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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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
84,619 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 62.233.63.0/24 | 256 | RIPE NCC |  IT | 14th Oct 2021 |
| 62.244.117.0/24 | 256 | RIPE NCC |  FR | 16th Sept 2002 |
| 62.3.128.0/19 | 8.2k | RIPE NCC |  SE | 5th Oct 2000 |
| 62.3.21.0/24 | 256 | RIPE NCC | IT | 8th Nov 2021 |
| 62.3.36.0/24 | 256 | RIPE NCC |  DE | 9th Nov 2021 |
| 62.3.39.0/24 | 256 | RIPE NCC |  BG | 9th Nov 2021 |
| 62.3.40.0/24 | 256 | RIPE NCC | DE | 9th Nov 2021 |
| 62.3.45.0/24 | 256 | RIPE NCC | DE | 9th Nov 2021 |
| 62.3.54.0/24 | 256 | RIPE NCC |  IE | 9th Nov 2021 |
| 62.3.63.0/24 | 256 | RIPE NCC |  RU | 9th Nov 2021 |
| 62.32.33.0/24 | 256 | RIPE NCC |  US | 12th May 2000 |
| 62.32.36.0/22 | 1k | RIPE NCC |  NL | 12th May 2000 |
| 62.32.48.0/20 | 4.1k | RIPE NCC | NL | 12th May 2000 |
| 62.4.104.0/22 | 1k | RIPE NCC |  CZ | 11th Jun 2001 |
| 62.41.32.0/24 | 256 | RIPE NCC | US | 10th May 2000 |
| 62.41.37.0/24 | 256 | RIPE NCC | US | 10th May 2000 |
| 62.51.0.0/16 | 65.5k | RIPE NCC | US | 10th Mar 2005 |
| 62.62.0.0/17 | 32.8k | RIPE NCC |  LU | 6th Jul 2000 |
| 62.64.32.0/19 | 8.2k | RIPE NCC | FR | 19th Aug 2008 |
| 62.68.76.0/24 | 256 | RIPE NCC | NL | 25th Jan 2022 |
| 62.68.87.0/24 | 256 | RIPE NCC |  SC | 25th Jan 2022 |
| 62.69.144.0/21 | 2k | RIPE NCC | DE | 13th Aug 2012 |
| 62.69.160.0/19 | 8.2k | RIPE NCC |  FI | 28th Jan 2002 |
| 62.69.192.0/18 | 16.4k | RIPE NCC |  PL | 27th Oct 2003 |
| 62.75.134.0/24 | 256 | RIPE NCC | DE | 27th Jul 2001 |
| 62.75.137.0/24 | 256 | RIPE NCC | DE | 27th Jul 2001 |
| 62.75.138.0/23 | 512 | RIPE NCC | DE | 27th Jul 2001 |
| 62.75.140.0/24 | 256 | RIPE NCC | DE | 27th Jul 2001 |
| 62.75.141.0/24 | 256 | RIPE NCC | DE | 27th Jul 2001 |
| 62.75.142.0/23 | 512 | RIPE NCC | DE | 27th Jul 2001 |
| 62.75.144.0/21 | 2k | RIPE NCC | DE | 27th Jul 2001 |
| 62.75.152.0/24 | 256 | RIPE NCC | DE | 27th Jul 2001 |
| 62.75.154.0/24 | 256 | RIPE NCC | DE | 27th Jul 2001 |
| 62.75.155.0/24 | 256 | RIPE NCC | DE | 27th Jul 2001 |
| 62.75.156.0/22 | 1k | RIPE NCC | DE | 27th Jul 2001 |
| 62.75.160.0/22 | 1k | RIPE NCC | DE | 27th Jul 2001 |
| 62.75.164.0/23 | 512 | RIPE NCC | DE | 27th Jul 2001 |
| 62.75.166.0/24 | 256 | RIPE NCC | DE | 27th Jul 2001 |
| 62.75.168.0/22 | 1k | RIPE NCC | DE | 27th Jul 2001 |
| 62.75.173.0/24 | 256 | RIPE NCC | DE | 27th Jul 2001 |
| 62.75.175.0/24 | 256 | RIPE NCC | DE | 27th Jul 2001 |
| 62.75.177.0/24 | 256 | RIPE NCC | DE | 27th Jul 2001 |
| 62.75.178.0/24 | 256 | RIPE NCC | DE | 27th Jul 2001 |
| 62.75.184.0/21 | 2k | RIPE NCC | DE | 27th Jul 2001 |
| 62.75.192.0/23 | 512 | RIPE NCC | DE | 27th Jul 2001 |
| 62.75.199.0/24 | 256 | RIPE NCC | DE | 27th Jul 2001 |
| 62.75.200.0/24 | 256 | RIPE NCC | DE | 27th Jul 2001 |
| 62.75.205.0/24 | 256 | RIPE NCC | DE | 27th Jul 2001 |
| 62.75.208.0/22 | 1k | RIPE NCC | DE | 27th Jul 2001 |
| 62.75.225.0/24 | 256 | RIPE NCC | DE | 27th Jul 2001 |