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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 |
|---|---|---|---|---|
| 185.221.60.0/24 | 256 | RIPE NCC |  GB | 8th Mar 2023 |
| 185.221.92.0/22 | 1k | RIPE NCC | GB | 18th Sept 2017 |
| 185.222.107.0/24 | 256 | RIPE NCC | GB | 20th Jan 2025 |
| 185.222.132.0/22 | 1k | RIPE NCC |  RO | 25th Sept 2017 |
| 185.222.136.0/23 | 512 | RIPE NCC |  DE | 25th Sept 2017 |
| 185.222.176.0/22 | 1k | RIPE NCC |  SE | 26th Sept 2017 |
| 185.222.209.0/24 | 256 | RIPE NCC |  CH | 30th Nov 2020 |
| 185.222.43.0/24 | 256 | RIPE NCC | DE | 6th Jul 2021 |
| 185.222.52.0/22 | 1k | RIPE NCC |  RU | 22nd Sept 2017 |
| 185.222.61.0/24 | 256 | RIPE NCC | DE | 15th Jan 2025 |
| 185.222.62.0/24 | 256 | RIPE NCC |  NL | 15th Jan 2025 |
| 185.222.63.0/24 | 256 | RIPE NCC |  FR | 15th Jan 2025 |
| 185.222.76.0/22 | 1k | RIPE NCC |  MT | 22nd Sept 2017 |
| 185.223.100.0/22 | 1k | RIPE NCC |  NO | 2nd Oct 2017 |
| 185.223.162.0/24 | 256 | RIPE NCC | GB | 7th Dec 2020 |
| 185.223.164.0/22 | 1k | RIPE NCC |  AT | 26th Aug 2019 |
| 185.223.212.0/24 | 256 | RIPE NCC | RU | 10th Dec 2020 |
| 185.223.8.0/22 | 1k | RIPE NCC | SE | 28th Sept 2017 |
| 185.224.144.0/22 | 1k | RIPE NCC | AT | 9th Oct 2017 |
| 185.224.148.0/22 | 1k | RIPE NCC | DE | 9th Oct 2017 |
| 185.224.20.0/22 | 1k | RIPE NCC |  IE | 5th Oct 2017 |
| 185.224.208.0/22 | 1k | RIPE NCC | GB | 10th Oct 2017 |
| 185.224.224.0/22 | 1k | RIPE NCC | DE | 29th May 2019 |
| 185.224.232.0/22 | 1k | RIPE NCC | GB | 11th Oct 2017 |
| 185.224.244.0/22 | 1k | RIPE NCC | CH | 11th Oct 2017 |
| 185.224.29.0/24 | 256 | RIPE NCC | DE | 7th Mar 2023 |
| 185.224.68.0/22 | 1k | RIPE NCC | GB | 6th Oct 2017 |
| 185.224.84.0/22 | 1k | RIPE NCC | FR | 6th Oct 2017 |
| 185.225.108.0/22 | 1k | RIPE NCC |  PL | 12th Oct 2017 |
| 185.225.124.0/24 | 256 | RIPE NCC | GB | 15th Dec 2020 |
| 185.225.125.0/24 | 256 | RIPE NCC | CH | 16th Dec 2020 |
| 185.225.127.0/24 | 256 | RIPE NCC | DE | 16th Dec 2020 |
| 185.225.136.0/22 | 1k | RIPE NCC | DE | 13th Oct 2017 |
| 185.225.228.0/22 | 1k | RIPE NCC | PL | 16th Oct 2017 |
| 185.225.25.0/24 | 256 | RIPE NCC | DE | 23rd May 2019 |
| 185.225.73.0/24 | 256 | RIPE NCC |  IT | 12th Oct 2017 |
| 185.226.12.0/22 | 1k | RIPE NCC | FR | 16th Oct 2017 |
| 185.226.144.0/22 | 1k | RIPE NCC | DE | 18th Oct 2017 |
| 185.226.156.0/22 | 1k | RIPE NCC |  BE | 19th Oct 2017 |
| 185.226.208.0/22 | 1k | RIPE NCC | GB | 19th Oct 2017 |
| 185.226.230.0/24 | 256 | RIPE NCC |  ES | 19th Oct 2017 |
| 185.226.231.0/24 | 256 | RIPE NCC | ES | 19th Oct 2017 |
| 185.226.72.0/22 | 1k | RIPE NCC | AT | 17th Oct 2017 |
| 185.226.80.0/22 | 1k | RIPE NCC | RO | 17th Oct 2017 |
| 185.227.124.0/22 | 1k | RIPE NCC | NO | 24th Oct 2017 |
| 185.227.172.0/22 | 1k | RIPE NCC | ES | 24th Oct 2017 |
| 185.227.196.0/22 | 1k | RIPE NCC | GB | 24th Oct 2017 |
| 185.227.20.0/22 | 1k | RIPE NCC | CH | 20th Oct 2017 |
| 185.227.208.0/22 | 1k | RIPE NCC | IE | 24th Oct 2017 |
| 185.227.216.0/22 | 1k | RIPE NCC | ES | 25th Oct 2017 |