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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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
85,075 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 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 |
| 185.1.78.0/24 | 256 | RIPE NCC |  MD | 1st Aug 2016 |
| 185.1.8.0/24 | 256 | RIPE NCC | DE | 1st Nov 2012 |
| 185.1.80.0/24 | 256 | RIPE NCC |  IT | 22nd Aug 2016 |
| 185.1.81.0/24 | 256 | RIPE NCC | RU | 22nd Sept 2016 |
| 185.1.82.0/24 | 256 | RIPE NCC |  SE | 2nd Nov 2016 |
| 185.1.83.0/24 | 256 | RIPE NCC |  CZ | 31st Jan 2017 |
| 185.1.84.0/24 | 256 | RIPE NCC | UA | 8th Nov 2016 |
| 185.1.85.0/24 | 256 | RIPE NCC | UA | 8th Nov 2016 |
| 185.1.86.0/24 | 256 | RIPE NCC |  FI | 2nd Feb 2017 |
| 185.1.87.0/24 | 256 | RIPE NCC |  HR | 24th Feb 2017 |
| 185.1.88.0/24 | 256 | RIPE NCC | SE | 27th Feb 2017 |
| 185.1.89.0/24 | 256 | RIPE NCC |  FR | 14th Mar 2017 |
| 185.1.9.0/24 | 256 | RIPE NCC | PL | 28th Jan 2013 |
| 185.1.90.0/24 | 256 | RIPE NCC | ES | 12th May 2020 |
| 185.1.91.0/24 | 256 | RIPE NCC | PL | 7th Apr 2017 |
| 185.1.93.0/24 | 256 | RIPE NCC | CH | 26th Jun 2017 |
| 185.1.94.0/24 | 256 | RIPE NCC |  NL | 4th Jul 2017 |
| 185.1.95.0/24 | 256 | RIPE NCC |  TR | 25th Oct 2022 |
| 185.1.96.0/24 | 256 | RIPE NCC | UA | 15th Sept 2017 |
| 185.1.97.0/24 | 256 | RIPE NCC | IT | 27th Sept 2017 |
| 185.1.98.0/24 | 256 | RIPE NCC |  IQ | 28th Sept 2017 |
| 185.1.99.0/24 | 256 | RIPE NCC | UA | 9th Oct 2017 |
| 185.10.100.0/22 | 1k | RIPE NCC | GB | 16th Nov 2012 |
| 185.10.152.0/22 | 1k | RIPE NCC | RU | 20th Nov 2012 |
| 185.10.243.0/24 | 256 | RIPE NCC | TR | 23rd Jan 2026 |
| 185.10.28.0/22 | 1k | RIPE NCC | NO | 15th Nov 2012 |
| 185.10.32.0/22 | 1k | RIPE NCC | IT | 15th Nov 2012 |
| 185.10.76.0/22 | 1k | RIPE NCC | IT | 16th Nov 2012 |
| 185.10.92.0/24 | 256 | RIPE NCC | DE | 6th May 2026 |
| 185.10.95.0/24 | 256 | RIPE NCC | TR | 6th May 2026 |
| 185.100.100.0/24 | 256 | RIPE NCC | RU | 15th May 2015 |
| 185.100.116.0/22 | 1k | RIPE NCC | IT | 15th May 2015 |
| 185.100.120.0/22 | 1k | RIPE NCC | IT | 15th May 2015 |