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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 |
|---|---|---|---|---|
| 194.34.164.0/24 | 256 | RIPE NCC |  DE | 24th Jul 2025 |
| 194.34.192.0/22 | 1k | RIPE NCC | DE | 15th May 2018 |
| 194.35.242.0/23 | 512 | RIPE NCC | DE | 8th Jun 1994 |
| 194.37.84.0/22 | 1k | RIPE NCC | DE | 31st Aug 1994 |
| 194.39.0.0/20 | 4.1k | RIPE NCC | DE | 24th Feb 1994 |
| 194.39.100.0/24 | 256 | RIPE NCC | DE | 21st Mar 1994 |
| 194.39.120.0/24 | 256 | RIPE NCC | DE | 28th Feb 1994 |
| 194.39.136.0/22 | 1k | RIPE NCC | DE | 25th May 1994 |
| 194.39.142.0/24 | 256 | RIPE NCC | DE | 21st Nov 2019 |
| 194.39.151.0/24 | 256 | RIPE NCC | DE | 23rd Feb 1994 |
| 194.39.152.0/23 | 512 | RIPE NCC | DE | 21st Feb 1994 |
| 194.39.154.0/24 | 256 | RIPE NCC | DE | 21st Feb 1994 |
| 194.39.155.0/24 | 256 | RIPE NCC | DE | 18th Feb 1994 |
| 194.39.156.0/24 | 256 | RIPE NCC | DE | 18th Feb 1994 |
| 194.39.157.0/24 | 256 | RIPE NCC | DE | 21st Nov 2019 |
| 194.39.158.0/23 | 512 | RIPE NCC | DE | 18th Feb 1994 |
| 194.39.16.0/21 | 2k | RIPE NCC | DE | 24th Feb 1994 |
| 194.39.172.0/23 | 512 | RIPE NCC | DE | 17th Feb 1994 |
| 194.39.174.0/24 | 256 | RIPE NCC | DE | 21st Nov 2019 |
| 194.39.176.0/24 | 256 | RIPE NCC | DE | 21st Nov 2019 |
| 194.39.177.0/24 | 256 | RIPE NCC | DE | 17th Feb 1994 |
| 194.39.188.0/24 | 256 | RIPE NCC | DE | 15th Feb 1994 |
| 194.39.24.0/23 | 512 | RIPE NCC | DE | 24th Feb 1994 |
| 194.39.77.0/24 | 256 | RIPE NCC | DE | 10th Mar 1994 |
| 194.39.86.0/24 | 256 | RIPE NCC | DE | 11th Mar 1994 |
| 194.39.98.0/24 | 256 | RIPE NCC | DE | 17th Mar 1994 |
| 194.41.57.0/24 | 256 | RIPE NCC | DE | 18th Aug 1994 |
| 194.42.108.0/23 | 512 | RIPE NCC | DE | 14th Jun 2004 |
| 194.42.46.0/24 | 256 | RIPE NCC | DE | 1st Apr 2008 |
| 194.42.47.128/25 | 128 | RIPE NCC | DE | 28th Mar 2001 |
| 194.42.55.0/27 | 32 | RIPE NCC | DE | 28th Mar 2001 |
| 194.42.55.192/27 | 32 | RIPE NCC | DE | 8th May 2006 |
| 194.45.127.0/24 | 256 | RIPE NCC | DE | 28th Feb 1994 |
| 194.45.152.0/23 | 512 | RIPE NCC | DE | 28th Feb 1994 |
| 194.45.165.0/24 | 256 | RIPE NCC | DE | 28th Feb 1994 |
| 194.45.167.0/24 | 256 | RIPE NCC | DE | 28th Feb 1994 |
| 194.45.200.0/24 | 256 | RIPE NCC | DE | 28th Feb 1994 |
| 194.45.232.0/24 | 256 | RIPE NCC | DE | 28th Feb 1994 |
| 194.45.56.0/24 | 256 | RIPE NCC | DE | 28th Feb 1994 |
| 194.48.194.0/23 | 512 | RIPE NCC | DE | 21st Sept 1994 |
| 194.48.204.0/24 | 256 | RIPE NCC | DE | 13th Oct 2021 |
| 194.48.224.0/22 | 1k | RIPE NCC | DE | 26th Jul 2018 |
| 194.49.114.0/24 | 256 | RIPE NCC | DE | 19th Apr 1994 |
| 194.49.125.0/24 | 256 | RIPE NCC | DE | 19th Apr 1994 |
| 194.49.23.0/24 | 256 | RIPE NCC | DE | 24th Mar 1994 |
| 194.49.62.0/23 | 512 | RIPE NCC | DE | 30th Mar 1994 |
| 194.49.70.0/24 | 256 | RIPE NCC | DE | 30th Mar 1994 |
| 194.5.164.0/23 | 512 | RIPE NCC | DE | 18th Oct 2019 |
| 194.5.168.0/23 | 512 | RIPE NCC | DE | 18th Oct 2019 |
| 194.5.253.0/24 | 256 | RIPE NCC | DE | 8th Jun 1995 |