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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 Finland
329 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 109.106.8.0/22 | 1k | RIPE NCC |  FI | 12th Oct 2018 |
| 109.70.176.0/21 | 2k | RIPE NCC | FI | 9th Nov 2009 |
| 109.75.224.0/21 | 2k | RIPE NCC | FI | 24th Nov 2009 |
| 137.33.0.0/16 | 65.5k | RIPE NCC | FI | 17th Oct 1989 |
| 143.51.0.0/17 | 32.8k | RIPE NCC | FI | 28th Aug 1990 |
| 146.161.0.0/16 | 65.5k | RIPE NCC | FI | 15th Feb 1991 |
| 149.197.0.0/16 | 65.5k | RIPE NCC | FI | 13th May 1991 |
| 151.105.0.0/16 | 65.5k | ARIN | FI | 30th May 1991 |
| 158.131.0.0/16 | 65.5k | RIPE NCC | FI | 6th Mar 1992 |
| 159.152.0.0/16 | 65.5k | RIPE NCC | FI | 1st Sept 1993 |
| 164.13.0.0/16 | 65.5k | RIPE NCC | FI | 4th Nov 1992 |
| 164.5.232.0/23 | 512 | RIPE NCC | FI | 25th Sept 1992 |
| 164.5.234.0/23 | 512 | RIPE NCC | FI | 25th Sept 1992 |
| 164.5.236.0/22 | 1k | RIPE NCC | FI | 25th Sept 1992 |
| 185.1.86.0/24 | 256 | RIPE NCC | FI | 2nd Feb 2017 |
| 185.115.16.0/22 | 1k | RIPE NCC | FI | 27th Aug 2015 |
| 185.123.132.0/22 | 1k | RIPE NCC | FI | 27th Oct 2015 |
| 185.151.76.0/22 | 1k | RIPE NCC | FI | 9th May 2016 |
| 185.173.208.0/22 | 1k | RIPE NCC | FI | 19th Oct 2016 |
| 185.177.208.0/24 | 256 | RIPE NCC | FI | 31st Dec 2019 |
| 185.192.128.0/22 | 1k | RIPE NCC | FI | 1st Mar 2017 |
| 185.238.184.0/22 | 1k | RIPE NCC | FI | 28th Dec 2017 |
| 185.26.215.0/24 | 256 | RIPE NCC | FI | 24th Feb 2025 |
| 185.39.128.0/22 | 1k | RIPE NCC | FI | 31st Oct 2013 |
| 185.61.232.0/22 | 1k | RIPE NCC | FI | 24th Jun 2014 |
| 185.68.56.0/24 | 256 | RIPE NCC | FI | 26th Aug 2014 |
| 185.68.57.0/24 | 256 | RIPE NCC | FI | 26th Aug 2014 |
| 185.74.220.0/24 | 256 | RIPE NCC | FI | 26th Sept 2022 |
| 185.92.112.0/22 | 1k | RIPE NCC | FI | 18th Mar 2015 |
| 185.98.228.0/22 | 1k | RIPE NCC | FI | 4th May 2015 |
| 192.101.192.0/24 | 256 | RIPE NCC | FI | 19th Jul 1991 |
| 192.102.18.0/23 | 512 | RIPE NCC | FI | 8th Mar 1991 |
| 192.102.20.0/22 | 1k | RIPE NCC | FI | 8th Mar 1991 |
| 192.102.24.0/21 | 2k | RIPE NCC | FI | 8th Mar 1991 |
| 192.102.64.0/23 | 512 | RIPE NCC | FI | 8th Mar 1991 |
| 192.102.66.0/23 | 512 | RIPE NCC | FI | 8th Mar 1991 |
| 192.102.68.0/22 | 1k | RIPE NCC | FI | 8th Mar 1991 |
| 192.102.72.0/21 | 2k | RIPE NCC | FI | 8th Mar 1991 |
| 192.102.80.0/23 | 512 | RIPE NCC | FI | 8th Mar 1991 |
| 192.112.204.0/24 | 256 | RIPE NCC | FI | 17th Sept 1991 |
| 192.126.2.0/23 | 512 | RIPE NCC | FI | 17th Sept 1991 |
| 192.126.4.0/22 | 1k | RIPE NCC | FI | 17th Sept 1991 |
| 192.126.8.0/21 | 2k | RIPE NCC | FI | 17th Sept 1991 |
| 192.131.96.0/24 | 256 | RIPE NCC | FI | 30th Oct 1991 |
| 192.136.100.0/23 | 512 | RIPE NCC | FI | 16th Sept 2004 |
| 192.136.102.0/24 | 256 | RIPE NCC | FI | 16th Sept 2004 |
| 192.136.71.0/24 | 256 | RIPE NCC | FI | 16th Sept 2004 |
| 192.136.80.0/20 | 4.1k | RIPE NCC | FI | 16th Sept 2004 |
| 192.136.96.0/22 | 1k | RIPE NCC | FI | 16th Sept 2004 |
| 192.146.152.0/24 | 256 | RIPE NCC | FI | 13th May 1992 |