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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 in Switzerland
950 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 194.56.244.0/24 | 256 | RIPE NCC | 1st Sept 1993 | |
| 194.56.254.0/24 | 256 | RIPE NCC | 1st Sept 1993 | |
| 194.60.217.0/24 | 256 | RIPE NCC | 23rd Nov 2006 | |
| 194.60.70.0/24 | 256 | RIPE NCC | 1st Nov 2006 | |
| 194.62.48.0/23 | 512 | RIPE NCC | 7th Oct 1994 | |
| 194.62.50.0/24 | 256 | RIPE NCC | 7th Oct 1994 | |
| 194.62.51.0/24 | 256 | RIPE NCC | 7th Oct 1994 | |
| 194.69.181.0/24 | 256 | RIPE NCC | 10th Mar 1997 | |
| 194.69.183.0/24 | 256 | RIPE NCC | 10th Mar 1997 | |
| 194.69.2.0/23 | 512 | RIPE NCC | 10th Mar 1998 | |
| 194.69.4.0/23 | 512 | RIPE NCC | 10th Mar 1998 | |
| 194.8.78.0/23 | 512 | RIPE NCC | 5th Feb 2008 | |
| 194.88.192.0/23 | 512 | RIPE NCC | 23rd Aug 2005 | |
| 194.9.12.0/23 | 512 | RIPE NCC | 28th Jul 2006 | |
| 194.9.34.0/23 | 512 | RIPE NCC | 17th Aug 2006 | |
| 195.128.164.0/23 | 512 | RIPE NCC | 22nd Sept 2006 | |
| 195.177.234.0/23 | 512 | RIPE NCC | 5th Nov 2003 | |
| 195.191.188.0/23 | 512 | RIPE NCC | 23rd Feb 2010 | |
| 195.200.218.0/24 | 256 | RIPE NCC | 14th Aug 2006 | |
| 195.214.232.0/24 | 256 | RIPE NCC | 3rd Feb 2005 | |
| 195.230.100.0/24 | 256 | RIPE NCC | 28th Mar 2008 | |
| 195.234.136.0/24 | 256 | RIPE NCC | 29th Aug 2002 | |
| 195.234.224.0/22 | 1k | RIPE NCC | 12th Sept 2002 | |
| 195.234.37.0/24 | 256 | RIPE NCC | 3rd Oct 2005 | |
| 195.245.228.0/24 | 256 | RIPE NCC | 13th Jan 2003 | |
| 195.248.92.0/24 | 256 | RIPE NCC | 5th Jul 2006 | |
| 195.250.41.0/24 | 256 | RIPE NCC | 20th Jan 2006 | |
| 195.253.224.0/22 | 1k | RIPE NCC | 9th Jan 1998 | |
| 195.254.186.0/23 | 512 | RIPE NCC | 7th Nov 2019 | |
| 195.35.121.0/24 | 256 | RIPE NCC | 14th Sept 2000 | |
| 195.39.254.0/23 | 512 | RIPE NCC | 8th May 2003 | |
| 195.47.231.0/24 | 256 | RIPE NCC | 7th May 2003 | |
| 195.47.245.0/24 | 256 | RIPE NCC | 19th May 2003 | |
| 195.60.80.192/27 | 32 | RIPE NCC | 19th Nov 2007 | |
| 195.60.91.128/26 | 64 | RIPE NCC | 30th Mar 2026 | |
| 195.60.93.128/26 | 64 | RIPE NCC | 17th Apr 2007 | |
| 195.64.114.0/24 | 256 | RIPE NCC | 25th Jan 2022 | |
| 195.64.128.0/23 | 512 | RIPE NCC | 4th Nov 2019 | |
| 195.66.123.0/24 | 256 | RIPE NCC | 27th Mar 2008 | |
| 195.66.97.0/24 | 256 | RIPE NCC | 14th Mar 2008 | |
| 195.69.227.0/24 | 256 | RIPE NCC | 1st Mar 2011 | |
| 195.69.232.0/22 | 1k | RIPE NCC | 8th May 2003 | |
| 195.72.40.0/22 | 1k | RIPE NCC | 9th Jun 1997 | |
| 195.88.158.0/23 | 512 | RIPE NCC | 25th Mar 2009 | |
| 195.95.141.0/24 | 256 | RIPE NCC | 18th May 2006 | |
| 198.133.140.0/24 | 256 | RIPE NCC | 1st Sept 1993 | |
| 198.135.137.0/24 | 256 | RIPE NCC | 1st Sept 1993 | |
| 198.135.138.0/24 | 256 | RIPE NCC | 1st Sept 1993 | |
| 198.148.177.0/24 | 256 | RIPE NCC | 1st Sept 1993 | |
| 198.148.178.0/24 | 256 | RIPE NCC | 1st Sept 1993 |