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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 in Hong Kong SAR China
931 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 2406:9c00::/32 | 4.3B × /64 | APNIC |  HK | 22nd Feb 2010 |
| 2406:bcc0::/32 | 4.3B × /64 | APNIC | HK | 12th Nov 2020 |
| 2406:d4c0::/32 | 4.3B × /64 | APNIC | HK | 2nd Dec 2020 |
| 2406:fb80::/32 | 4.3B × /64 | APNIC | HK | 30th Aug 2016 |
| 2407:1080::/32 | 4.3B × /64 | APNIC | HK | 1st Sept 2016 |
| 2407:1380::/32 | 4.3B × /64 | APNIC | HK | 1st Sept 2016 |
| 2407:1540::/32 | 4.3B × /64 | APNIC | HK | 2nd Feb 2021 |
| 2407:1b80::/32 | 4.3B × /64 | APNIC | HK | 2nd Sept 2016 |
| 2407:1c40::/32 | 4.3B × /64 | APNIC | HK | 11th Feb 2021 |
| 2407:21c0::/32 | 4.3B × /64 | APNIC | HK | 17th Feb 2021 |
| 2407:2340::/32 | 4.3B × /64 | APNIC | HK | 21st Feb 2021 |
| 2407:2940::/32 | 4.3B × /64 | APNIC | HK | 1st Mar 2021 |
| 2407:3240::/32 | 4.3B × /64 | APNIC | HK | 10th Mar 2021 |
| 2407:3980::/32 | 4.3B × /64 | APNIC | HK | 13th Sept 2016 |
| 2407:3bc0::/32 | 4.3B × /64 | APNIC | HK | 19th Mar 2021 |
| 2407:3c40::/32 | 4.3B × /64 | APNIC | HK | 19th Mar 2021 |
| 2407:3d80::/32 | 4.3B × /64 | APNIC | HK | 14th Sept 2016 |
| 2407:3fc0::/32 | 4.3B × /64 | APNIC | HK | 23rd Mar 2021 |
| 2407:4340::/32 | 4.3B × /64 | APNIC | HK | 25th Mar 2021 |
| 2407:6080::/32 | 4.3B × /64 | APNIC | HK | 27th Sept 2016 |
| 2407:6880::/32 | 4.3B × /64 | APNIC | HK | 30th Sept 2016 |
| 2407:7280::/32 | 4.3B × /64 | APNIC | HK | 5th Oct 2016 |
| 2407:8480::/32 | 4.3B × /64 | APNIC | HK | 12th Oct 2016 |
| 2407:900::/32 | 4.3B × /64 | APNIC | HK | 27th May 2013 |
| 2407:a700::/32 | 4.3B × /64 | APNIC | HK | 30th Jul 2013 |
| 2407:a80::/32 | 4.3B × /64 | APNIC | HK | 1st Sept 2016 |
| 2407:a980::/32 | 4.3B × /64 | APNIC | HK | 1st Nov 2016 |
| 2407:d340::/32 | 4.3B × /64 | APNIC | HK | 30th Aug 2021 |
| 2407:d5c0::/32 | 4.3B × /64 | APNIC | HK | 31st Aug 2021 |
| 2407:e100::/32 | 4.3B × /64 | APNIC | HK | 5th Sept 2013 |
| 2407:e300::/32 | 4.3B × /64 | APNIC | HK | 6th Sept 2013 |
| 2407:e301::/32 | 4.3B × /64 | APNIC | HK | 9th Sept 2015 |
| 2602:f5f1::/40 | 16.8M × /64 | ARIN | HK | 8th Jul 2025 |
| 27.100.16.0/21 | 2k | APNIC | HK | 31st May 2010 |
| 27.122.12.0/22 | 1k | APNIC | HK | 4th Oct 2010 |
| 2a01:9c0::/29 | 34.4B × /64 | RIPE NCC | HK | 1st Jun 2026 |
| 2a02:810::/32 | 4.3B × /64 | RIPE NCC | HK | 19th Dec 2008 |
| 2a03:5f40::/32 | 4.3B × /64 | RIPE NCC | HK | 15th Nov 2012 |
| 2a05:a300::/29 | 34.4B × /64 | RIPE NCC | HK | 8th Jan 2019 |
| 2a09:42c0::/29 | 34.4B × /64 | RIPE NCC | HK | 4th Feb 2019 |
| 2a09:4f80::/29 | 34.4B × /64 | RIPE NCC | HK | 8th Jun 2021 |
| 2a09:640::/29 | 34.4B × /64 | RIPE NCC | HK | 2nd Jan 2019 |
| 2a0a:a880::/29 | 34.4B × /64 | RIPE NCC | HK | 13th Jan 2020 |
| 2a0c:640::/29 | 34.4B × /64 | RIPE NCC | HK | 15th Mar 2018 |
| 2a0c:f480::/29 | 34.4B × /64 | RIPE NCC | HK | 24th Jan 2018 |
| 2a0d:2480::/29 | 34.4B × /64 | RIPE NCC | HK | 31st Jan 2018 |
| 2a0d:5340::/29 | 34.4B × /64 | RIPE NCC | HK | 19th Aug 2019 |
| 2a0d:6a40::/29 | 34.4B × /64 | RIPE NCC | HK | 13th Sept 2018 |
| 2a0d:6b40::/29 | 34.4B × /64 | RIPE NCC | HK | 13th Sept 2018 |
| 2a0d:6ec0::/29 | 34.4B × /64 | RIPE NCC | HK | 13th Sept 2018 |