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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 |
|---|---|---|---|---|
| 194.169.124.0/24 | 256 | RIPE NCC |  NL | 1st Sept 1995 |
| 194.180.104.0/22 | 1k | RIPE NCC | NL | 31st May 2018 |
| 194.180.227.0/24 | 256 | RIPE NCC | NL | 22nd Nov 2019 |
| 194.242.18.0/23 | 512 | RIPE NCC | NL | 3rd Sept 2009 |
| 194.242.38.0/24 | 256 | RIPE NCC | NL | 22nd Nov 2019 |
| 194.246.39.224/27 | 32 | RIPE NCC | NL | 31st Aug 2004 |
| 194.246.39.64/26 | 64 | RIPE NCC | NL | 13th Jan 2026 |
| 194.253.0.0/16 | 65.5k | RIPE NCC | NL | 8th Mar 1996 |
| 194.26.156.0/23 | 512 | RIPE NCC | NL | 28th Apr 1995 |
| 194.26.160.0/22 | 1k | RIPE NCC | NL | 13th Sept 1995 |
| 194.26.168.0/22 | 1k | RIPE NCC | NL | 24th Jul 2018 |
| 194.28.44.0/24 | 256 | RIPE NCC | NL | 29th May 2019 |
| 194.29.102.0/23 | 512 | RIPE NCC | NL | 18th Oct 1999 |
| 194.29.104.0/21 | 2k | RIPE NCC | NL | 18th Oct 1999 |
| 194.29.112.0/23 | 512 | RIPE NCC | NL | 18th Oct 1999 |
| 194.29.115.0/24 | 256 | RIPE NCC | NL | 18th Oct 1999 |
| 194.29.116.0/23 | 512 | RIPE NCC | NL | 18th Oct 1999 |
| 194.29.121.0/24 | 256 | RIPE NCC | NL | 18th Oct 1999 |
| 194.29.122.0/23 | 512 | RIPE NCC | NL | 18th Oct 1999 |
| 194.29.124.0/22 | 1k | RIPE NCC | NL | 18th Oct 1999 |
| 194.29.53.0/24 | 256 | RIPE NCC | NL | 13th Jul 2021 |
| 194.29.66.0/24 | 256 | RIPE NCC | NL | 18th Oct 1999 |
| 194.29.72.0/24 | 256 | RIPE NCC | NL | 18th Oct 1999 |
| 194.29.76.0/23 | 512 | RIPE NCC | NL | 18th Oct 1999 |
| 194.29.81.0/24 | 256 | RIPE NCC | NL | 18th Oct 1999 |
| 194.29.82.0/23 | 512 | RIPE NCC | NL | 18th Oct 1999 |
| 194.29.84.0/22 | 1k | RIPE NCC | NL | 18th Oct 1999 |
| 194.29.88.0/21 | 2k | RIPE NCC | NL | 18th Oct 1999 |
| 194.29.96.0/24 | 256 | RIPE NCC | NL | 18th Oct 1999 |
| 194.30.175.0/24 | 256 | RIPE NCC | NL | 25th Apr 2005 |
| 194.30.188.0/24 | 256 | RIPE NCC | NL | 28th Apr 2005 |
| 194.33.144.0/22 | 1k | RIPE NCC | NL | 12th May 1995 |
| 194.33.148.0/24 | 256 | RIPE NCC | NL | 12th May 1995 |
| 194.34.108.0/22 | 1k | RIPE NCC | NL | 19th Sept 2018 |
| 194.34.16.0/20 | 4.1k | RIPE NCC | NL | 12th May 1995 |
| 194.34.165.0/24 | 256 | RIPE NCC | NL | 28th Jul 2025 |
| 194.34.32.0/22 | 1k | RIPE NCC | NL | 12th May 1995 |
| 194.34.36.0/22 | 1k | RIPE NCC | NL | 8th Feb 1994 |
| 194.34.40.0/21 | 2k | RIPE NCC | NL | 8th Feb 1994 |
| 194.34.48.0/21 | 2k | RIPE NCC | NL | 8th Feb 1994 |
| 194.36.189.0/24 | 256 | RIPE NCC | NL | 20th Sept 2018 |
| 194.37.68.0/22 | 1k | RIPE NCC | NL | 14th Feb 1994 |
| 194.39.250.0/24 | 256 | RIPE NCC | NL | 23rd Jul 2024 |
| 194.42.163.0/24 | 256 | RIPE NCC | NL | 13th Feb 1998 |
| 194.42.164.0/22 | 1k | RIPE NCC | NL | 13th Feb 1998 |
| 194.42.168.0/21 | 2k | RIPE NCC | NL | 13th Feb 1998 |
| 194.42.49.0/24 | 256 | RIPE NCC | NL | 18th May 2004 |
| 194.45.168.0/24 | 256 | RIPE NCC | NL | 28th Feb 1994 |
| 194.49.32.0/21 | 2k | RIPE NCC | NL | 25th Mar 1994 |
| 194.50.3.0/24 | 256 | RIPE NCC | NL | 21st Nov 2019 |