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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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
85,108 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 185.190.200.0/22 | 1k | RIPE NCC |  IE | 20th Feb 2017 |
| 185.190.27.0/24 | 256 | RIPE NCC |  PL | 30th Jun 2021 |
| 185.190.32.0/22 | 1k | RIPE NCC |  CH | 15th Feb 2017 |
| 185.190.60.0/22 | 1k | RIPE NCC |  GB | 15th Feb 2017 |
| 185.190.89.0/24 | 256 | RIPE NCC |  CZ | 16th Sept 2020 |
| 185.191.112.0/22 | 1k | RIPE NCC |  UA | 22nd Feb 2017 |
| 185.191.128.0/22 | 1k | ARIN |  CA | 30th Jul 2019 |
| 185.191.146.0/24 | 256 | RIPE NCC |  DE | 23rd Feb 2017 |
| 185.191.147.0/24 | 256 | RIPE NCC |  FR | 23rd Feb 2017 |
| 185.191.152.0/22 | 1k | RIPE NCC | FR | 23rd Feb 2017 |
| 185.191.172.0/22 | 1k | RIPE NCC | UA | 10th Sept 2019 |
| 185.191.72.0/22 | 1k | RIPE NCC |  SA | 21st Feb 2017 |
| 185.191.80.0/22 | 1k | RIPE NCC | UA | 22nd Feb 2017 |
| 185.192.128.0/22 | 1k | RIPE NCC |  IS | 1st Mar 2017 |
| 185.192.132.0/22 | 1k | RIPE NCC |  NL | 1st Mar 2017 |
| 185.192.164.0/22 | 1k | RIPE NCC | GB | 2nd Mar 2017 |
| 185.192.200.0/22 | 1k | RIPE NCC | DE | 2nd Mar 2017 |
| 185.192.32.0/22 | 1k | RIPE NCC |  BE | 28th Feb 2017 |
| 185.192.4.0/22 | 1k | RIPE NCC |  GI | 27th Feb 2017 |
| 185.192.60.0/22 | 1k | RIPE NCC |  IT | 28th Feb 2017 |
| 185.192.92.0/22 | 1k | RIPE NCC | GB | 1st Mar 2017 |
| 185.193.132.0/22 | 1k | RIPE NCC |  AZ | 8th Mar 2017 |
| 185.193.192.0/22 | 1k | RIPE NCC |  AT | 9th Mar 2017 |
| 185.193.36.0/22 | 1k | RIPE NCC | AT | 6th Mar 2017 |
| 185.193.45.0/24 | 256 | RIPE NCC |  ES | 30th Jun 2021 |
| 185.193.46.0/24 | 256 | RIPE NCC |  RU | 30th Jun 2021 |
| 185.193.96.0/22 | 1k | RIPE NCC | GB | 7th Mar 2017 |
| 185.194.12.0/24 | 256 | RIPE NCC | CZ | 28th Sept 2020 |
| 185.194.13.0/24 | 256 | RIPE NCC | DE | 28th Sept 2020 |
| 185.194.132.0/22 | 1k | RIPE NCC | SA | 15th Mar 2017 |
| 185.194.149.0/24 | 256 | RIPE NCC | DE | 15th Mar 2017 |
| 185.194.16.0/22 | 1k | RIPE NCC | NL | 13th Mar 2017 |
| 185.194.180.0/22 | 1k | RIPE NCC | CH | 15th Mar 2017 |
| 185.194.196.0/23 | 512 | RIPE NCC |  TJ | 16th Mar 2017 |
| 185.195.112.0/22 | 1k | RIPE NCC | DE | 21st Mar 2017 |
| 185.195.156.0/22 | 1k | RIPE NCC |  SI | 21st Mar 2017 |
| 185.195.160.0/22 | 1k | RIPE NCC | GB | 21st Mar 2017 |
| 185.195.164.0/22 | 1k | RIPE NCC | IE | 21st Mar 2017 |
| 185.195.32.0/22 | 1k | RIPE NCC | SA | 17th Mar 2017 |
| 185.196.136.0/22 | 1k | RIPE NCC | CH | 27th Mar 2017 |
| 185.196.172.0/22 | 1k | RIPE NCC | NL | 28th Mar 2017 |
| 185.196.224.0/22 | 1k | RIPE NCC | DE | 29th Mar 2017 |
| 185.196.30.0/24 | 256 | RIPE NCC | FR | 11th Jan 2024 |
| 185.196.75.0/24 | 256 | RIPE NCC |  TR | 1st Jul 2024 |
| 185.197.183.0/24 | 256 | RIPE NCC | TR | 2nd Oct 2020 |
| 185.197.196.0/22 | 1k | RIPE NCC | TR | 3rd Apr 2017 |
| 185.197.204.0/22 | 1k | RIPE NCC |  IL | 4th Apr 2017 |
| 185.197.210.0/24 | 256 | RIPE NCC |  NO | 4th Apr 2017 |
| 185.198.15.0/24 | 256 | RIPE NCC | GB | 7th Jan 2025 |
| 185.198.212.0/22 | 1k | RIPE NCC | GB | 11th Apr 2017 |