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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 |
|---|---|---|---|---|
| 195.28.18.0/23 | 512 | RIPE NCC |  RO | 5th Mar 2008 |
| 195.3.208.0/22 | 1k | RIPE NCC |  GB | 30th Aug 2006 |
| 195.34.131.0/24 | 256 | RIPE NCC |  AT | 28th Oct 1996 |
| 195.34.212.0/22 | 1k | RIPE NCC |  EE | 12th Jan 2006 |
| 195.34.216.0/22 | 1k | RIPE NCC |  PL | 13th Jan 2006 |
| 195.35.103.0/24 | 256 | RIPE NCC |  DE | 24th Aug 2004 |
| 195.35.104.128/25 | 128 | RIPE NCC |  IT | 11th Apr 2001 |
| 195.35.104.32/27 | 32 | RIPE NCC | AT | 24th Sept 2001 |
| 195.35.104.64/26 | 64 | RIPE NCC | IT | 11th Apr 2001 |
| 195.35.106.0/24 | 256 | RIPE NCC |  FR | 8th Sept 2000 |
| 195.35.121.0/24 | 256 | RIPE NCC |  CH | 14th Sept 2000 |
| 195.35.122.0/24 | 256 | RIPE NCC |  SI | 13th Sept 2000 |
| 195.35.124.0/23 | 512 | RIPE NCC | GB | 8th Sept 2000 |
| 195.35.64.0/24 | 256 | RIPE NCC |  BE | 1st Sept 2000 |
| 195.35.65.0/24 | 256 | RIPE NCC |  UA | 26th Sept 2000 |
| 195.35.67.0/24 | 256 | RIPE NCC |  NL | 22nd Nov 2019 |
| 195.35.85.0/24 | 256 | RIPE NCC |  PS | 15th Oct 2009 |
| 195.35.86.0/24 | 256 | RIPE NCC |  IE | 5th Oct 2000 |
| 195.35.97.0/24 | 256 | RIPE NCC | NL | 22nd Nov 2019 |
| 195.38.16.0/23 | 512 | RIPE NCC | UA | 12th Jun 2000 |
| 195.38.18.0/24 | 256 | RIPE NCC | UA | 12th Jun 2000 |
| 195.38.31.0/24 | 256 | RIPE NCC | PL | 25th Jul 2000 |
| 195.39.198.0/23 | 512 | RIPE NCC |  BG | 24th Mar 2003 |
| 195.39.204.0/23 | 512 | RIPE NCC | NL | 4th Nov 2019 |
| 195.39.206.0/24 | 256 | RIPE NCC |  RU | 28th Mar 2003 |
| 195.39.208.0/23 | 512 | RIPE NCC |  CZ | 1st Apr 2003 |
| 195.39.218.0/23 | 512 | AFRINIC |  DZ | 20th Sept 2007 |
| 195.39.222.0/23 | 512 | RIPE NCC | DE | 10th Apr 2003 |
| 195.39.228.0/23 | 512 | RIPE NCC | RU | 15th Apr 2003 |
| 195.39.241.0/24 | 256 | RIPE NCC | UA | 22nd Apr 2003 |
| 195.39.254.0/23 | 512 | RIPE NCC | CH | 8th May 2003 |
| 195.42.110.0/23 | 512 | RIPE NCC |  SE | 27th Feb 2008 |
| 195.42.114.0/24 | 256 | RIPE NCC | DE | 28th Feb 2008 |
| 195.42.126.0/24 | 256 | RIPE NCC | UA | 29th Feb 2008 |
| 195.42.128.0/23 | 512 | RIPE NCC | RO | 12th Feb 2008 |
| 195.42.132.0/23 | 512 | RIPE NCC | BE | 13th Feb 2008 |
| 195.42.134.0/23 | 512 | RIPE NCC | NL | 13th Feb 2008 |
| 195.42.140.0/23 | 512 | RIPE NCC | PL | 19th May 2008 |
| 195.42.144.0/23 | 512 | RIPE NCC | FR | 15th Feb 2008 |
| 195.42.156.0/24 | 256 | RIPE NCC | RU | 20th Feb 2008 |
| 195.42.252.0/22 | 1k | RIPE NCC | DE | 23rd May 2000 |
| 195.43.136.0/24 | 256 | RIPE NCC |  LT | 9th Jun 2008 |
| 195.43.145.0/24 | 256 | RIPE NCC |  NO | 11th Jun 2008 |
| 195.43.151.0/24 | 256 | RIPE NCC | SE | 13th Jun 2008 |
| 195.43.154.0/24 | 256 | RIPE NCC |  AU | 13th Jun 2008 |
| 195.43.158.0/24 | 256 | RIPE NCC | NL | 17th Jun 2008 |
| 195.43.64.0/23 | 512 | RIPE NCC | FR | 26th May 2010 |
| 195.43.88.0/23 | 512 | RIPE NCC | DE | 2nd Jun 2010 |
| 195.46.48.0/22 | 1k | RIPE NCC | GB | 14th Feb 2003 |
| 195.47.192.0/24 | 256 | RIPE NCC | RU | 28th Mar 2003 |