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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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
24,902 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 185.52.96.0/22 | 1k | RIPE NCC |  CZ | 31st Mar 2014 |
| 185.53.200.0/22 | 1k | RIPE NCC |  RO | 14th Apr 2014 |
| 185.53.212.0/22 | 1k | RIPE NCC |  SE | 14th Apr 2014 |
| 185.53.248.0/24 | 256 | RIPE NCC |  AE | 12th Apr 2023 |
| 185.53.34.0/24 | 256 | RIPE NCC |  IQ | 4th Apr 2014 |
| 185.53.46.0/24 | 256 | RIPE NCC |  MD | 21st Jun 2021 |
| 185.53.48.0/22 | 1k | RIPE NCC |  NL | 7th Apr 2014 |
| 185.53.52.0/22 | 1k | RIPE NCC | AE | 8th Apr 2014 |
| 185.54.0.0/23 | 512 | RIPE NCC | CZ | 15th Apr 2014 |
| 185.54.140.0/22 | 1k | RIPE NCC |  SK | 22nd Apr 2014 |
| 185.54.196.0/22 | 1k | RIPE NCC | SE | 23rd Apr 2014 |
| 185.54.218.0/23 | 512 | RIPE NCC | NL | 23rd Apr 2014 |
| 185.54.240.0/22 | 1k | RIPE NCC |  DE | 23rd Apr 2014 |
| 185.54.8.0/22 | 1k | RIPE NCC |  FR | 15th Apr 2014 |
| 185.55.184.0/22 | 1k | RIPE NCC | IQ | 28th Apr 2014 |
| 185.55.192.0/22 | 1k | RIPE NCC | DE | 28th Apr 2014 |
| 185.55.220.0/22 | 1k | RIPE NCC | DE | 28th Apr 2014 |
| 185.55.44.0/24 | 256 | RIPE NCC |  AL | 24th Apr 2014 |
| 185.55.45.0/24 | 256 | RIPE NCC | AL | 24th Apr 2014 |
| 185.55.46.0/23 | 512 | RIPE NCC | AL | 24th Apr 2014 |
| 185.55.52.0/22 | 1k | RIPE NCC |  GB | 24th Apr 2014 |
| 185.55.83.0/24 | 256 | RIPE NCC | GB | 16th Jan 2025 |
| 185.56.164.0/22 | 1k | RIPE NCC |  DK | 5th May 2014 |
| 185.56.196.0/22 | 1k | RIPE NCC |  SA | 6th May 2014 |
| 185.56.200.0/22 | 1k | RIPE NCC |  US | 6th May 2014 |
| 185.56.212.0/22 | 1k | RIPE NCC | SE | 7th May 2014 |
| 185.56.4.0/22 | 1k | RIPE NCC | GB | 29th Apr 2014 |
| 185.56.56.0/22 | 1k | RIPE NCC | DK | 30th Apr 2014 |
| 185.57.0.0/22 | 1k | RIPE NCC | DE | 8th May 2014 |
| 185.57.140.0/22 | 1k | RIPE NCC | NL | 14th May 2014 |
| 185.57.176.0/22 | 1k | RIPE NCC |  AT | 14th May 2014 |
| 185.57.200.0/22 | 1k | RIPE NCC |  IR | 16th May 2014 |
| 185.57.208.0/22 | 1k | RIPE NCC |  IT | 16th May 2014 |
| 185.57.25.0/24 | 256 | RIPE NCC | DE | 9th May 2014 |
| 185.57.26.0/23 | 512 | RIPE NCC | DE | 9th May 2014 |
| 185.57.92.0/22 | 1k | RIPE NCC | GB | 13th May 2014 |
| 185.58.104.0/22 | 1k | RIPE NCC | IT | 20th May 2014 |
| 185.58.108.0/22 | 1k | RIPE NCC | DE | 21st May 2014 |
| 185.58.184.0/22 | 1k | RIPE NCC | FR | 23rd May 2014 |
| 185.58.236.0/22 | 1k | RIPE NCC | NL | 26th May 2014 |
| 185.59.176.0/22 | 1k | RIPE NCC | GB | 3rd Jun 2014 |
| 185.59.218.0/24 | 256 | RIPE NCC |  RU | 4th Jun 2014 |
| 185.59.236.0/22 | 1k | RIPE NCC |  NO | 4th Jun 2014 |
| 185.59.29.0/24 | 256 | RIPE NCC |  TR | 27th May 2014 |
| 185.59.88.0/22 | 1k | RIPE NCC |  PL | 28th May 2014 |
| 185.6.16.0/22 | 1k | RIPE NCC |  PS | 8th Oct 2012 |
| 185.60.100.0/22 | 1k | RIPE NCC |  HU | 6th Jun 2014 |
| 185.60.108.0/22 | 1k | RIPE NCC | FR | 10th Jun 2014 |
| 185.60.181.0/24 | 256 | RIPE NCC |  CH | 28th May 2026 |
| 185.60.183.0/24 | 256 | RIPE NCC | IT | 1st Jun 2026 |