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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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.
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Countries with unannounced space registered through ARIN, largest first.
Unannounced blocks in United States
26,273 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 69.42.192.0/20 | 4.1k | ARIN |  US | 5th May 2003 |
| 69.46.35.0/24 | 256 | ARIN | US | 4th Mar 2026 |
| 69.46.42.0/24 | 256 | ARIN | US | 18th Dec 2025 |
| 69.46.44.0/24 | 256 | ARIN | US | 30th Dec 2025 |
| 69.48.128.0/21 | 2k | ARIN | US | 29th Oct 2021 |
| 69.48.144.0/24 | 256 | ARIN | US | 22nd May 2003 |
| 69.48.147.0/24 | 256 | ARIN | US | 22nd May 2003 |
| 69.48.158.0/24 | 256 | ARIN | US | 29th Oct 2021 |
| 69.48.160.0/23 | 512 | ARIN | US | 29th Oct 2021 |
| 69.48.209.0/24 | 256 | ARIN | US | 20th Jun 2024 |
| 69.49.176.0/20 | 4.1k | ARIN | US | 2nd May 2007 |
| 69.5.48.0/22 | 1k | ARIN | US | 1st Apr 2024 |
| 69.50.0.0/20 | 4.1k | ARIN | US | 28th May 2003 |
| 69.50.112.0/20 | 4.1k | ARIN | US | 7th May 2007 |
| 69.50.16.0/20 | 4.1k | ARIN | US | 7th May 2007 |
| 69.50.160.0/19 | 8.2k | ARIN | US | 20th May 2026 |
| 69.50.92.0/22 | 1k | ARIN | US | 1st Jul 2022 |
| 69.51.128.0/19 | 8.2k | ARIN | US | 9th Jun 2003 |
| 69.54.192.0/19 | 8.2k | ARIN | US | 9th Jun 2003 |
| 69.56.128.0/17 | 32.8k | ARIN | US | 10th Jun 2003 |
| 69.57.64.0/20 | 4.1k | ARIN | US | 18th Jun 2003 |
| 69.58.160.0/20 | 4.1k | ARIN | US | 13th Jun 2005 |
| 69.58.95.0/24 | 256 | ARIN | US | 21st Sept 2020 |
| 69.59.25.0/24 | 256 | ARIN | US | 9th Oct 2020 |
| 69.59.65.0/24 | 256 | ARIN | US | 12th Jan 2015 |
| 69.59.95.0/24 | 256 | ARIN | US | 4th Sept 2014 |
| 69.6.80.0/20 | 4.1k | ARIN | US | 27th Jun 2012 |
| 69.60.144.0/20 | 4.1k | ARIN | US | 18th Jul 2007 |
| 69.64.120.0/22 | 1k | ARIN | US | 28th Sept 2020 |
| 69.65.96.0/19 | 8.2k | ARIN | US | 6th Feb 2006 |
| 69.67.168.0/23 | 512 | ARIN | US | 29th Jan 2025 |
| 69.7.79.0/24 | 256 | ARIN | US | 18th Aug 2020 |
| 69.71.208.0/23 | 512 | ARIN | US | 29th Sept 2006 |
| 69.71.210.0/24 | 256 | ARIN | US | 18th Feb 2026 |
| 69.71.212.0/22 | 1k | ARIN | US | 29th Sept 2006 |
| 69.71.216.0/22 | 1k | ARIN | US | 29th Sept 2006 |
| 69.71.222.0/23 | 512 | ARIN | US | 29th Sept 2006 |
| 69.71.224.0/19 | 8.2k | ARIN | US | 29th Sept 2005 |
| 69.8.176.0/20 | 4.1k | ARIN | US | 5th Mar 2004 |
| 69.85.136.0/24 | 256 | ARIN | US | 13th Feb 2012 |
| 69.85.143.0/24 | 256 | ARIN | US | 13th Feb 2012 |
| 69.85.144.0/21 | 2k | ARIN | US | 13th Feb 2012 |
| 69.85.154.0/23 | 512 | ARIN | US | 13th Feb 2012 |
| 69.85.156.0/23 | 512 | ARIN | US | 13th Feb 2012 |
| 69.85.160.0/19 | 8.2k | ARIN | US | 13th Feb 2012 |
| 69.87.120.0/22 | 1k | ARIN | US | 11th Aug 2023 |
| 69.87.176.0/22 | 1k | ARIN | US | 3rd Oct 2025 |
| 69.87.208.0/24 | 256 | ARIN | US | 25th Jan 2017 |
| 69.87.215.0/24 | 256 | ARIN | US | 8th Apr 2016 |
| 69.87.64.0/19 | 8.2k | ARIN | US | 11th Aug 2023 |