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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 |
|---|---|---|---|---|
| 203.91.96.0/20 | 4.1k | APNIC |  CN | 9th Jun 2004 |
| 203.92.0.0/22 | 1k | APNIC | CN | 14th Apr 2011 |
| 203.92.160.0/19 | 8.2k | APNIC | CN | 17th May 2004 |
| 203.92.6.0/24 | 256 | APNIC | CN | 9th Jun 2016 |
| 203.95.112.0/20 | 4.1k | APNIC | CN | 16th Jun 2006 |
| 203.95.200.0/22 | 1k | APNIC | CN | 25th Dec 2015 |
| 203.95.204.0/22 | 1k | APNIC | CN | 25th Dec 2015 |
| 203.95.208.0/22 | 1k | APNIC | CN | 28th Dec 2015 |
| 203.95.224.0/19 | 8.2k | APNIC | CN | 12th Apr 2011 |
| 203.95.96.0/20 | 4.1k | APNIC | CN | 5th Jan 2005 |
| 203.99.80.0/20 | 4.1k | APNIC | CN | 8th Mar 2006 |
| 210.14.160.0/19 | 8.2k | APNIC | CN | 21st Jun 2001 |
| 210.15.128.0/18 | 16.4k | APNIC | CN | 3rd Aug 2001 |
| 210.185.192.0/18 | 16.4k | APNIC | CN | 10th Dec 2004 |
| 210.2.16.0/20 | 4.1k | APNIC | CN | 20th Apr 2007 |
| 210.23.32.0/19 | 8.2k | APNIC | CN | 25th May 2006 |
| 210.56.192.0/19 | 8.2k | APNIC | CN | 9th Nov 2004 |
| 210.7.56.0/22 | 1k | APNIC | CN | 13th Nov 2015 |
| 210.7.60.0/22 | 1k | APNIC | CN | 13th Nov 2015 |
| 210.75.128.0/19 | 8.2k | APNIC | CN | 6th Apr 1998 |
| 210.75.160.0/19 | 8.2k | APNIC | CN | 6th Apr 1998 |
| 210.76.224.0/19 | 8.2k | APNIC | CN | 11th Aug 1998 |
| 210.77.96.0/19 | 8.2k | APNIC | CN | 11th Aug 1998 |
| 210.78.0.0/19 | 8.2k | APNIC | CN | 11th Aug 1998 |
| 210.78.160.0/19 | 8.2k | APNIC | CN | 11th Aug 1998 |
| 210.78.192.0/18 | 16.4k | APNIC | CN | 11th Aug 1998 |
| 210.78.32.0/19 | 8.2k | APNIC | CN | 11th Aug 1998 |
| 210.78.64.0/18 | 16.4k | APNIC | CN | 11th Aug 1998 |
| 210.79.64.0/18 | 16.4k | APNIC | CN | 10th Nov 2004 |
| 210.87.114.0/23 | 512 | APNIC | CN | 6th Dec 2023 |
| 210.87.72.0/23 | 512 | APNIC | CN | 4th Dec 2023 |
| 211.101.64.0/18 | 16.4k | APNIC | CN | 14th Dec 1999 |
| 211.147.192.0/20 | 4.1k | APNIC | CN | 22nd Jun 2001 |
| 211.156.160.0/20 | 4.1k | APNIC | CN | 27th Jun 2000 |
| 211.156.176.0/20 | 4.1k | APNIC | CN | 27th Jun 2000 |
| 211.156.64.0/20 | 4.1k | APNIC | CN | 27th Jun 2000 |
| 211.156.80.0/20 | 4.1k | APNIC | CN | 27th Jun 2000 |
| 211.156.96.0/19 | 8.2k | APNIC | CN | 27th Jun 2000 |
| 211.167.160.0/20 | 4.1k | APNIC | CN | 9th Jun 2000 |
| 218.100.128.0/17 | 32.8k | APNIC | CN | 12th Apr 2011 |
| 218.100.96.0/19 | 8.2k | APNIC | CN | 12th Apr 2011 |
| 218.185.192.0/19 | 8.2k | APNIC | CN | 19th Oct 2004 |
| 218.244.64.0/19 | 8.2k | APNIC | CN | 30th Nov 2001 |
| 218.244.96.0/19 | 8.2k | APNIC | CN | 30th Nov 2001 |
| 218.98.224.0/19 | 8.2k | APNIC | CN | 22nd Jun 2001 |
| 218.99.0.0/16 | 65.5k | APNIC | CN | 22nd Jun 2001 |
| 219.151.64.0/18 | 16.4k | APNIC | CN | 21st Mar 2002 |
| 219.90.68.0/22 | 1k | APNIC | CN | 26th Nov 2015 |
| 219.90.72.0/22 | 1k | APNIC | CN | 26th Nov 2015 |
| 219.90.76.0/22 | 1k | APNIC | CN | 26th Nov 2015 |