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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 |
|---|---|---|---|---|
| 195.191.70.0/23 | 512 | RIPE NCC |  GB | 13th Jan 2010 |
| 195.191.78.0/23 | 512 | RIPE NCC |  RU | 5th Jan 2011 |
| 195.191.97.0/24 | 256 | RIPE NCC |  HU | 5th Sept 2012 |
| 195.192.248.0/23 | 512 | RIPE NCC |  DK | 3rd Apr 1996 |
| 195.192.253.0/24 | 256 | RIPE NCC |  DE | 3rd Apr 1996 |
| 195.2.194.0/23 | 512 | RIPE NCC | RU | 8th Dec 2008 |
| 195.2.230.0/23 | 512 | RIPE NCC |  KZ | 1st Nov 2007 |
| 195.2.234.0/24 | 256 | RIPE NCC |  IR | 26th Jul 2022 |
| 195.2.249.0/24 | 256 | RIPE NCC |  NL | 25th Apr 2022 |
| 195.2.252.0/23 | 512 | ARIN |  US | 24th Feb 2022 |
| 195.20.101.0/24 | 256 | RIPE NCC |  FR | 3rd Mar 2021 |
| 195.20.107.0/24 | 256 | RIPE NCC |  RO | 30th Oct 2002 |
| 195.20.110.0/23 | 512 | RIPE NCC |  PL | 1st Nov 2002 |
| 195.20.143.0/24 | 256 | RIPE NCC | NL | 22nd Nov 2019 |
| 195.20.214.0/23 | 512 | RIPE NCC | GB | 23rd Jun 2010 |
| 195.20.216.0/24 | 256 | RIPE NCC |  JO | 26th Jan 2026 |
| 195.20.217.0/24 | 256 | RIPE NCC | PL | 26th Jan 2026 |
| 195.200.192.0/24 | 256 | RIPE NCC | PL | 16th Jun 2025 |
| 195.200.193.0/24 | 256 | RIPE NCC |  GR | 2nd Aug 2006 |
| 195.200.195.0/24 | 256 | RIPE NCC | FR | 2nd Aug 2006 |
| 195.200.196.0/24 | 256 | RIPE NCC |  UA | 2nd Aug 2006 |
| 195.200.197.0/24 | 256 | RIPE NCC |  AT | 2nd Aug 2006 |
| 195.200.203.0/24 | 256 | RIPE NCC | RU | 7th Aug 2006 |
| 195.200.218.0/24 | 256 | RIPE NCC |  CH | 14th Aug 2006 |
| 195.200.27.0/24 | 256 | RIPE NCC | GB | 9th May 1996 |
| 195.200.76.0/24 | 256 | RIPE NCC | IR | 17th Jul 2024 |
| 195.206.128.0/20 | 4.1k | RIPE NCC | DE | 20th Dec 1996 |
| 195.206.144.0/20 | 4.1k | ARIN | US | 3rd Jun 2024 |
| 195.206.242.0/24 | 256 | RIPE NCC |  LV | 12th Sept 2022 |
| 195.206.243.0/24 | 256 | RIPE NCC |  HK | 12th Sept 2022 |
| 195.208.20.0/23 | 512 | RIPE NCC | RU | 19th Apr 1996 |
| 195.208.220.0/23 | 512 | RIPE NCC | RU | 19th Apr 1996 |
| 195.209.137.0/24 | 256 | RIPE NCC | RU | 19th Jul 1996 |
| 195.209.152.0/21 | 2k | RIPE NCC | RU | 19th Jul 1996 |
| 195.210.30.0/23 | 512 | RIPE NCC | RU | 14th May 2010 |
| 195.210.34.0/23 | 512 | RIPE NCC | PL | 6th Mar 2006 |
| 195.210.54.0/23 | 512 | RIPE NCC | GB | 14th Mar 2006 |
| 195.210.58.0/23 | 512 | RIPE NCC | DE | 14th Mar 2006 |
| 195.210.62.0/23 | 512 | RIPE NCC |  SE | 14th Mar 2006 |
| 195.211.127.0/24 | 256 | RIPE NCC | RO | 4th Dec 2023 |
| 195.211.132.0/22 | 1k | RIPE NCC | SE | 13th Oct 2009 |
| 195.211.160.0/22 | 1k | RIPE NCC | RU | 20th Oct 2009 |
| 195.211.32.0/22 | 1k | RIPE NCC |  LI | 11th Sept 2009 |
| 195.211.42.0/24 | 256 | RIPE NCC | RU | 14th Sept 2009 |
| 195.211.70.0/24 | 256 | RIPE NCC | FR | 26th Jun 2025 |
| 195.214.213.0/24 | 256 | RIPE NCC | US | 28th Oct 2003 |
| 195.214.214.0/24 | 256 | RIPE NCC | US | 28th Oct 2003 |
| 195.214.232.0/24 | 256 | RIPE NCC | CH | 3rd Feb 2005 |
| 195.214.236.0/22 | 1k | RIPE NCC | RU | 30th Jun 2006 |
| 195.216.219.0/24 | 256 | RIPE NCC | DE | 25th Nov 2019 |