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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 China
6,732 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 59.153.136.0/22 | 1k | APNIC |  CN | 21st Oct 2015 |
| 59.153.152.0/22 | 1k | APNIC | CN | 21st Oct 2015 |
| 59.153.172.0/22 | 1k | APNIC | CN | 21st Oct 2015 |
| 59.153.176.0/22 | 1k | APNIC | CN | 21st Oct 2015 |
| 59.153.180.0/22 | 1k | APNIC | CN | 21st Oct 2015 |
| 59.153.184.0/22 | 1k | APNIC | CN | 21st Oct 2015 |
| 59.153.188.0/22 | 1k | APNIC | CN | 21st Oct 2015 |
| 59.153.192.0/22 | 1k | APNIC | CN | 21st Oct 2015 |
| 59.153.60.0/22 | 1k | APNIC | CN | 15th Oct 2015 |
| 59.153.64.0/22 | 1k | APNIC | CN | 15th Oct 2015 |
| 59.153.68.0/22 | 1k | APNIC | CN | 15th Oct 2015 |
| 59.153.72.0/22 | 1k | APNIC | CN | 15th Oct 2015 |
| 59.155.0.0/16 | 65.5k | APNIC | CN | 20th Oct 2006 |
| 59.191.0.0/17 | 32.8k | APNIC | CN | 23rd Dec 2004 |
| 59.43.0.0/16 | 65.5k | APNIC | CN | 20th May 2005 |
| 59.83.0.0/17 | 32.8k | APNIC | CN | 17th Aug 2004 |
| 60.55.0.0/16 | 65.5k | APNIC | CN | 2nd Aug 2004 |
| 61.14.212.0/22 | 1k | APNIC | CN | 26th Nov 2015 |
| 61.14.216.0/22 | 1k | APNIC | CN | 26th Nov 2015 |
| 61.14.220.0/22 | 1k | APNIC | CN | 26th Nov 2015 |
| 61.14.240.0/22 | 1k | APNIC | CN | 29th Dec 2015 |
| 61.14.244.0/22 | 1k | APNIC | CN | 30th Dec 2015 |
| 61.28.0.0/20 | 4.1k | APNIC | CN | 28th Mar 2001 |
| 61.29.192.0/19 | 8.2k | APNIC | CN | 10th Dec 2004 |
| 61.29.224.0/20 | 4.1k | APNIC | CN | 10th Dec 2004 |
| 61.4.176.0/20 | 4.1k | APNIC | CN | 29th Jan 2007 |
| 61.4.84.0/22 | 1k | APNIC | CN | 14th Apr 2011 |
| 61.4.88.0/21 | 2k | APNIC | CN | 12th Apr 2011 |
| 61.45.128.0/18 | 16.4k | APNIC | CN | 31st Jan 2005 |
| 61.45.224.0/20 | 4.1k | APNIC | CN | 12th Apr 2011 |
| 61.8.160.0/20 | 4.1k | APNIC | CN | 7th Aug 2006 |
| 74.122.26.0/23 | 512 | RIPE NCC | CN | 12th Jul 2019 |