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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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
25,269 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 185.1.25.0/24 | 256 | RIPE NCC |  CZ | 30th Apr 2014 |
| 185.1.250.0/24 | 256 | RIPE NCC |  UZ | 2nd Aug 2022 |
| 185.1.252.0/24 | 256 | RIPE NCC |  DE | 12th Aug 2022 |
| 185.1.253.0/24 | 256 | RIPE NCC | DE | 12th Aug 2022 |
| 185.1.26.0/24 | 256 | RIPE NCC |  FR | 26th May 2014 |
| 185.1.27.0/24 | 256 | RIPE NCC |  RS | 28th May 2014 |
| 185.1.29.0/24 | 256 | RIPE NCC |  GR | 3rd Jun 2020 |
| 185.1.30.0/24 | 256 | RIPE NCC |  BG | 2nd Sept 2014 |
| 185.1.31.0/24 | 256 | RIPE NCC |  AT | 18th Aug 2014 |
| 185.1.32.0/24 | 256 | RIPE NCC |  NL | 5th Nov 2014 |
| 185.1.33.0/24 | 256 | RIPE NCC |  GB | 21st Nov 2014 |
| 185.1.34.0/24 | 256 | RIPE NCC | CZ | 9th Dec 2014 |
| 185.1.35.0/24 | 256 | RIPE NCC | DE | 11th Dec 2014 |
| 185.1.36.0/24 | 256 | RIPE NCC |  RO | 3rd Feb 2015 |
| 185.1.37.0/24 | 256 | RIPE NCC |  PL | 28th Jan 2015 |
| 185.1.38.0/24 | 256 | RIPE NCC | FR | 25th Feb 2015 |
| 185.1.39.0/24 | 256 | RIPE NCC |  UA | 9th Oct 2015 |
| 185.1.4.0/22 | 1k | RIPE NCC | PL | 29th Oct 2012 |
| 185.1.40.0/24 | 256 | RIPE NCC | BG | 27th Feb 2015 |
| 185.1.41.0/24 | 256 | RIPE NCC |  RU | 13th Mar 2015 |
| 185.1.42.0/24 | 256 | RIPE NCC | PL | 17th Mar 2015 |
| 185.1.43.0/24 | 256 | RIPE NCC | AT | 1st Apr 2015 |
| 185.1.44.0/24 | 256 | RIPE NCC |  ME | 26th May 2015 |
| 185.1.45.0/24 | 256 | RIPE NCC |  MD | 26th May 2015 |
| 185.1.46.0/24 | 256 | RIPE NCC | DE | 30th Jun 2015 |
| 185.1.47.0/24 | 256 | RIPE NCC | DE | 3rd Aug 2015 |
| 185.1.48.0/24 | 256 | RIPE NCC | DE | 3rd Aug 2015 |
| 185.1.50.0/23 | 512 | RIPE NCC | UA | 1st Oct 2015 |
| 185.1.53.0/24 | 256 | RIPE NCC | GB | 13th Oct 2015 |
| 185.1.54.0/24 | 256 | RIPE NCC | DE | 20th Oct 2015 |
| 185.1.55.0/24 | 256 | RIPE NCC |  NO | 21st Dec 2015 |
| 185.1.57.0/24 | 256 | RIPE NCC |  DK | 4th Nov 2015 |
| 185.1.58.0/24 | 256 | RIPE NCC |  SA | 2nd Feb 2021 |
| 185.1.59.0/24 | 256 | RIPE NCC |  CH | 19th Sept 2018 |
| 185.1.60.0/24 | 256 | RIPE NCC | DE | 18th Nov 2015 |
| 185.1.61.0/24 | 256 | RIPE NCC | DE | 7th Dec 2015 |
| 185.1.62.0/23 | 512 | RIPE NCC | UA | 18th Dec 2015 |
| 185.1.64.0/24 | 256 | RIPE NCC | RU | 25th Jan 2016 |
| 185.1.65.0/24 | 256 | RIPE NCC | NO | 25th Jan 2016 |
| 185.1.66.0/24 | 256 | RIPE NCC | UA | 5th Nov 2020 |
| 185.1.67.0/24 | 256 | RIPE NCC | RU | 24th Feb 2016 |
| 185.1.68.0/24 | 256 | RIPE NCC |  ES | 17th Sept 2021 |
| 185.1.70.0/24 | 256 | RIPE NCC | RS | 7th Apr 2016 |
| 185.1.71.0/24 | 256 | RIPE NCC | GB | 17th May 2016 |
| 185.1.72.0/24 | 256 | RIPE NCC | RU | 31st May 2021 |
| 185.1.73.0/24 | 256 | RIPE NCC |  AL | 27th May 2016 |
| 185.1.74.0/24 | 256 | RIPE NCC | DE | 6th Jun 2016 |
| 185.1.75.0/24 | 256 | RIPE NCC | PL | 7th Jun 2016 |
| 185.1.76.0/24 | 256 | RIPE NCC | RU | 11th Jul 2016 |
| 185.1.77.0/24 | 256 | RIPE NCC |  IR | 26th Jul 2016 |