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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 |
|---|---|---|---|---|
| 175.111.148.0/22 | 1k | APNIC |  CN | 29th Jan 2016 |
| 175.111.152.0/22 | 1k | APNIC | CN | 29th Jan 2016 |
| 175.111.156.0/22 | 1k | APNIC | CN | 29th Jan 2016 |
| 175.111.160.0/22 | 1k | APNIC | CN | 29th Jan 2016 |
| 175.111.164.0/22 | 1k | APNIC | CN | 29th Jan 2016 |
| 175.111.168.0/22 | 1k | APNIC | CN | 29th Jan 2016 |
| 175.111.172.0/22 | 1k | APNIC | CN | 29th Jan 2016 |
| 175.111.184.0/22 | 1k | APNIC | CN | 29th Jan 2016 |
| 175.158.96.0/22 | 1k | APNIC | CN | 19th Nov 2015 |
| 175.176.156.0/22 | 1k | APNIC | CN | 19th Nov 2015 |
| 175.176.176.0/22 | 1k | APNIC | CN | 30th Nov 2015 |
| 175.176.188.0/22 | 1k | APNIC | CN | 1st Dec 2015 |
| 175.26.0.0/16 | 65.5k | APNIC | CN | 4th Dec 2009 |
| 175.48.0.0/12 | 1M | APNIC | CN | 14th Dec 2009 |
| 175.64.0.0/11 | 2.1M | APNIC | CN | 14th Dec 2009 |
| 180.148.152.0/21 | 2k | APNIC | CN | 12th Apr 2011 |
| 180.148.16.0/21 | 2k | APNIC | CN | 12th Apr 2011 |
| 180.148.216.0/21 | 2k | APNIC | CN | 12th Apr 2011 |
| 180.148.224.0/19 | 8.2k | APNIC | CN | 31st Aug 2009 |
| 180.178.112.0/22 | 1k | APNIC | CN | 19th Nov 2015 |
| 180.178.116.0/22 | 1k | APNIC | CN | 19th Nov 2015 |
| 180.187.0.0/16 | 65.5k | APNIC | CN | 15th Sept 2009 |
| 180.188.0.0/20 | 4.1k | APNIC | CN | 16th Sept 2009 |
| 180.188.48.0/20 | 4.1k | APNIC | CN | 16th Sept 2009 |
| 180.188.64.0/18 | 16.4k | APNIC | CN | 16th Sept 2009 |
| 180.189.148.0/22 | 1k | APNIC | CN | 22nd Sept 2009 |
| 180.222.224.0/19 | 8.2k | APNIC | CN | 15th Oct 2009 |
| 180.233.144.0/22 | 1k | APNIC | CN | 19th Nov 2015 |
| 180.233.64.0/19 | 8.2k | APNIC | CN | 16th Oct 2009 |
| 180.235.112.0/22 | 1k | APNIC | CN | 30th Nov 2015 |
| 180.86.0.0/16 | 65.5k | APNIC | CN | 17th Jul 2009 |
| 180.94.120.0/22 | 1k | APNIC | CN | 19th Nov 2015 |
| 180.94.124.0/22 | 1k | APNIC | CN | 19th Nov 2015 |
| 180.94.56.0/21 | 2k | APNIC | CN | 4th Aug 2009 |
| 180.94.96.0/20 | 4.1k | APNIC | CN | 4th Aug 2009 |
| 182.16.144.0/22 | 1k | APNIC | CN | 19th Nov 2015 |
| 182.16.148.0/22 | 1k | APNIC | CN | 19th Nov 2015 |
| 182.16.192.0/19 | 8.2k | APNIC | CN | 4th Feb 2010 |
| 182.160.64.0/19 | 8.2k | APNIC | CN | 31st Mar 2010 |
| 182.23.184.0/21 | 2k | APNIC | CN | 12th Apr 2011 |
| 182.23.200.0/21 | 2k | APNIC | CN | 12th Apr 2011 |
| 182.236.128.0/17 | 32.8k | APNIC | CN | 27th Apr 2010 |
| 182.237.24.0/22 | 1k | APNIC | CN | 19th Nov 2015 |
| 182.237.28.0/22 | 1k | APNIC | CN | 19th Nov 2015 |
| 182.238.0.0/16 | 65.5k | APNIC | CN | 4th May 2010 |
| 182.239.0.0/19 | 8.2k | APNIC | CN | 5th May 2010 |
| 182.255.60.0/22 | 1k | APNIC | CN | 3rd Aug 2016 |
| 182.49.0.0/16 | 65.5k | APNIC | CN | 22nd Feb 2010 |
| 182.54.244.0/22 | 1k | APNIC | CN | 3rd Nov 2015 |
| 183.78.160.0/22 | 1k | APNIC | CN | 19th Nov 2015 |