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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 Italy
945 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 45.14.152.0/22 | 1k | RIPE NCC |  IT | 9th May 2019 |
| 45.143.158.0/23 | 512 | RIPE NCC | IT | 21st Aug 2019 |
| 45.155.8.0/22 | 1k | RIPE NCC | IT | 17th Sept 2019 |
| 45.159.66.0/23 | 512 | RIPE NCC | IT | 1st Oct 2019 |
| 45.87.36.0/22 | 1k | RIPE NCC | IT | 13th Jun 2019 |
| 45.88.56.0/24 | 256 | RIPE NCC | IT | 28th Jan 2026 |
| 45.89.120.0/22 | 1k | RIPE NCC | IT | 21st Jun 2019 |
| 45.9.96.0/22 | 1k | RIPE NCC | IT | 18th Apr 2019 |
| 45.90.126.0/23 | 512 | RIPE NCC | IT | 25th Jun 2019 |
| 45.91.229.0/24 | 256 | RIPE NCC | IT | 28th Jun 2019 |
| 45.91.230.0/23 | 512 | RIPE NCC | IT | 28th Jun 2019 |
| 46.102.255.0/24 | 256 | RIPE NCC | IT | 25th Jun 2010 |
| 46.149.97.0/24 | 256 | RIPE NCC | IT | 28th Jan 2020 |
| 46.182.152.0/21 | 2k | RIPE NCC | IT | 25th Nov 2010 |
| 46.245.235.0/24 | 256 | RIPE NCC | IT | 19th Aug 2024 |
| 46.29.104.0/21 | 2k | RIPE NCC | IT | 10th Aug 2010 |
| 46.30.217.0/24 | 256 | RIPE NCC | IT | 8th Sept 2010 |
| 46.30.218.0/24 | 256 | RIPE NCC | IT | 8th Sept 2010 |
| 46.30.222.0/23 | 512 | RIPE NCC | IT | 8th Sept 2010 |
| 5.172.100.0/22 | 1k | RIPE NCC | IT | 30th Jul 2012 |
| 5.172.104.0/21 | 2k | RIPE NCC | IT | 30th Jul 2012 |
| 5.172.112.0/20 | 4.1k | RIPE NCC | IT | 30th Jul 2012 |
| 5.178.126.0/23 | 512 | RIPE NCC | IT | 7th Aug 2012 |
| 62.204.44.0/24 | 256 | RIPE NCC | IT | 8th Oct 2021 |
| 62.233.63.0/24 | 256 | RIPE NCC | IT | 14th Oct 2021 |
| 62.3.21.0/24 | 256 | RIPE NCC | IT | 8th Nov 2021 |
| 64.254.160.0/20 | 4.1k | RIPE NCC | IT | 17th Oct 2007 |
| 67.231.176.0/20 | 4.1k | RIPE NCC | IT | 26th May 2009 |
| 79.108.128.0/21 | 2k | RIPE NCC | IT | 3rd Dec 2007 |
| 80.104.0.0/15 | 131k | RIPE NCC | IT | 17th Jul 2001 |
| 80.116.0.0/15 | 131k | RIPE NCC | IT | 6th Aug 2001 |
| 80.173.224.0/22 | 1k | RIPE NCC | IT | 11th Jun 2003 |
| 80.73.249.0/24 | 256 | RIPE NCC | IT | 7th Feb 2005 |
| 81.127.192.0/18 | 16.4k | RIPE NCC | IT | 8th Jul 2002 |
| 83.139.204.0/22 | 1k | RIPE NCC | IT | 7th Sept 2004 |
| 83.139.222.0/23 | 512 | RIPE NCC | IT | 7th Sept 2004 |
| 83.139.240.0/23 | 512 | RIPE NCC | IT | 7th Sept 2004 |
| 83.139.246.0/23 | 512 | RIPE NCC | IT | 7th Sept 2004 |
| 83.139.248.0/21 | 2k | RIPE NCC | IT | 7th Sept 2004 |
| 83.175.0.0/18 | 16.4k | RIPE NCC | IT | 27th May 2004 |
| 83.220.16.0/21 | 2k | RIPE NCC | IT | 29th Mar 2004 |
| 83.220.24.0/23 | 512 | RIPE NCC | IT | 29th Mar 2004 |
| 83.220.26.0/24 | 256 | RIPE NCC | IT | 29th Mar 2004 |
| 83.220.27.0/24 | 256 | RIPE NCC | IT | 29th Mar 2004 |
| 83.220.30.0/23 | 512 | RIPE NCC | IT | 29th Mar 2004 |
| 85.116.240.0/21 | 2k | RIPE NCC | IT | 16th Mar 2005 |
| 85.204.119.0/24 | 256 | RIPE NCC | IT | 13th Jan 2005 |
| 85.204.147.0/24 | 256 | RIPE NCC | IT | 13th Jan 2005 |
| 85.208.232.0/22 | 1k | RIPE NCC | IT | 22nd Feb 2019 |
| 85.8.153.0/24 | 256 | RIPE NCC | IT | 11th Jan 2024 |