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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 |
|---|---|---|---|---|
| 194.76.199.0/24 | 256 | RIPE NCC |  IT | 26th Jan 2026 |
| 194.76.20.0/22 | 1k | RIPE NCC |  DE | 16th Aug 1994 |
| 194.76.211.0/24 | 256 | RIPE NCC | DE | 28th Sept 1994 |
| 194.76.216.0/24 | 256 | RIPE NCC | DE | 28th Sept 1994 |
| 194.76.219.0/24 | 256 | RIPE NCC | DE | 19th Sept 1994 |
| 194.76.228.0/23 | 512 | RIPE NCC | DE | 5th Oct 1994 |
| 194.76.230.0/24 | 256 | RIPE NCC | DE | 5th Oct 1994 |
| 194.76.24.0/23 | 512 | RIPE NCC | DE | 16th Aug 1994 |
| 194.76.247.0/24 | 256 | RIPE NCC |  CZ | 5th Apr 2012 |
| 194.76.32.0/22 | 1k | RIPE NCC |  RO | 23rd May 2018 |
| 194.76.46.0/23 | 512 | RIPE NCC |  RU | 28th Oct 2019 |
| 194.76.56.0/23 | 512 | RIPE NCC | DE | 30th Aug 1994 |
| 194.76.96.0/22 | 1k | RIPE NCC | DE | 1st Sept 1994 |
| 194.77.133.0/24 | 256 | RIPE NCC | DE | 16th Oct 1995 |
| 194.77.154.0/24 | 256 | RIPE NCC |  FI | 22nd Nov 2019 |
| 194.77.218.0/24 | 256 | RIPE NCC | DE | 16th Oct 1995 |
| 194.77.54.0/23 | 512 | RIPE NCC | DE | 16th Oct 1995 |
| 194.77.64.0/24 | 256 | RIPE NCC |  US | 16th Oct 1995 |
| 194.77.86.0/23 | 512 | RIPE NCC | DE | 16th Oct 1995 |
| 194.79.224.0/20 | 4.1k | RIPE NCC |  NL | 11th Jan 1996 |
| 194.79.248.0/23 | 512 | RIPE NCC | DE | 5th Mar 1997 |
| 194.79.252.0/23 | 512 | RIPE NCC |  LU | 15th Jul 1998 |
| 194.79.48.0/22 | 1k | RIPE NCC |  GB | 23rd May 2018 |
| 194.79.60.0/22 | 1k | RIPE NCC |  AE | 25th Oct 2005 |
| 194.8.0.0/24 | 256 | RIPE NCC | DE | 31st Jul 1997 |
| 194.8.132.0/24 | 256 | RIPE NCC |  BE | 16th Aug 2021 |
| 194.8.248.0/23 | 512 | RIPE NCC |  UA | 20th Apr 2010 |
| 194.8.44.0/24 | 256 | RIPE NCC |  LV | 10th Nov 1993 |
| 194.8.49.0/24 | 256 | RIPE NCC | US | 14th Oct 2003 |
| 194.8.54.0/24 | 256 | RIPE NCC | GB | 15th Oct 2003 |
| 194.8.66.0/23 | 512 | RIPE NCC | DE | 5th Feb 2008 |
| 194.8.78.0/23 | 512 | RIPE NCC |  CH | 5th Feb 2008 |
| 194.8.9.0/24 | 256 | RIPE NCC | LV | 10th Nov 1993 |
| 194.8.92.0/23 | 512 | RIPE NCC | NL | 12th Feb 2008 |
| 194.85.0.0/24 | 256 | RIPE NCC | RU | 19th Aug 1994 |
| 194.85.100.0/23 | 512 | RIPE NCC | RU | 19th Aug 1994 |
| 194.85.116.0/24 | 256 | RIPE NCC | RU | 19th Aug 1994 |
| 194.85.12.0/23 | 512 | RIPE NCC | RU | 19th Aug 1994 |
| 194.85.176.0/24 | 256 | RIPE NCC | RU | 19th Aug 1994 |
| 194.85.177.0/24 | 256 | RIPE NCC | RU | 19th Aug 1994 |
| 194.85.185.0/24 | 256 | RIPE NCC | RU | 19th Aug 1994 |
| 194.85.186.0/23 | 512 | RIPE NCC | RU | 19th Aug 1994 |
| 194.85.188.0/24 | 256 | RIPE NCC | RU | 19th Aug 1994 |
| 194.85.189.0/24 | 256 | RIPE NCC | RU | 19th Aug 1994 |
| 194.85.190.0/23 | 512 | RIPE NCC | RU | 19th Aug 1994 |
| 194.85.240.0/21 | 2k | RIPE NCC | RU | 19th Aug 1994 |
| 194.85.3.0/24 | 256 | RIPE NCC | RU | 19th Aug 1994 |
| 194.85.72.0/22 | 1k | RIPE NCC | RU | 19th Aug 1994 |
| 194.88.0.0/24 | 256 | RIPE NCC | DE | 15th Nov 2004 |
| 194.88.136.0/23 | 512 | RIPE NCC |  IL | 19th Oct 2005 |