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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 |
|---|---|---|---|---|
| 194.0.31.0/24 | 256 | RIPE NCC |  NL | 4th Jul 2011 |
| 194.0.35.0/24 | 256 | RIPE NCC |  ES | 1st Sept 2011 |
| 194.0.47.0/24 | 256 | RIPE NCC |  DK | 19th Apr 2012 |
| 194.0.56.0/23 | 512 | RIPE NCC |  UA | 14th Sept 2012 |
| 194.0.7.0/24 | 256 | RIPE NCC |  BE | 24th Nov 2008 |
| 194.0.80.0/22 | 1k | RIPE NCC |  FI | 12th Oct 2006 |
| 194.1.132.0/22 | 1k | RIPE NCC |  KG | 27th Nov 1995 |
| 194.1.148.0/24 | 256 | RIPE NCC |  GB | 9th Feb 2007 |
| 194.1.160.0/24 | 256 | RIPE NCC |  IT | 16th Feb 2007 |
| 194.1.162.0/24 | 256 | RIPE NCC |  FR | 29th Sept 2025 |
| 194.1.177.0/24 | 256 | RIPE NCC | IT | 20th Nov 2019 |
| 194.1.179.0/24 | 256 | RIPE NCC | IT | 20th Nov 2019 |
| 194.1.190.0/24 | 256 | RIPE NCC |  CH | 31st Mar 2010 |
| 194.1.191.0/24 | 256 | RIPE NCC |  SK | 2nd Sept 1998 |
| 194.1.204.0/24 | 256 | RIPE NCC | NL | 22nd Feb 2007 |
| 194.1.211.0/24 | 256 | RIPE NCC |  SE | 27th Feb 2007 |
| 194.1.219.0/24 | 256 | RIPE NCC | SE | 15th Jun 2026 |
| 194.102.109.0/24 | 256 | RIPE NCC |  RO | 8th Jul 1998 |
| 194.102.110.0/23 | 512 | RIPE NCC | RO | 8th Jul 1998 |
| 194.102.112.0/24 | 256 | RIPE NCC | RO | 8th Jul 1998 |
| 194.102.114.0/23 | 512 | RIPE NCC | RO | 8th Jul 1998 |
| 194.102.116.0/24 | 256 | RIPE NCC | RO | 8th Jul 1998 |
| 194.102.119.0/24 | 256 | RIPE NCC | RO | 8th Jul 1998 |
| 194.102.130.0/24 | 256 | RIPE NCC | RO | 8th Jul 1998 |
| 194.102.136.0/23 | 512 | RIPE NCC | RO | 8th Jul 1998 |
| 194.102.142.0/23 | 512 | RIPE NCC | RO | 8th Jul 1998 |
| 194.102.144.0/23 | 512 | RIPE NCC | RO | 8th Jul 1998 |
| 194.102.152.0/21 | 2k | RIPE NCC | RO | 8th Jul 1998 |
| 194.102.163.0/24 | 256 | RIPE NCC | RO | 8th Jul 1998 |
| 194.102.164.0/22 | 1k | RIPE NCC | RO | 8th Jul 1998 |
| 194.102.191.0/24 | 256 | RIPE NCC | RO | 8th Jul 1998 |
| 194.102.196.0/22 | 1k | RIPE NCC | RO | 8th Jul 1998 |
| 194.102.205.0/24 | 256 | RIPE NCC | RO | 8th Jul 1998 |
| 194.102.206.0/23 | 512 | RIPE NCC | RO | 8th Jul 1998 |
| 194.102.209.0/24 | 256 | RIPE NCC | RO | 8th Jul 1998 |
| 194.102.210.0/23 | 512 | RIPE NCC | RO | 8th Jul 1998 |
| 194.102.212.0/23 | 512 | RIPE NCC | RO | 8th Jul 1998 |
| 194.102.214.0/24 | 256 | RIPE NCC | RO | 8th Jul 1998 |
| 194.102.222.0/24 | 256 | RIPE NCC | RO | 8th Jul 1998 |
| 194.102.232.0/23 | 512 | RIPE NCC | RO | 8th Jul 1998 |
| 194.102.236.0/23 | 512 | RIPE NCC | RO | 8th Jul 1998 |
| 194.102.242.0/24 | 256 | RIPE NCC | RO | 8th Jul 1998 |
| 194.102.244.0/22 | 1k | RIPE NCC | RO | 8th Jul 1998 |
| 194.102.46.0/23 | 512 | RIPE NCC | RO | 8th Jul 1998 |
| 194.102.48.0/21 | 2k | RIPE NCC | RO | 8th Jul 1998 |
| 194.102.65.0/24 | 256 | RIPE NCC | RO | 8th Jul 1998 |
| 194.102.68.0/24 | 256 | RIPE NCC | RO | 8th Jul 1998 |
| 194.102.69.0/24 | 256 | RIPE NCC | RO | 8th Jul 1998 |
| 194.102.71.0/24 | 256 | RIPE NCC | RO | 8th Jul 1998 |
| 194.102.75.0/24 | 256 | RIPE NCC | RO | 8th Jul 1998 |