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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 |
|---|---|---|---|---|
| 78.108.112.0/24 | 256 | RIPE NCC |  DE | 23rd Jun 2026 |
| 78.108.113.0/24 | 256 | RIPE NCC |  CZ | 23rd Jun 2026 |
| 78.108.114.0/24 | 256 | RIPE NCC |  GB | 23rd Jun 2026 |
| 78.108.116.0/24 | 256 | RIPE NCC |  TR | 23rd Jun 2026 |
| 78.108.117.0/24 | 256 | RIPE NCC |  PL | 23rd Jun 2026 |
| 78.108.120.0/24 | 256 | RIPE NCC |  SE | 23rd Jun 2026 |
| 78.108.122.0/24 | 256 | RIPE NCC |  RO | 23rd Jun 2026 |
| 78.108.125.0/24 | 256 | RIPE NCC |  DK | 26th Jun 2026 |
| 78.108.126.0/24 | 256 | RIPE NCC | RO | 26th Jun 2026 |
| 78.108.127.0/24 | 256 | RIPE NCC | CZ | 26th Jun 2026 |
| 78.108.144.0/21 | 2k | RIPE NCC | CZ | 22nd Jun 2007 |
| 78.110.32.0/23 | 512 | RIPE NCC |  EE | 2nd Aug 2007 |
| 78.110.34.0/24 | 256 | RIPE NCC | EE | 2nd Aug 2007 |
| 78.111.84.0/22 | 1k | RIPE NCC |  NL | 6th Sept 2007 |
| 78.111.96.0/24 | 256 | RIPE NCC | DE | 10th Sept 2007 |
| 78.128.100.0/22 | 1k | RIPE NCC |  BG | 5th Apr 2007 |
| 78.128.116.0/23 | 512 | RIPE NCC | BG | 5th Apr 2007 |
| 78.128.16.0/20 | 4.1k | RIPE NCC | BG | 5th Apr 2007 |
| 78.128.88.0/22 | 1k | RIPE NCC | BG | 5th Apr 2007 |
| 78.135.100.0/23 | 512 | RIPE NCC | TR | 28th Jun 2007 |
| 78.135.117.0/24 | 256 | RIPE NCC | TR | 28th Jun 2007 |
| 78.135.118.0/23 | 512 | RIPE NCC | TR | 28th Jun 2007 |
| 78.135.120.0/21 | 2k | RIPE NCC | TR | 28th Jun 2007 |
| 78.135.78.0/24 | 256 | RIPE NCC | TR | 28th Jun 2007 |
| 78.138.108.0/22 | 1k | RIPE NCC | DE | 11th Jun 2007 |
| 78.138.36.0/22 | 1k | RIPE NCC |  IL | 7th Jun 2007 |
| 78.138.4.0/22 | 1k | RIPE NCC | IL | 7th Jun 2007 |
| 78.142.10.0/23 | 512 | RIPE NCC | BG | 30th Jul 2007 |
| 78.143.252.0/23 | 512 | RIPE NCC | GB | 22nd Aug 2007 |
| 78.153.96.0/19 | 8.2k | RIPE NCC | IL | 5th Oct 2009 |
| 78.159.148.0/24 | 256 | RIPE NCC |  FR | 18th Sept 2007 |
| 78.24.248.0/21 | 2k | RIPE NCC | FR | 2nd Sept 2010 |
| 78.24.56.0/21 | 2k | RIPE NCC |  RU | 28th Aug 2007 |
| 78.27.0.0/18 | 16.4k | RIPE NCC | NL | 5th Sept 2007 |
| 78.31.164.0/24 | 256 | RIPE NCC | DE | 10th Jun 2024 |
| 78.31.209.0/24 | 256 | RIPE NCC | PL | 10th Sept 2012 |
| 78.31.48.0/21 | 2k | RIPE NCC | NL | 26th Sept 2007 |
| 78.40.16.0/21 | 2k | RIPE NCC |  SA | 9th Jul 2007 |
| 78.40.40.0/21 | 2k | RIPE NCC | SE | 8th Apr 2009 |
| 78.40.96.0/21 | 2k | RIPE NCC |  BE | 13th Jul 2007 |
| 78.41.138.0/24 | 256 | RIPE NCC |  KW | 12th Jan 2024 |
| 78.41.140.0/24 | 256 | RIPE NCC | GB | 12th Jan 2024 |
| 78.41.142.0/24 | 256 | RIPE NCC | RU | 12th Jan 2024 |
| 78.41.143.0/24 | 256 | RIPE NCC | GB | 12th Jan 2024 |
| 78.41.200.0/24 | 256 | RIPE NCC | NL | 23rd Aug 2007 |
| 78.41.201.0/24 | 256 | RIPE NCC | NL | 23rd Aug 2007 |
| 78.41.202.0/24 | 256 | RIPE NCC | NL | 23rd Aug 2007 |
| 78.41.203.0/24 | 256 | RIPE NCC | NL | 23rd Aug 2007 |
| 78.41.204.0/23 | 512 | RIPE NCC | NL | 23rd Aug 2007 |
| 78.41.206.0/24 | 256 | RIPE NCC | NL | 23rd Aug 2007 |