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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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
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Countries with unannounced space registered through RIPE NCC, largest first.
Unannounced blocks in Netherlands
1,668 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 192.101.81.0/24 | 256 | RIPE NCC |  NL | 21st Jun 1991 |
| 192.101.82.0/24 | 256 | RIPE NCC | NL | 21st Jun 1991 |
| 192.101.83.0/24 | 256 | RIPE NCC | NL | 21st Jun 1991 |
| 192.101.88.0/24 | 256 | RIPE NCC | NL | 21st Jun 1991 |
| 192.101.90.0/24 | 256 | RIPE NCC | NL | 21st Jun 1991 |
| 192.104.142.0/24 | 256 | RIPE NCC | NL | 23rd May 1991 |
| 192.104.55.0/24 | 256 | RIPE NCC | NL | 30th Apr 1991 |
| 192.104.56.0/24 | 256 | RIPE NCC | NL | 30th Apr 1991 |
| 192.109.128.0/24 | 256 | RIPE NCC | NL | 1st Sept 1993 |
| 192.132.245.0/24 | 256 | RIPE NCC | NL | 19th Nov 1991 |
| 192.133.53.0/24 | 256 | RIPE NCC | NL | 7th Nov 1991 |
| 192.136.23.0/24 | 256 | RIPE NCC | NL | 19th Dec 1991 |
| 192.136.51.0/24 | 256 | RIPE NCC | NL | 30th Dec 1991 |
| 192.148.192.0/24 | 256 | RIPE NCC | NL | 2nd Mar 1992 |
| 192.148.200.0/24 | 256 | RIPE NCC | NL | 3rd Mar 1992 |
| 192.149.118.0/24 | 256 | RIPE NCC | NL | 10th Mar 1992 |
| 192.149.227.0/24 | 256 | RIPE NCC | NL | 23rd Mar 1992 |
| 192.152.49.0/24 | 256 | RIPE NCC | NL | 1st Sept 1993 |
| 192.152.50.0/24 | 256 | RIPE NCC | NL | 1st Sept 1993 |
| 192.152.51.0/24 | 256 | RIPE NCC | NL | 1st Sept 1993 |
| 192.159.105.0/24 | 256 | RIPE NCC | NL | 6th May 1992 |
| 192.16.183.0/24 | 256 | RIPE NCC | NL | 7th Nov 1986 |
| 192.16.187.0/24 | 256 | RIPE NCC | NL | 7th Nov 1986 |
| 192.16.193.0/24 | 256 | RIPE NCC | NL | 7th Nov 1986 |
| 192.16.198.0/24 | 256 | RIPE NCC | NL | 7th Nov 1986 |
| 192.160.106.0/24 | 256 | RIPE NCC | NL | 15th Apr 1993 |
| 192.160.152.0/24 | 256 | RIPE NCC | NL | 27th May 1992 |
| 192.189.73.0/24 | 256 | RIPE NCC | NL | 10th Jul 1992 |
| 192.195.183.0/24 | 256 | RIPE NCC | NL | 31st Jul 1992 |
| 192.207.31.0/24 | 256 | RIPE NCC | NL | 18th Aug 1992 |
| 192.26.154.0/23 | 512 | RIPE NCC | NL | 2nd Feb 1989 |
| 192.26.160.0/21 | 2k | RIPE NCC | NL | 2nd Feb 1989 |
| 192.26.172.0/23 | 512 | RIPE NCC | NL | 2nd Feb 1989 |
| 192.31.166.0/24 | 256 | RIPE NCC | NL | 7th Aug 1987 |
| 192.31.167.0/24 | 256 | RIPE NCC | NL | 7th Aug 1987 |
| 192.31.168.0/23 | 512 | RIPE NCC | NL | 7th Aug 1987 |
| 192.31.170.0/24 | 256 | RIPE NCC | NL | 7th Aug 1987 |
| 192.31.171.0/24 | 256 | RIPE NCC | NL | 7th Aug 1987 |
| 192.33.131.0/24 | 256 | RIPE NCC | NL | 2nd Dec 1987 |
| 192.33.233.0/24 | 256 | RIPE NCC | NL | 17th May 1990 |
| 192.34.116.0/24 | 256 | RIPE NCC | NL | 4th Mar 1994 |
| 192.35.130.0/24 | 256 | RIPE NCC | NL | 15th Apr 1993 |
| 192.35.131.0/24 | 256 | RIPE NCC | NL | 7th Apr 1988 |
| 192.35.132.0/24 | 256 | RIPE NCC | NL | 15th Apr 1993 |
| 192.35.183.0/24 | 256 | RIPE NCC | NL | 2nd May 1988 |
| 192.35.184.0/21 | 2k | RIPE NCC | NL | 2nd May 1988 |
| 192.35.192.0/24 | 256 | RIPE NCC | NL | 2nd May 1988 |
| 192.52.152.0/24 | 256 | RIPE NCC | NL | 20th Apr 1989 |
| 192.52.221.0/24 | 256 | RIPE NCC | NL | 10th May 1989 |
| 192.52.222.0/24 | 256 | RIPE NCC | NL | 10th May 1989 |