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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 in Austria
563 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 91.212.172.0/24 | 256 | RIPE NCC |  AT | 19th Sept 2022 |
| 91.215.240.0/22 | 1k | RIPE NCC | AT | 1st Sept 2009 |
| 91.216.8.0/24 | 256 | RIPE NCC | AT | 27th Aug 2012 |
| 91.225.0.0/24 | 256 | RIPE NCC | AT | 2nd Dec 2020 |
| 91.227.241.0/24 | 256 | RIPE NCC | AT | 18th May 2011 |
| 91.239.15.0/24 | 256 | RIPE NCC | AT | 11th Nov 2019 |
| 91.239.37.0/24 | 256 | RIPE NCC | AT | 11th Nov 2019 |
| 92.114.104.0/23 | 512 | RIPE NCC | AT | 15th Oct 2007 |
| 92.119.148.0/22 | 1k | RIPE NCC | AT | 12th Mar 2019 |
| 94.127.21.0/24 | 256 | RIPE NCC | AT | 9th Jul 2026 |
| 94.140.12.0/23 | 512 | RIPE NCC | AT | 28th Nov 2008 |
| 94.140.20.0/22 | 1k | RIPE NCC | AT | 28th Nov 2008 |
| 94.140.26.0/23 | 512 | RIPE NCC | AT | 28th Nov 2008 |