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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 |
|---|---|---|---|---|
| 2602:802:7000::/40 | 16.8M × /64 | ARIN |  CA | 4th Dec 2019 |
| 2602:808:9000::/44 | 1M × /64 | ARIN | CA | 17th Nov 2020 |
| 2602:80a:3000::/44 | 1M × /64 | ARIN | CA | 24th Mar 2021 |
| 2602:80e:9000::/44 | 1M × /64 | ARIN | CA | 20th Jan 2022 |
| 2602:810:8000::/44 | 1M × /64 | ARIN | CA | 12th Aug 2022 |
| 2602:812:6000::/44 | 1M × /64 | ARIN | CA | 6th Mar 2023 |
| 2602:815:a000::/44 | 1M × /64 | ARIN | CA | 16th Aug 2023 |
| 2602:81d:1000::/40 | 16.8M × /64 | ARIN | CA | 15th Jan 2026 |
| 2602:81e:1000::/44 | 1M × /64 | ARIN | CA | 12th Jun 2026 |
| 2602:f311::/40 | 16.8M × /64 | ARIN | CA | 20th Aug 2026 |
| 2602:f314::/40 | 16.8M × /64 | ARIN | CA | 20th Aug 2026 |
| 2602:f31b::/40 | 16.8M × /64 | ARIN | CA | 14th Aug 2026 |
| 2602:f31c::/40 | 16.8M × /64 | ARIN | CA | 14th Aug 2026 |
| 2602:f332::/40 | 16.8M × /64 | ARIN | CA | 31st Jul 2026 |
| 2602:f350::/36 | 268M × /64 | ARIN | CA | 14th Jul 2026 |
| 2602:f35e::/40 | 16.8M × /64 | ARIN | CA | 8th Jul 2026 |
| 2602:f37c::/40 | 16.8M × /64 | ARIN | CA | 18th Jun 2026 |
| 2602:f384::/36 | 268M × /64 | ARIN | CA | 17th Jun 2026 |
| 2602:f3a4::/40 | 16.8M × /64 | ARIN | CA | 29th May 2026 |
| 2602:f3aa::/36 | 268M × /64 | ARIN | CA | 27th May 2026 |
| 2602:f3b9::/36 | 268M × /64 | ARIN | CA | 18th May 2026 |
| 2602:f3c5::/40 | 16.8M × /64 | ARIN | CA | 12th May 2026 |
| 2602:f3d1::/40 | 16.8M × /64 | ARIN | CA | 4th May 2026 |
| 2602:f3d2::/40 | 16.8M × /64 | ARIN | CA | 1st May 2026 |
| 2602:f3d6::/40 | 16.8M × /64 | ARIN | CA | 29th Apr 2026 |
| 2602:f3ef::/40 | 16.8M × /64 | ARIN | CA | 16th Apr 2026 |
| 2602:f3f1::/36 | 268M × /64 | ARIN | CA | 15th Apr 2026 |
| 2602:f41a::/40 | 16.8M × /64 | ARIN | CA | 23rd Mar 2026 |
| 2602:f432::/40 | 16.8M × /64 | ARIN | CA | 11th Mar 2026 |
| 2602:f44a::/40 | 16.8M × /64 | ARIN | CA | 23rd Feb 2026 |
| 2602:f462::/36 | 268M × /64 | ARIN | CA | 12th Feb 2026 |
| 2602:f49f::/40 | 16.8M × /64 | ARIN | CA | 9th Dec 2025 |
| 2602:f4b1::/40 | 16.8M × /64 | ARIN | CA | 25th Nov 2025 |
| 2602:f4ce::/40 | 16.8M × /64 | ARIN | CA | 12th Nov 2025 |
| 2602:f544::/36 | 268M × /64 | ARIN | CA | 29th Sept 2025 |
| 2602:f554::/36 | 268M × /64 | ARIN | CA | 19th Sept 2025 |
| 2602:f555::/40 | 16.8M × /64 | ARIN | CA | 19th Sept 2025 |
| 2602:f5a2::/40 | 16.8M × /64 | ARIN | CA | 6th Aug 2025 |
| 2602:f5b2::/36 | 268M × /64 | ARIN | CA | 30th Jul 2025 |
| 2602:f5c5::/36 | 268M × /64 | ARIN | CA | 22nd Jul 2025 |
| 2602:f5d7::/36 | 268M × /64 | ARIN | CA | 17th Jul 2025 |
| 2602:f5e2::/40 | 16.8M × /64 | ARIN | CA | 14th Jul 2025 |
| 2602:f633::/40 | 16.8M × /64 | ARIN | CA | 30th May 2025 |
| 2602:f657::/36 | 268M × /64 | ARIN | CA | 7th May 2025 |
| 2602:f65e::/40 | 16.8M × /64 | ARIN | CA | 5th May 2025 |
| 2602:f674::/40 | 16.8M × /64 | ARIN | CA | 18th Apr 2025 |
| 2602:f69f::/40 | 16.8M × /64 | ARIN | CA | 31st Mar 2025 |
| 2602:f6aa::/36 | 268M × /64 | ARIN | CA | 24th Mar 2025 |
| 2602:f6b4::/40 | 16.8M × /64 | ARIN | CA | 19th Mar 2025 |
| 2602:f738::/40 | 16.8M × /64 | ARIN | CA | 13th Jan 2025 |