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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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
6,735 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 110.92.68.0/22 | 1k | APNIC |  CN | 19th Nov 2015 |
| 110.93.32.0/19 | 8.2k | APNIC | CN | 12th Apr 2011 |
| 110.94.0.0/15 | 131k | APNIC | CN | 15th Apr 2009 |
| 111.119.128.0/19 | 8.2k | APNIC | CN | 3rd Jul 2009 |
| 111.119.64.0/18 | 16.4k | APNIC | CN | 3rd Jul 2009 |
| 111.223.16.0/22 | 1k | APNIC | CN | 8th Jan 2016 |
| 111.223.240.0/22 | 1k | APNIC | CN | 19th Apr 2010 |
| 111.223.248.0/22 | 1k | APNIC | CN | 19th Apr 2010 |
| 111.223.4.0/22 | 1k | APNIC | CN | 8th Jan 2016 |
| 111.235.96.0/19 | 8.2k | APNIC | CN | 14th Aug 2009 |
| 111.67.192.0/20 | 4.1k | APNIC | CN | 4th Jun 2009 |
| 111.68.64.0/19 | 8.2k | APNIC | CN | 10th Jun 2009 |
| 111.92.248.0/22 | 1k | APNIC | CN | 19th Nov 2015 |
| 111.92.252.0/22 | 1k | APNIC | CN | 19th Nov 2015 |
| 112.128.0.0/14 | 262k | APNIC | CN | 22nd Jan 2009 |
| 112.137.48.0/21 | 2k | APNIC | CN | 12th Apr 2011 |
| 113.11.192.0/19 | 8.2k | APNIC | CN | 29th Sept 2008 |
| 113.192.40.0/23 | 512 | APNIC | CN | 8th Dec 2023 |
| 113.202.0.0/16 | 65.5k | APNIC | CN | 28th Nov 2008 |
| 113.208.128.0/17 | 32.8k | APNIC | CN | 5th Dec 2008 |
| 113.212.0.0/18 | 16.4k | APNIC | CN | 5th Dec 2008 |
| 113.212.100.0/22 | 1k | APNIC | CN | 29th Dec 2010 |
| 113.212.184.0/21 | 2k | APNIC | CN | 12th Apr 2011 |
| 113.52.160.0/19 | 8.2k | APNIC | CN | 23rd Oct 2008 |
| 113.52.228.0/22 | 1k | APNIC | CN | 19th Nov 2015 |
| 114.111.160.0/20 | 4.1k | APNIC | CN | 27th May 2008 |
| 114.119.208.0/20 | 4.1k | APNIC | CN | 23rd May 2008 |
| 114.119.224.0/19 | 8.2k | APNIC | CN | 23rd May 2008 |
| 114.141.64.0/21 | 2k | APNIC | CN | 12th Apr 2011 |
| 114.141.80.0/22 | 1k | APNIC | CN | 19th Nov 2015 |
| 114.141.84.0/22 | 1k | APNIC | CN | 19th Nov 2015 |
| 114.142.136.0/21 | 2k | APNIC | CN | 24th Jun 2008 |
| 114.198.248.0/21 | 2k | APNIC | CN | 12th Apr 2011 |
| 114.208.0.0/14 | 262k | APNIC | CN | 20th Jun 2008 |
| 114.31.64.0/22 | 1k | APNIC | CN | 19th Nov 2015 |
| 114.31.68.0/22 | 1k | APNIC | CN | 19th Nov 2015 |
| 114.68.0.0/16 | 65.5k | APNIC | CN | 9th May 2008 |
| 114.79.64.0/18 | 16.4k | APNIC | CN | 12th Apr 2011 |
| 115.104.0.0/14 | 262k | APNIC | CN | 28th Jul 2008 |
| 115.166.64.0/19 | 8.2k | APNIC | CN | 12th Apr 2011 |
| 115.181.0.0/16 | 65.5k | APNIC | CN | 4th Sept 2008 |
| 115.187.0.0/22 | 1k | APNIC | CN | 30th Nov 2015 |
| 115.187.12.0/22 | 1k | APNIC | CN | 30th Nov 2015 |
| 115.187.4.0/22 | 1k | APNIC | CN | 30th Nov 2015 |
| 115.187.8.0/22 | 1k | APNIC | CN | 30th Nov 2015 |
| 115.31.68.0/22 | 1k | APNIC | CN | 30th Nov 2015 |
| 115.31.72.0/22 | 1k | APNIC | CN | 30th Nov 2015 |
| 115.31.76.0/22 | 1k | APNIC | CN | 30th Nov 2015 |
| 115.42.56.0/22 | 1k | APNIC | CN | 8th Jan 2016 |
| 115.47.0.0/16 | 65.5k | APNIC | CN | 11th Jul 2008 |