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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 Russia
2,050 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 45.92.174.0/24 | 256 | RIPE NCC |  RU | 1st Jul 2019 |
| 45.94.76.0/22 | 1k | RIPE NCC | RU | 5th Jul 2019 |
| 46.102.191.0/24 | 256 | RIPE NCC | RU | 25th Jun 2010 |
| 46.149.175.0/24 | 256 | RIPE NCC | RU | 29th Oct 2018 |
| 46.173.20.0/24 | 256 | RIPE NCC | RU | 20th Jan 2011 |
| 46.183.80.0/21 | 2k | RIPE NCC | RU | 6th Dec 2010 |
| 46.228.64.0/20 | 4.1k | RIPE NCC | RU | 4th Feb 2011 |
| 46.243.212.0/24 | 256 | RIPE NCC | RU | 28th Dec 2010 |
| 46.243.218.0/23 | 512 | RIPE NCC | RU | 28th Dec 2010 |
| 46.250.132.0/22 | 1k | RIPE NCC | RU | 28th Jan 2011 |
| 46.250.136.0/22 | 1k | RIPE NCC | RU | 28th Jan 2011 |
| 46.250.144.0/22 | 1k | RIPE NCC | RU | 28th Jan 2011 |
| 46.250.148.0/22 | 1k | RIPE NCC | RU | 28th Jan 2011 |
| 46.250.152.0/22 | 1k | RIPE NCC | RU | 28th Jan 2011 |
| 46.251.64.0/19 | 8.2k | RIPE NCC | RU | 3rd Feb 2011 |
| 46.29.37.0/24 | 256 | RIPE NCC | RU | 16th Jan 2025 |
| 5.182.36.0/22 | 1k | RIPE NCC | RU | 4th Apr 2019 |
| 5.8.88.0/22 | 1k | RIPE NCC | RU | 25th Apr 2012 |
| 51.250.128.0/17 | 32.8k | RIPE NCC | RU | 1st Sept 1993 |
| 62.113.87.0/24 | 256 | RIPE NCC | RU | 16th Aug 2000 |
| 62.113.91.0/24 | 256 | RIPE NCC | RU | 16th Aug 2000 |
| 62.122.212.0/24 | 256 | RIPE NCC | RU | 17th Apr 2009 |
| 62.152.192.0/19 | 8.2k | RIPE NCC | RU | 14th Dec 2009 |
| 62.213.124.0/24 | 256 | RIPE NCC | RU | 9th Nov 2001 |
| 62.213.65.0/24 | 256 | RIPE NCC | RU | 9th Nov 2001 |
| 62.213.80.0/23 | 512 | RIPE NCC | RU | 9th Nov 2001 |
| 62.213.93.0/24 | 256 | RIPE NCC | RU | 9th Nov 2001 |
| 62.3.63.0/24 | 256 | RIPE NCC | RU | 9th Nov 2021 |
| 62.76.151.0/24 | 256 | RIPE NCC | RU | 16th Jun 1997 |
| 62.76.240.0/22 | 1k | RIPE NCC | RU | 16th Jun 1997 |
| 62.76.244.0/23 | 512 | RIPE NCC | RU | 16th Jun 1997 |
| 62.76.48.0/21 | 2k | RIPE NCC | RU | 16th Jun 1997 |
| 62.76.56.0/22 | 1k | RIPE NCC | RU | 16th Jun 1997 |
| 62.76.60.0/23 | 512 | RIPE NCC | RU | 16th Jun 1997 |
| 77.243.240.0/20 | 4.1k | RIPE NCC | RU | 20th Mar 2007 |
| 77.244.160.0/20 | 4.1k | RIPE NCC | RU | 3rd Apr 2007 |
| 77.73.233.0/24 | 256 | RIPE NCC | RU | 30th Mar 2007 |
| 77.73.235.0/24 | 256 | RIPE NCC | RU | 30th Mar 2007 |
| 77.73.238.0/24 | 256 | RIPE NCC | RU | 30th Mar 2007 |
| 77.73.239.0/24 | 256 | RIPE NCC | RU | 30th Mar 2007 |
| 77.83.152.0/22 | 1k | RIPE NCC | RU | 13th Dec 2018 |
| 77.87.168.0/21 | 2k | RIPE NCC | RU | 10th Jul 2007 |
| 77.91.208.0/24 | 256 | RIPE NCC | RU | 11th Jun 2026 |
| 77.91.72.0/22 | 1k | RIPE NCC | RU | 25th Apr 2007 |
| 77.95.169.0/24 | 256 | RIPE NCC | RU | 17th Jan 2025 |
| 77.95.20.0/22 | 1k | RIPE NCC | RU | 24th May 2007 |
| 78.24.56.0/21 | 2k | RIPE NCC | RU | 28th Aug 2007 |
| 78.41.142.0/24 | 256 | RIPE NCC | RU | 12th Jan 2024 |
| 78.41.32.0/21 | 2k | RIPE NCC | RU | 30th Jul 2007 |
| 79.110.226.0/24 | 256 | RIPE NCC | RU | 23rd Sept 2021 |