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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 unannounced space registered through RIPE NCC, largest first.
Unannounced blocks registered through RIPE NCC
24,902 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 87.120.164.0/24 | 256 | RIPE NCC |  LU | 12th Jul 2005 |
| 87.120.168.0/21 | 2k | RIPE NCC |  SA | 12th Jul 2005 |
| 87.120.88.0/23 | 512 | RIPE NCC |  BG | 12th Jul 2005 |
| 87.121.144.0/23 | 512 | RIPE NCC | BG | 12th Jul 2005 |
| 87.121.146.0/23 | 512 | RIPE NCC | BG | 12th Jul 2005 |
| 87.121.176.0/20 | 4.1k | RIPE NCC | SA | 12th Jul 2005 |
| 87.121.222.0/24 | 256 | RIPE NCC |  GB | 12th Jul 2005 |
| 87.121.223.0/24 | 256 | RIPE NCC | BG | 12th Jul 2005 |
| 87.121.240.0/21 | 2k | RIPE NCC | SA | 12th Jul 2005 |
| 87.121.28.0/22 | 1k | RIPE NCC |  DE | 12th Jul 2005 |
| 87.121.98.0/24 | 256 | RIPE NCC | BG | 12th Jul 2005 |
| 87.192.0.0/19 | 8.2k | RIPE NCC |  US | 3rd Jun 2005 |
| 87.192.222.0/23 | 512 | RIPE NCC |  IE | 3rd Jun 2005 |
| 87.192.82.0/23 | 512 | RIPE NCC | IE | 3rd Jun 2005 |
| 87.199.108.0/22 | 1k | RIPE NCC |  PL | 28th Jun 2006 |
| 87.199.126.0/24 | 256 | RIPE NCC | DE | 28th Jun 2006 |
| 87.199.132.0/24 | 256 | RIPE NCC |  KZ | 28th Jun 2006 |
| 87.199.136.0/22 | 1k | RIPE NCC |  IL | 28th Jun 2006 |
| 87.199.142.0/23 | 512 | RIPE NCC | PL | 28th Jun 2006 |
| 87.199.148.0/22 | 1k | RIPE NCC | DE | 28th Jun 2006 |
| 87.199.156.0/22 | 1k | RIPE NCC | PL | 28th Jun 2006 |
| 87.199.96.0/21 | 2k | RIPE NCC | DE | 28th Jun 2006 |
| 87.230.32.0/22 | 1k | RIPE NCC | DE | 25th Jul 2005 |
| 87.230.48.0/23 | 512 | RIPE NCC | DE | 25th Jul 2005 |
| 87.230.64.0/24 | 256 | RIPE NCC | DE | 25th Jul 2005 |
| 87.230.65.0/24 | 256 | RIPE NCC | DE | 25th Jul 2005 |
| 87.230.66.0/23 | 512 | RIPE NCC | DE | 25th Jul 2005 |
| 87.230.68.0/22 | 1k | RIPE NCC | DE | 25th Jul 2005 |
| 87.230.76.0/22 | 1k | RIPE NCC | DE | 25th Jul 2005 |
| 87.230.80.0/23 | 512 | RIPE NCC | DE | 25th Jul 2005 |
| 87.232.192.0/24 | 256 | RIPE NCC | IE | 1st Jul 2005 |
| 87.232.194.0/23 | 512 | RIPE NCC | IE | 1st Jul 2005 |
| 87.232.196.0/22 | 1k | RIPE NCC | IE | 1st Jul 2005 |
| 87.236.163.0/24 | 256 | RIPE NCC |  NL | 19th Aug 2021 |
| 87.236.165.0/24 | 256 | RIPE NCC | GB | 19th Aug 2021 |
| 87.236.178.0/23 | 512 | RIPE NCC |  CH | 31st Aug 2005 |
| 87.236.36.0/24 | 256 | RIPE NCC | PL | 8th Mar 2023 |
| 87.236.40.0/21 | 2k | RIPE NCC |  RU | 21st Jul 2005 |
| 87.236.87.0/24 | 256 | RIPE NCC | RU | 12th Aug 2005 |
| 87.237.165.0/24 | 256 | RIPE NCC | DE | 8th May 2020 |
| 87.237.48.0/22 | 1k | RIPE NCC | GB | 26th Jun 2018 |
| 87.237.88.0/21 | 2k | RIPE NCC | DE | 10th Nov 2005 |
| 87.238.227.0/24 | 256 | RIPE NCC |  BE | 24th Jan 2006 |
| 87.239.224.0/21 | 2k | RIPE NCC | CH | 30th Mar 2006 |
| 87.239.34.0/24 | 256 | RIPE NCC | RU | 22nd Sept 2009 |
| 87.239.48.0/22 | 1k | RIPE NCC |  AT | 21st Jun 2018 |
| 87.239.72.0/21 | 2k | RIPE NCC | PL | 24th Nov 2005 |
| 87.242.66.0/24 | 256 | RIPE NCC | RU | 22nd Jul 2005 |
| 87.243.16.0/20 | 4.1k | RIPE NCC | KZ | 8th Jul 2010 |
| 87.243.64.0/20 | 4.1k | RIPE NCC | BG | 27th Jul 2006 |