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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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
931 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 136.148.80.0/20 | 4.1k | RIPE NCC |  HK | 14th Apr 2004 |
| 138.252.196.0/23 | 512 | APNIC | HK | 13th Nov 2025 |
| 138.252.211.0/24 | 256 | APNIC | HK | 14th Nov 2025 |
| 138.252.60.0/23 | 512 | APNIC | HK | 17th Oct 2025 |
| 138.43.192.0/20 | 4.1k | APNIC | HK | 31st Jan 1990 |
| 139.28.128.0/22 | 1k | APNIC | HK | 2nd Jan 2019 |
| 139.28.132.0/22 | 1k | RIPE NCC | HK | 2nd Jan 2019 |
| 14.192.160.0/19 | 8.2k | APNIC | HK | 28th Sept 2010 |
| 14.192.8.0/22 | 1k | APNIC | HK | 13th Jan 2016 |
| 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 |
| 153.79.176.0/22 | 1k | RIPE NCC | HK | 23rd Sept 1991 |
| 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 |
| 154.8.96.0/20 | 4.1k | APNIC | HK | 5th Feb 1992 |
| 155.137.128.0/17 | 32.8k | APNIC | HK | 12th Nov 1991 |
| 157.119.72.0/22 | 1k | APNIC | HK | 26th Apr 2016 |
| 159.200.0.0/17 | 32.8k | RIPE NCC | HK | 1st Sept 1993 |
| 159.200.128.0/18 | 16.4k | RIPE NCC | HK | 1st Sept 1993 |
| 159.200.192.0/21 | 2k | RIPE NCC | HK | 1st Sept 1993 |
| 159.200.201.0/24 | 256 | RIPE NCC | HK | 1st Sept 1993 |
| 159.200.202.0/23 | 512 | RIPE NCC | HK | 1st Sept 1993 |
| 159.200.204.0/23 | 512 | RIPE NCC | HK | 1st Sept 1993 |
| 159.200.208.0/20 | 4.1k | RIPE NCC | HK | 1st Sept 1993 |
| 159.200.224.0/22 | 1k | RIPE NCC | HK | 1st Sept 1993 |
| 159.200.228.0/23 | 512 | RIPE NCC | HK | 1st Sept 1993 |
| 159.200.234.0/23 | 512 | RIPE NCC | HK | 1st Sept 1993 |
| 159.200.238.0/23 | 512 | RIPE NCC | HK | 1st Sept 1993 |
| 159.200.244.0/23 | 512 | RIPE NCC | HK | 1st Sept 1993 |
| 159.200.248.0/21 | 2k | RIPE NCC | HK | 1st Sept 1993 |
| 160.19.48.0/22 | 1k | APNIC | HK | 5th Sept 2016 |
| 160.22.184.0/23 | 512 | APNIC | HK | 19th Jun 2024 |
| 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 |
| 162.4.114.0/23 | 512 | APNIC | HK | 12th May 2026 |
| 162.4.204.0/23 | 512 | APNIC | HK | 2nd Jun 2026 |
| 163.223.72.0/23 | 512 | APNIC | HK | 11th Mar 2025 |
| 163.227.82.0/23 | 512 | APNIC | HK | 16th Apr 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 |
| 178.107.32.0/20 | 4.1k | APNIC | HK | 18th Nov 2009 |
| 180.235.136.0/22 | 1k | APNIC | HK | 3rd Nov 2015 |
| 182.161.32.0/22 | 1k | APNIC | HK | 14th Nov 2017 |