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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 Netherlands
1,704 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 157.228.192.0/18 | 16.4k | RIPE NCC |  NL | 7th Apr 2004 |
| 161.104.76.0/23 | 512 | RIPE NCC | NL | 24th Jun 1992 |
| 161.158.0.0/16 | 65.5k | RIPE NCC | NL | 1st Sept 1993 |
| 161.83.0.0/16 | 65.5k | RIPE NCC | NL | 23rd Jun 1992 |
| 161.84.0.0/15 | 131k | RIPE NCC | NL | 23rd Jun 1992 |
| 161.86.0.0/15 | 131k | RIPE NCC | NL | 23rd Jun 1992 |
| 161.88.0.0/16 | 65.5k | RIPE NCC | NL | 23rd Jun 1992 |
| 161.90.0.0/16 | 65.5k | RIPE NCC | NL | 23rd Jun 1992 |
| 161.91.0.0/16 | 65.5k | RIPE NCC | NL | 23rd Jun 1992 |
| 161.92.0.0/16 | 65.5k | RIPE NCC | NL | 23rd Jun 1992 |
| 162.218.56.0/21 | 2k | RIPE NCC | NL | 1st Aug 2013 |
| 163.175.0.0/16 | 65.5k | RIPE NCC | NL | 26th Oct 1992 |
| 165.114.0.0/16 | 65.5k | RIPE NCC | NL | 22nd Aug 2007 |
| 167.81.0.0/16 | 65.5k | RIPE NCC | NL | 12th May 1993 |
| 170.246.64.0/22 | 1k | RIPE NCC | NL | 10th Feb 2017 |
| 171.25.179.0/24 | 256 | RIPE NCC | NL | 12th Jan 2012 |
| 171.33.224.0/21 | 2k | RIPE NCC | NL | 3rd Jul 2012 |
| 173.209.0.0/19 | 8.2k | RIPE NCC | NL | 18th Sept 2009 |
| 176.118.194.0/24 | 256 | RIPE NCC | NL | 7th Jul 2020 |
| 176.119.211.0/24 | 256 | RIPE NCC | NL | 6th Jan 2020 |
| 176.22.128.0/19 | 8.2k | RIPE NCC | NL | 19th May 2011 |
| 176.223.163.0/24 | 256 | RIPE NCC | NL | 29th Nov 2011 |
| 178.212.88.0/24 | 256 | RIPE NCC | NL | 28th Jul 2010 |
| 178.216.240.0/22 | 1k | RIPE NCC | NL | 29th May 2019 |
| 178.248.168.0/21 | 2k | RIPE NCC | NL | 10th May 2010 |
| 178.255.223.0/24 | 256 | RIPE NCC | NL | 7th Sept 2021 |
| 185.0.10.0/24 | 256 | RIPE NCC | NL | 29th Nov 2022 |
| 185.0.11.0/24 | 256 | RIPE NCC | NL | 13th Dec 2022 |
| 185.0.27.0/24 | 256 | RIPE NCC | NL | 18th Feb 2025 |
| 185.1.112.0/24 | 256 | RIPE NCC | NL | 30th Jan 2018 |
| 185.1.122.0/24 | 256 | RIPE NCC | NL | 1st Oct 2018 |
| 185.1.160.0/23 | 512 | RIPE NCC | NL | 12th Mar 2025 |
| 185.1.184.0/23 | 512 | RIPE NCC | NL | 23rd Jan 2026 |
| 185.1.190.0/24 | 256 | RIPE NCC | NL | 18th Sept 2020 |
| 185.1.222.0/23 | 512 | RIPE NCC | NL | 26th Oct 2021 |
| 185.1.240.0/24 | 256 | RIPE NCC | NL | 8th Apr 2022 |
| 185.1.32.0/24 | 256 | RIPE NCC | NL | 5th Nov 2014 |
| 185.1.94.0/24 | 256 | RIPE NCC | NL | 4th Jul 2017 |
| 185.101.244.0/22 | 1k | RIPE NCC | NL | 27th May 2015 |
| 185.102.4.0/22 | 1k | RIPE NCC | NL | 27th May 2015 |
| 185.105.76.0/22 | 1k | RIPE NCC | NL | 19th Jun 2015 |
| 185.106.121.0/24 | 256 | RIPE NCC | NL | 26th Jun 2015 |
| 185.109.224.0/22 | 1k | RIPE NCC | NL | 17th Jul 2015 |
| 185.112.44.0/22 | 1k | RIPE NCC | NL | 4th Aug 2015 |
| 185.114.24.0/22 | 1k | RIPE NCC | NL | 20th Aug 2015 |
| 185.117.24.0/22 | 1k | RIPE NCC | NL | 11th Sept 2015 |
| 185.120.116.0/22 | 1k | RIPE NCC | NL | 8th Oct 2015 |
| 185.121.188.0/22 | 1k | RIPE NCC | NL | 15th Oct 2015 |
| 185.121.8.0/22 | 1k | RIPE NCC | NL | 12th Oct 2015 |
| 185.122.20.0/22 | 1k | RIPE NCC | NL | 19th Oct 2015 |