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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 in Germany
2,758 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 194.5.51.0/24 | 256 | RIPE NCC |  DE | 17th Oct 1994 |
| 194.50.182.0/24 | 256 | RIPE NCC | DE | 21st Apr 2006 |
| 194.50.217.0/24 | 256 | RIPE NCC | DE | 1st Sept 1993 |
| 194.50.225.0/24 | 256 | RIPE NCC | DE | 1st Sept 1993 |
| 194.50.68.0/23 | 512 | RIPE NCC | DE | 21st Mar 2006 |
| 194.50.70.0/24 | 256 | RIPE NCC | DE | 21st Mar 2006 |
| 194.53.108.0/22 | 1k | RIPE NCC | DE | 30th Jul 2018 |
| 194.54.4.0/22 | 1k | RIPE NCC | DE | 26th Oct 2005 |
| 194.54.69.0/24 | 256 | RIPE NCC | DE | 4th Mar 2026 |
| 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 |
| 194.56.181.0/24 | 256 | RIPE NCC | DE | 8th Jan 2025 |
| 194.59.143.0/24 | 256 | RIPE NCC | DE | 27th Jul 1994 |
| 194.59.144.0/21 | 2k | RIPE NCC | DE | 27th Jul 1994 |
| 194.59.172.0/22 | 1k | RIPE NCC | DE | 4th Aug 1994 |
| 194.59.189.0/24 | 256 | RIPE NCC | DE | 8th Mar 2007 |
| 194.59.190.0/23 | 512 | RIPE NCC | DE | 8th Mar 2007 |
| 194.59.212.0/24 | 256 | RIPE NCC | DE | 25th Jul 1994 |
| 194.59.252.0/22 | 1k | RIPE NCC | DE | 31st Jul 2018 |
| 194.59.42.0/23 | 512 | RIPE NCC | DE | 7th Jul 1994 |
| 194.59.60.0/22 | 1k | RIPE NCC | DE | 13th Jul 1994 |
| 194.59.64.0/19 | 8.2k | RIPE NCC | DE | 11th Jul 1994 |
| 194.61.26.0/24 | 256 | RIPE NCC | DE | 17th Aug 2023 |
| 194.62.103.0/24 | 256 | RIPE NCC | DE | 9th Nov 1994 |
| 194.62.20.0/24 | 256 | RIPE NCC | DE | 22nd Sept 1994 |
| 194.62.236.0/24 | 256 | RIPE NCC | DE | 28th Nov 2006 |
| 194.64.148.0/22 | 1k | RIPE NCC | DE | 6th Apr 1994 |
| 194.64.152.0/21 | 2k | RIPE NCC | DE | 6th Apr 1994 |
| 194.69.0.0/24 | 256 | RIPE NCC | DE | 20th Nov 1996 |
| 194.76.100.0/23 | 512 | RIPE NCC | DE | 1st Sept 1994 |
| 194.76.14.0/24 | 256 | RIPE NCC | DE | 11th Aug 1994 |
| 194.76.140.0/23 | 512 | RIPE NCC | DE | 8th Sept 1994 |
| 194.76.148.0/24 | 256 | RIPE NCC | DE | 16th Sept 1994 |
| 194.76.152.0/23 | 512 | RIPE NCC | DE | 16th Sept 1994 |
| 194.76.164.0/23 | 512 | RIPE NCC | DE | 18th Sept 1994 |
| 194.76.166.0/23 | 512 | RIPE NCC | DE | 18th Sept 1994 |
| 194.76.170.0/24 | 256 | RIPE NCC | DE | 18th Sept 1994 |
| 194.76.171.0/24 | 256 | RIPE NCC | DE | 19th Sept 1994 |
| 194.76.19.0/24 | 256 | RIPE NCC | DE | 16th Aug 1994 |
| 194.76.194.0/23 | 512 | RIPE NCC | DE | 22nd Sept 1994 |