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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 unannounced space registered through APNIC, largest first.
Unannounced blocks in China
6,720 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 157.66.92.0/23 | 512 | APNIC |  CN | 9th Apr 2024 |
| 157.66.94.0/23 | 512 | APNIC | CN | 10th Apr 2024 |
| 158.60.0.0/16 | 65.5k | APNIC | CN | 14th Feb 1992 |
| 158.79.0.0/16 | 65.5k | APNIC | CN | 17th Feb 1992 |
| 160.187.223.0/24 | 256 | APNIC | CN | 9th Oct 2024 |
| 160.187.252.0/23 | 512 | APNIC | CN | 11th Oct 2024 |
| 160.187.254.0/23 | 512 | APNIC | CN | 11th Oct 2024 |
| 160.19.212.0/22 | 1k | APNIC | CN | 3rd Mar 2016 |
| 160.19.216.0/22 | 1k | APNIC | CN | 3rd Mar 2016 |
| 160.19.82.0/23 | 512 | APNIC | CN | 14th May 2024 |
| 160.191.104.0/23 | 512 | APNIC | CN | 25th Oct 2024 |
| 160.191.110.0/23 | 512 | APNIC | CN | 27th Oct 2024 |
| 160.20.130.0/23 | 512 | APNIC | CN | 23rd May 2024 |
| 160.20.16.0/23 | 512 | APNIC | CN | 16th May 2024 |
| 160.20.48.0/22 | 1k | APNIC | CN | 4th Mar 2016 |
| 160.202.148.0/22 | 1k | APNIC | CN | 31st Mar 2016 |
| 160.202.216.0/22 | 1k | APNIC | CN | 2nd Apr 2016 |
| 160.202.220.0/22 | 1k | APNIC | CN | 2nd Apr 2016 |
| 160.22.148.0/23 | 512 | APNIC | CN | 14th Jun 2024 |
| 160.22.224.0/23 | 512 | APNIC | CN | 20th Jun 2024 |
| 160.22.230.0/23 | 512 | APNIC | CN | 24th Jun 2024 |
| 160.22.244.0/23 | 512 | APNIC | CN | 25th Jun 2024 |
| 160.22.246.0/23 | 512 | APNIC | CN | 25th Jun 2024 |
| 160.22.58.0/23 | 512 | APNIC | CN | 5th Jun 2024 |
| 160.22.82.0/23 | 512 | APNIC | CN | 6th Jun 2024 |
| 160.236.148.0/23 | 512 | APNIC | CN | 23rd Jul 2026 |
| 160.236.162.0/23 | 512 | APNIC | CN | 27th Jul 2026 |
| 160.236.250.0/23 | 512 | APNIC | CN | 10th Aug 2026 |
| 160.236.78.0/23 | 512 | APNIC | CN | 8th Jul 2026 |
| 160.25.10.0/23 | 512 | APNIC | CN | 27th Jun 2024 |
| 160.25.12.0/23 | 512 | APNIC | CN | 27th Jun 2024 |
| 160.250.102.0/23 | 512 | APNIC | CN | 27th Nov 2024 |
| 160.250.104.0/23 | 512 | APNIC | CN | 28th Nov 2024 |
| 160.250.16.0/23 | 512 | APNIC | CN | 15th Nov 2024 |
| 160.250.160.0/23 | 512 | APNIC | CN | 3rd Dec 2024 |
| 160.250.170.0/23 | 512 | APNIC | CN | 5th Dec 2024 |
| 160.250.18.0/23 | 512 | APNIC | CN | 15th Nov 2024 |
| 160.250.214.0/23 | 512 | APNIC | CN | 12th Dec 2024 |
| 160.250.252.0/23 | 512 | APNIC | CN | 20th Dec 2024 |
| 160.250.90.0/23 | 512 | APNIC | CN | 27th Nov 2024 |
| 160.30.194.0/23 | 512 | APNIC | CN | 27th Aug 2024 |
| 160.30.196.0/23 | 512 | APNIC | CN | 27th Aug 2024 |
| 160.30.198.0/23 | 512 | APNIC | CN | 27th Aug 2024 |
| 160.30.40.0/23 | 512 | APNIC | CN | 30th Jul 2024 |
| 161.248.110.0/23 | 512 | APNIC | CN | 7th Jan 2025 |
| 161.248.20.0/23 | 512 | APNIC | CN | 23rd Dec 2024 |
| 161.248.42.0/23 | 512 | APNIC | CN | 26th Dec 2024 |
| 161.248.92.0/23 | 512 | APNIC | CN | 3rd Jan 2025 |
| 162.4.168.0/23 | 512 | APNIC | CN | 22nd May 2026 |
| 162.4.198.0/23 | 512 | APNIC | CN | 28th May 2026 |