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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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
25,283 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 193.201.165.0/24 | 256 | RIPE NCC |  SI | 4th Jul 2002 |
| 193.201.174.0/24 | 256 | RIPE NCC |  GB | 18th Jul 2002 |
| 193.201.196.0/24 | 256 | RIPE NCC |  FR | 26th May 2026 |
| 193.201.197.0/24 | 256 | RIPE NCC | GB | 27th May 2026 |
| 193.201.22.0/24 | 256 | RIPE NCC |  CH | 19th Jan 2026 |
| 193.201.224.0/22 | 1k | RIPE NCC |  UA | 23rd Jul 2002 |
| 193.201.23.0/24 | 256 | RIPE NCC |  IR | 19th Jan 2026 |
| 193.201.28.0/23 | 512 | RIPE NCC |  IT | 4th Jun 2002 |
| 193.201.47.0/24 | 256 | RIPE NCC |  NL | 18th Aug 2026 |
| 193.201.56.0/22 | 1k | RIPE NCC |  US | 9th May 2018 |
| 193.201.8.0/24 | 256 | RIPE NCC |  RU | 16th Sept 2021 |
| 193.201.92.0/22 | 1k | RIPE NCC | GB | 25th Jun 2002 |
| 193.202.1.0/24 | 256 | RIPE NCC | GB | 7th Apr 1993 |
| 193.202.104.0/24 | 256 | RIPE NCC | NL | 21st Jun 1993 |
| 193.202.105.0/24 | 256 | RIPE NCC | GB | 13th Jan 2009 |
| 193.202.114.0/24 | 256 | RIPE NCC |  IE | 18th Nov 2019 |
| 193.202.2.0/23 | 512 | RIPE NCC | GB | 7th Apr 1993 |
| 193.202.224.0/20 | 4.1k | RIPE NCC | GB | 13th Jul 1993 |
| 193.202.24.0/22 | 1k | RIPE NCC |  DE | 2nd Aug 1993 |
| 193.202.28.0/23 | 512 | RIPE NCC | DE | 2nd Aug 1993 |
| 193.202.30.0/24 | 256 | RIPE NCC | DE | 2nd Aug 1993 |
| 193.202.4.0/22 | 1k | RIPE NCC | GB | 7th Apr 1993 |
| 193.202.46.0/23 | 512 | RIPE NCC | CH | 12th Oct 1993 |
| 193.202.48.0/21 | 2k | RIPE NCC | CH | 12th Oct 1993 |
| 193.202.56.0/22 | 1k | RIPE NCC | CH | 12th Oct 1993 |
| 193.202.60.0/23 | 512 | RIPE NCC | CH | 12th Oct 1993 |
| 193.202.62.0/23 | 512 | RIPE NCC | GB | 22nd Nov 1993 |
| 193.202.77.0/24 | 256 | RIPE NCC | FR | 9th Sept 1993 |
| 193.202.78.0/23 | 512 | RIPE NCC | FR | 9th Sept 1993 |
| 193.203.114.0/23 | 512 | RIPE NCC |  RO | 3rd Jun 2008 |
| 193.203.192.0/23 | 512 | RIPE NCC | GB | 31st Oct 2005 |
| 193.203.202.0/24 | 256 | RIPE NCC |  MD | 3rd Nov 2005 |
| 193.203.212.0/23 | 512 | RIPE NCC | FR | 8th Nov 2005 |
| 193.203.23.0/24 | 256 | RIPE NCC |  RS | 24th Nov 1994 |
| 193.203.236.0/23 | 512 | RIPE NCC | UA | 28th Jan 2000 |
| 193.203.255.0/24 | 256 | RIPE NCC | GB | 8th Feb 2000 |
| 193.203.4.0/24 | 256 | RIPE NCC | IE | 18th Nov 2019 |
| 193.218.105.0/24 | 256 | RIPE NCC |  TR | 18th Nov 2019 |
| 193.218.106.0/23 | 512 | RIPE NCC |  GR | 1st Dec 1994 |
| 193.218.108.0/22 | 1k | RIPE NCC | GR | 1st Dec 1994 |
| 193.218.121.0/24 | 256 | RIPE NCC | TR | 18th Nov 2019 |
| 193.218.123.0/24 | 256 | RIPE NCC |  MC | 19th Nov 2019 |
| 193.218.128.0/22 | 1k | RIPE NCC |  NO | 8th Dec 2006 |
| 193.218.184.0/23 | 512 | RIPE NCC | DE | 1st Apr 2010 |
| 193.218.2.0/23 | 512 | RIPE NCC | GR | 1st Dec 1994 |
| 193.218.205.0/26 | 64 | RIPE NCC | CH | 19th Nov 2007 |
| 193.218.205.128/26 | 64 | RIPE NCC |  CY | 14th Sept 2012 |
| 193.218.205.192/27 | 32 | RIPE NCC | CY | 14th Sept 2012 |
| 193.218.205.64/26 | 64 | RIPE NCC | CY | 14th Sept 2012 |
| 193.218.207.128/25 | 128 | RIPE NCC |  IL | 9th Jan 2011 |