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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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
85,108 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 185.57.25.0/24 | 256 | RIPE NCC |  DE | 9th May 2014 |
| 185.57.26.0/23 | 512 | RIPE NCC | DE | 9th May 2014 |
| 185.57.92.0/22 | 1k | RIPE NCC |  GB | 13th May 2014 |
| 185.58.104.0/22 | 1k | RIPE NCC |  IT | 20th May 2014 |
| 185.58.108.0/22 | 1k | RIPE NCC | DE | 21st May 2014 |
| 185.58.184.0/22 | 1k | RIPE NCC |  FR | 23rd May 2014 |
| 185.58.236.0/22 | 1k | RIPE NCC |  NL | 26th May 2014 |
| 185.59.176.0/22 | 1k | RIPE NCC | GB | 3rd Jun 2014 |
| 185.59.218.0/24 | 256 | RIPE NCC |  RU | 4th Jun 2014 |
| 185.59.236.0/22 | 1k | RIPE NCC |  NO | 4th Jun 2014 |
| 185.59.29.0/24 | 256 | RIPE NCC |  TR | 27th May 2014 |
| 185.59.88.0/22 | 1k | RIPE NCC |  PL | 28th May 2014 |
| 185.6.16.0/22 | 1k | RIPE NCC |  PS | 8th Oct 2012 |
| 185.60.100.0/22 | 1k | RIPE NCC |  HU | 6th Jun 2014 |
| 185.60.108.0/22 | 1k | RIPE NCC | FR | 10th Jun 2014 |
| 185.60.181.0/24 | 256 | RIPE NCC |  CH | 28th May 2026 |
| 185.60.183.0/24 | 256 | RIPE NCC | IT | 1st Jun 2026 |
| 185.60.192.0/22 | 1k | RIPE NCC | IT | 12th Jun 2014 |
| 185.60.221.0/24 | 256 | RIPE NCC | HU | 15th May 2026 |
| 185.60.230.0/24 | 256 | RIPE NCC | PL | 12th Jun 2014 |
| 185.60.56.0/24 | 256 | RIPE NCC | FR | 1st Dec 2025 |
| 185.60.58.0/24 | 256 | RIPE NCC |  IL | 1st Dec 2025 |
| 185.60.80.0/22 | 1k | RIPE NCC | GB | 6th Jun 2014 |
| 185.61.100.0/22 | 1k | RIPE NCC | DE | 18th Jun 2014 |
| 185.61.172.0/22 | 1k | RIPE NCC | RU | 23rd Jun 2014 |
| 185.61.200.0/22 | 1k | RIPE NCC | PS | 24th Jun 2014 |
| 185.61.232.0/22 | 1k | RIPE NCC |  FI | 24th Jun 2014 |
| 185.61.240.0/22 | 1k | RIPE NCC |  CY | 25th Jun 2014 |
| 185.62.104.0/22 | 1k | RIPE NCC | CH | 30th Jun 2014 |
| 185.62.112.0/22 | 1k | RIPE NCC |  RS | 30th Jun 2014 |
| 185.62.2.0/24 | 256 | RIPE NCC |  SE | 19th Aug 2024 |
| 185.62.216.0/22 | 1k | RIPE NCC |  IE | 3rd Jul 2014 |
| 185.62.231.0/24 | 256 | RIPE NCC |  RO | 11th Jan 2024 |
| 185.62.4.0/22 | 1k | RIPE NCC | FR | 25th Jun 2014 |
| 185.62.44.0/24 | 256 | RIPE NCC | FR | 27th May 2026 |
| 185.62.45.0/24 | 256 | RIPE NCC | DE | 27th May 2026 |
| 185.62.46.0/24 | 256 | RIPE NCC | IT | 27th May 2026 |
| 185.63.112.0/24 | 256 | RIPE NCC | GB | 27th Jun 2022 |
| 185.63.115.0/24 | 256 | RIPE NCC | CH | 27th Jun 2022 |
| 185.63.134.0/24 | 256 | RIPE NCC | IL | 10th Jul 2014 |
| 185.63.144.0/22 | 1k | RIPE NCC |  US | 10th Jul 2014 |
| 185.63.248.0/22 | 1k | RIPE NCC |  AT | 15th Jul 2014 |
| 185.63.28.0/22 | 1k | RIPE NCC |  ES | 8th Jul 2014 |
| 185.64.144.0/22 | 1k | RIPE NCC |  IM | 21st Jul 2014 |
| 185.64.164.0/22 | 1k | RIPE NCC |  BE | 22nd Jul 2014 |
| 185.64.20.0/22 | 1k | RIPE NCC |  BG | 16th Jul 2014 |
| 185.64.5.0/24 | 256 | RIPE NCC |  AE | 7th Feb 2020 |
| 185.64.68.0/22 | 1k | RIPE NCC | IT | 17th Jul 2014 |
| 185.64.84.0/22 | 1k | RIPE NCC |  MK | 17th Jul 2014 |
| 185.65.105.0/24 | 256 | RIPE NCC |  MD | 7th Mar 2023 |