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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 |
|---|---|---|---|---|
| 119.30.48.0/20 | 4.1k | APNIC |  CN | 19th Dec 2007 |
| 119.37.128.0/18 | 16.4k | APNIC | CN | 27th Dec 2007 |
| 119.38.128.0/18 | 16.4k | APNIC | CN | 27th Dec 2007 |
| 119.38.224.0/19 | 8.2k | APNIC | CN | 31st Dec 2007 |
| 119.42.128.0/21 | 2k | APNIC | CN | 12th Apr 2011 |
| 119.44.64.0/18 | 16.4k | APNIC | CN | 3rd Jan 2008 |
| 119.58.0.0/16 | 65.5k | APNIC | CN | 11th Jan 2008 |
| 119.59.128.0/17 | 32.8k | APNIC | CN | 18th Jan 2008 |
| 119.63.32.0/19 | 8.2k | APNIC | CN | 21st Jan 2008 |
| 119.82.208.0/20 | 4.1k | APNIC | CN | 12th Apr 2011 |
| 120.137.0.0/17 | 32.8k | APNIC | CN | 9th Apr 2008 |
| 120.143.128.0/19 | 8.2k | APNIC | CN | 12th Apr 2011 |
| 120.30.0.0/16 | 65.5k | APNIC | CN | 18th Mar 2008 |
| 120.88.8.0/21 | 2k | APNIC | CN | 31st Mar 2009 |
| 120.90.0.0/15 | 131k | APNIC | CN | 28th Mar 2008 |
| 121.0.8.0/21 | 2k | APNIC | CN | 12th Apr 2011 |
| 121.100.128.0/17 | 32.8k | APNIC | CN | 3rd Jul 2006 |
| 121.101.0.0/18 | 16.4k | APNIC | CN | 12th Apr 2011 |
| 121.101.208.0/20 | 4.1k | APNIC | CN | 20th Nov 2007 |
| 121.200.192.0/21 | 2k | APNIC | CN | 12th Apr 2011 |
| 121.46.76.0/22 | 1k | APNIC | CN | 26th Jan 2016 |
| 121.47.0.0/16 | 65.5k | APNIC | CN | 22nd Jun 2006 |
| 121.50.8.0/21 | 2k | APNIC | CN | 12th Apr 2011 |
| 121.54.176.0/21 | 2k | APNIC | CN | 12th Apr 2011 |
| 121.58.136.0/21 | 2k | APNIC | CN | 12th Apr 2011 |
| 121.58.160.0/21 | 2k | APNIC | CN | 12th Apr 2011 |
| 122.0.128.0/17 | 32.8k | APNIC | CN | 7th Jul 2006 |
| 122.10.164.0/22 | 1k | APNIC | CN | 14th Aug 2006 |
| 122.10.168.0/21 | 2k | APNIC | CN | 14th Aug 2006 |
| 122.10.176.0/20 | 4.1k | APNIC | CN | 14th Aug 2006 |
| 122.10.192.0/22 | 1k | APNIC | CN | 14th Aug 2006 |
| 122.10.208.0/21 | 2k | APNIC | CN | 14th Aug 2006 |
| 122.10.216.0/22 | 1k | APNIC | CN | 14th Aug 2006 |
| 122.10.228.0/22 | 1k | APNIC | CN | 14th Aug 2006 |
| 122.10.232.0/21 | 2k | APNIC | CN | 14th Aug 2006 |
| 122.10.240.0/22 | 1k | APNIC | CN | 14th Aug 2006 |
| 122.102.0.0/20 | 4.1k | APNIC | CN | 31st Oct 2006 |
| 122.102.80.0/20 | 4.1k | APNIC | CN | 3rd Nov 2006 |
| 122.115.128.0/19 | 8.2k | APNIC | CN | 18th Sept 2007 |
| 122.115.16.0/20 | 4.1k | APNIC | CN | 18th Sept 2007 |
| 122.115.160.0/19 | 8.2k | APNIC | CN | 18th Sept 2007 |
| 122.115.192.0/19 | 8.2k | APNIC | CN | 18th Sept 2007 |
| 122.115.240.0/20 | 4.1k | APNIC | CN | 18th Sept 2007 |
| 122.12.0.0/16 | 65.5k | APNIC | CN | 14th Aug 2006 |
| 122.128.100.0/22 | 1k | APNIC | CN | 17th Nov 2015 |
| 122.128.120.0/21 | 2k | APNIC | CN | 12th Apr 2011 |
| 122.198.0.0/18 | 16.4k | APNIC | CN | 27th Jul 2006 |
| 122.198.128.0/17 | 32.8k | APNIC | CN | 27th Jul 2006 |
| 122.198.64.0/22 | 1k | APNIC | CN | 27th Jul 2006 |
| 122.198.68.0/22 | 1k | APNIC | CN | 27th Jul 2006 |