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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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
1,696 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 137.55.0.0/16 | 65.5k | RIPE NCC |  NL | 2nd Nov 1989 |
| 138.124.192.0/20 | 4.1k | RIPE NCC | NL | 1st Sept 1993 |
| 139.156.0.0/16 | 65.5k | RIPE NCC | NL | 1st Sept 1993 |
| 141.105.0.0/20 | 4.1k | RIPE NCC | NL | 24th Jun 2011 |
| 141.98.96.0/22 | 1k | RIPE NCC | NL | 11th Jan 2019 |
| 144.119.0.0/16 | 65.5k | RIPE NCC | NL | 3rd Dec 1990 |
| 144.2.172.0/22 | 1k | RIPE NCC | NL | 1st Sept 1993 |
| 144.54.0.0/16 | 65.5k | RIPE NCC | NL | 13th Nov 1990 |
| 145.11.128.0/17 | 32.8k | RIPE NCC | NL | 1st Sept 1993 |
| 145.112.0.0/14 | 262k | RIPE NCC | NL | 1st Sept 1993 |
| 145.131.48.0/20 | 4.1k | RIPE NCC | NL | 1st Sept 1993 |
| 145.134.0.0/15 | 131k | RIPE NCC | NL | 1st Sept 1993 |
| 145.16.0.0/16 | 65.5k | RIPE NCC | NL | 1st Sept 1993 |
| 145.26.0.0/16 | 65.5k | RIPE NCC | NL | 1st Sept 1993 |
| 145.27.0.0/16 | 65.5k | RIPE NCC | NL | 1st Sept 1993 |
| 145.40.0.0/20 | 4.1k | RIPE NCC | NL | 1st Sept 1993 |
| 145.42.0.0/16 | 65.5k | RIPE NCC | NL | 1st Sept 1993 |
| 145.47.0.0/16 | 65.5k | RIPE NCC | NL | 1st Sept 1993 |
| 145.54.0.0/16 | 65.5k | RIPE NCC | NL | 1st Sept 1993 |
| 145.63.160.0/19 | 8.2k | RIPE NCC | NL | 1st Sept 1993 |
| 145.63.208.0/20 | 4.1k | RIPE NCC | NL | 1st Sept 1993 |
| 145.63.224.0/19 | 8.2k | RIPE NCC | NL | 1st Sept 1993 |
| 145.65.0.0/16 | 65.5k | RIPE NCC | NL | 1st Sept 1993 |
| 145.67.0.0/16 | 65.5k | RIPE NCC | NL | 1st Sept 1993 |
| 145.70.0.0/16 | 65.5k | RIPE NCC | NL | 1st Sept 1993 |
| 145.71.0.0/16 | 65.5k | RIPE NCC | NL | 1st Sept 1993 |
| 145.73.0.0/16 | 65.5k | RIPE NCC | NL | 1st Sept 1993 |
| 145.80.0.0/16 | 65.5k | RIPE NCC | NL | 1st Sept 1993 |
| 145.87.128.0/18 | 16.4k | RIPE NCC | NL | 1st Sept 1993 |
| 145.87.192.0/19 | 8.2k | RIPE NCC | NL | 1st Sept 1993 |
| 146.106.0.0/16 | 65.5k | RIPE NCC | NL | 5th Feb 1991 |
| 146.19.192.0/24 | 256 | RIPE NCC | NL | 17th Nov 2021 |
| 146.19.231.0/24 | 256 | RIPE NCC | NL | 18th Nov 2021 |
| 146.88.19.0/24 | 256 | APNIC | NL | 28th Jan 1991 |
| 147.75.160.0/20 | 4.1k | RIPE NCC | NL | 11th Jul 1991 |
| 148.148.0.0/16 | 65.5k | RIPE NCC | NL | 1st Sept 1993 |
| 149.59.0.0/16 | 65.5k | RIPE NCC | NL | 28th Apr 1997 |
| 150.251.48.0/21 | 2k | RIPE NCC | NL | 19th Aug 1991 |
| 150.251.60.0/23 | 512 | RIPE NCC | NL | 19th Aug 1991 |
| 150.251.62.0/23 | 512 | RIPE NCC | NL | 19th Aug 1991 |
| 151.184.0.0/16 | 65.5k | RIPE NCC | NL | 17th Sept 1991 |
| 152.89.152.0/22 | 1k | RIPE NCC | NL | 25th Jan 2019 |
| 152.89.200.0/22 | 1k | RIPE NCC | NL | 28th Jan 2019 |
| 155.115.0.0/16 | 65.5k | RIPE NCC | NL | 23rd Mar 1992 |
| 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 |