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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 Ukraine
500 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 91.216.196.0/24 | 256 | RIPE NCC | 17th Jun 2010 | |
| 91.216.237.0/24 | 256 | RIPE NCC | 30th Jun 2010 | |
| 91.216.244.0/24 | 256 | RIPE NCC | 6th Jul 2010 | |
| 91.216.251.0/24 | 256 | RIPE NCC | 13th Jul 2010 | |
| 91.216.61.0/24 | 256 | RIPE NCC | 3rd May 2010 | |
| 91.217.100.0/23 | 512 | RIPE NCC | 17th Sept 2010 | |
| 91.220.255.0/24 | 256 | RIPE NCC | 17th Dec 2010 | |
| 91.220.91.0/24 | 256 | RIPE NCC | 29th Oct 2010 | |
| 91.221.14.0/23 | 512 | RIPE NCC | 14th Oct 2010 | |
| 91.221.154.0/23 | 512 | RIPE NCC | 3rd Dec 2010 | |
| 91.221.166.0/23 | 512 | RIPE NCC | 9th Dec 2010 | |
| 91.223.234.0/24 | 256 | RIPE NCC | 16th Mar 2011 | |
| 91.223.255.0/24 | 256 | RIPE NCC | 27th Jan 2026 | |
| 91.223.30.0/24 | 256 | RIPE NCC | 21st Jan 2011 | |
| 91.223.34.0/24 | 256 | RIPE NCC | 15th Jul 2024 | |
| 91.225.116.0/22 | 1k | RIPE NCC | 9th Feb 2011 | |
| 91.226.187.0/24 | 256 | RIPE NCC | 26th Apr 2011 | |
| 91.226.190.0/23 | 512 | RIPE NCC | 26th Apr 2011 | |
| 91.226.192.0/24 | 256 | RIPE NCC | 26th Apr 2011 | |
| 91.229.101.0/24 | 256 | RIPE NCC | 20th Jun 2011 | |
| 91.229.115.0/24 | 256 | RIPE NCC | 20th Jun 2011 | |
| 91.229.155.0/24 | 256 | RIPE NCC | 25th Mar 2025 | |
| 91.229.204.0/22 | 1k | RIPE NCC | 24th Jun 2011 | |
| 91.231.181.0/24 | 256 | RIPE NCC | 8th Jul 2021 | |
| 91.231.98.0/24 | 256 | RIPE NCC | 20th Sept 2011 | |
| 91.233.101.0/24 | 256 | RIPE NCC | 7th Dec 2011 | |
| 91.234.210.0/23 | 512 | RIPE NCC | 30th Jan 2012 | |
| 91.237.12.0/22 | 1k | RIPE NCC | 16th Mar 2012 | |
| 91.237.152.0/24 | 256 | RIPE NCC | 27th Mar 2012 | |
| 91.237.204.0/22 | 1k | RIPE NCC | 29th Mar 2012 | |
| 91.237.36.0/24 | 256 | RIPE NCC | 5th Feb 2024 | |
| 91.237.4.0/24 | 256 | RIPE NCC | 16th Mar 2012 | |
| 91.237.6.0/23 | 512 | RIPE NCC | 16th Mar 2012 | |
| 91.238.146.0/23 | 512 | RIPE NCC | 13th Apr 2012 | |
| 91.240.244.0/24 | 256 | RIPE NCC | 9th Jul 2012 | |
| 91.244.127.0/24 | 256 | RIPE NCC | 16th Aug 2012 | |
| 91.244.128.0/19 | 8.2k | RIPE NCC | 16th Aug 2012 | |
| 92.119.240.0/22 | 1k | RIPE NCC | 13th Mar 2019 | |
| 93.88.48.0/20 | 4.1k | RIPE NCC | 13th Mar 2008 | |
| 94.231.38.0/23 | 512 | RIPE NCC | 27th Jan 2009 | |
| 95.128.195.0/24 | 256 | RIPE NCC | 15th Jan 2024 | |
| 95.132.0.0/16 | 65.5k | RIPE NCC | 23rd Jan 2009 | |
| 95.133.0.0/17 | 32.8k | RIPE NCC | 23rd Jan 2009 | |
| 95.133.132.0/22 | 1k | RIPE NCC | 23rd Jan 2009 | |
| 95.133.144.0/20 | 4.1k | RIPE NCC | 23rd Jan 2009 | |
| 95.133.170.0/23 | 512 | RIPE NCC | 23rd Jan 2009 | |
| 95.133.172.0/22 | 1k | RIPE NCC | 23rd Jan 2009 | |
| 95.133.176.0/20 | 4.1k | RIPE NCC | 23rd Jan 2009 | |
| 95.133.208.0/20 | 4.1k | RIPE NCC | 23rd Jan 2009 | |
| 95.215.40.0/22 | 1k | RIPE NCC | 18th Jul 2012 |