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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 Hong Kong SAR China
899 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 43.243.108.0/22 | 1k | APNIC |  HK | 11th Sept 2014 |
| 43.243.160.0/22 | 1k | APNIC | HK | 12th Sept 2014 |
| 43.243.250.0/23 | 512 | APNIC | HK | 25th Oct 2026 |
| 43.243.52.0/22 | 1k | APNIC | HK | 9th Sept 2014 |
| 43.246.204.0/22 | 1k | APNIC | HK | 24th Aug 2015 |
| 43.249.204.0/22 | 1k | APNIC | HK | 15th Oct 2014 |
| 43.249.48.0/22 | 1k | APNIC | HK | 7th Oct 2014 |
| 43.250.64.0/22 | 1k | APNIC | HK | 22nd Oct 2014 |
| 43.251.248.0/22 | 1k | APNIC | HK | 17th Nov 2014 |
| 43.251.44.0/22 | 1k | APNIC | HK | 6th Nov 2014 |
| 43.251.76.0/22 | 1k | APNIC | HK | 7th Nov 2014 |
| 43.252.200.0/22 | 1k | APNIC | HK | 10th Jun 2014 |
| 45.113.140.0/22 | 1k | APNIC | HK | 20th Mar 2015 |
| 45.113.68.0/22 | 1k | APNIC | HK | 16th Mar 2015 |
| 45.114.24.0/22 | 1k | APNIC | HK | 27th Mar 2015 |
| 45.115.160.0/22 | 1k | APNIC | HK | 22nd Apr 2015 |
| 45.116.60.0/22 | 1k | APNIC | HK | 30th Apr 2015 |
| 45.116.64.0/22 | 1k | APNIC | HK | 30th Apr 2015 |
| 45.116.80.0/22 | 1k | APNIC | HK | 1st May 2015 |
| 45.117.56.0/23 | 512 | APNIC | HK | 22nd Aug 2025 |
| 45.121.204.0/22 | 1k | APNIC | HK | 6th Jul 2015 |
| 45.123.112.0/22 | 1k | APNIC | HK | 15th Jul 2015 |
| 45.124.112.0/22 | 1k | APNIC | HK | 23rd Jul 2015 |
| 45.124.160.0/22 | 1k | APNIC | HK | 27th Jul 2015 |
| 45.125.160.0/22 | 1k | APNIC | HK | 5th Aug 2015 |
| 45.126.240.0/22 | 1k | APNIC | HK | 10th Sept 2015 |
| 45.157.68.0/22 | 1k | RIPE NCC | HK | 25th Sept 2019 |
| 45.157.92.0/22 | 1k | RIPE NCC | HK | 25th Sept 2019 |
| 45.249.63.0/24 | 256 | APNIC | HK | 12th Aug 2026 |
| 45.254.252.0/22 | 1k | APNIC | HK | 7th Jun 2016 |
| 45.65.32.0/22 | 1k | APNIC | HK | 7th Mar 2016 |
| 45.82.116.0/22 | 1k | RIPE NCC | HK | 23rd May 2019 |
| 46.175.132.0/24 | 256 | RIPE NCC | HK | 5th Aug 2021 |
| 5.42.216.0/24 | 256 | RIPE NCC | HK | 7th Apr 2022 |
| 58.96.160.0/19 | 8.2k | APNIC | HK | 16th Dec 2010 |
| 59.153.196.0/22 | 1k | APNIC | HK | 21st Oct 2015 |
| 59.153.56.0/22 | 1k | APNIC | HK | 15th Oct 2015 |
| 61.47.88.0/21 | 2k | APNIC | HK | 1st Mar 2005 |
| 62.204.52.0/24 | 256 | RIPE NCC | HK | 11th Oct 2021 |
| 72.4.80.0/21 | 2k | RIPE NCC | HK | 1st Nov 2004 |
| 79.109.16.0/20 | 4.1k | APNIC | HK | 3rd Dec 2007 |
| 79.109.2.0/23 | 512 | APNIC | HK | 3rd Dec 2007 |
| 86.106.124.0/22 | 1k | APNIC | HK | 18th Apr 2005 |
| 87.199.120.0/22 | 1k | APNIC | HK | 28th Jun 2006 |
| 91.190.152.0/24 | 256 | RIPE NCC | HK | 20th Aug 2021 |
| 91.213.155.0/24 | 256 | RIPE NCC | HK | 9th Aug 2021 |
| 91.217.162.0/24 | 256 | RIPE NCC | HK | 8th Nov 2019 |
| 91.238.114.0/24 | 256 | RIPE NCC | HK | 11th Nov 2019 |
| 91.238.213.0/24 | 256 | RIPE NCC | HK | 11th Nov 2019 |