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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 the most unannounced blocks, largest first.
Unannounced blocks
84,960 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 118.191.88.0/21 | 2k | APNIC |  CN | 19th Oct 2007 |
| 118.191.96.0/19 | 8.2k | APNIC | CN | 19th Oct 2007 |
| 118.193.0.0/21 | 2k | APNIC | CN | 19th Oct 2007 |
| 118.193.128.0/17 | 32.8k | APNIC | CN | 19th Oct 2007 |
| 118.193.48.0/21 | 2k | APNIC | CN | 19th Oct 2007 |
| 118.193.8.0/21 | 2k | APNIC | CN | 19th Oct 2007 |
| 118.194.192.0/19 | 8.2k | APNIC | CN | 19th Oct 2007 |
| 118.195.0.0/17 | 32.8k | APNIC | CN | 19th Oct 2007 |
| 118.224.0.0/14 | 262k | APNIC | CN | 30th Oct 2007 |
| 118.26.0.0/19 | 8.2k | APNIC | CN | 3rd Aug 2007 |
| 118.26.133.0/24 | 256 | APNIC | CN | 3rd Aug 2007 |
| 118.26.134.0/23 | 512 | APNIC | CN | 3rd Aug 2007 |
| 118.26.176.0/22 | 1k | APNIC |  HK | 3rd Aug 2007 |
| 118.26.188.0/22 | 1k | APNIC | CN | 3rd Aug 2007 |
| 118.26.40.0/21 | 2k | APNIC | CN | 3rd Aug 2007 |
| 118.28.0.0/15 | 131k | APNIC | CN | 3rd Aug 2007 |
| 118.30.0.0/16 | 65.5k | APNIC | CN | 3rd Aug 2007 |
| 118.67.112.0/20 | 4.1k | APNIC | CN | 16th Aug 2007 |
| 118.91.224.0/21 | 2k | APNIC |  ID | 28th Aug 2007 |
| 118.91.240.0/20 | 4.1k | APNIC | CN | 29th Aug 2007 |
| 119.10.0.0/17 | 32.8k | APNIC | CN | 26th Nov 2007 |
| 119.12.152.0/21 | 2k | APNIC |  MY | 26th Nov 2007 |
| 119.13.248.0/21 | 2k | APNIC |  SG | 18th May 2009 |
| 119.148.176.0/20 | 4.1k | APNIC | CN | 12th Apr 2011 |
| 119.15.128.0/21 | 2k | APNIC | ID | 3rd Dec 2007 |
| 119.150.107.0/24 | 256 | APNIC |  JP | 18th Feb 2008 |
| 119.150.108.0/22 | 1k | APNIC | JP | 18th Feb 2008 |
| 119.150.206.0/24 | 256 | APNIC | JP | 18th Feb 2008 |
| 119.150.207.0/24 | 256 | APNIC | JP | 18th Feb 2008 |
| 119.150.208.0/22 | 1k | APNIC | JP | 18th Feb 2008 |
| 119.150.212.0/24 | 256 | APNIC | JP | 18th Feb 2008 |
| 119.150.213.0/24 | 256 | APNIC | JP | 18th Feb 2008 |
| 119.150.214.0/24 | 256 | APNIC | JP | 18th Feb 2008 |
| 119.150.228.0/22 | 1k | APNIC | JP | 18th Feb 2008 |
| 119.150.232.0/22 | 1k | APNIC | JP | 18th Feb 2008 |
| 119.150.236.0/24 | 256 | APNIC | JP | 18th Feb 2008 |
| 119.150.237.0/24 | 256 | APNIC | JP | 18th Feb 2008 |
| 119.150.238.0/24 | 256 | APNIC | JP | 18th Feb 2008 |
| 119.151.192.0/18 | 16.4k | APNIC | CN | 12th Apr 2011 |
| 119.160.200.0/21 | 2k | APNIC | CN | 12th Apr 2011 |
| 119.160.213.0/24 | 256 | APNIC |  TH | 22nd Feb 2008 |
| 119.160.216.0/22 | 1k | APNIC | TH | 22nd Feb 2008 |
| 119.160.222.0/24 | 256 | APNIC | TH | 22nd Feb 2008 |
| 119.160.240.0/20 | 4.1k | APNIC |  TW | 27th Feb 2008 |
| 119.161.0.0/19 | 8.2k | APNIC |  KR | 22nd Feb 2008 |
| 119.161.48.0/20 | 4.1k | APNIC |  AU | 25th Feb 2011 |
| 119.18.192.0/20 | 4.1k | APNIC | CN | 11th Dec 2007 |
| 119.18.225.0/24 | 256 | APNIC | CN | 14th Dec 2007 |
| 119.18.227.0/24 | 256 | APNIC | CN | 14th Dec 2007 |
| 119.18.228.0/22 | 1k | APNIC | CN | 14th Dec 2007 |