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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 |
|---|---|---|---|---|
| 37.35.72.0/21 | 2k | RIPE NCC |  DE | 5th Jan 2012 |
| 37.72.105.0/24 | 256 | RIPE NCC | DE | 26th Jan 2012 |
| 45.12.92.0/22 | 1k | RIPE NCC | DE | 1st May 2019 |
| 45.128.224.0/22 | 1k | RIPE NCC | DE | 12th Jul 2019 |
| 45.128.252.0/22 | 1k | RIPE NCC | DE | 12th Jul 2019 |
| 45.129.93.0/24 | 256 | RIPE NCC | DE | 15th Jul 2019 |
| 45.13.216.0/22 | 1k | RIPE NCC | DE | 7th May 2019 |
| 45.130.180.0/22 | 1k | RIPE NCC | DE | 18th Jul 2019 |
| 45.130.232.0/22 | 1k | RIPE NCC | DE | 18th Jul 2019 |
| 45.131.232.0/22 | 1k | RIPE NCC | DE | 22nd Jul 2019 |
| 45.132.52.0/22 | 1k | RIPE NCC | DE | 22nd Jul 2019 |
| 45.134.116.0/22 | 1k | RIPE NCC | DE | 26th Jul 2019 |
| 45.136.176.0/22 | 1k | RIPE NCC | DE | 2nd Aug 2019 |
| 45.137.168.0/22 | 1k | RIPE NCC | DE | 5th Aug 2019 |
| 45.139.248.0/22 | 1k | RIPE NCC | DE | 12th Aug 2019 |
| 45.14.100.0/22 | 1k | RIPE NCC | DE | 8th May 2019 |
| 45.140.200.0/22 | 1k | RIPE NCC | DE | 13th Aug 2019 |
| 45.141.140.0/22 | 1k | RIPE NCC | DE | 15th Aug 2019 |
| 45.142.4.0/22 | 1k | RIPE NCC | DE | 16th Aug 2019 |
| 45.144.80.0/22 | 1k | RIPE NCC | DE | 22nd Aug 2019 |
| 45.144.96.0/22 | 1k | RIPE NCC | DE | 22nd Aug 2019 |
| 45.145.37.0/24 | 256 | RIPE NCC | DE | 29th Jan 2024 |
| 45.146.20.0/22 | 1k | RIPE NCC | DE | 27th Aug 2019 |
| 45.146.92.0/22 | 1k | RIPE NCC | DE | 28th Aug 2019 |
| 45.147.172.0/22 | 1k | RIPE NCC | DE | 30th Aug 2019 |
| 45.147.36.0/22 | 1k | RIPE NCC | DE | 30th Aug 2019 |
| 45.147.72.0/22 | 1k | RIPE NCC | DE | 30th Aug 2019 |
| 45.148.136.0/22 | 1k | RIPE NCC | DE | 3rd Sept 2019 |
| 45.148.224.0/22 | 1k | RIPE NCC | DE | 3rd Sept 2019 |
| 45.149.53.0/24 | 256 | RIPE NCC | DE | 4th Jun 2021 |
| 45.150.100.0/22 | 1k | RIPE NCC | DE | 6th Sept 2019 |
| 45.151.164.0/23 | 512 | RIPE NCC | DE | 10th Sept 2019 |
| 45.152.108.0/22 | 1k | RIPE NCC | DE | 11th Sept 2019 |
| 45.152.244.0/22 | 1k | RIPE NCC | DE | 12th Sept 2019 |
| 45.153.144.0/22 | 1k | RIPE NCC | DE | 13th Sept 2019 |
| 45.157.172.0/23 | 512 | RIPE NCC | DE | 26th Sept 2019 |
| 45.157.28.0/22 | 1k | RIPE NCC | DE | 24th Sept 2019 |
| 45.158.132.0/22 | 1k | RIPE NCC | DE | 27th Sept 2019 |
| 45.158.248.0/22 | 1k | RIPE NCC | DE | 30th Sept 2019 |
| 45.158.64.0/22 | 1k | RIPE NCC | DE | 27th Sept 2019 |
| 45.159.132.0/22 | 1k | RIPE NCC | DE | 1st Oct 2019 |
| 45.66.136.0/22 | 1k | RIPE NCC | DE | 13th Feb 2019 |
| 45.80.109.0/24 | 256 | RIPE NCC | DE | 15th May 2019 |
| 45.81.4.0/22 | 1k | RIPE NCC | DE | 16th May 2019 |
| 45.82.20.0/22 | 1k | RIPE NCC | DE | 22nd May 2019 |
| 45.82.24.0/22 | 1k | RIPE NCC | DE | 22nd May 2019 |
| 45.83.196.0/22 | 1k | RIPE NCC | DE | 28th May 2019 |
| 45.85.112.0/22 | 1k | RIPE NCC | DE | 5th Jun 2019 |
| 45.88.212.0/22 | 1k | RIPE NCC | DE | 19th Jun 2019 |
| 45.9.176.0/22 | 1k | RIPE NCC | DE | 23rd Apr 2019 |