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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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
24,902 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 185.44.224.0/22 | 1k | RIPE NCC | 10th Jan 2014 | |
| 185.44.32.0/22 | 1k | RIPE NCC | 27th Dec 2013 | |
| 185.46.0.0/22 | 1k | RIPE NCC | 27th Jan 2014 | |
| 185.46.152.0/24 | 256 | RIPE NCC | 31st Jan 2014 | |
| 185.46.153.0/24 | 256 | RIPE NCC | 31st Jan 2014 | |
| 185.46.154.0/24 | 256 | RIPE NCC | 31st Jan 2014 | |
| 185.46.155.0/24 | 256 | RIPE NCC | 31st Jan 2014 | |
| 185.46.156.0/22 | 1k | RIPE NCC | 31st Jan 2014 | |
| 185.46.165.0/24 | 256 | RIPE NCC | 3rd Feb 2014 | |
| 185.46.166.0/23 | 512 | RIPE NCC | 3rd Feb 2014 | |
| 185.46.4.0/22 | 1k | RIPE NCC | 20th Feb 2018 | |
| 185.47.100.0/22 | 1k | RIPE NCC | 11th Feb 2014 | |
| 185.47.166.0/24 | 256 | RIPE NCC | 11th Jan 2024 | |
| 185.47.196.0/22 | 1k | RIPE NCC | 14th Feb 2014 | |
| 185.47.20.0/22 | 1k | RIPE NCC | 6th Feb 2014 | |
| 185.47.24.0/22 | 1k | RIPE NCC | 6th Feb 2014 | |
| 185.47.7.0/24 | 256 | RIPE NCC | 6th Feb 2014 | |
| 185.47.72.0/22 | 1k | RIPE NCC | 10th Feb 2014 | |
| 185.48.184.0/22 | 1k | RIPE NCC | 24th Feb 2014 | |
| 185.48.6.0/24 | 256 | RIPE NCC | 11th Aug 2025 | |
| 185.48.7.0/24 | 256 | RIPE NCC | 11th Aug 2025 | |
| 185.49.104.0/24 | 256 | RIPE NCC | 4th Mar 2014 | |
| 185.49.124.0/22 | 1k | RIPE NCC | 5th Mar 2014 | |
| 185.49.88.0/22 | 1k | RIPE NCC | 28th Feb 2014 | |
| 185.49.92.0/22 | 1k | RIPE NCC | 3rd Mar 2014 | |
| 185.5.116.0/22 | 1k | RIPE NCC | 2nd Oct 2012 | |
| 185.5.130.0/24 | 256 | RIPE NCC | 7th Mar 2023 | |
| 185.5.176.0/22 | 1k | RIPE NCC | 4th Oct 2012 | |
| 185.5.212.0/24 | 256 | RIPE NCC | 13th Jun 2025 | |
| 185.5.213.0/24 | 256 | RIPE NCC | 16th Jun 2025 | |
| 185.5.215.0/24 | 256 | RIPE NCC | 16th Jun 2025 | |
| 185.5.220.0/22 | 1k | RIPE NCC | 5th Oct 2012 | |
| 185.5.4.0/22 | 1k | RIPE NCC | 28th Sept 2012 | |
| 185.50.144.0/22 | 1k | RIPE NCC | 17th Mar 2014 | |
| 185.50.156.0/22 | 1k | RIPE NCC | 17th Mar 2014 | |
| 185.50.160.0/22 | 1k | RIPE NCC | 18th Mar 2014 | |
| 185.50.236.0/24 | 256 | RIPE NCC | 26th May 2025 | |
| 185.50.237.0/24 | 256 | RIPE NCC | 26th May 2025 | |
| 185.50.239.0/24 | 256 | RIPE NCC | 26th May 2025 | |
| 185.50.240.0/22 | 1k | RIPE NCC | 19th Mar 2014 | |
| 185.50.252.0/24 | 256 | RIPE NCC | 1st Jul 2025 | |
| 185.50.36.0/24 | 256 | RIPE NCC | 12th Mar 2014 | |
| 185.50.7.0/24 | 256 | RIPE NCC | 10th Mar 2014 | |
| 185.51.119.0/24 | 256 | RIPE NCC | 21st Mar 2014 | |
| 185.51.80.0/22 | 1k | RIPE NCC | 21st Mar 2014 | |
| 185.52.104.0/22 | 1k | RIPE NCC | 31st Mar 2014 | |
| 185.52.108.0/22 | 1k | RIPE NCC | 31st Mar 2014 | |
| 185.52.174.0/23 | 512 | RIPE NCC | 2nd Apr 2014 | |
| 185.52.208.0/22 | 1k | RIPE NCC | 2nd Apr 2014 | |
| 185.52.24.0/22 | 1k | RIPE NCC | 27th Mar 2014 |