE | 27th Dec 2005 |
| 2800:360::/32 | 4.3B × /64 | LACNIC |  CU | 29th May 2009 |
| 2800:38::/32 | 4.3B × /64 | LACNIC | VE | 28th Dec 2005 |
| 2800:460::/32 | 4.3B × /64 | LACNIC |  CL | 5th Feb 2010 |
| 2800:470::/32 | 4.3B × /64 | LACNIC |  SX | 10th Feb 2010 |
| 2800:4c0::/32 | 4.3B × /64 | LACNIC | CL | 11th Jun 2010 |
| 2800:570::/32 | 4.3B × /64 | LACNIC |  HT | 18th Nov 2010 |
| 2800:610::/32 | 4.3B × /64 | LACNIC |  AR | 7th Feb 2011 |
| 2800:6b0::/28 | 68.7B × /64 | LACNIC | VE | 17th Jun 2014 |
| 2800:820::/32 | 4.3B × /64 | LACNIC | AR | 14th Apr 2011 |
| 2800:850::/32 | 4.3B × /64 | LACNIC | AR | 11th May 2011 |
| 2800:8::/32 | 4.3B × /64 | LACNIC | CL | 24th Nov 2005 |
| 2800:8a0::/32 | 4.3B × /64 | LACNIC | CO | 1st Jun 2011 |
| 2800:8d0::/32 | 4.3B × /64 | LACNIC | AR | 6th Jun 2011 |
| 2800:900::/32 | 4.3B × /64 | LACNIC | AR | 14th Jun 2011 |
| 2800:90::/32 | 4.3B × /64 | LACNIC |  SV | 13th Oct 2006 |
| 2800:910::/32 | 4.3B × /64 | LACNIC | CU | 21st Jun 2011 |
| 2800:920::/32 | 4.3B × /64 | LACNIC | AR | 22nd Jun 2011 |
| 2800:980::/32 | 4.3B × /64 | LACNIC |  PA | 5th Aug 2011 |
| 2800:990::/32 | 4.3B × /64 | LACNIC | CL | 5th Aug 2011 |
| 2800:9c0::/32 | 4.3B × /64 | LACNIC | AR | 1st Sept 2011 |
| 2800:9d0::/32 | 4.3B × /64 | LACNIC | AR | 6th Sept 2011 |
| 2800:a000::/32 | 4.3B × /64 | LACNIC | VE | 31st Oct 2006 |
| 2800:a008::/32 | 4.3B × /64 | LACNIC | VE | 1st Nov 2006 |
| 2800:a010::/32 | 4.3B × /64 | LACNIC | VE | 13th Apr 2007 |
| 2800:a018::/32 | 4.3B × /64 | LACNIC | VE | 19th Apr 2007 |
| 2800:a020::/32 | 4.3B × /64 | LACNIC | VE | 3rd May 2007 |
| 2800:a028::/32 | 4.3B × /64 | LACNIC | VE | 13th Jul 2007 |
| 2800:a030::/32 | 4.3B × /64 | LACNIC | VE | 14th Dec 2007 |
| 2800:a038::/32 | 4.3B × /64 | LACNIC | VE | 5th May 2008 |
| 2800:a20::/32 | 4.3B × /64 | LACNIC |  CW | 21st Sept 2011 |
| 2800:a30::/32 | 4.3B × /64 | LACNIC | AR | 22nd Sept 2011 |
| 2800:a40::/32 | 4.3B × /64 | LACNIC | AR | 22nd Sept 2011 |
| 2800:a50::/32 | 4.3B × /64 | LACNIC | AR | 22nd Sept 2011 |
| 2800:a60::/32 | 4.3B × /64 | LACNIC | CL | 30th Sept 2011 |
| 2800:a90::/32 | 4.3B × /64 | LACNIC | AR | 14th Oct 2011 |
| 2800:aa0::/32 | 4.3B × /64 | LACNIC | AR | 17th Oct 2011 |
| 2800:b00::/32 | 4.3B × /64 | LACNIC |  BQ | 28th Oct 2011 |
| 2800:b60::/32 | 4.3B × /64 | LACNIC | AR | 11th Nov 2011 |
| 2800:b90::/32 | 4.3B × /64 | LACNIC |  CR | 17th Nov 2011 |
| 2800:bd0::/32 | 4.3B × /64 | LACNIC | VE | 7th Dec 2011 |
| 2800:c10::/32 | 4.3B × /64 | LACNIC |  EC | 7th Dec 2011 |
| 2800:c50::/32 | 4.3B × /64 | LACNIC | AR | 21st Dec 2011 |
| 2800:cf0::/32 | 4.3B × /64 | LACNIC | AR | 16th Jan 2012 |
| 2800:d10::/32 | 4.3B × /64 | LACNIC | AR | 23rd Jan 2012 |
| 2800:f0::/32 | 4.3B × /64 | LACNIC | CR | 30th Mar 2007 |
| 2801:0:10::/48 | 65.5k × /64 | LACNIC | CL | 12th Nov 2008 |
| 2801:0:110::/48 | 65.5k × /64 | LACNIC |  GT | 7th Jul 2011 |