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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 |
|---|---|---|---|---|
| 185.121.252.0/22 | 1k | RIPE NCC |  SA | 19th Oct 2015 |
| 185.121.64.0/22 | 1k | RIPE NCC |  SK | 13th Oct 2015 |
| 185.121.72.0/22 | 1k | RIPE NCC |  RU | 13th Oct 2015 |
| 185.121.8.0/22 | 1k | RIPE NCC |  NL | 12th Oct 2015 |
| 185.122.20.0/22 | 1k | RIPE NCC | NL | 19th Oct 2015 |
| 185.122.204.0/24 | 256 | RIPE NCC | RU | 25th Jan 2022 |
| 185.122.28.0/22 | 1k | RIPE NCC | RU | 19th Oct 2015 |
| 185.122.4.0/22 | 1k | RIPE NCC |  DE | 19th Oct 2015 |
| 185.122.56.0/22 | 1k | RIPE NCC |  AT | 20th Oct 2015 |
| 185.123.132.0/22 | 1k | RIPE NCC |  FI | 27th Oct 2015 |
| 185.123.148.0/22 | 1k | RIPE NCC |  OM | 27th Oct 2015 |
| 185.123.224.0/22 | 1k | RIPE NCC | DE | 28th Oct 2015 |
| 185.123.28.0/22 | 1k | RIPE NCC |  HU | 22nd Feb 2018 |
| 185.123.80.0/22 | 1k | RIPE NCC |  GB | 27th Oct 2015 |
| 185.123.96.0/22 | 1k | RIPE NCC | GB | 27th Oct 2015 |
| 185.124.132.0/22 | 1k | RIPE NCC |  CH | 3rd Nov 2015 |
| 185.124.236.0/22 | 1k | RIPE NCC |  FR | 4th Nov 2015 |
| 185.124.48.0/22 | 1k | RIPE NCC | DE | 30th Oct 2015 |
| 185.124.66.0/24 | 256 | RIPE NCC | DE | 25th Jan 2022 |
| 185.124.67.0/24 | 256 | RIPE NCC | DE | 25th Jan 2022 |
| 185.125.136.0/22 | 1k | RIPE NCC |  EE | 22nd Feb 2018 |
| 185.125.140.0/24 | 256 | RIPE NCC | RU | 22nd Jan 2026 |
| 185.125.142.0/24 | 256 | RIPE NCC |  US | 22nd Jan 2026 |
| 185.125.196.0/22 | 1k | RIPE NCC | CH | 11th Nov 2015 |
| 185.126.120.0/22 | 1k | RIPE NCC | GB | 16th Nov 2015 |
| 185.126.154.0/23 | 512 | RIPE NCC | DE | 16th Nov 2015 |
| 185.126.188.0/22 | 1k | RIPE NCC |  PL | 16th Nov 2015 |
| 185.127.12.0/22 | 1k | RIPE NCC | NL | 17th Nov 2015 |
| 185.127.200.0/22 | 1k | RIPE NCC | DE | 31st Oct 2018 |
| 185.127.232.0/22 | 1k | RIPE NCC |  IR | 23rd Nov 2015 |
| 185.127.248.0/22 | 1k | RIPE NCC | GB | 24th Nov 2015 |
| 185.127.32.0/22 | 1k | RIPE NCC |  IT | 18th Nov 2015 |
| 185.127.42.0/24 | 256 | RIPE NCC |  TR | 22nd Jan 2026 |
| 185.127.88.0/22 | 1k | RIPE NCC |  DK | 19th Nov 2015 |
| 185.128.126.0/23 | 512 | RIPE NCC | DE | 26th Nov 2015 |
| 185.128.4.0/22 | 1k | RIPE NCC | RU | 1st Dec 2015 |
| 185.128.44.0/22 | 1k | RIPE NCC | DE | 24th Nov 2015 |
| 185.129.140.0/22 | 1k | APNIC |  LA | 2nd Dec 2015 |
| 185.129.160.0/22 | 1k | RIPE NCC | AT | 23rd Feb 2018 |
| 185.129.224.0/22 | 1k | RIPE NCC |  ES | 3rd Dec 2015 |
| 185.129.44.0/22 | 1k | RIPE NCC | FR | 30th Nov 2015 |
| 185.13.100.0/22 | 1k | RIPE NCC | FR | 14th Dec 2012 |
| 185.13.196.0/22 | 1k | RIPE NCC |  AM | 18th Dec 2012 |
| 185.13.204.0/22 | 1k | RIPE NCC | GB | 18th Dec 2012 |
| 185.13.68.0/22 | 1k | RIPE NCC | DE | 13th Dec 2012 |
| 185.130.100.0/24 | 256 | RIPE NCC | NL | 25th Sept 2025 |
| 185.130.101.0/24 | 256 | RIPE NCC | IR | 25th Sept 2025 |
| 185.130.103.0/24 | 256 | RIPE NCC | ES | 29th Sept 2025 |
| 185.130.108.0/22 | 1k | RIPE NCC | PL | 8th Dec 2015 |
| 185.130.120.0/22 | 1k | RIPE NCC |  UA | 8th Dec 2015 |