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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 |
|---|---|---|---|---|
| 185.108.184.0/22 | 1k | RIPE NCC |  DE | 10th Jul 2015 |
| 185.108.236.0/22 | 1k | RIPE NCC |  FR | 13th Jul 2015 |
| 185.108.44.0/23 | 512 | RIPE NCC |  NO | 8th Jul 2015 |
| 185.108.46.0/23 | 512 | RIPE NCC |  GB | 8th Jul 2015 |
| 185.108.52.0/22 | 1k | RIPE NCC | FR | 8th Jul 2015 |
| 185.108.72.0/22 | 1k | RIPE NCC | DE | 8th Jul 2015 |
| 185.109.128.0/22 | 1k | RIPE NCC |  IR | 16th Jul 2015 |
| 185.109.156.0/22 | 1k | RIPE NCC | DE | 16th Jul 2015 |
| 185.109.200.0/22 | 1k | RIPE NCC | FR | 17th Jul 2015 |
| 185.109.224.0/22 | 1k | RIPE NCC |  NL | 17th Jul 2015 |
| 185.109.228.0/22 | 1k | RIPE NCC | GB | 17th Jul 2015 |
| 185.109.36.0/22 | 1k | RIPE NCC |  CH | 14th Jul 2015 |
| 185.109.49.0/24 | 256 | RIPE NCC | DE | 27th May 2022 |
| 185.11.112.0/22 | 1k | RIPE NCC | NO | 28th Nov 2012 |
| 185.11.181.0/24 | 256 | RIPE NCC | NO | 29th Nov 2012 |
| 185.11.182.0/23 | 512 | RIPE NCC | NO | 29th Nov 2012 |
| 185.11.240.0/22 | 1k | RIPE NCC | GB | 30th Nov 2012 |
| 185.11.61.0/24 | 256 | RIPE NCC |  HK | 25th Jan 2022 |
| 185.110.148.0/22 | 1k | RIPE NCC | NO | 24th Jul 2015 |
| 185.110.220.0/22 | 1k | RIPE NCC | CH | 27th Jul 2015 |
| 185.112.180.0/22 | 1k | RIPE NCC | DE | 29th Apr 2019 |
| 185.112.20.0/22 | 1k | RIPE NCC |  RS | 4th Aug 2015 |
| 185.112.220.0/22 | 1k | RIPE NCC | GB | 11th Aug 2015 |
| 185.112.44.0/22 | 1k | RIPE NCC | NL | 4th Aug 2015 |
| 185.112.75.0/24 | 256 | RIPE NCC |  RU | 21st Feb 2020 |
| 185.112.8.0/22 | 1k | RIPE NCC | CH | 3rd Aug 2015 |
| 185.113.16.0/22 | 1k | RIPE NCC | GB | 12th Aug 2015 |
| 185.113.220.0/23 | 512 | RIPE NCC |  TR | 19th Aug 2015 |
| 185.113.8.0/24 | 256 | RIPE NCC |  AM | 7th Mar 2023 |
| 185.113.88.0/22 | 1k | RIPE NCC | DE | 13th Aug 2015 |
| 185.114.12.0/22 | 1k | RIPE NCC | DE | 19th Aug 2015 |
| 185.114.192.0/24 | 256 | RIPE NCC | TR | 26th Aug 2015 |
| 185.114.194.0/24 | 256 | RIPE NCC | TR | 26th Aug 2015 |
| 185.114.225.0/24 | 256 | RIPE NCC |  AT | 26th Aug 2015 |
| 185.114.24.0/22 | 1k | RIPE NCC | NL | 20th Aug 2015 |
| 185.114.36.0/22 | 1k | RIPE NCC | DE | 21st Aug 2015 |
| 185.114.4.0/22 | 1k | RIPE NCC | FR | 19th Aug 2015 |
| 185.114.40.0/22 | 1k | RIPE NCC | DE | 21st Aug 2015 |
| 185.115.124.0/22 | 1k | RIPE NCC | AT | 1st Sept 2015 |
| 185.115.128.0/22 | 1k | RIPE NCC | AT | 1st Sept 2015 |
| 185.115.16.0/22 | 1k | RIPE NCC |  FI | 27th Aug 2015 |
| 185.115.188.0/22 | 1k | RIPE NCC | FR | 3rd Sept 2015 |
| 185.115.20.0/24 | 256 | RIPE NCC |  HU | 27th Aug 2015 |
| 185.115.200.0/22 | 1k | RIPE NCC | GB | 3rd Sept 2015 |
| 185.115.206.0/24 | 256 | RIPE NCC | AT | 25th Jan 2022 |
| 185.115.21.0/24 | 256 | RIPE NCC | HU | 27th Aug 2015 |
| 185.115.22.0/23 | 512 | RIPE NCC | HU | 27th Aug 2015 |
| 185.115.224.0/22 | 1k | RIPE NCC |  IL | 4th Sept 2015 |
| 185.115.248.0/22 | 1k | RIPE NCC | NO | 4th Sept 2015 |
| 185.115.56.0/22 | 1k | RIPE NCC |  HR | 28th Aug 2015 |