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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 |
|---|---|---|---|---|
| 195.216.242.0/24 | 256 | RIPE NCC |  FR | 16th May 2008 |
| 195.22.150.0/23 | 512 | RIPE NCC |  GB | 9th Jan 2003 |
| 195.222.100.0/22 | 1k | RIPE NCC |  PL | 10th Jan 2007 |
| 195.222.104.0/24 | 256 | RIPE NCC | FR | 11th Jan 2007 |
| 195.225.104.0/22 | 1k | RIPE NCC |  DE | 19th Jan 2005 |
| 195.225.112.0/22 | 1k | RIPE NCC |  CY | 28th Jan 2005 |
| 195.225.135.0/24 | 256 | RIPE NCC | DE | 25th Feb 2004 |
| 195.225.192.0/22 | 1k | RIPE NCC |  NL | 12th Mar 2004 |
| 195.225.248.0/22 | 1k | RIPE NCC | PL | 31st Mar 2004 |
| 195.225.42.0/23 | 512 | RIPE NCC |  RO | 18th May 2005 |
| 195.225.72.0/22 | 1k | RIPE NCC |  CZ | 10th Jan 2005 |
| 195.225.80.0/24 | 256 | RIPE NCC | FR | 23rd Jul 2021 |
| 195.225.82.0/24 | 256 | RIPE NCC |  NO | 23rd Jul 2021 |
| 195.226.193.0/24 | 256 | RIPE NCC |  IT | 3rd Feb 2010 |
| 195.226.206.0/24 | 256 | RIPE NCC | RO | 22nd Jul 2010 |
| 195.226.208.0/24 | 256 | RIPE NCC |  KZ | 23rd Jul 2010 |
| 195.226.211.0/24 | 256 | RIPE NCC |  VG | 27th Sept 2022 |
| 195.230.100.0/24 | 256 | RIPE NCC |  CH | 28th Mar 2008 |
| 195.230.104.0/24 | 256 | RIPE NCC |  BE | 31st Mar 2008 |
| 195.230.118.0/24 | 256 | RIPE NCC |  US | 3rd Apr 2008 |
| 195.230.122.0/24 | 256 | RIPE NCC | GB | 8th Apr 2008 |
| 195.230.98.0/24 | 256 | RIPE NCC |  TR | 7th Jul 2025 |
| 195.232.0.0/17 | 32.8k | RIPE NCC | NL | 10th May 1996 |
| 195.234.10.0/23 | 512 | RIPE NCC | DE | 29th Oct 2009 |
| 195.234.129.0/24 | 256 | RIPE NCC | DE | 22nd Aug 2002 |
| 195.234.131.0/24 | 256 | RIPE NCC |  LV | 26th Aug 2002 |
| 195.234.136.0/24 | 256 | RIPE NCC | CH | 29th Aug 2002 |
| 195.234.137.0/24 | 256 | RIPE NCC |  SI | 2nd Sept 2002 |
| 195.234.146.0/24 | 256 | RIPE NCC |  SE | 5th Sept 2002 |
| 195.234.147.0/24 | 256 | RIPE NCC | NL | 25th Nov 2019 |
| 195.234.154.0/24 | 256 | RIPE NCC |  RU | 27th Mar 2023 |
| 195.234.157.0/24 | 256 | RIPE NCC |  AT | 13th Sept 2002 |
| 195.234.158.0/24 | 256 | RIPE NCC |  IL | 13th Sept 2002 |
| 195.234.160.0/24 | 256 | RIPE NCC | SE | 17th Sept 2002 |
| 195.234.162.0/24 | 256 | RIPE NCC | US | 19th Sept 2002 |
| 195.234.166.0/24 | 256 | RIPE NCC |  ES | 20th Sept 2002 |
| 195.234.167.0/24 | 256 | RIPE NCC | ES | 20th Sept 2002 |
| 195.234.168.0/24 | 256 | AFRINIC |  EG | 20th Sept 2007 |
| 195.234.173.0/24 | 256 | RIPE NCC | NL | 26th Sept 2002 |
| 195.234.18.0/23 | 512 | RIPE NCC | AT | 2nd Nov 2009 |
| 195.234.185.0/24 | 256 | AFRINIC | EG | 20th Sept 2007 |
| 195.234.192.0/22 | 1k | RIPE NCC | DE | 4th Sept 2002 |
| 195.234.224.0/22 | 1k | RIPE NCC | CH | 12th Sept 2002 |
| 195.234.244.0/22 | 1k | RIPE NCC | GB | 25th Sept 2002 |
| 195.234.252.0/22 | 1k | AFRINIC | EG | 21st Sept 2007 |
| 195.234.36.0/24 | 256 | RIPE NCC | FR | 3rd Oct 2005 |
| 195.234.37.0/24 | 256 | RIPE NCC | CH | 3rd Oct 2005 |
| 195.234.51.0/24 | 256 | RIPE NCC |  MT | 11th Oct 2005 |
| 195.234.53.0/24 | 256 | RIPE NCC | BE | 12th Oct 2005 |
| 195.234.88.0/23 | 512 | RIPE NCC | NL | 10th Sept 2019 |