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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 |
|---|---|---|---|---|
| 185.7.248.0/22 | 1k | RIPE NCC |  DE | 25th Oct 2012 |
| 185.7.72.0/22 | 1k | RIPE NCC |  FR | 19th Oct 2012 |
| 185.7.8.0/22 | 1k | RIPE NCC |  BH | 17th Oct 2012 |
| 185.70.124.0/22 | 1k | RIPE NCC |  SE | 17th Sept 2014 |
| 185.70.160.0/23 | 512 | RIPE NCC |  SA | 18th Sept 2014 |
| 185.70.204.0/22 | 1k | RIPE NCC | DE | 19th Sept 2014 |
| 185.70.228.0/22 | 1k | RIPE NCC |  AT | 22nd Sept 2014 |
| 185.70.32.0/22 | 1k | RIPE NCC |  GB | 15th Sept 2014 |
| 185.70.4.0/22 | 1k | RIPE NCC |  NL | 12th Sept 2014 |
| 185.71.160.0/22 | 1k | RIPE NCC |  IE | 30th Sept 2014 |
| 185.71.188.0/22 | 1k | RIPE NCC | FR | 1st Oct 2014 |
| 185.71.248.0/22 | 1k | RIPE NCC | DE | 2nd Oct 2014 |
| 185.72.103.0/24 | 256 | RIPE NCC |  US | 17th Jan 2025 |
| 185.72.124.0/22 | 1k | RIPE NCC | NL | 7th Oct 2014 |
| 185.72.128.0/22 | 1k | RIPE NCC | SE | 7th Oct 2014 |
| 185.72.156.0/22 | 1k | RIPE NCC |  PL | 8th Oct 2014 |
| 185.72.180.0/22 | 1k | RIPE NCC | NL | 8th Oct 2014 |
| 185.72.248.0/22 | 1k | RIPE NCC | FR | 13th Oct 2014 |
| 185.72.48.0/22 | 1k | RIPE NCC |  UA | 3rd Oct 2014 |
| 185.73.144.0/22 | 1k | RIPE NCC |  HR | 24th Jan 2018 |
| 185.73.236.0/22 | 1k | RIPE NCC |  BG | 21st Oct 2014 |
| 185.73.87.0/24 | 256 | RIPE NCC |  UZ | 23rd Jun 2025 |
| 185.74.12.0/22 | 1k | RIPE NCC | DE | 22nd Oct 2014 |
| 185.74.176.0/22 | 1k | RIPE NCC | GB | 24th Oct 2014 |
| 185.74.220.0/24 | 256 | RIPE NCC |  FI | 26th Sept 2022 |
| 185.74.28.0/22 | 1k | RIPE NCC |  CH | 22nd Oct 2014 |
| 185.74.92.0/22 | 1k | RIPE NCC |  GE | 23rd Oct 2014 |
| 185.75.100.0/22 | 1k | RIPE NCC | US | 30th Oct 2014 |
| 185.75.112.0/22 | 1k | RIPE NCC | NL | 30th Oct 2014 |
| 185.75.188.0/24 | 256 | RIPE NCC |  RU | 3rd Nov 2014 |
| 185.75.190.0/24 | 256 | RIPE NCC | RU | 3rd Nov 2014 |
| 185.75.191.0/24 | 256 | RIPE NCC | RU | 3rd Nov 2014 |
| 185.75.200.0/22 | 1k | RIPE NCC |  ES | 3rd Nov 2014 |
| 185.75.228.0/22 | 1k | RIPE NCC | DE | 4th Nov 2014 |
| 185.75.24.0/22 | 1k | RIPE NCC | DE | 28th Oct 2014 |
| 185.76.116.0/22 | 1k | RIPE NCC | DE | 10th Nov 2014 |
| 185.76.172.0/22 | 1k | RIPE NCC | DE | 11th Nov 2014 |
| 185.76.184.0/22 | 1k | RIPE NCC | GB | 11th Nov 2014 |
| 185.76.196.0/22 | 1k | RIPE NCC |  TR | 12th Nov 2014 |
| 185.77.0.0/24 | 256 | RIPE NCC | CH | 13th Nov 2014 |
| 185.77.112.0/22 | 1k | RIPE NCC | FR | 18th Nov 2014 |
| 185.77.152.0/22 | 1k | RIPE NCC | GB | 19th Nov 2014 |
| 185.77.16.0/22 | 1k | RIPE NCC | RU | 14th Nov 2014 |
| 185.77.21.0/24 | 256 | RIPE NCC |  IR | 30th Apr 2025 |
| 185.77.22.0/24 | 256 | RIPE NCC | DE | 30th Apr 2025 |
| 185.77.224.0/22 | 1k | RIPE NCC | US | 4th Jul 2019 |
| 185.77.23.0/24 | 256 | RIPE NCC | DE | 30th Apr 2025 |
| 185.77.231.0/24 | 256 | RIPE NCC | RU | 20th Nov 2014 |
| 185.78.108.0/22 | 1k | RIPE NCC | RU | 24th Nov 2014 |
| 185.78.196.0/22 | 1k | RIPE NCC | NL | 25th Nov 2014 |