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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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
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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 |
|---|---|---|---|---|
| 185.1.136.0/24 | 256 | RIPE NCC |  GB | 11th Mar 2020 |
| 185.1.137.0/24 | 256 | RIPE NCC |  BG | 5th Jun 2019 |
| 185.1.138.0/24 | 256 | RIPE NCC |  BE | 11th Jun 2019 |
| 185.1.139.0/24 | 256 | RIPE NCC |  IT | 18th Jul 2019 |
| 185.1.14.0/24 | 256 | RIPE NCC |  FR | 18th Mar 2025 |
| 185.1.141.0/24 | 256 | RIPE NCC | GB | 26th Aug 2019 |
| 185.1.142.0/24 | 256 | RIPE NCC |  SE | 5th Sept 2019 |
| 185.1.143.0/24 | 256 | RIPE NCC |  ES | 10th Sept 2019 |
| 185.1.144.0/24 | 256 | RIPE NCC | FR | 13th Jun 2022 |
| 185.1.145.0/24 | 256 | RIPE NCC |  PL | 25th Sept 2019 |
| 185.1.146.0/24 | 256 | RIPE NCC |  UA | 26th Sept 2019 |
| 185.1.147.0/24 | 256 | RIPE NCC |  CH | 23rd Feb 2022 |
| 185.1.149.0/24 | 256 | RIPE NCC | FR | 29th Oct 2019 |
| 185.1.15.0/24 | 256 | RIPE NCC |  AE | 15th Jul 2013 |
| 185.1.151.0/24 | 256 | RIPE NCC |  KG | 20th Nov 2019 |
| 185.1.154.0/24 | 256 | RIPE NCC | CH | 3rd Dec 2019 |
| 185.1.155.0/24 | 256 | RIPE NCC |  DE | 10th Dec 2019 |
| 185.1.156.0/24 | 256 | RIPE NCC | BG | 13th Dec 2019 |
| 185.1.157.0/24 | 256 | RIPE NCC | SE | 20th Dec 2019 |
| 185.1.158.0/24 | 256 | RIPE NCC |  TR | 24th Dec 2019 |
| 185.1.159.0/24 | 256 | RIPE NCC |  QA | 10th Feb 2020 |
| 185.1.16.0/24 | 256 | RIPE NCC | UA | 17th Jul 2013 |
| 185.1.160.0/23 | 512 | RIPE NCC |  NL | 12th Mar 2025 |
| 185.1.162.0/24 | 256 | RIPE NCC |  RU | 18th Feb 2020 |
| 185.1.163.0/24 | 256 | RIPE NCC | FR | 23rd Mar 2020 |
| 185.1.164.0/24 | 256 | RIPE NCC | PL | 27th Mar 2020 |
| 185.1.165.0/24 | 256 | RIPE NCC | RU | 15th Apr 2020 |
| 185.1.166.0/23 | 512 | RIPE NCC | DE | 23rd Apr 2020 |
| 185.1.169.0/24 | 256 | RIPE NCC | FR | 4th Jun 2020 |
| 185.1.17.0/24 | 256 | RIPE NCC | PL | 21st Aug 2013 |
| 185.1.170.0/23 | 512 | RIPE NCC | DE | 29th May 2020 |
| 185.1.172.0/24 | 256 | RIPE NCC |  GR | 4th Jun 2020 |
| 185.1.173.0/24 | 256 | RIPE NCC |  CZ | 9th Jun 2020 |
| 185.1.175.0/24 | 256 | RIPE NCC | DE | 23rd Jun 2020 |
| 185.1.176.0/24 | 256 | RIPE NCC | DE | 22nd May 2023 |
| 185.1.177.0/24 | 256 | RIPE NCC | FR | 1st Jul 2020 |
| 185.1.178.0/24 | 256 | RIPE NCC |  IM | 2nd Jul 2020 |
| 185.1.18.0/24 | 256 | RIPE NCC | DE | 12th Sept 2013 |
| 185.1.180.0/24 | 256 | RIPE NCC |  US | 6th Jul 2020 |
| 185.1.181.0/24 | 256 | RIPE NCC | SE | 22nd Jul 2020 |
| 185.1.182.0/24 | 256 | RIPE NCC | DE | 23rd Jul 2020 |
| 185.1.183.0/24 | 256 | RIPE NCC | DE | 23rd Jul 2020 |
| 185.1.184.0/23 | 512 | RIPE NCC | NL | 23rd Jan 2026 |
| 185.1.186.0/24 | 256 | RIPE NCC | IT | 24th Aug 2020 |
| 185.1.187.0/24 | 256 | RIPE NCC | DE | 25th Aug 2020 |
| 185.1.188.0/24 | 256 | RIPE NCC |  SA | 23rd Aug 2021 |
| 185.1.189.0/24 | 256 | RIPE NCC | DE | 11th Sept 2020 |
| 185.1.19.0/24 | 256 | RIPE NCC | RU | 11th Oct 2013 |
| 185.1.190.0/24 | 256 | RIPE NCC | NL | 18th Sept 2020 |
| 185.1.191.0/24 | 256 | RIPE NCC |  OM | 23rd Sept 2020 |