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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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
84,783 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 89.38.56.0/24 | 256 | RIPE NCC |  TR | 29th Nov 2005 |
| 89.38.64.0/22 | 1k | RIPE NCC |  MD | 29th Nov 2005 |
| 89.38.71.0/24 | 256 | RIPE NCC | TR | 29th Nov 2005 |
| 89.38.76.0/22 | 1k | RIPE NCC | MD | 29th Nov 2005 |
| 89.39.110.0/24 | 256 | RIPE NCC |  RO | 29th Nov 2005 |
| 89.39.112.0/21 | 2k | RIPE NCC | MD | 29th Nov 2005 |
| 89.39.147.0/24 | 256 | RIPE NCC |  US | 29th Nov 2005 |
| 89.39.151.0/24 | 256 | RIPE NCC | TR | 29th Nov 2005 |
| 89.39.174.0/23 | 512 | RIPE NCC | RO | 29th Nov 2005 |
| 89.39.188.0/24 | 256 | RIPE NCC | RO | 29th Nov 2005 |
| 89.39.213.0/24 | 256 | RIPE NCC | RO | 29th Nov 2005 |
| 89.39.252.0/24 | 256 | RIPE NCC | RO | 29th Nov 2005 |
| 89.39.66.0/24 | 256 | RIPE NCC | RO | 29th Nov 2005 |
| 89.39.71.0/24 | 256 | RIPE NCC | RO | 29th Nov 2005 |
| 89.39.76.0/22 | 1k | RIPE NCC | MD | 29th Nov 2005 |
| 89.39.81.0/24 | 256 | RIPE NCC | RO | 29th Nov 2005 |
| 89.39.84.0/22 | 1k | RIPE NCC | MD | 29th Nov 2005 |
| 89.40.110.0/23 | 512 | RIPE NCC |  IR | 29th Nov 2005 |
| 89.40.134.0/23 | 512 | RIPE NCC |  DE | 29th Nov 2005 |
| 89.40.162.0/23 | 512 | RIPE NCC | RO | 29th Nov 2005 |
| 89.40.170.0/24 | 256 | RIPE NCC |  IL | 29th Nov 2005 |
| 89.40.171.0/24 | 256 | RIPE NCC |  IM | 29th Nov 2005 |
| 89.40.200.0/24 | 256 | RIPE NCC | RO | 29th Nov 2005 |
| 89.40.204.0/24 | 256 | RIPE NCC |  RU | 29th Nov 2005 |
| 89.40.21.0/24 | 256 | RIPE NCC |  PL | 29th Nov 2005 |
| 89.40.211.0/24 | 256 | RIPE NCC |  NL | 29th Nov 2005 |
| 89.40.228.0/22 | 1k | RIPE NCC | MD | 29th Nov 2005 |
| 89.40.37.0/24 | 256 | RIPE NCC | IL | 29th Nov 2005 |
| 89.40.38.0/23 | 512 | RIPE NCC | IR | 29th Nov 2005 |
| 89.40.65.0/24 | 256 | RIPE NCC | IR | 29th Nov 2005 |
| 89.40.69.0/24 | 256 | RIPE NCC | NL | 29th Nov 2005 |
| 89.40.88.0/23 | 512 | RIPE NCC | RO | 29th Nov 2005 |
| 89.41.0.0/21 | 2k | RIPE NCC |  AZ | 29th Nov 2005 |
| 89.41.144.0/21 | 2k | RIPE NCC | RO | 29th Nov 2005 |
| 89.41.152.0/21 | 2k | RIPE NCC |  ES | 29th Nov 2005 |
| 89.41.224.0/20 | 4.1k | ARIN | US | 21st Jun 2021 |
| 89.41.25.0/24 | 256 | RIPE NCC | RO | 29th Nov 2005 |
| 89.41.27.0/24 | 256 | RIPE NCC |  GB | 29th Nov 2005 |
| 89.41.58.0/23 | 512 | RIPE NCC | IR | 29th Nov 2005 |
| 89.42.104.0/22 | 1k | RIPE NCC | MD | 29th Nov 2005 |
| 89.42.120.0/21 | 2k | RIPE NCC | ES | 29th Nov 2005 |
| 89.42.128.0/22 | 1k | RIPE NCC | MD | 29th Nov 2005 |
| 89.42.154.0/24 | 256 | RIPE NCC | GB | 29th Nov 2005 |
| 89.42.155.0/24 | 256 | RIPE NCC | GB | 29th Nov 2005 |
| 89.42.156.0/23 | 512 | RIPE NCC | RO | 29th Nov 2005 |
| 89.42.158.0/23 | 512 | RIPE NCC |  AT | 29th Nov 2005 |
| 89.42.162.0/24 | 256 | RIPE NCC | PL | 29th Nov 2005 |
| 89.42.180.0/22 | 1k | RIPE NCC | MD | 29th Nov 2005 |
| 89.42.224.0/22 | 1k | RIPE NCC | MD | 29th Nov 2005 |
| 89.42.240.0/21 | 2k | RIPE NCC | RO | 29th Nov 2005 |