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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 unannounced space registered through APNIC, largest first.
Unannounced blocks in China
6,720 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 103.65.206.0/23 | 512 | APNIC |  CN | 5th Jan 2023 |
| 103.65.4.0/22 | 1k | APNIC | CN | 7th Jun 2016 |
| 103.65.48.0/22 | 1k | APNIC | CN | 8th Jun 2016 |
| 103.65.52.0/22 | 1k | APNIC | CN | 8th Jun 2016 |
| 103.65.56.0/22 | 1k | APNIC | CN | 8th Jun 2016 |
| 103.65.60.0/22 | 1k | APNIC | CN | 8th Jun 2016 |
| 103.65.64.0/22 | 1k | APNIC | CN | 8th Jun 2016 |
| 103.65.68.0/22 | 1k | APNIC | CN | 8th Jun 2016 |
| 103.65.72.0/22 | 1k | APNIC | CN | 8th Jun 2016 |
| 103.65.76.0/22 | 1k | APNIC | CN | 8th Jun 2016 |
| 103.65.80.0/22 | 1k | APNIC | CN | 8th Jun 2016 |
| 103.65.84.0/22 | 1k | APNIC | CN | 8th Jun 2016 |
| 103.65.88.0/22 | 1k | APNIC | CN | 8th Jun 2016 |
| 103.65.92.0/22 | 1k | APNIC | CN | 8th Jun 2016 |
| 103.66.108.0/22 | 1k | APNIC | CN | 16th Jun 2016 |
| 103.66.200.0/22 | 1k | APNIC | CN | 20th Jun 2016 |
| 103.66.240.0/22 | 1k | APNIC | CN | 22nd Jun 2016 |
| 103.66.244.0/22 | 1k | APNIC | CN | 22nd Jun 2016 |
| 103.66.248.0/22 | 1k | APNIC | CN | 22nd Jun 2016 |
| 103.66.252.0/22 | 1k | APNIC | CN | 22nd Jun 2016 |
| 103.66.40.0/22 | 1k | APNIC | CN | 14th Jun 2016 |
| 103.67.0.0/22 | 1k | APNIC | CN | 22nd Jun 2016 |
| 103.67.100.0/22 | 1k | APNIC | CN | 23rd Jun 2016 |
| 103.67.104.0/22 | 1k | APNIC | CN | 23rd Jun 2016 |
| 103.67.108.0/22 | 1k | APNIC | CN | 23rd Jun 2016 |
| 103.67.112.0/22 | 1k | APNIC | CN | 23rd Jun 2016 |
| 103.67.116.0/22 | 1k | APNIC | CN | 23rd Jun 2016 |
| 103.67.120.0/22 | 1k | APNIC | CN | 23rd Jun 2016 |
| 103.67.124.0/22 | 1k | APNIC | CN | 23rd Jun 2016 |
| 103.67.128.0/22 | 1k | APNIC | CN | 23rd Jun 2016 |
| 103.67.132.0/22 | 1k | APNIC | CN | 23rd Jun 2016 |
| 103.67.136.0/22 | 1k | APNIC | CN | 23rd Jun 2016 |
| 103.67.140.0/22 | 1k | APNIC | CN | 23rd Jun 2016 |
| 103.67.144.0/22 | 1k | APNIC | CN | 23rd Jun 2016 |
| 103.67.148.0/22 | 1k | APNIC | CN | 23rd Jun 2016 |
| 103.67.172.0/22 | 1k | APNIC | CN | 24th Jun 2016 |
| 103.67.192.0/22 | 1k | APNIC | CN | 24th Jun 2016 |
| 103.67.212.0/22 | 1k | APNIC | CN | 27th Jun 2016 |
| 103.67.252.0/22 | 1k | APNIC | CN | 29th Jun 2016 |
| 103.67.4.0/22 | 1k | APNIC | CN | 22nd Jun 2016 |
| 103.67.8.0/22 | 1k | APNIC | CN | 22nd Jun 2016 |
| 103.68.100.0/22 | 1k | APNIC | CN | 1st Jul 2016 |
| 103.68.64.0/22 | 1k | APNIC | CN | 30th Jun 2016 |
| 103.68.88.0/22 | 1k | APNIC | CN | 30th Jun 2016 |
| 103.69.62.0/23 | 512 | APNIC | CN | 16th Jan 2023 |
| 103.7.212.0/22 | 1k | APNIC | CN | 2nd Apr 2012 |
| 103.7.216.0/22 | 1k | APNIC | CN | 2nd Apr 2012 |
| 103.7.220.0/22 | 1k | APNIC | CN | 2nd Apr 2012 |
| 103.70.14.0/23 | 512 | APNIC | CN | 18th Jan 2023 |
| 103.70.148.0/22 | 1k | APNIC | CN | 29th Jul 2016 |