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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 |
|---|---|---|---|---|
| 185.0.33.0/24 | 256 | RIPE NCC |  DE | 16th Jun 2023 |
| 185.0.35.0/24 | 256 | RIPE NCC | DE | 13th Jul 2023 |
| 185.0.36.0/24 | 256 | RIPE NCC |  UZ | 4th Aug 2023 |
| 185.0.37.0/24 | 256 | RIPE NCC |  SA | 16th Aug 2023 |
| 185.0.38.0/24 | 256 | RIPE NCC |  SI | 31st Aug 2023 |
| 185.0.4.0/24 | 256 | RIPE NCC | DE | 8th Nov 2022 |
| 185.0.40.0/26 | 64 | RIPE NCC |  CH | 17th Jul 2025 |
| 185.0.41.0/24 | 256 | RIPE NCC |  GB | 26th Oct 2026 |
| 185.0.42.0/23 | 512 | RIPE NCC |  PL | 18th Aug 2025 |
| 185.0.44.0/22 | 1k | RIPE NCC |  RU | 2nd Jun 2026 |
| 185.0.48.0/22 | 1k | RIPE NCC |  UA | 29th Jul 2026 |
| 185.0.5.0/24 | 256 | RIPE NCC | DE | 8th Nov 2022 |
| 185.0.52.0/23 | 512 | RIPE NCC |  FR | 8th Sept 2026 |
| 185.0.6.0/24 | 256 | RIPE NCC | DE | 8th Nov 2022 |
| 185.0.7.0/24 | 256 | RIPE NCC | DE | 8th Nov 2022 |
| 185.0.8.0/24 | 256 | RIPE NCC | DE | 11th Nov 2022 |
| 185.0.9.0/24 | 256 | RIPE NCC |  IT | 23rd Nov 2022 |
| 185.1.0.0/24 | 256 | RIPE NCC | RU | 3rd Oct 2012 |
| 185.1.1.0/24 | 256 | RIPE NCC |  PS | 17th Oct 2012 |
| 185.1.10.0/23 | 512 | RIPE NCC | PL | 3rd Apr 2013 |
| 185.1.100.0/24 | 256 | RIPE NCC |  AL | 31st Oct 2017 |
| 185.1.101.0/24 | 256 | RIPE NCC | GB | 2nd Nov 2017 |
| 185.1.102.0/24 | 256 | RIPE NCC | DE | 14th Nov 2017 |
| 185.1.103.0/24 | 256 | RIPE NCC |  RO | 15th Nov 2017 |
| 185.1.104.0/24 | 256 | RIPE NCC | GB | 17th Nov 2017 |
| 185.1.105.0/24 | 256 | RIPE NCC | CH | 22nd Nov 2017 |
| 185.1.106.0/24 | 256 | RIPE NCC | IT | 29th Nov 2017 |
| 185.1.107.0/24 | 256 | RIPE NCC |  SE | 4th Dec 2017 |
| 185.1.108.0/24 | 256 | RIPE NCC |  LB | 4th Dec 2017 |
| 185.1.109.0/24 | 256 | RIPE NCC |  IE | 6th Dec 2017 |
| 185.1.110.0/24 | 256 | RIPE NCC |  KG | 11th Dec 2017 |
| 185.1.111.0/24 | 256 | RIPE NCC | UA | 15th Dec 2017 |
| 185.1.112.0/24 | 256 | RIPE NCC |  NL | 30th Jan 2018 |
| 185.1.113.0/24 | 256 | RIPE NCC |  LT | 31st Jan 2018 |
| 185.1.114.0/24 | 256 | RIPE NCC | IT | 9th Feb 2018 |
| 185.1.115.0/24 | 256 | RIPE NCC | IT | 9th Feb 2018 |
| 185.1.116.0/24 | 256 | RIPE NCC |  PT | 13th Apr 2018 |
| 185.1.117.0/24 | 256 | RIPE NCC | RU | 14th May 2018 |
| 185.1.118.0/24 | 256 | RIPE NCC | RU | 25th May 2018 |
| 185.1.119.0/24 | 256 | RIPE NCC | DE | 12th Feb 2021 |
| 185.1.12.0/24 | 256 | RIPE NCC |  NO | 11th Apr 2013 |
| 185.1.120.0/24 | 256 | RIPE NCC | PL | 15th Jan 2020 |
| 185.1.121.0/24 | 256 | RIPE NCC |  MK | 9th Jul 2018 |
| 185.1.122.0/24 | 256 | RIPE NCC | NL | 1st Oct 2018 |
| 185.1.123.0/24 | 256 | RIPE NCC |  GR | 30th Oct 2018 |
| 185.1.124.0/24 | 256 | RIPE NCC | IT | 13th Nov 2018 |
| 185.1.125.0/24 | 256 | RIPE NCC | DE | 18th Dec 2018 |
| 185.1.126.0/24 | 256 | RIPE NCC | SA | 6th Feb 2019 |
| 185.1.127.0/24 | 256 | RIPE NCC |  BE | 6th Feb 2019 |
| 185.1.128.0/24 | 256 | RIPE NCC | RO | 12th Feb 2019 |