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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 registered through RIPE NCC
25,312 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 195.245.240.0/24 | 256 | RIPE NCC | 22nd Jan 2003 | |
| 195.245.243.0/24 | 256 | RIPE NCC | 23rd Jan 2003 | |
| 195.245.246.0/24 | 256 | RIPE NCC | 25th Nov 2019 | |
| 195.245.247.0/24 | 256 | RIPE NCC | 24th Jan 2003 | |
| 195.245.252.0/24 | 256 | RIPE NCC | 4th Feb 2003 | |
| 195.245.85.0/24 | 256 | RIPE NCC | 9th Dec 2020 | |
| 195.246.113.0/24 | 256 | RIPE NCC | 19th Jul 2024 | |
| 195.246.160.0/19 | 8.2k | RIPE NCC | 11th Nov 1997 | |
| 195.246.192.0/24 | 256 | RIPE NCC | 24th Feb 2025 | |
| 195.246.193.0/24 | 256 | RIPE NCC | 25th Feb 2025 | |
| 195.246.195.0/24 | 256 | RIPE NCC | 25th Feb 2025 | |
| 195.246.196.0/24 | 256 | RIPE NCC | 19th Feb 2025 | |
| 195.246.197.0/24 | 256 | RIPE NCC | 25th Nov 2019 | |
| 195.246.248.0/23 | 512 | RIPE NCC | 7th Nov 2019 | |
| 195.246.252.0/23 | 512 | RIPE NCC | 31st Mar 2006 | |
| 195.248.192.0/19 | 8.2k | RIPE NCC | 10th Apr 1997 | |
| 195.248.66.0/24 | 256 | RIPE NCC | 23rd Jun 2006 | |
| 195.248.81.0/24 | 256 | RIPE NCC | 24th Aug 2022 | |
| 195.248.84.0/24 | 256 | RIPE NCC | 25th Nov 2019 | |
| 195.248.92.0/24 | 256 | RIPE NCC | 5th Jul 2006 | |
| 195.248.94.0/24 | 256 | RIPE NCC | 13th Jan 2009 | |
| 195.250.216.0/21 | 2k | RIPE NCC | 14th May 1997 | |
| 195.250.32.0/24 | 256 | RIPE NCC | 18th Jan 2006 | |
| 195.250.35.0/24 | 256 | RIPE NCC | 20th Jan 2006 | |
| 195.250.36.0/24 | 256 | RIPE NCC | 20th Jan 2006 | |
| 195.250.41.0/24 | 256 | RIPE NCC | 20th Jan 2006 | |
| 195.250.49.0/24 | 256 | RIPE NCC | 29th Apr 2022 | |
| 195.250.62.0/24 | 256 | RIPE NCC | 31st Jan 2006 | |
| 195.253.192.0/22 | 1k | RIPE NCC | 9th Jan 1998 | |
| 195.253.196.0/24 | 256 | RIPE NCC | 9th Jan 1998 | |
| 195.253.212.0/22 | 1k | RIPE NCC | 9th Jan 1998 | |
| 195.253.216.0/21 | 2k | RIPE NCC | 9th Jan 1998 | |
| 195.253.224.0/22 | 1k | RIPE NCC | 9th Jan 1998 | |
| 195.253.228.0/22 | 1k | RIPE NCC | 9th Jan 1998 | |
| 195.253.232.0/22 | 1k | RIPE NCC | 9th Jan 1998 | |
| 195.253.252.0/22 | 1k | RIPE NCC | 9th Jan 1998 | |
| 195.254.150.0/24 | 256 | RIPE NCC | 21st Nov 2005 | |
| 195.254.152.0/23 | 512 | RIPE NCC | 21st Nov 2005 | |
| 195.254.158.0/23 | 512 | RIPE NCC | 24th Nov 2005 | |
| 195.254.162.0/23 | 512 | RIPE NCC | 17th May 2010 | |
| 195.254.186.0/23 | 512 | RIPE NCC | 7th Nov 2019 | |
| 195.26.24.0/24 | 256 | RIPE NCC | 3rd Dec 2002 | |
| 195.26.88.0/22 | 1k | RIPE NCC | 19th Jul 2006 | |
| 195.28.172.0/23 | 512 | RIPE NCC | 4th Aug 2004 | |
| 195.28.174.0/23 | 512 | RIPE NCC | 5th Aug 2004 | |
| 195.28.18.0/23 | 512 | RIPE NCC | 5th Mar 2008 | |
| 195.3.208.0/22 | 1k | RIPE NCC | 30th Aug 2006 | |
| 195.34.131.0/24 | 256 | RIPE NCC | 28th Oct 1996 | |
| 195.34.212.0/22 | 1k | RIPE NCC | 12th Jan 2006 | |
| 195.34.216.0/22 | 1k | RIPE NCC | 13th Jan 2006 |