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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 |
|---|---|---|---|---|
| 195.234.96.0/24 | 256 | RIPE NCC |  RU | 23rd Feb 2009 |
| 195.234.97.0/24 | 256 | RIPE NCC | RU | 23rd Feb 2009 |
| 195.238.172.0/22 | 1k | RIPE NCC |  DE | 21st Jun 2006 |
| 195.238.225.0/24 | 256 | RIPE NCC |  GB | 8th Jan 2025 |
| 195.238.237.0/24 | 256 | RIPE NCC | GB | 9th Mar 2005 |
| 195.238.239.0/24 | 256 | RIPE NCC | RU | 10th Mar 2005 |
| 195.238.248.0/24 | 256 | RIPE NCC |  BG | 25th Nov 2019 |
| 195.238.249.0/24 | 256 | RIPE NCC | GB | 18th Mar 2005 |
| 195.238.66.0/23 | 512 | RIPE NCC |  PL | 13th Jan 2006 |
| 195.238.68.0/23 | 512 | RIPE NCC |  NL | 6th Nov 2019 |
| 195.238.70.0/23 | 512 | RIPE NCC | PL | 13th Jan 2006 |
| 195.238.78.0/23 | 512 | RIPE NCC | NL | 6th Nov 2019 |
| 195.24.230.0/23 | 512 | RIPE NCC | GB | 4th Apr 2008 |
| 195.24.238.0/23 | 512 | RIPE NCC |  RO | 14th Apr 2008 |
| 195.24.250.0/23 | 512 | RIPE NCC | GB | 21st Apr 2008 |
| 195.24.252.0/23 | 512 | RIPE NCC |  UA | 22nd Apr 2008 |
| 195.24.80.0/21 | 2k | AFRINIC |  DZ | 20th Sept 2007 |
| 195.242.120.0/23 | 512 | RIPE NCC |  DK | 23rd Dec 2004 |
| 195.242.136.0/23 | 512 | RIPE NCC |  ES | 6th Dec 2006 |
| 195.242.154.0/23 | 512 | RIPE NCC | GB | 12th Dec 2006 |
| 195.242.158.0/23 | 512 | RIPE NCC | RO | 12th Dec 2006 |
| 195.242.160.0/24 | 256 | RIPE NCC | DK | 17th Jun 2008 |
| 195.242.161.0/24 | 256 | RIPE NCC | UA | 17th Jun 2008 |
| 195.242.168.0/24 | 256 | RIPE NCC |  AT | 19th Jun 2008 |
| 195.242.170.0/24 | 256 | RIPE NCC |  IT | 10th Jan 2024 |
| 195.242.172.0/24 | 256 | RIPE NCC |  BE | 20th Jun 2008 |
| 195.242.189.0/24 | 256 | RIPE NCC |  HK | 11th Mar 2026 |
| 195.242.208.0/22 | 1k | RIPE NCC | RO | 8th Jun 2018 |
| 195.242.221.0/24 | 256 | RIPE NCC |  FR | 14th Sept 2004 |
| 195.242.222.0/24 | 256 | RIPE NCC | FR | 14th Sept 2004 |
| 195.242.223.0/24 | 256 | RIPE NCC | GB | 14th Sept 2004 |
| 195.242.224.0/23 | 512 | RIPE NCC | DE | 14th Sept 2004 |
| 195.242.248.0/22 | 1k | RIPE NCC |  LI | 21st Sept 2004 |
| 195.242.70.0/23 | 512 | RIPE NCC | GB | 29th Nov 2004 |
| 195.242.76.0/23 | 512 | RIPE NCC |  RS | 1st Dec 2004 |
| 195.242.96.0/23 | 512 | RIPE NCC | NL | 15th Dec 2004 |
| 195.244.16.0/23 | 512 | RIPE NCC | GB | 20th Mar 2006 |
| 195.244.26.0/23 | 512 | RIPE NCC | PL | 21st Mar 2006 |
| 195.244.30.0/23 | 512 | RIPE NCC | FR | 22nd Mar 2006 |
| 195.244.8.0/23 | 512 | RIPE NCC | UA | 16th Mar 2006 |
| 195.245.192.0/24 | 256 | RIPE NCC | DE | 26th Nov 2002 |
| 195.245.193.0/24 | 256 | RIPE NCC |  SE | 26th Nov 2002 |
| 195.245.194.0/24 | 256 | RIPE NCC |  LV | 15th Oct 2007 |
| 195.245.195.0/24 | 256 | RIPE NCC |  SK | 25th Nov 2019 |
| 195.245.198.0/24 | 256 | RIPE NCC | GB | 7th Jun 2023 |
| 195.245.199.0/24 | 256 | RIPE NCC | DE | 27th Nov 2002 |
| 195.245.207.0/24 | 256 | RIPE NCC | SK | 25th Nov 2019 |
| 195.245.210.0/24 | 256 | RIPE NCC | DK | 11th Dec 2002 |
| 195.245.212.0/24 | 256 | RIPE NCC | ES | 11th Dec 2002 |
| 195.245.221.0/24 | 256 | RIPE NCC |  KZ | 30th Dec 2002 |