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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 in France
1,379 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 185.15.48.0/22 | 1k | RIPE NCC |  FR | 10th Jan 2013 |
| 185.154.172.0/22 | 1k | RIPE NCC | FR | 2nd Jun 2016 |
| 185.156.50.0/24 | 256 | RIPE NCC | FR | 16th Jun 2026 |
| 185.167.248.0/22 | 1k | RIPE NCC | FR | 14th Sept 2016 |
| 185.17.248.0/22 | 1k | RIPE NCC | FR | 4th Feb 2013 |
| 185.170.12.0/22 | 1k | RIPE NCC | FR | 27th Sept 2016 |
| 185.170.148.0/22 | 1k | RIPE NCC | FR | 30th Sept 2016 |
| 185.172.232.0/22 | 1k | RIPE NCC | FR | 13th Oct 2016 |
| 185.173.252.0/22 | 1k | RIPE NCC | FR | 20th Oct 2016 |
| 185.176.133.0/24 | 256 | RIPE NCC | FR | 12th Jan 2024 |
| 185.188.28.0/24 | 256 | RIPE NCC | FR | 26th Jan 2026 |
| 185.191.147.0/24 | 256 | RIPE NCC | FR | 23rd Feb 2017 |
| 185.191.152.0/22 | 1k | RIPE NCC | FR | 23rd Feb 2017 |
| 185.196.30.0/24 | 256 | RIPE NCC | FR | 11th Jan 2024 |
| 185.198.236.0/22 | 1k | RIPE NCC | FR | 11th Apr 2017 |
| 185.199.40.0/22 | 1k | RIPE NCC | FR | 12th Apr 2017 |
| 185.206.136.0/22 | 1k | RIPE NCC | FR | 1st Jun 2017 |
| 185.212.74.0/24 | 256 | ARIN | FR | 12th Aug 2019 |
| 185.213.72.0/22 | 1k | RIPE NCC | FR | 17th Jul 2017 |
| 185.217.120.0/22 | 1k | RIPE NCC | FR | 14th Aug 2017 |
| 185.217.36.0/24 | 256 | RIPE NCC | FR | 17th Nov 2020 |
| 185.218.172.0/22 | 1k | RIPE NCC | FR | 23rd Aug 2017 |
| 185.222.63.0/24 | 256 | RIPE NCC | FR | 15th Jan 2025 |
| 185.224.84.0/22 | 1k | RIPE NCC | FR | 6th Oct 2017 |
| 185.226.12.0/22 | 1k | RIPE NCC | FR | 16th Oct 2017 |
| 185.228.156.0/22 | 1k | RIPE NCC | FR | 27th Oct 2017 |
| 185.228.84.0/22 | 1k | RIPE NCC | FR | 26th Oct 2017 |
| 185.23.79.0/24 | 256 | RIPE NCC | FR | 22nd Jul 2020 |
| 185.231.8.0/22 | 1k | RIPE NCC | FR | 9th Nov 2017 |
| 185.234.76.0/22 | 1k | RIPE NCC | FR | 28th Nov 2017 |
| 185.241.112.0/22 | 1k | RIPE NCC | FR | 15th Jan 2018 |
| 185.242.140.0/22 | 1k | RIPE NCC | FR | 18th Jan 2018 |
| 185.242.187.0/24 | 256 | RIPE NCC | FR | 22nd Feb 2021 |
| 185.247.104.0/22 | 1k | RIPE NCC | FR | 1st Mar 2018 |
| 185.248.145.0/24 | 256 | RIPE NCC | FR | 29th Nov 2022 |
| 185.251.68.0/24 | 256 | RIPE NCC | FR | 11th Mar 2021 |
| 185.255.139.0/24 | 256 | RIPE NCC | FR | 23rd Mar 2021 |
| 185.255.4.0/22 | 1k | RIPE NCC | FR | 12th Apr 2018 |
| 185.30.216.0/22 | 1k | RIPE NCC | FR | 17th Jul 2013 |
| 185.36.12.0/22 | 1k | RIPE NCC | FR | 24th Sept 2013 |
| 185.36.64.0/22 | 1k | RIPE NCC | FR | 26th Sept 2013 |
| 185.38.196.0/22 | 1k | RIPE NCC | FR | 24th Oct 2013 |
| 185.39.156.0/22 | 1k | RIPE NCC | FR | 4th Nov 2013 |
| 185.46.165.0/24 | 256 | RIPE NCC | FR | 3rd Feb 2014 |
| 185.48.6.0/24 | 256 | RIPE NCC | FR | 11th Aug 2025 |
| 185.54.8.0/22 | 1k | RIPE NCC | FR | 15th Apr 2014 |
| 185.58.184.0/22 | 1k | RIPE NCC | FR | 23rd May 2014 |
| 185.60.108.0/22 | 1k | RIPE NCC | FR | 10th Jun 2014 |
| 185.60.56.0/24 | 256 | RIPE NCC | FR | 1st Dec 2025 |
| 185.62.4.0/22 | 1k | RIPE NCC | FR | 25th Jun 2014 |