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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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
84,650 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 89.191.230.0/24 | 256 | RIPE NCC |  RU | 22nd Jun 2006 |
| 89.191.231.0/24 | 256 | RIPE NCC | RU | 22nd Jun 2006 |
| 89.191.233.0/24 | 256 | RIPE NCC | RU | 22nd Jun 2006 |
| 89.191.235.0/24 | 256 | RIPE NCC | RU | 22nd Jun 2006 |
| 89.200.128.0/21 | 2k | RIPE NCC |  GB | 13th Apr 2006 |
| 89.200.152.0/21 | 2k | RIPE NCC |  PL | 22nd May 2006 |
| 89.200.244.0/24 | 256 | RIPE NCC |  IT | 25th Aug 2006 |
| 89.207.129.0/24 | 256 | RIPE NCC |  NL | 5th Dec 2008 |
| 89.207.132.0/24 | 256 | RIPE NCC | NL | 5th Dec 2008 |
| 89.207.133.0/24 | 256 | RIPE NCC | NL | 5th Dec 2008 |
| 89.207.134.0/23 | 512 | RIPE NCC | NL | 5th Dec 2008 |
| 89.207.154.0/24 | 256 | RIPE NCC |  BE | 18th Sept 2023 |
| 89.207.156.0/24 | 256 | RIPE NCC |  DE | 7th Jan 2025 |
| 89.207.158.0/24 | 256 | RIPE NCC | RU | 3rd Oct 2023 |
| 89.207.159.0/24 | 256 | RIPE NCC |  LR | 5th Oct 2023 |
| 89.207.208.0/21 | 2k | RIPE NCC | GB | 11th Jul 2006 |
| 89.207.32.0/21 | 2k | RIPE NCC | RU | 20th May 2009 |
| 89.207.40.0/21 | 2k | RIPE NCC | RU | 7th Jun 2006 |
| 89.207.96.0/21 | 2k | RIPE NCC | RU | 15th Jun 2006 |
| 89.208.123.0/24 | 256 | RIPE NCC |  KZ | 18th Apr 2006 |
| 89.213.0.0/21 | 2k | RIPE NCC | GB | 9th Jun 2006 |
| 89.219.4.0/22 | 1k | RIPE NCC | KZ | 5th Jul 2006 |
| 89.22.51.0/24 | 256 | RIPE NCC |  SE | 13th Sept 2012 |
| 89.22.8.0/21 | 2k | RIPE NCC |  ES | 11th Jul 2011 |
| 89.221.144.0/20 | 4.1k | RIPE NCC | IT | 6th Oct 2006 |
| 89.221.200.0/23 | 512 | RIPE NCC | RU | 9th Oct 2006 |
| 89.221.202.0/24 | 256 | RIPE NCC | RU | 9th Oct 2006 |
| 89.221.224.0/23 | 512 | RIPE NCC |  MD | 11th Oct 2006 |
| 89.221.72.0/21 | 2k | RIPE NCC |  EE | 26th Sept 2006 |
| 89.223.13.0/24 | 256 | RIPE NCC | RU | 19th Sept 2006 |
| 89.223.21.0/24 | 256 | RIPE NCC | RU | 19th Sept 2006 |
| 89.23.126.0/24 | 256 | RIPE NCC | RU | 31st Oct 2023 |
| 89.248.69.0/24 | 256 | RIPE NCC |  SI | 20th Aug 2021 |
| 89.248.71.0/24 | 256 | RIPE NCC |  CY | 20th Aug 2021 |
| 89.249.32.0/21 | 2k | RIPE NCC |  CH | 18th Jul 2006 |
| 89.249.50.0/24 | 256 | RIPE NCC | RU | 19th Jul 2006 |
| 89.25.64.0/21 | 2k | RIPE NCC |  BG | 26th May 2006 |
| 89.25.72.0/22 | 1k | RIPE NCC | BG | 26th May 2006 |
| 89.251.4.0/22 | 1k | RIPE NCC | GB | 10th Sept 2019 |
| 89.254.0.0/21 | 2k | RIPE NCC |  NO | 30th Aug 2006 |
| 89.28.208.0/21 | 2k | RIPE NCC |  FI | 3rd Aug 2006 |
| 89.31.208.0/23 | 512 | RIPE NCC | GB | 22nd Sept 2006 |
| 89.32.154.0/23 | 512 | RIPE NCC |  RO | 29th Nov 2005 |
| 89.32.168.0/23 | 512 | RIPE NCC | IT | 29th Nov 2005 |
| 89.32.198.0/23 | 512 | RIPE NCC | RO | 29th Nov 2005 |
| 89.32.201.0/24 | 256 | RIPE NCC |  TR | 29th Nov 2005 |
| 89.32.205.0/24 | 256 | RIPE NCC | TR | 29th Nov 2005 |
| 89.32.206.0/24 | 256 | RIPE NCC | RO | 29th Nov 2005 |
| 89.32.42.0/24 | 256 | RIPE NCC | NL | 29th Nov 2005 |
| 89.32.56.0/21 | 2k | RIPE NCC | MD | 29th Nov 2005 |