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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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
Browse by country
Countries with the most unannounced blocks, largest first.
Unannounced blocks
85,244 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 195.66.97.0/24 | 256 | RIPE NCC |  CH | 14th Mar 2008 |
| 195.68.206.0/23 | 512 | RIPE NCC |  GB | 26th May 2003 |
| 195.68.220.0/24 | 256 | RIPE NCC |  DE | 10th Jun 2003 |
| 195.68.221.0/24 | 256 | RIPE NCC | DE | 10th Jun 2003 |
| 195.68.230.0/23 | 512 | RIPE NCC |  SK | 18th Jun 2003 |
| 195.68.238.0/23 | 512 | RIPE NCC | GB | 23rd Jun 2003 |
| 195.69.100.0/22 | 1k | RIPE NCC | GB | 4th Jun 2018 |
| 195.69.116.0/22 | 1k | RIPE NCC |  SE | 26th Jun 2003 |
| 195.69.152.0/22 | 1k | RIPE NCC | GB | 17th Mar 2003 |
| 195.69.160.0/24 | 256 | RIPE NCC |  RU | 25th Apr 2022 |
| 195.69.227.0/24 | 256 | RIPE NCC | CH | 1st Mar 2011 |
| 195.69.232.0/22 | 1k | RIPE NCC | CH | 8th May 2003 |
| 195.7.0.0/22 | 1k | RIPE NCC |  AT | 27th Sept 2018 |
| 195.72.116.0/23 | 512 | RIPE NCC | GB | 7th Aug 2000 |
| 195.72.156.0/22 | 1k | RIPE NCC |  UA | 23rd Jan 2006 |
| 195.72.40.0/22 | 1k | RIPE NCC | CH | 9th Jun 1997 |
| 195.74.36.0/22 | 1k | RIPE NCC | SE | 27th Dec 2006 |
| 195.74.56.0/22 | 1k | RIPE NCC |  PL | 8th Jan 2007 |
| 195.74.70.0/24 | 256 | RIPE NCC | DE | 10th Jul 2006 |
| 195.74.77.0/24 | 256 | RIPE NCC |  NO | 9th Aug 2012 |
| 195.74.84.0/24 | 256 | RIPE NCC | RU | 12th Jul 2006 |
| 195.74.86.0/24 | 256 | RIPE NCC |  MD | 19th Oct 2022 |
| 195.78.102.0/23 | 512 | RIPE NCC | AT | 5th Oct 2009 |
| 195.78.110.0/23 | 512 | RIPE NCC | GB | 6th Oct 2009 |
| 195.78.114.0/24 | 256 | RIPE NCC |  ES | 14th Oct 2024 |
| 195.78.116.0/23 | 512 | RIPE NCC | RU | 8th Oct 2009 |
| 195.78.120.0/24 | 256 | RIPE NCC |  HK | 7th Aug 2026 |
| 195.78.121.0/24 | 256 | RIPE NCC |  IT | 19th Aug 2026 |
| 195.78.34.0/23 | 512 | RIPE NCC |  HR | 8th Aug 2007 |
| 195.78.40.0/23 | 512 | RIPE NCC | DE | 19th Feb 2003 |
| 195.78.76.0/23 | 512 | RIPE NCC | DE | 6th Sept 2006 |
| 195.78.84.0/23 | 512 | RIPE NCC |  NL | 8th Sept 2006 |
| 195.8.100.0/24 | 256 | RIPE NCC | GB | 12th Jan 2005 |
| 195.8.118.0/23 | 512 | RIPE NCC | ES | 1st Nov 2019 |
| 195.8.160.0/19 | 8.2k | RIPE NCC | GB | 11th Dec 1997 |
| 195.8.34.0/23 | 512 | RIPE NCC | RU | 18th Dec 2008 |
| 195.8.47.0/24 | 256 | RIPE NCC | NL | 18th May 2020 |
| 195.8.96.0/24 | 256 | RIPE NCC | GB | 12th Jan 2005 |
| 195.80.137.0/24 | 256 | RIPE NCC | SE | 31st Aug 2011 |
| 195.80.232.0/24 | 256 | RIPE NCC | UA | 30th Jun 2005 |
| 195.80.234.0/24 | 256 | RIPE NCC | AT | 28th Jun 2005 |
| 195.80.236.0/24 | 256 | RIPE NCC | PL | 28th Jun 2005 |
| 195.80.240.0/20 | 4.1k | RIPE NCC |  DK | 22nd Oct 2002 |
| 195.80.32.0/22 | 1k | RIPE NCC |  BZ | 25th Mar 2019 |
| 195.80.56.0/22 | 1k | RIPE NCC | RU | 25th Mar 2019 |
| 195.82.152.0/23 | 512 | RIPE NCC | DE | 28th Mar 2008 |
| 195.85.0.0/23 | 512 | RIPE NCC | DK | 6th Feb 1997 |
| 195.85.100.0/23 | 512 | RIPE NCC | DK | 6th Feb 1997 |
| 195.85.104.0/23 | 512 | RIPE NCC | DK | 6th Feb 1997 |
| 195.85.109.0/24 | 256 | RIPE NCC | DK | 6th Feb 1997 |