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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 |
|---|---|---|---|---|
| 195.47.204.0/24 | 256 | RIPE NCC |  RU | 29th Mar 2010 |
| 195.47.209.0/24 | 256 | RIPE NCC |  ES | 11th Apr 2003 |
| 195.47.217.0/24 | 256 | RIPE NCC |  AT | 24th Apr 2003 |
| 195.47.222.0/24 | 256 | RIPE NCC |  DK | 25th Apr 2003 |
| 195.47.223.0/24 | 256 | RIPE NCC |  GB | 25th Apr 2003 |
| 195.47.227.0/24 | 256 | RIPE NCC |  PL | 29th Apr 2003 |
| 195.47.231.0/24 | 256 | RIPE NCC |  CH | 7th May 2003 |
| 195.47.236.0/24 | 256 | RIPE NCC | ES | 8th May 2003 |
| 195.47.240.0/24 | 256 | RIPE NCC | GB | 14th May 2003 |
| 195.47.245.0/24 | 256 | RIPE NCC | CH | 19th May 2003 |
| 195.49.192.0/21 | 2k | RIPE NCC | RU | 12th Dec 2002 |
| 195.5.105.0/24 | 256 | RIPE NCC | RU | 17th Oct 2023 |
| 195.5.162.0/24 | 256 | RIPE NCC |  KZ | 9th Apr 2008 |
| 195.5.169.0/24 | 256 | RIPE NCC | GB | 11th Apr 2008 |
| 195.5.175.0/24 | 256 | RIPE NCC | GB | 16th Apr 2008 |
| 195.5.178.0/24 | 256 | RIPE NCC | RU | 16th Apr 2008 |
| 195.5.183.0/24 | 256 | RIPE NCC |  NO | 18th Apr 2008 |
| 195.5.185.0/24 | 256 | RIPE NCC |  SE | 21st Apr 2008 |
| 195.5.188.0/24 | 256 | RIPE NCC | AT | 21st Apr 2008 |
| 195.51.0.0/16 | 65.5k | RIPE NCC |  NL | 10th Dec 1996 |
| 195.54.180.0/23 | 512 | RIPE NCC |  KG | 10th Jun 2010 |
| 195.54.58.0/24 | 256 | RIPE NCC | AT | 20th Jul 2022 |
| 195.58.154.0/23 | 512 | RIPE NCC |  DE | 6th Nov 1996 |
| 195.58.224.0/19 | 8.2k | RIPE NCC |  UA | 27th Nov 1997 |
| 195.58.64.0/19 | 8.2k | RIPE NCC | GB | 13th Feb 1997 |
| 195.60.184.0/23 | 512 | RIPE NCC | UA | 13th Dec 2005 |
| 195.60.237.0/24 | 256 | RIPE NCC |  AE | 22nd Jul 2021 |
| 195.60.32.0/19 | 8.2k | RIPE NCC | DE | 17th Jun 1997 |
| 195.60.67.0/24 | 256 | RIPE NCC | AT | 18th Apr 2006 |
| 195.60.80.0/26 | 64 | RIPE NCC |  GR | 29th Feb 2024 |
| 195.60.80.128/27 | 32 | RIPE NCC |  AM | 14th Mar 2007 |
| 195.60.80.160/27 | 32 | RIPE NCC | PL | 11th Apr 2007 |
| 195.60.80.192/27 | 32 | RIPE NCC | CH | 19th Nov 2007 |
| 195.60.80.224/27 | 32 | RIPE NCC |  PT | 11th Feb 2008 |
| 195.60.80.96/27 | 32 | RIPE NCC | PL | 21st Jun 2006 |
| 195.60.81.0/26 | 64 | RIPE NCC |  IQ | 3rd Sept 2025 |
| 195.60.81.192/26 | 64 | RIPE NCC |  CY | 14th Sept 2012 |
| 195.60.81.64/26 | 64 | RIPE NCC | ES | 19th Jul 2007 |
| 195.60.82.0/26 | 64 | RIPE NCC | CY | 14th Sept 2012 |
| 195.60.82.128/26 | 64 | RIPE NCC | NL | 5th Feb 2010 |
| 195.60.82.192/26 | 64 | RIPE NCC | GB | 2nd Mar 2010 |
| 195.60.82.64/26 | 64 | RIPE NCC |  IE | 10th Jun 2009 |
| 195.60.83.0/26 | 64 | RIPE NCC | DE | 26th Mar 2024 |
| 195.60.83.160/27 | 32 | RIPE NCC | CY | 14th Sept 2012 |
| 195.60.83.192/27 | 32 | RIPE NCC | GB | 18th Jan 2011 |
| 195.60.83.224/27 | 32 | RIPE NCC | NL | 16th Mar 2011 |
| 195.60.83.64/27 | 32 | RIPE NCC | CY | 14th Sept 2012 |
| 195.60.83.96/27 | 32 | RIPE NCC |  EE | 7th May 2010 |
| 195.60.84.0/25 | 128 | RIPE NCC | CY | 14th Sept 2012 |
| 195.60.84.128/26 | 64 | RIPE NCC |  IT | 23rd Feb 2026 |