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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 unannounced space registered through RIPE NCC, largest first.
Unannounced blocks registered through RIPE NCC
25,296 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 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 |
| 194.117.75.0/24 | 256 | RIPE NCC |  PT | 13th Oct 2025 |
| 194.117.77.0/24 | 256 | RIPE NCC | CY | 13th Oct 2025 |
| 194.117.78.0/24 | 256 | RIPE NCC | CH | 13th Oct 2025 |
| 194.117.79.0/24 | 256 | RIPE NCC | RO | 13th Oct 2025 |
| 194.117.82.0/24 | 256 | RIPE NCC |  IR | 14th Oct 2025 |
| 194.117.89.0/24 | 256 | RIPE NCC | RU | 15th Oct 2025 |
| 194.117.90.0/24 | 256 | RIPE NCC | CH | 15th Oct 2025 |
| 194.117.91.0/24 | 256 | RIPE NCC | DE | 15th Oct 2025 |
| 194.117.93.0/24 | 256 | RIPE NCC | PT | 15th Oct 2025 |
| 194.117.95.0/24 | 256 | RIPE NCC | DE | 15th Oct 2025 |
| 194.117.96.0/19 | 8.2k | RIPE NCC | DE | 2nd Jul 1996 |
| 194.120.116.0/24 | 256 | RIPE NCC | RU | 22nd Nov 2019 |
| 194.120.119.0/24 | 256 | RIPE NCC | DE | 21st Dec 1994 |
| 194.120.231.0/24 | 256 | RIPE NCC |  SE | 21st Dec 1994 |
| 194.120.24.0/24 | 256 | RIPE NCC | RU | 22nd Nov 2019 |
| 194.120.249.0/24 | 256 | RIPE NCC | DE | 21st Dec 1994 |
| 194.121.49.0/24 | 256 | RIPE NCC |  US | 31st Jul 1995 |
| 194.121.56.0/24 | 256 | RIPE NCC | DE | 31st Jul 1995 |
| 194.124.0.0/19 | 8.2k | RIPE NCC | CH | 1st Sept 1993 |
| 194.124.160.0/21 | 2k | RIPE NCC |  FR | 1st Sept 1993 |
| 194.124.168.0/21 | 2k | RIPE NCC |  NL | 1st Sept 1993 |
| 194.124.212.0/24 | 256 | RIPE NCC | CH | 1st Sept 1993 |
| 194.124.226.0/24 | 256 | RIPE NCC | DE | 1st Sept 1993 |
| 194.124.238.0/24 | 256 | RIPE NCC | CH | 1st Sept 1993 |
| 194.124.242.0/24 | 256 | RIPE NCC | CH | 1st Sept 1993 |
| 194.124.243.0/24 | 256 | RIPE NCC | CH | 1st Sept 1993 |
| 194.124.246.0/24 | 256 | RIPE NCC | CH | 1st Sept 1993 |
| 194.124.253.0/24 | 256 | RIPE NCC | CH | 1st Sept 1993 |
| 194.124.44.0/22 | 1k | RIPE NCC | DE | 31st Oct 2018 |
| 194.126.132.0/22 | 1k | RIPE NCC |  LU | 28th May 2018 |
| 194.126.150.0/23 | 512 | RIPE NCC |  IE | 10th May 2005 |
| 194.126.188.0/22 | 1k | RIPE NCC | GB | 22nd Sept 2006 |