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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 |
|---|---|---|---|---|
| 122.198.72.0/21 | 2k | APNIC |  CN | 27th Jul 2006 |
| 122.198.80.0/20 | 4.1k | APNIC | CN | 27th Jul 2006 |
| 122.198.96.0/19 | 8.2k | APNIC | CN | 27th Jul 2006 |
| 122.201.48.0/20 | 4.1k | APNIC | CN | 21st Jan 2011 |
| 122.248.24.0/21 | 2k | APNIC | CN | 12th Apr 2011 |
| 122.255.64.0/21 | 2k | APNIC | CN | 12th Apr 2011 |
| 122.8.192.0/18 | 16.4k | APNIC | CN | 14th Aug 2006 |
| 123.0.128.0/18 | 16.4k | APNIC | CN | 3rd Nov 2006 |
| 123.100.0.0/19 | 8.2k | APNIC | CN | 11th Jan 2007 |
| 123.137.0.0/16 | 65.5k | APNIC | CN | 28th Feb 2007 |
| 123.176.60.0/22 | 1k | APNIC | CN | 6th Jan 2011 |
| 123.176.80.0/20 | 4.1k | APNIC | CN | 20th Mar 2007 |
| 123.199.128.0/17 | 32.8k | APNIC | CN | 16th Jun 2006 |
| 123.242.0.0/17 | 32.8k | APNIC | CN | 12th Feb 2007 |
| 123.249.128.0/17 | 32.8k | APNIC | CN | 30th Jan 2007 |
| 123.253.52.0/23 | 512 | APNIC | CN | 29th Sept 2025 |
| 123.50.160.0/19 | 8.2k | APNIC | CN | 12th Apr 2011 |
| 123.61.0.0/16 | 65.5k | APNIC | CN | 16th Jan 2007 |
| 123.62.0.0/16 | 65.5k | APNIC | CN | 16th Jan 2007 |
| 124.108.40.0/21 | 2k | APNIC | CN | 23rd Jun 2006 |
| 124.108.8.0/21 | 2k | APNIC | CN | 6th Mar 2006 |
| 124.109.96.0/21 | 2k | APNIC | CN | 12th Apr 2011 |
| 124.14.24.0/21 | 2k | APNIC | CN | 10th Jan 2007 |
| 124.14.32.0/20 | 4.1k | APNIC | CN | 10th Jan 2007 |
| 124.14.48.0/22 | 1k | APNIC | CN | 10th Jan 2007 |
| 124.14.52.0/22 | 1k | APNIC | CN | 10th Jan 2007 |
| 124.14.56.0/21 | 2k | APNIC | CN | 10th Jan 2007 |
| 124.147.128.0/17 | 32.8k | APNIC | CN | 6th Mar 2006 |
| 124.15.0.0/16 | 65.5k | APNIC | CN | 10th Jan 2007 |
| 124.150.137.0/24 | 256 | APNIC | CN | 9th Jun 2016 |
| 124.197.56.0/21 | 2k | APNIC | CN | 12th Apr 2006 |
| 124.20.0.0/16 | 65.5k | APNIC | CN | 30th Dec 2005 |
| 124.21.128.0/17 | 32.8k | APNIC | CN | 1st Mar 2006 |
| 124.21.32.0/19 | 8.2k | APNIC | CN | 1st Mar 2006 |
| 124.21.64.0/18 | 16.4k | APNIC | CN | 1st Mar 2006 |
| 124.242.0.0/16 | 65.5k | APNIC | CN | 2nd May 2006 |
| 124.249.0.0/16 | 65.5k | APNIC | CN | 23rd May 2006 |
| 124.40.112.0/20 | 4.1k | APNIC | CN | 24th Sept 2007 |
| 124.40.192.0/19 | 8.2k | APNIC | CN | 12th Apr 2011 |
| 124.40.240.0/22 | 1k | APNIC | CN | 29th Oct 2015 |
| 124.42.128.0/17 | 32.8k | APNIC | CN | 18th Oct 2007 |
| 124.6.64.0/18 | 16.4k | APNIC | CN | 12th Dec 2005 |
| 124.68.64.0/18 | 16.4k | APNIC | CN | 16th Aug 2006 |
| 124.69.0.0/16 | 65.5k | APNIC | CN | 16th Aug 2006 |
| 125.169.0.0/16 | 65.5k | APNIC | CN | 20th Mar 2007 |
| 125.171.0.0/16 | 65.5k | APNIC | CN | 26th Sept 2005 |
| 125.254.192.0/18 | 16.4k | APNIC | CN | 10th Jan 2007 |
| 125.31.192.0/18 | 16.4k | APNIC | CN | 27th Aug 2005 |
| 125.61.128.0/17 | 32.8k | APNIC | CN | 12th Nov 2007 |
| 125.96.0.0/15 | 131k | APNIC | CN | 22nd Aug 2005 |