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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 |
|---|---|---|---|---|
| 195.85.96.0/22 | 1k | RIPE NCC |  DK | 6th Feb 1997 |
| 195.88.10.0/23 | 512 | RIPE NCC |  AT | 23rd Jan 2009 |
| 195.88.118.0/24 | 256 | RIPE NCC |  GB | 25th Sept 2025 |
| 195.88.128.0/23 | 512 | RIPE NCC |  PL | 12th Mar 2009 |
| 195.88.132.0/23 | 512 | RIPE NCC |  RU | 13th Mar 2009 |
| 195.88.140.0/24 | 256 | RIPE NCC |  BG | 17th Mar 2009 |
| 195.88.158.0/23 | 512 | RIPE NCC |  CH | 25th Mar 2009 |
| 195.88.162.0/23 | 512 | RIPE NCC |  GR | 27th Mar 2009 |
| 195.88.168.0/23 | 512 | RIPE NCC | PL | 5th Nov 2019 |
| 195.88.178.0/23 | 512 | RIPE NCC | RU | 6th Apr 2009 |
| 195.88.18.0/24 | 256 | RIPE NCC |  TR | 15th May 2025 |
| 195.88.196.0/24 | 256 | RIPE NCC | RU | 14th Apr 2009 |
| 195.88.212.0/24 | 256 | RIPE NCC |  NL | 2nd Sept 2024 |
| 195.88.213.0/24 | 256 | RIPE NCC |  RO | 26th Mar 2020 |
| 195.88.226.0/23 | 512 | RIPE NCC | NL | 5th Nov 2019 |
| 195.88.30.0/23 | 512 | RIPE NCC | PL | 4th Feb 2009 |
| 195.88.34.0/23 | 512 | RIPE NCC | AT | 4th Feb 2009 |
| 195.88.38.0/23 | 512 | RIPE NCC | RO | 5th Feb 2009 |
| 195.88.40.0/23 | 512 | RIPE NCC | RU | 6th Feb 2009 |
| 195.88.54.0/23 | 512 | RIPE NCC |  NO | 13th Feb 2009 |
| 195.88.68.0/24 | 256 | RIPE NCC | RU | 18th Feb 2009 |
| 195.88.92.0/23 | 512 | RIPE NCC | RU | 2nd Mar 2009 |
| 195.88.94.0/23 | 512 | RIPE NCC |  FR | 2nd Mar 2009 |
| 195.90.104.0/23 | 512 | RIPE NCC |  SE | 26th Jan 2006 |
| 195.93.0.0/17 | 32.8k | RIPE NCC |  US | 27th Feb 1997 |
| 195.93.130.0/23 | 512 | RIPE NCC |  DE | 3rd Dec 2007 |
| 195.93.146.0/23 | 512 | RIPE NCC | AT | 6th Dec 2007 |
| 195.93.158.0/23 | 512 | RIPE NCC | DE | 12th Dec 2007 |
| 195.93.194.0/23 | 512 | RIPE NCC | AT | 24th Dec 2007 |
| 195.93.214.0/23 | 512 | RIPE NCC | BG | 5th Nov 2019 |
| 195.93.232.0/23 | 512 | RIPE NCC | NO | 21st Jan 2008 |
| 195.93.236.0/23 | 512 | RIPE NCC | BG | 5th Nov 2019 |
| 195.93.249.0/24 | 256 | RIPE NCC | RU | 25th Jan 2022 |
| 195.95.136.0/24 | 256 | RIPE NCC |  BE | 16th May 2006 |
| 195.95.139.0/24 | 256 | RIPE NCC |  UA | 18th May 2006 |
| 195.95.140.0/24 | 256 | RIPE NCC | SE | 18th May 2006 |
| 195.95.141.0/24 | 256 | RIPE NCC | CH | 18th May 2006 |
| 195.95.142.0/24 | 256 | RIPE NCC |  IT | 18th May 2006 |
| 195.95.154.0/24 | 256 | RIPE NCC | PL | 23rd May 2006 |
| 195.95.169.0/24 | 256 | RIPE NCC | PL | 30th May 2006 |
| 195.95.170.0/24 | 256 | RIPE NCC | PL | 30th May 2006 |
| 195.95.176.0/24 | 256 | RIPE NCC |  UZ | 30th Mar 2026 |
| 195.95.182.0/24 | 256 | RIPE NCC | PL | 9th Jun 2006 |
| 195.95.190.0/24 | 256 | RIPE NCC | DE | 18th May 2020 |
| 195.95.192.0/22 | 1k | RIPE NCC | NL | 4th Nov 2004 |
| 195.95.196.0/23 | 512 | RIPE NCC | NL | 4th Nov 2004 |
| 195.95.212.0/23 | 512 | RIPE NCC | RU | 9th Nov 2004 |
| 195.95.237.0/24 | 256 | RIPE NCC | RO | 30th Apr 2024 |
| 195.95.244.0/24 | 256 | RIPE NCC | NL | 19th Nov 2004 |
| 195.95.250.0/23 | 512 | RIPE NCC | NO | 5th Nov 2019 |