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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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
84,619 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 68.65.176.0/20 | 4.1k | ARIN |  US | 5th Sept 2008 |
| 68.65.228.0/22 | 1k | APNIC |  AU | 17th Sept 2008 |
| 68.65.232.0/21 | 2k | APNIC | AU | 17th Sept 2008 |
| 68.67.115.0/24 | 256 | ARIN | US | 4th Mar 2026 |
| 68.67.120.0/24 | 256 | RIPE NCC |  NL | 22nd Jun 2009 |
| 68.68.121.0/24 | 256 | ARIN | US | 24th Feb 2014 |
| 68.68.125.0/24 | 256 | ARIN | US | 24th Feb 2014 |
| 68.68.48.0/20 | 4.1k | ARIN | US | 8th Sept 2008 |
| 68.69.56.0/21 | 2k | ARIN | US | 24th Jun 2009 |
| 69.0.160.0/23 | 512 | ARIN |  CA | 23rd Sept 2002 |
| 69.0.162.0/24 | 256 | ARIN | CA | 23rd Sept 2002 |
| 69.0.197.0/24 | 256 | ARIN | CA | 23rd Sept 2002 |
| 69.0.203.0/24 | 256 | ARIN | CA | 23rd Sept 2002 |
| 69.0.209.0/24 | 256 | ARIN | CA | 23rd Sept 2002 |
| 69.0.210.0/24 | 256 | ARIN | CA | 23rd Sept 2002 |
| 69.0.215.0/24 | 256 | ARIN | CA | 23rd Sept 2002 |
| 69.10.248.0/21 | 2k | ARIN | US | 27th Mar 2007 |
| 69.12.106.0/23 | 512 | ARIN | CA | 22nd Feb 2019 |
| 69.12.24.0/24 | 256 | ARIN | US | 8th Oct 2013 |
| 69.12.41.0/24 | 256 | ARIN | US | 17th Sept 2015 |
| 69.12.67.0/24 | 256 | ARIN | US | 30th Jan 2025 |
| 69.160.161.0/24 | 256 | ARIN | CA | 3rd Aug 2020 |
| 69.164.0.0/18 | 16.4k | ARIN | US | 13th Feb 2009 |
| 69.165.0.0/20 | 4.1k | ARIN | US | 28th Sept 2009 |
| 69.168.16.0/20 | 4.1k | ARIN | US | 3rd Sept 2010 |
| 69.169.112.0/20 | 4.1k | ARIN | US | 10th Feb 2009 |
| 69.171.112.0/22 | 1k | ARIN | US | 23rd Jun 2008 |
| 69.171.116.0/24 | 256 | ARIN | US | 23rd Jun 2008 |
| 69.171.118.0/23 | 512 | ARIN | US | 23rd Jun 2008 |
| 69.173.0.0/19 | 8.2k | ARIN | US | 22nd Jul 2020 |
| 69.19.134.0/24 | 256 | ARIN | US | 23rd Jan 2003 |
| 69.19.135.0/24 | 256 | ARIN | US | 13th Feb 2012 |
| 69.19.161.0/24 | 256 | ARIN | US | 13th Feb 2012 |
| 69.19.162.0/23 | 512 | ARIN | US | 13th Feb 2012 |
| 69.19.164.0/22 | 1k | ARIN | US | 13th Feb 2012 |
| 69.19.176.0/21 | 2k | ARIN | US | 13th Feb 2012 |
| 69.19.184.0/23 | 512 | ARIN | US | 13th Feb 2012 |
| 69.19.190.0/24 | 256 | ARIN | US | 13th Feb 2012 |
| 69.19.191.0/24 | 256 | ARIN | US | 13th Feb 2012 |
| 69.19.217.0/24 | 256 | ARIN | US | 13th Feb 2012 |
| 69.19.218.0/23 | 512 | ARIN | US | 13th Feb 2012 |
| 69.19.220.0/22 | 1k | ARIN | US | 13th Feb 2012 |
| 69.19.229.0/24 | 256 | ARIN | US | 13th Feb 2012 |
| 69.19.235.0/24 | 256 | ARIN | US | 13th Feb 2012 |
| 69.19.238.0/23 | 512 | ARIN | US | 13th Feb 2012 |
| 69.19.240.0/24 | 256 | ARIN | US | 13th Feb 2012 |
| 69.19.246.0/23 | 512 | ARIN | US | 13th Feb 2012 |
| 69.19.248.0/24 | 256 | ARIN | US | 13th Feb 2012 |
| 69.19.252.0/24 | 256 | ARIN | US | 13th Feb 2012 |
| 69.19.254.0/23 | 512 | ARIN | US | 13th Feb 2012 |