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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 |
|---|---|---|---|---|
| 203.84.0.0/18 | 16.4k | APNIC |  HK | 21st Mar 1996 |
| 203.96.164.0/22 | 1k | APNIC | HK | 16th Nov 2018 |
| 203.99.254.0/24 | 256 | APNIC | HK | 17th Nov 2005 |
| 204.110.8.0/21 | 2k | APNIC | HK | 16th Feb 2023 |
| 204.152.224.0/21 | 2k | APNIC | HK | 18th Feb 2009 |
| 204.79.169.0/24 | 256 | ARIN | HK | 14th Dec 1994 |
| 206.220.132.0/22 | 1k | ARIN | HK | 8th Nov 1995 |
| 206.225.128.0/22 | 1k | ARIN | HK | 21st Nov 1995 |
| 210.17.160.0/24 | 256 | APNIC | HK | 24th Jul 2002 |
| 210.17.223.0/24 | 256 | APNIC | HK | 7th Aug 2003 |
| 210.57.128.0/18 | 16.4k | APNIC | HK | 23rd Aug 2001 |
| 216.119.224.0/19 | 8.2k | RIPE NCC | HK | 16th Nov 2000 |
| 216.151.192.0/20 | 4.1k | APNIC | HK | 25th Feb 2010 |
| 216.235.248.0/22 | 1k | RIPE NCC | HK | 13th Oct 1999 |
| 217.194.140.0/22 | 1k | APNIC | HK | 19th Apr 2001 |
| 218.100.16.0/23 | 512 | APNIC | HK | 14th Jan 2004 |
| 220.232.152.0/22 | 1k | APNIC | HK | 19th Nov 2004 |
| 220.232.210.0/24 | 256 | APNIC | HK | 19th Nov 2004 |
| 222.167.48.0/20 | 4.1k | APNIC | HK | 19th Nov 2004 |
| 2400:13a0::/32 | 4.3B × /64 | APNIC | HK | 13th Oct 2021 |
| 2400:1c40::/32 | 4.3B × /64 | APNIC | HK | 14th Nov 2016 |
| 2400:1c80::/32 | 4.3B × /64 | APNIC | HK | 4th Oct 2013 |
| 2400:1e00::/32 | 4.3B × /64 | APNIC | HK | 11th Mar 2010 |
| 2400:3520::/32 | 4.3B × /64 | APNIC | HK | 22nd Nov 2021 |
| 2400:3ec0::/32 | 4.3B × /64 | APNIC | HK | 21st Nov 2016 |
| 2400:4580::/32 | 4.3B × /64 | APNIC | HK | 30th Oct 2013 |
| 2400:4940::/32 | 4.3B × /64 | APNIC | HK | 23rd Nov 2016 |
| 2400:49a0::/32 | 4.3B × /64 | APNIC | HK | 3rd Jan 2022 |
| 2400:4c00::/32 | 4.3B × /64 | APNIC | HK | 22nd Jun 2009 |
| 2400:5340::/32 | 4.3B × /64 | APNIC | HK | 30th Nov 2016 |
| 2400:53c0::/32 | 4.3B × /64 | APNIC | HK | 30th Nov 2016 |
| 2400:5440::/32 | 4.3B × /64 | APNIC | HK | 30th Nov 2016 |
| 2400:5b20::/32 | 4.3B × /64 | APNIC | HK | 16th Feb 2022 |
| 2400:5f80::/32 | 4.3B × /64 | APNIC | HK | 19th Nov 2013 |
| 2400:6c80::/32 | 4.3B × /64 | APNIC | HK | 5th Dec 2013 |
| 2400:6d60::/32 | 4.3B × /64 | APNIC | HK | 8th Apr 2022 |
| 2400:7300::/32 | 4.3B × /64 | APNIC | HK | 19th Apr 2011 |
| 2400:7460::/32 | 4.3B × /64 | APNIC | HK | 26th Apr 2022 |
| 2400:74a0::/32 | 4.3B × /64 | APNIC | HK | 26th Apr 2022 |
| 2400:7e20::/32 | 4.3B × /64 | APNIC | HK | 18th May 2022 |
| 2400:7e40::/32 | 4.3B × /64 | APNIC | HK | 19th Dec 2016 |
| 2400:84c0::/32 | 4.3B × /64 | APNIC | HK | 28th Dec 2016 |
| 2400:8640::/32 | 4.3B × /64 | APNIC | HK | 30th Dec 2016 |
| 2400:8d00::/32 | 4.3B × /64 | APNIC | HK | 28th Apr 2011 |
| 2400:b1c0::/32 | 4.3B × /64 | APNIC | HK | 15th Feb 2017 |
| 2400:bbc0::/32 | 4.3B × /64 | APNIC | HK | 21st Feb 2017 |
| 2400:be40::/32 | 4.3B × /64 | APNIC | HK | 23rd Feb 2017 |
| 2400:be80::/32 | 4.3B × /64 | APNIC | HK | 12th Mar 2014 |
| 2400:bfc0::/32 | 4.3B × /64 | APNIC | HK | 24th Feb 2017 |
| 2400:c680::/32 | 4.3B × /64 | APNIC | HK | 17th Mar 2014 |