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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 |
|---|---|---|---|---|
| 194.50.68.0/23 | 512 | RIPE NCC |  DE | 21st Mar 2006 |
| 194.50.70.0/24 | 256 | RIPE NCC | DE | 21st Mar 2006 |
| 194.50.75.0/24 | 256 | RIPE NCC |  PL | 21st Mar 2006 |
| 194.50.77.0/24 | 256 | RIPE NCC |  QA | 12th May 2025 |
| 194.50.82.0/24 | 256 | RIPE NCC |  IT | 21st Nov 2019 |
| 194.50.89.0/24 | 256 | RIPE NCC |  IL | 15th Apr 2026 |
| 194.53.108.0/22 | 1k | RIPE NCC | DE | 30th Jul 2018 |
| 194.53.113.0/24 | 256 | RIPE NCC |  NL | 23rd Sept 1994 |
| 194.53.121.0/24 | 256 | RIPE NCC |  GB | 18th Oct 1994 |
| 194.53.144.0/22 | 1k | RIPE NCC | NL | 21st Sept 2018 |
| 194.53.172.0/24 | 256 | RIPE NCC |  BE | 3rd Feb 1997 |
| 194.53.173.0/24 | 256 | RIPE NCC | NL | 15th Feb 1995 |
| 194.53.174.0/24 | 256 | RIPE NCC |  SA | 6th Aug 2025 |
| 194.53.184.0/22 | 1k | RIPE NCC |  RU | 21st Sept 2018 |
| 194.53.212.0/23 | 512 | RIPE NCC | NL | 24th Oct 1994 |
| 194.53.48.0/22 | 1k | RIPE NCC |  US | 30th Jul 2018 |
| 194.53.62.0/23 | 512 | RIPE NCC | NL | 29th Apr 1994 |
| 194.53.80.0/22 | 1k | RIPE NCC | NL | 29th Apr 1994 |
| 194.53.84.0/24 | 256 | RIPE NCC | NL | 22nd Jul 1994 |
| 194.53.96.0/21 | 2k | RIPE NCC | NL | 29th Apr 1994 |
| 194.54.128.0/22 | 1k | RIPE NCC |  RO | 22nd Jun 2004 |
| 194.54.132.0/22 | 1k | RIPE NCC | RU | 24th Jun 2004 |
| 194.54.156.0/24 | 256 | RIPE NCC |  MD | 8th Jul 2004 |
| 194.54.157.0/24 | 256 | RIPE NCC | MD | 8th Jul 2004 |
| 194.54.158.0/24 | 256 | RIPE NCC | MD | 8th Jul 2004 |
| 194.54.159.0/24 | 256 | RIPE NCC | MD | 8th Jul 2004 |
| 194.54.168.0/22 | 1k | RIPE NCC | IL | 2nd Feb 2006 |
| 194.54.4.0/22 | 1k | RIPE NCC | DE | 26th Oct 2005 |
| 194.54.68.0/24 | 256 | RIPE NCC |  SC | 20th Feb 2026 |
| 194.54.69.0/24 | 256 | RIPE NCC | DE | 4th Mar 2026 |
| 194.54.70.0/24 | 256 | RIPE NCC |  FR | 9th Mar 2026 |
| 194.54.71.0/24 | 256 | RIPE NCC |  TR | 9th Mar 2026 |
| 194.54.8.0/22 | 1k | RIPE NCC | GB | 7th Nov 2005 |
| 194.55.130.0/23 | 512 | RIPE NCC | DE | 21st May 1994 |
| 194.55.134.0/23 | 512 | RIPE NCC | DE | 21st May 1994 |
| 194.55.139.0/24 | 256 | RIPE NCC | DE | 21st May 1994 |
| 194.55.160.0/24 | 256 | RIPE NCC | DE | 2nd Jun 1994 |
| 194.55.172.0/22 | 1k | RIPE NCC | DE | 13th Jun 1994 |
| 194.55.176.0/22 | 1k | RIPE NCC | DE | 13th Jun 1994 |
| 194.55.190.0/23 | 512 | RIPE NCC | DE | 16th Jun 1994 |
| 194.55.246.0/23 | 512 | RIPE NCC | DE | 21st Jun 1994 |
| 194.55.252.0/23 | 512 | RIPE NCC | DE | 20th Jun 1994 |
| 194.55.254.0/24 | 256 | RIPE NCC | DE | 21st Jun 1994 |
| 194.55.41.0/24 | 256 | RIPE NCC | DE | 26th Apr 1994 |
| 194.55.64.0/20 | 4.1k | RIPE NCC | DE | 5th May 1994 |
| 194.55.80.0/22 | 1k | RIPE NCC | RO | 18th May 2018 |
| 194.56.112.0/21 | 2k | RIPE NCC |  CH | 1st Sept 1993 |
| 194.56.120.0/22 | 1k | RIPE NCC | CH | 1st Sept 1993 |
| 194.56.144.0/22 | 1k | RIPE NCC |  LI | 1st Sept 1993 |
| 194.56.154.0/23 | 512 | RIPE NCC | CH | 1st Sept 1993 |