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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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
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Countries with the most unannounced blocks, largest first.
Unannounced blocks in Canada
3,819 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 2606:d7c0::/32 | 4.3B × /64 | ARIN |  CA | 31st May 2022 |
| 2606:dd80::/32 | 4.3B × /64 | ARIN | CA | 23rd Dec 2015 |
| 2606:de00::/32 | 4.3B × /64 | ARIN | CA | 16th Feb 2011 |
| 2606:dec0::/32 | 4.3B × /64 | ARIN | CA | 27th Jun 2022 |
| 2606:df40::/32 | 4.3B × /64 | ARIN | CA | 28th Jun 2022 |
| 2606:dfc0::/32 | 4.3B × /64 | ARIN | CA | 30th Jun 2022 |
| 2606:e1c0::/32 | 4.3B × /64 | ARIN | CA | 7th Jul 2022 |
| 2606:e380::/32 | 4.3B × /64 | ARIN | CA | 5th Jan 2016 |
| 2606:eac0::/32 | 4.3B × /64 | ARIN | CA | 9th Aug 2022 |
| 2606:eb00::/32 | 4.3B × /64 | ARIN | CA | 6th Feb 2012 |
| 2606:eb40::/32 | 4.3B × /64 | ARIN | CA | 10th Aug 2022 |
| 2606:ee00::/32 | 4.3B × /64 | ARIN | CA | 16th Feb 2011 |
| 2606:eec0::/32 | 4.3B × /64 | ARIN | CA | 19th Aug 2022 |
| 2606:f2c0::/32 | 4.3B × /64 | ARIN | CA | 26th Aug 2022 |
| 2606:f3c0::/32 | 4.3B × /64 | ARIN | CA | 31st Aug 2022 |
| 2606:f880::/32 | 4.3B × /64 | ARIN | CA | 10th Feb 2016 |
| 2607:100::/32 | 4.3B × /64 | ARIN | CA | 22nd Feb 2012 |
| 2607:2880::/32 | 4.3B × /64 | ARIN | CA | 5th Apr 2016 |
| 2607:2d00::/32 | 4.3B × /64 | ARIN | CA | 19th Mar 2012 |
| 2607:3380::/32 | 4.3B × /64 | ARIN | CA | 20th Apr 2016 |
| 2607:3ac0::/32 | 4.3B × /64 | ARIN | CA | 5th Apr 2023 |
| 2607:3b80::/32 | 4.3B × /64 | ARIN | CA | 9th Jun 2026 |
| 2607:4c00::/32 | 4.3B × /64 | ARIN | CA | 4th Oct 2010 |
| 2607:5340::/32 | 4.3B × /64 | ARIN | CA | 13th Jun 2023 |
| 2607:5900::/32 | 4.3B × /64 | ARIN | CA | 9th Jun 2026 |
| 2607:6680::/32 | 4.3B × /64 | ARIN | CA | 30th Jun 2016 |
| 2607:6ac0::/32 | 4.3B × /64 | ARIN | CA | 11th Sept 2023 |
| 2607:6c80::/32 | 4.3B × /64 | ARIN | CA | 8th Jul 2016 |
| 2607:6e80::/32 | 4.3B × /64 | ARIN | CA | 13th Jul 2016 |
| 2607:6f80::/32 | 4.3B × /64 | ARIN | CA | 14th Jul 2016 |
| 2607:7600::/32 | 4.3B × /64 | ARIN | CA | 4th Mar 2011 |
| 2607:7c0::/32 | 4.3B × /64 | ARIN | CA | 15th Nov 2022 |
| 2607:7e00::/32 | 4.3B × /64 | ARIN | CA | 4th Mar 2011 |
| 2607:83c0::/32 | 4.3B × /64 | ARIN | CA | 8th Dec 2023 |
| 2607:85c0::/32 | 4.3B × /64 | ARIN | CA | 19th Dec 2023 |
| 2607:8880::/32 | 4.3B × /64 | ARIN | CA | 17th Aug 2016 |
| 2607:8b40::/32 | 4.3B × /64 | ARIN | CA | 16th Jan 2024 |
| 2607:8e80::/32 | 4.3B × /64 | ARIN | CA | 24th Aug 2016 |
| 2607:9500::/32 | 4.3B × /64 | ARIN | CA | 5th Jun 2012 |
| 2607:9980::/32 | 4.3B × /64 | ARIN | CA | 2nd Sept 2016 |
| 2607:9a40::/32 | 4.3B × /64 | ARIN | CA | 23rd Feb 2024 |
| 2607:a00::/32 | 4.3B × /64 | ARIN | CA | 22nd Feb 2011 |
| 2607:ae00::/32 | 4.3B × /64 | ARIN | CA | 9th Mar 2011 |
| 2607:b240::/32 | 4.3B × /64 | ARIN | CA | 2nd May 2024 |
| 2607:b5c0::/32 | 4.3B × /64 | ARIN | CA | 15th May 2024 |
| 2607:b980::/32 | 4.3B × /64 | ARIN | CA | 21st Oct 2016 |
| 2607:be00::/32 | 4.3B × /64 | ARIN | CA | 10th Mar 2011 |
| 2607:c0c0::/32 | 4.3B × /64 | ARIN | CA | 28th Jun 2024 |
| 2607:c180::/32 | 4.3B × /64 | ARIN | CA | 31st Oct 2016 |
| 2607:ccc0::/32 | 4.3B × /64 | ARIN | CA | 9th Aug 2024 |