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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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
25,269 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 92.242.188.0/22 | 1k | RIPE NCC |  DE | 11th Oct 2018 |
| 92.243.74.0/23 | 512 | RIPE NCC |  SG | 15th Jan 2008 |
| 92.243.80.0/24 | 256 | RIPE NCC |  HR | 15th Jan 2008 |
| 92.243.81.0/24 | 256 | RIPE NCC |  PT | 15th Jan 2008 |
| 92.245.160.0/22 | 1k | RIPE NCC |  IT | 18th Feb 2008 |
| 92.246.132.0/22 | 1k | RIPE NCC |  AM | 22nd Apr 2008 |
| 92.249.5.0/24 | 256 | RIPE NCC |  GI | 4th May 2020 |
| 92.250.128.0/17 | 32.8k | RIPE NCC |  LU | 21st Nov 2007 |
| 92.255.11.0/24 | 256 | RIPE NCC |  RU | 24th Dec 2007 |
| 92.255.18.0/23 | 512 | RIPE NCC | RU | 24th Dec 2007 |
| 92.255.20.0/24 | 256 | RIPE NCC | RU | 24th Dec 2007 |
| 92.255.21.0/24 | 256 | RIPE NCC | RU | 24th Dec 2007 |
| 92.255.22.0/24 | 256 | RIPE NCC | RU | 24th Dec 2007 |
| 92.255.23.0/24 | 256 | RIPE NCC | RU | 24th Dec 2007 |
| 92.255.30.0/24 | 256 | RIPE NCC | RU | 24th Dec 2007 |
| 92.255.57.0/24 | 256 | RIPE NCC |  HK | 24th Dec 2007 |
| 92.255.61.0/24 | 256 | RIPE NCC | RU | 24th Dec 2007 |
| 92.255.72.0/24 | 256 | RIPE NCC | RU | 24th Dec 2007 |
| 92.255.85.0/24 | 256 | RIPE NCC | HK | 24th Dec 2007 |
| 92.255.9.0/24 | 256 | RIPE NCC | RU | 24th Dec 2007 |
| 92.42.103.0/24 | 256 | RIPE NCC |  QA | 12th Jan 2024 |
| 92.42.152.0/21 | 2k | RIPE NCC |  SE | 17th Dec 2007 |
| 92.42.168.0/21 | 2k | RIPE NCC |  GB | 18th Dec 2007 |
| 92.42.204.0/24 | 256 | RIPE NCC |  TR | 30th Jul 2025 |
| 92.42.224.0/21 | 2k | RIPE NCC | DE | 24th Dec 2007 |
| 92.42.3.0/24 | 256 | RIPE NCC |  CH | 3rd May 2023 |
| 92.42.5.0/24 | 256 | RIPE NCC |  NL | 5th May 2023 |
| 92.43.16.0/21 | 2k | RIPE NCC | DE | 3rd Jan 2008 |
| 92.43.40.0/21 | 2k | RIPE NCC | GB | 4th Jan 2008 |
| 92.53.160.0/24 | 256 | RIPE NCC | TR | 15th Feb 2008 |
| 92.53.164.0/22 | 1k | RIPE NCC |  SI | 15th Feb 2008 |
| 92.53.168.0/21 | 2k | RIPE NCC | SI | 15th Feb 2008 |
| 92.6.0.0/15 | 131k | RIPE NCC | SE | 28th Jun 2007 |
| 92.60.56.0/21 | 2k | RIPE NCC |  SK | 30th Nov 2007 |
| 92.61.144.0/20 | 4.1k | RIPE NCC | SE | 21st Dec 2007 |
| 93.113.108.0/24 | 256 | RIPE NCC | TR | 21st Dec 2007 |
| 93.113.128.0/24 | 256 | RIPE NCC | DE | 21st Dec 2007 |
| 93.113.129.0/24 | 256 | RIPE NCC |  IM | 21st Dec 2007 |
| 93.113.134.0/23 | 512 | RIPE NCC |  RO | 21st Dec 2007 |
| 93.113.152.0/23 | 512 | RIPE NCC | RO | 21st Dec 2007 |
| 93.113.16.0/21 | 2k | RIPE NCC |  ES | 21st Dec 2007 |
| 93.113.168.0/23 | 512 | RIPE NCC | RO | 21st Dec 2007 |
| 93.113.170.0/24 | 256 | RIPE NCC | LU | 21st Dec 2007 |
| 93.113.172.0/23 | 512 | RIPE NCC | RO | 21st Dec 2007 |
| 93.113.213.0/24 | 256 | RIPE NCC | NL | 21st Dec 2007 |
| 93.113.222.0/23 | 512 | RIPE NCC | RO | 21st Dec 2007 |
| 93.113.244.0/22 | 1k | RIPE NCC |  MD | 21st Dec 2007 |
| 93.113.248.0/23 | 512 | RIPE NCC | RO | 21st Dec 2007 |
| 93.113.46.0/24 | 256 | RIPE NCC | IT | 21st Dec 2007 |
| 93.113.80.0/21 | 2k | RIPE NCC | MD | 21st Dec 2007 |