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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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
2,747 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 149.19.144.0/21 | 2k | RIPE NCC |  DE | 1st Jun 1993 |
| 149.19.152.0/22 | 1k | RIPE NCC | DE | 1st Jun 1993 |
| 149.207.0.0/16 | 65.5k | RIPE NCC | DE | 10th Jan 1994 |
| 149.212.0.0/16 | 65.5k | RIPE NCC | DE | 1st Jan 1984 |
| 149.213.0.0/16 | 65.5k | RIPE NCC | DE | 1st Sept 1993 |
| 149.233.64.0/18 | 16.4k | RIPE NCC | DE | 5th May 1993 |
| 149.245.0.0/16 | 65.5k | RIPE NCC | DE | 1st Sept 1993 |
| 149.246.0.0/16 | 65.5k | RIPE NCC | DE | 28th Sept 1992 |
| 149.249.0.0/21 | 2k | RIPE NCC | DE | 1st Sept 1993 |
| 149.249.10.0/23 | 512 | RIPE NCC | DE | 1st Sept 1993 |
| 149.62.56.0/21 | 2k | RIPE NCC | DE | 21st Oct 2011 |
| 151.237.248.0/21 | 2k | RIPE NCC | DE | 16th Aug 2012 |
| 152.89.212.0/22 | 1k | RIPE NCC | DE | 28th Jan 2019 |
| 152.89.88.0/22 | 1k | RIPE NCC | DE | 24th Jan 2019 |
| 153.17.0.0/16 | 65.5k | RIPE NCC | DE | 23rd Sept 1991 |
| 153.60.192.0/18 | 16.4k | RIPE NCC | DE | 23rd Sept 1991 |
| 153.60.32.0/19 | 8.2k | RIPE NCC | DE | 23rd Sept 1991 |
| 153.76.252.0/22 | 1k | RIPE NCC | DE | 23rd Sept 1991 |
| 153.76.32.0/19 | 8.2k | RIPE NCC | DE | 23rd Sept 1991 |
| 153.93.0.0/16 | 65.5k | RIPE NCC | DE | 23rd Sept 1991 |
| 153.94.0.0/20 | 4.1k | RIPE NCC | DE | 23rd Sept 1991 |
| 155.133.196.0/22 | 1k | RIPE NCC | DE | 7th Nov 1991 |
| 156.67.6.0/29 | 8 | RIPE NCC | DE | 27th Mar 1992 |
| 156.67.6.128/25 | 128 | RIPE NCC | DE | 27th Mar 1992 |
| 156.67.6.16/29 | 8 | RIPE NCC | DE | 27th Mar 1992 |
| 156.67.6.24/29 | 8 | RIPE NCC | DE | 27th Mar 1992 |
| 156.67.6.32/29 | 8 | RIPE NCC | DE | 27th Mar 1992 |
| 156.67.6.40/29 | 8 | RIPE NCC | DE | 27th Mar 1992 |
| 156.67.6.48/28 | 16 | RIPE NCC | DE | 27th Mar 1992 |
| 156.67.6.64/26 | 64 | RIPE NCC | DE | 27th Mar 1992 |
| 156.67.6.8/29 | 8 | RIPE NCC | DE | 27th Mar 1992 |
| 157.162.0.0/16 | 65.5k | RIPE NCC | DE | 7th Apr 2004 |
| 157.163.0.0/16 | 65.5k | RIPE NCC | DE | 30th Dec 1991 |
| 157.180.188.0/22 | 1k | RIPE NCC | DE | 7th Apr 2004 |
| 157.97.164.0/22 | 1k | RIPE NCC | DE | 13th Jul 1995 |
| 157.97.72.0/22 | 1k | RIPE NCC | DE | 13th Jul 1995 |
| 158.226.0.0/16 | 65.5k | RIPE NCC | DE | 3rd Apr 1992 |
| 158.255.72.0/24 | 256 | RIPE NCC | DE | 30th Aug 2021 |
| 158.92.0.0/16 | 65.5k | RIPE NCC | DE | 20th Feb 1992 |
| 158.94.164.0/23 | 512 | RIPE NCC | DE | 20th Feb 1992 |
| 158.94.166.0/24 | 256 | RIPE NCC | DE | 20th Feb 1992 |
| 160.100.0.0/16 | 65.5k | RIPE NCC | DE | 5th Apr 2004 |
| 160.44.128.0/18 | 16.4k | RIPE NCC | DE | 23rd Apr 1992 |
| 160.47.0.0/16 | 65.5k | RIPE NCC | DE | 21st May 1992 |
| 160.49.0.0/16 | 65.5k | RIPE NCC | DE | 21st May 1992 |
| 160.50.0.0/16 | 65.5k | RIPE NCC | DE | 21st May 1992 |
| 160.52.0.0/16 | 65.5k | RIPE NCC | DE | 21st May 1992 |
| 160.70.0.0/16 | 65.5k | RIPE NCC | DE | 5th Apr 2004 |
| 161.218.0.0/16 | 65.5k | RIPE NCC | DE | 1st Sept 1993 |
| 161.38.64.0/18 | 16.4k | RIPE NCC | DE | 14th May 1992 |