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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 Hong Kong SAR China
899 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 144.98.0.0/16 | 65.5k | RIPE NCC |  HK | 1st Jan 1984 |
| 146.19.174.0/24 | 256 | RIPE NCC | HK | 17th Nov 2021 |
| 150.242.124.0/22 | 1k | APNIC | HK | 3rd Jul 2014 |
| 152.103.0.0/16 | 65.5k | APNIC | HK | 23rd Sept 1993 |
| 154.8.112.0/21 | 2k | APNIC | HK | 5th Feb 1992 |
| 154.8.126.0/23 | 512 | APNIC | HK | 5th Feb 1992 |
| 154.8.64.0/19 | 8.2k | APNIC | HK | 5th Feb 1992 |
| 159.117.40.0/21 | 2k | APNIC | HK | 9th Apr 1992 |
| 159.117.96.0/21 | 2k | APNIC | HK | 9th Apr 1992 |
| 159.200.0.0/18 | 16.4k | RIPE NCC | HK | 1st Sept 1993 |
| 159.200.204.0/24 | 256 | RIPE NCC | HK | 1st Sept 1993 |
| 159.200.224.0/22 | 1k | RIPE NCC | HK | 1st Sept 1993 |
| 159.200.248.0/21 | 2k | RIPE NCC | HK | 1st Sept 1993 |
| 159.200.64.0/20 | 4.1k | RIPE NCC | HK | 1st Sept 1993 |
| 159.200.80.0/22 | 1k | RIPE NCC | HK | 1st Sept 1993 |
| 159.200.84.0/22 | 1k | RIPE NCC | HK | 1st Sept 1993 |
| 159.200.88.0/22 | 1k | RIPE NCC | HK | 1st Sept 1993 |
| 159.200.92.0/22 | 1k | RIPE NCC | HK | 1st Sept 1993 |
| 159.200.96.0/19 | 8.2k | RIPE NCC | HK | 1st Sept 1993 |
| 160.19.48.0/22 | 1k | APNIC | HK | 5th Sept 2016 |
| 160.22.48.0/23 | 512 | APNIC | HK | 4th Jun 2024 |
| 160.236.100.0/23 | 512 | APNIC | HK | 13th Jul 2026 |
| 160.236.214.0/23 | 512 | APNIC | HK | 3rd Aug 2026 |
| 160.236.243.0/24 | 256 | APNIC | HK | 7th Aug 2026 |
| 160.30.76.0/23 | 512 | APNIC | HK | 8th Aug 2024 |
| 162.4.204.0/23 | 512 | APNIC | HK | 2nd Jun 2026 |
| 163.223.72.0/23 | 512 | APNIC | HK | 11th Mar 2025 |
| 163.61.161.0/26 | 64 | APNIC | HK | 8th Sept 2025 |
| 174.138.144.0/20 | 4.1k | APNIC | HK | 31st Dec 2009 |
| 175.176.152.0/22 | 1k | APNIC | HK | 19th Nov 2015 |
| 178.212.78.0/24 | 256 | RIPE NCC | HK | 6th Sept 2021 |
| 180.235.136.0/22 | 1k | APNIC | HK | 3rd Nov 2015 |
| 182.161.32.0/22 | 1k | APNIC | HK | 14th Nov 2017 |
| 185.201.31.0/24 | 256 | RIPE NCC | HK | 25th Jan 2022 |
| 187.53.192.0/20 | 4.1k | APNIC | HK | 13th Mar 2025 |
| 187.55.112.0/20 | 4.1k | APNIC | HK | 13th Mar 2025 |
| 189.10.48.0/20 | 4.1k | APNIC | HK | 13th Mar 2025 |
| 189.75.0.0/20 | 4.1k | APNIC | HK | 13th Mar 2025 |
| 189.75.144.0/20 | 4.1k | APNIC | HK | 13th Mar 2025 |
| 192.135.99.0/24 | 256 | APNIC | HK | 4th Mar 2019 |
| 192.188.82.0/23 | 512 | APNIC | HK | 5th Jan 2018 |
| 192.203.183.0/24 | 256 | APNIC | HK | 7th Feb 2011 |
| 192.203.184.0/23 | 512 | APNIC | HK | 7th Feb 2011 |
| 192.75.137.0/24 | 256 | APNIC | HK | 4th Mar 2019 |
| 193.104.27.0/24 | 256 | RIPE NCC | HK | 31st Mar 2011 |
| 193.105.244.0/23 | 512 | RIPE NCC | HK | 10th Oct 2019 |
| 193.150.8.0/22 | 1k | RIPE NCC | HK | 11th Oct 2011 |
| 193.37.48.0/22 | 1k | RIPE NCC | HK | 12th Sept 2018 |
| 193.84.248.0/23 | 512 | RIPE NCC | HK | 10th Oct 2019 |
| 194.104.139.0/24 | 256 | RIPE NCC | HK | 1st Oct 2021 |