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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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
25,296 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 194.145.126.0/24 | 256 | RIPE NCC |  GG | 24th Oct 2008 |
| 194.145.142.0/23 | 512 | RIPE NCC |  AT | 31st Oct 2019 |
| 194.145.144.0/24 | 256 | RIPE NCC |  FR | 28th Jul 1999 |
| 194.145.145.0/24 | 256 | RIPE NCC |  SE | 5th Aug 1999 |
| 194.145.148.0/23 | 512 | RIPE NCC |  GB | 27th Aug 1999 |
| 194.145.154.0/24 | 256 | RIPE NCC | GB | 2nd Nov 2004 |
| 194.145.160.0/22 | 1k | RIPE NCC |  BG | 24th Aug 2004 |
| 194.145.192.0/23 | 512 | RIPE NCC |  DE | 18th Mar 2005 |
| 194.145.196.0/23 | 512 | RIPE NCC | AT | 31st Oct 2019 |
| 194.145.204.0/23 | 512 | RIPE NCC |  PL | 30th Mar 2005 |
| 194.145.210.0/23 | 512 | RIPE NCC | FR | 31st Oct 2019 |
| 194.145.212.0/23 | 512 | RIPE NCC | FR | 31st Oct 2019 |
| 194.145.228.0/24 | 256 | RIPE NCC | PL | 9th Nov 2004 |
| 194.145.252.0/22 | 1k | RIPE NCC | DE | 24th Mar 1999 |
| 194.145.59.0/24 | 256 | RIPE NCC | DE | 2nd Jun 1998 |
| 194.145.60.0/23 | 512 | RIPE NCC | DE | 2nd Jun 1998 |
| 194.145.62.0/24 | 256 | RIPE NCC | DE | 2nd Jun 1998 |
| 194.146.100.0/22 | 1k | RIPE NCC |  IT | 29th May 2018 |
| 194.146.108.0/24 | 256 | RIPE NCC | SE | 23rd Sept 2003 |
| 194.146.112.0/24 | 256 | RIPE NCC |  UA | 23rd Sept 2003 |
| 194.146.117.0/24 | 256 | RIPE NCC | SE | 3rd Oct 2003 |
| 194.146.118.0/24 | 256 | RIPE NCC | DE | 2nd Oct 2003 |
| 194.146.125.0/24 | 256 | RIPE NCC |  RO | 23rd Oct 2003 |
| 194.146.128.0/22 | 1k | RIPE NCC | PL | 7th Oct 2003 |
| 194.146.16.0/22 | 1k | RIPE NCC |  CH | 9th Jun 1995 |
| 194.146.176.0/22 | 1k | RIPE NCC | GB | 27th Oct 2003 |
| 194.146.20.0/23 | 512 | RIPE NCC | CH | 9th Jun 1995 |
| 194.146.22.0/24 | 256 | RIPE NCC | CH | 9th Jun 1995 |
| 194.146.27.0/24 | 256 | RIPE NCC | FR | 26th Jun 1995 |
| 194.146.46.0/24 | 256 | RIPE NCC | FR | 13th Jul 1995 |
| 194.146.64.0/23 | 512 | RIPE NCC |  EE | 31st Oct 2019 |
| 194.146.71.0/24 | 256 | RIPE NCC | GB | 2nd Oct 1995 |
| 194.146.72.0/21 | 2k | RIPE NCC | FR | 24th Aug 1995 |
| 194.146.80.0/23 | 512 | RIPE NCC | FR | 24th Aug 1995 |
| 194.146.82.0/23 | 512 | RIPE NCC | EE | 31st Oct 2019 |
| 194.146.99.0/24 | 256 | RIPE NCC |  ES | 22nd Nov 2019 |
| 194.147.108.0/24 | 256 | RIPE NCC | PL | 29th Feb 2012 |
| 194.147.143.0/24 | 256 | RIPE NCC | CH | 1st Sept 1993 |
| 194.147.151.0/24 | 256 | RIPE NCC | CH | 1st Sept 1993 |
| 194.147.170.0/24 | 256 | RIPE NCC |  IR | 22nd Nov 2019 |
| 194.147.18.0/23 | 512 | RIPE NCC |  DK | 1st Sept 1993 |
| 194.147.20.0/23 | 512 | RIPE NCC | DK | 1st Sept 1993 |
| 194.147.208.0/23 | 512 | RIPE NCC | CH | 1st Sept 1993 |
| 194.147.210.0/24 | 256 | RIPE NCC | CH | 1st Sept 1993 |
| 194.147.22.0/23 | 512 | RIPE NCC | ES | 31st Oct 2019 |
| 194.147.223.0/24 | 256 | RIPE NCC | BG | 18th Nov 2022 |
| 194.147.224.0/24 | 256 | RIPE NCC |  RU | 16th Nov 2022 |
| 194.147.229.0/24 | 256 | RIPE NCC | CH | 1st Sept 1993 |
| 194.147.231.0/24 | 256 | RIPE NCC | CH | 1st Sept 1993 |
| 194.147.232.0/24 | 256 | RIPE NCC | CH | 1st Sept 1993 |