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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 |
|---|---|---|---|---|
| 193.16.184.0/23 | 512 | RIPE NCC |  DE | 7th Mar 1995 |
| 193.16.212.0/24 | 256 | RIPE NCC | DE | 29th Jul 1992 |
| 193.16.214.0/23 | 512 | RIPE NCC | DE | 29th Jul 1992 |
| 193.16.222.0/23 | 512 | RIPE NCC | DE | 29th Jul 1992 |
| 193.16.228.0/24 | 256 | RIPE NCC | DE | 29th Jul 1992 |
| 193.16.230.0/23 | 512 | RIPE NCC | DE | 29th Jul 1992 |
| 193.16.248.0/24 | 256 | RIPE NCC | DE | 29th Jul 1992 |
| 193.16.249.0/24 | 256 | RIPE NCC | DE | 29th Jul 1992 |
| 193.16.250.0/23 | 512 | RIPE NCC | DE | 29th Jul 1992 |
| 193.16.252.0/23 | 512 | RIPE NCC | DE | 29th Jul 1992 |
| 193.16.254.0/24 | 256 | RIPE NCC | DE | 29th Jul 1992 |
| 193.16.64.0/21 | 2k | RIPE NCC | DE | 29th Jul 1992 |
| 193.160.139.0/24 | 256 | RIPE NCC | DE | 18th Nov 2019 |
| 193.160.159.0/24 | 256 | RIPE NCC | DE | 18th Nov 2019 |
| 193.160.238.0/24 | 256 | RIPE NCC | DE | 18th Nov 2019 |
| 193.160.253.0/24 | 256 | RIPE NCC | DE | 18th Nov 2019 |
| 193.162.100.0/24 | 256 | RIPE NCC | DE | 4th Feb 2021 |
| 193.162.41.0/24 | 256 | RIPE NCC | DE | 23rd Sept 2020 |
| 193.169.10.0/23 | 512 | RIPE NCC | DE | 8th May 2009 |
| 193.17.17.0/24 | 256 | RIPE NCC | DE | 29th Jul 1992 |
| 193.17.171.0/24 | 256 | RIPE NCC | DE | 21st Jan 2004 |
| 193.17.254.0/24 | 256 | RIPE NCC | DE | 2nd Dec 2003 |
| 193.17.62.0/23 | 512 | RIPE NCC | DE | 16th Dec 1992 |
| 193.17.77.0/24 | 256 | RIPE NCC | DE | 15th Jun 2004 |
| 193.176.188.0/23 | 512 | RIPE NCC | DE | 15th Apr 1993 |
| 193.176.24.0/22 | 1k | RIPE NCC | DE | 14th Sept 2018 |
| 193.177.148.0/22 | 1k | RIPE NCC | DE | 15th Apr 1993 |
| 193.178.185.0/24 | 256 | RIPE NCC | DE | 16th Jul 2002 |
| 193.186.254.0/24 | 256 | RIPE NCC | DE | 9th Aug 1993 |
| 193.186.3.0/24 | 256 | RIPE NCC | DE | 16th Oct 2007 |
| 193.187.84.0/22 | 1k | RIPE NCC | DE | 9th May 2018 |
| 193.188.138.0/23 | 512 | RIPE NCC | DE | 15th Oct 2019 |
| 193.189.106.0/23 | 512 | RIPE NCC | DE | 2nd May 2005 |
| 193.189.150.0/23 | 512 | RIPE NCC | DE | 24th Sept 1996 |
| 193.189.82.0/23 | 512 | RIPE NCC | DE | 26th Apr 2005 |
| 193.189.84.0/23 | 512 | RIPE NCC | DE | 15th Oct 2019 |
| 193.19.0.0/19 | 8.2k | RIPE NCC | DE | 22nd Sept 1992 |
| 193.194.6.0/23 | 512 | RIPE NCC | DE | 1st Aug 1997 |
| 193.200.150.0/24 | 256 | RIPE NCC | DE | 22nd Jun 2026 |
| 193.200.193.0/24 | 256 | RIPE NCC | DE | 21st May 2007 |
| 193.200.210.0/24 | 256 | RIPE NCC | DE | 25th May 2007 |
| 193.200.218.0/24 | 256 | RIPE NCC | DE | 8th Jan 2009 |
| 193.200.230.0/24 | 256 | RIPE NCC | DE | 5th Jun 2007 |
| 193.200.249.0/24 | 256 | RIPE NCC | DE | 13th Jun 2007 |
| 193.201.145.128/26 | 64 | RIPE NCC | DE | 11th Dec 2024 |
| 193.201.145.192/26 | 64 | RIPE NCC | DE | 12th Dec 2024 |
| 193.201.148.64/26 | 64 | RIPE NCC | DE | 9th May 2003 |
| 193.201.149.0/26 | 64 | RIPE NCC | DE | 3rd Jul 2023 |
| 193.201.151.192/26 | 64 | RIPE NCC | DE | 4th Jul 2005 |
| 193.201.151.64/26 | 64 | RIPE NCC | DE | 24th Jan 2024 |