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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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
85,239 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 194.113.209.0/24 | 256 | RIPE NCC |  RU | 22nd Nov 2019 |
| 194.113.212.0/22 | 1k | RIPE NCC |  GB | 24th May 2018 |
| 194.113.218.0/24 | 256 | RIPE NCC |  DE | 16th Jan 1995 |
| 194.113.221.0/24 | 256 | RIPE NCC | DE | 17th Jan 1995 |
| 194.113.224.0/23 | 512 | RIPE NCC | DE | 18th Jan 1995 |
| 194.113.243.0/24 | 256 | RIPE NCC | DE | 19th Jan 1995 |
| 194.113.33.0/24 | 256 | RIPE NCC | DE | 29th Nov 1994 |
| 194.113.56.0/24 | 256 | RIPE NCC | DE | 6th Dec 1994 |
| 194.113.70.0/24 | 256 | RIPE NCC |  TR | 22nd Nov 2019 |
| 194.113.82.0/23 | 512 | RIPE NCC | DE | 9th Dec 1994 |
| 194.113.84.0/22 | 1k | RIPE NCC | DE | 12th Dec 1994 |
| 194.113.92.0/24 | 256 | RIPE NCC | TR | 22nd Nov 2019 |
| 194.114.140.0/22 | 1k | RIPE NCC |  SE | 19th Aug 2004 |
| 194.114.145.0/24 | 256 | RIPE NCC |  FR | 5th Dec 2011 |
| 194.114.152.0/21 | 2k | RIPE NCC | SE | 28th Nov 1994 |
| 194.114.160.0/19 | 8.2k | RIPE NCC | SE | 28th Nov 1994 |
| 194.116.100.0/24 | 256 | RIPE NCC |  IT | 19th Sept 2002 |
| 194.116.134.0/23 | 512 | RIPE NCC |  PL | 5th Jan 2005 |
| 194.116.140.0/24 | 256 | RIPE NCC |  KZ | 14th Nov 2024 |
| 194.116.144.0/23 | 512 | RIPE NCC | FR | 13th Jan 2005 |
| 194.116.160.0/23 | 512 | RIPE NCC | GB | 19th Jan 2005 |
| 194.116.162.0/23 | 512 | RIPE NCC | RU | 20th Jan 2005 |
| 194.116.168.0/24 | 256 | RIPE NCC |  IL | 11th Oct 2011 |
| 194.116.188.0/23 | 512 | RIPE NCC |  EE | 1st Feb 2005 |
| 194.116.190.0/23 | 512 | RIPE NCC | RU | 30th Oct 2019 |
| 194.116.214.0/23 | 512 | RIPE NCC | RU | 30th Oct 2019 |
| 194.116.216.0/23 | 512 | RIPE NCC | RU | 30th Oct 2019 |
| 194.116.238.0/24 | 256 | RIPE NCC | GB | 3rd Sept 2025 |
| 194.116.244.0/23 | 512 | RIPE NCC |  GG | 23rd Feb 2005 |
| 194.116.252.0/23 | 512 | RIPE NCC | PL | 4th Mar 2005 |
| 194.116.64.0/21 | 2k | RIPE NCC | IT | 19th Sept 2002 |
| 194.117.240.0/23 | 512 | RIPE NCC | PL | 14th Sept 2005 |
| 194.117.50.0/26 | 64 | RIPE NCC |  TJ | 23rd Jun 2025 |
| 194.117.50.128/25 | 128 | RIPE NCC | RU | 10th Mar 2005 |
| 194.117.50.64/26 | 64 | RIPE NCC |  CH | 15th Jul 2025 |
| 194.117.52.0/25 | 128 | RIPE NCC |  CY | 14th Sept 2012 |
| 194.117.52.128/26 | 64 | RIPE NCC |  JP | 21st Aug 2025 |
| 194.117.52.192/26 | 64 | RIPE NCC |  TM | 25th Aug 2025 |
| 194.117.53.0/26 | 64 | RIPE NCC |  ES | 8th Sept 2025 |
| 194.117.53.128/25 | 128 | RIPE NCC |  NO | 20th Oct 2005 |
| 194.117.53.64/26 | 64 | RIPE NCC | TR | 12th Sept 2025 |
| 194.117.54.0/25 | 128 | RIPE NCC | DE | 26th Oct 2005 |
| 194.117.54.128/25 | 128 | RIPE NCC | GB | 25th Nov 2005 |
| 194.117.55.128/25 | 128 | RIPE NCC |  RO | 2nd Apr 2008 |
| 194.117.55.64/26 | 64 | RIPE NCC |  AL | 12th Sept 2025 |
| 194.117.62.0/24 | 256 | RIPE NCC |  IQ | 15th Jun 2005 |
| 194.117.67.0/24 | 256 | RIPE NCC | DE | 13th Oct 2025 |
| 194.117.71.0/24 | 256 | RIPE NCC | DE | 13th Oct 2025 |
| 194.117.73.0/24 | 256 | RIPE NCC | GB | 13th Oct 2025 |
| 194.117.74.0/24 | 256 | RIPE NCC | DE | 13th Oct 2025 |