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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 |
|---|---|---|---|---|
| 195.182.216.0/23 | 512 | RIPE NCC |  DK | 1st Mar 2006 |
| 195.182.218.0/23 | 512 | RIPE NCC |  PL | 2nd Mar 2006 |
| 195.182.30.0/24 | 256 | RIPE NCC |  ES | 2nd Jan 2006 |
| 195.182.42.0/24 | 256 | RIPE NCC |  TR | 26th May 2008 |
| 195.182.43.0/24 | 256 | RIPE NCC |  NL | 26th May 2008 |
| 195.182.49.0/24 | 256 | RIPE NCC | PL | 24th May 2012 |
| 195.182.50.0/24 | 256 | RIPE NCC |  DE | 27th May 2008 |
| 195.182.54.0/24 | 256 | RIPE NCC |  IT | 28th May 2008 |
| 195.182.56.0/24 | 256 | RIPE NCC | DE | 29th May 2008 |
| 195.184.128.0/19 | 8.2k | RIPE NCC |  GB | 10th Oct 1996 |
| 195.184.236.0/24 | 256 | RIPE NCC | GB | 14th Nov 1997 |
| 195.184.70.0/23 | 512 | RIPE NCC |  UA | 20th Nov 2007 |
| 195.184.92.0/23 | 512 | RIPE NCC | GB | 28th Nov 2007 |
| 195.189.124.0/22 | 1k | RIPE NCC | GB | 16th Jun 2006 |
| 195.189.144.0/24 | 256 | RIPE NCC |  CZ | 27th Apr 2006 |
| 195.189.152.0/23 | 512 | RIPE NCC |  LU | 6th Nov 2019 |
| 195.189.157.0/24 | 256 | RIPE NCC | ES | 18th Jul 2023 |
| 195.189.158.0/23 | 512 | RIPE NCC | GB | 4th May 2006 |
| 195.189.160.0/23 | 512 | RIPE NCC |  SE | 5th May 2006 |
| 195.189.164.0/23 | 512 | RIPE NCC | LU | 6th Nov 2019 |
| 195.189.188.0/23 | 512 | RIPE NCC | SE | 11th May 2006 |
| 195.189.210.0/23 | 512 | RIPE NCC |  PS | 24th May 2006 |
| 195.189.236.0/23 | 512 | RIPE NCC | DE | 31st May 2006 |
| 195.189.242.0/23 | 512 | RIPE NCC |  PA | 30th Mar 2010 |
| 195.189.26.0/23 | 512 | RIPE NCC | SE | 19th May 2006 |
| 195.19.10.0/23 | 512 | RIPE NCC |  RU | 29th Oct 1996 |
| 195.19.14.0/23 | 512 | RIPE NCC | RU | 29th Oct 1996 |
| 195.190.0.0/24 | 256 | RIPE NCC | NL | 23rd Apr 2008 |
| 195.190.134.0/24 | 256 | RIPE NCC | DK | 17th Oct 2002 |
| 195.190.139.0/24 | 256 | RIPE NCC |  IR | 25th Nov 2019 |
| 195.190.144.0/24 | 256 | RIPE NCC | IR | 25th Nov 2019 |
| 195.190.151.0/24 | 256 | RIPE NCC |  BR | 13th Nov 2002 |
| 195.190.17.0/24 | 256 | RIPE NCC | PL | 29th Apr 2008 |
| 195.190.2.0/24 | 256 | RIPE NCC | DE | 24th Apr 2008 |
| 195.190.224.0/19 | 8.2k | RIPE NCC | NL | 16th Aug 1999 |
| 195.190.5.0/24 | 256 | RIPE NCC |  FR | 25th Apr 2008 |
| 195.191.0.0/24 | 256 | RIPE NCC | NL | 7th Dec 2009 |
| 195.191.116.0/23 | 512 | RIPE NCC |  NO | 1st Feb 2010 |
| 195.191.124.0/23 | 512 | RIPE NCC |  RO | 2nd Feb 2010 |
| 195.191.142.0/23 | 512 | RIPE NCC | DK | 8th Feb 2010 |
| 195.191.170.0/23 | 512 | RIPE NCC | PL | 15th Feb 2010 |
| 195.191.188.0/23 | 512 | RIPE NCC |  CH | 23rd Feb 2010 |
| 195.191.194.0/23 | 512 | RIPE NCC | RU | 2nd Mar 2010 |
| 195.191.250.0/24 | 256 | RIPE NCC | GB | 20th Jan 2025 |
| 195.191.49.0/24 | 256 | RIPE NCC | GB | 15th Dec 2021 |
| 195.191.50.0/23 | 512 | RIPE NCC | RU | 23rd Dec 2009 |
| 195.191.54.0/23 | 512 | RIPE NCC | GB | 6th Nov 2019 |
| 195.191.56.0/23 | 512 | RIPE NCC | GB | 6th Nov 2019 |
| 195.191.6.0/24 | 256 | RIPE NCC | UA | 3rd Aug 2026 |
| 195.191.62.0/24 | 256 | RIPE NCC | PL | 31st Dec 2009 |