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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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.
Browse by registry
Browse by country
Countries with the most unannounced blocks, largest first.
Unannounced blocks in Canada
3,819 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 2607:d380::/32 | 4.3B × /64 | ARIN | 22nd Nov 2016 | |
| 2607:d700::/32 | 4.3B × /64 | ARIN | 17th Jul 2012 | |
| 2607:d880::/32 | 4.3B × /64 | ARIN | 30th Nov 2016 | |
| 2607:de00::/32 | 4.3B × /64 | ARIN | 15th Mar 2011 | |
| 2607:e140::/32 | 4.3B × /64 | ARIN | 5th Nov 2024 | |
| 2607:e240::/40 | 16.8M × /64 | ARIN | 15th Nov 2024 | |
| 2607:e340::/32 | 4.3B × /64 | ARIN | 25th Nov 2024 | |
| 2607:ea80::/32 | 4.3B × /64 | ARIN | 12th Dec 2016 | |
| 2607:ed00::/32 | 4.3B × /64 | ARIN | 2nd Aug 2012 | |
| 2607:ef80::/32 | 4.3B × /64 | ARIN | 16th Dec 2016 | |
| 2607:f090::/32 | 4.3B × /64 | ARIN | 2nd Jul 2007 | |
| 2607:f228::/32 | 4.3B × /64 | ARIN | 7th Nov 2007 | |
| 2607:f230::/32 | 4.3B × /64 | ARIN | 9th Nov 2007 | |
| 2607:f338::/32 | 4.3B × /64 | ARIN | 26th Feb 2008 | |
| 2607:f540::/32 | 4.3B × /64 | ARIN | 18th Jun 2008 | |
| 2607:f890::/32 | 4.3B × /64 | ARIN | 9th Mar 2009 | |
| 2607:fc10::/32 | 4.3B × /64 | ARIN | 24th Jul 2009 | |
| 2607:fc78::/32 | 4.3B × /64 | ARIN | 11th Aug 2009 | |
| 2607:fcf8::/32 | 4.3B × /64 | ARIN | 2nd Sept 2009 | |
| 2607:fe88::/32 | 4.3B × /64 | ARIN | 6th Nov 2009 | |
| 2607:fec8::/32 | 4.3B × /64 | ARIN | 19th Nov 2009 | |
| 2607:ff78::/32 | 4.3B × /64 | ARIN | 6th Jan 2010 | |
| 2610:78::/32 | 4.3B × /64 | ARIN | 19th May 2006 | |
| 2620:0:160::/48 | 65.5k × /64 | ARIN | 27th Dec 2006 | |
| 2620:0:1a40::/48 | 65.5k × /64 | ARIN | 23rd Mar 2009 | |
| 2620:0:22e0::/48 | 65.5k × /64 | ARIN | 22nd Jun 2009 | |
| 2620:0:230::/48 | 65.5k × /64 | ARIN | 13th Feb 2007 | |
| 2620:0:5060::/48 | 65.5k × /64 | ARIN | 6th Jan 2010 | |
| 2620:0:810::/48 | 65.5k × /64 | ARIN | 6th Sept 2007 | |
| 2620:0:bd0::/48 | 65.5k × /64 | ARIN | 6th Feb 2008 | |
| 2620:105::/44 | 1M × /64 | ARIN | 15th Jun 2011 | |
| 2620:10b:3000::/40 | 16.8M × /64 | ARIN | 29th Feb 2012 | |
| 2620:10c:f000::/40 | 16.8M × /64 | ARIN | 18th May 2012 | |
| 2620:10d:e000::/44 | 1M × /64 | ARIN | 13th Jun 2012 | |
| 2620:113:2000::/44 | 1M × /64 | ARIN | 26th Dec 2012 | |
| 2620:116:9000::/40 | 16.8M × /64 | ARIN | 13th Aug 2013 | |
| 2620:116:d000::/40 | 16.8M × /64 | ARIN | 28th Aug 2013 | |
| 2620:116:e000::/40 | 16.8M × /64 | ARIN | 5th Sept 2013 | |
| 2620:11a:1000::/44 | 1M × /64 | ARIN | 11th Jun 2014 | |
| 2620:11c:2000::/40 | 16.8M × /64 | ARIN | 5th Sept 2014 | |
| 2620:11c:c000::/44 | 1M × /64 | ARIN | 24th Oct 2014 | |
| 2620:11d:f000::/40 | 16.8M × /64 | ARIN | 20th Jan 2015 | |
| 2620:11e:d000::/44 | 1M × /64 | ARIN | 26th Mar 2015 | |
| 2620:11f:8000::/40 | 16.8M × /64 | ARIN | 30th Apr 2015 | |
| 2620:123:6000::/44 | 1M × /64 | ARIN | 28th Oct 2015 | |
| 2620:125:5000::/44 | 1M × /64 | ARIN | 27th Jan 2016 | |
| 2620:126:7000::/44 | 1M × /64 | ARIN | 29th Mar 2016 | |
| 2620:126:c000::/44 | 1M × /64 | ARIN | 7th Apr 2016 | |
| 2620:129:7000::/44 | 1M × /64 | ARIN | 29th Aug 2016 | |
| 2620:12a::/40 | 16.8M × /64 | ARIN | 8th Sept 2016 |