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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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
84,783 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 89.117.129.0/24 | 256 | RIPE NCC |  LT | 3rd May 2006 |
| 89.117.137.0/24 | 256 | RIPE NCC | LT | 3rd May 2006 |
| 89.117.214.0/24 | 256 | RIPE NCC | LT | 3rd May 2006 |
| 89.117.219.0/24 | 256 | RIPE NCC | LT | 3rd May 2006 |
| 89.117.251.0/24 | 256 | RIPE NCC | LT | 3rd May 2006 |
| 89.117.68.0/24 | 256 | RIPE NCC | LT | 3rd May 2006 |
| 89.124.16.0/20 | 4.1k | RIPE NCC |  GR | 8th Mar 2006 |
| 89.124.224.0/20 | 4.1k | RIPE NCC |  US | 8th Mar 2006 |
| 89.124.248.0/23 | 512 | RIPE NCC |  AZ | 8th Mar 2006 |
| 89.124.252.0/24 | 256 | RIPE NCC |  IS | 8th Mar 2006 |
| 89.126.192.0/20 | 4.1k | RIPE NCC |  IE | 8th Mar 2006 |
| 89.126.240.0/21 | 2k | RIPE NCC | IE | 8th Mar 2006 |
| 89.127.0.0/17 | 32.8k | RIPE NCC | IE | 8th Mar 2006 |
| 89.145.176.0/21 | 2k | RIPE NCC |  CH | 13th Sept 2011 |
| 89.150.44.0/24 | 256 | RIPE NCC |  IT | 10th Mar 2010 |
| 89.150.64.0/18 | 16.4k | RIPE NCC |  DK | 6th Mar 2006 |
| 89.169.192.0/18 | 16.4k | RIPE NCC |  RU | 24th Feb 2006 |
| 89.17.48.0/24 | 256 | RIPE NCC | RU | 20th Jul 2006 |
| 89.17.50.0/24 | 256 | RIPE NCC | RU | 20th Jul 2006 |
| 89.17.64.0/19 | 8.2k | RIPE NCC |  FI | 20th Jul 2006 |
| 89.17.96.0/19 | 8.2k | RIPE NCC |  GB | 21st Jul 2006 |
| 89.18.52.0/22 | 1k | RIPE NCC |  HR | 3rd Aug 2006 |
| 89.18.80.0/21 | 2k | RIPE NCC | IE | 10th Aug 2006 |
| 89.187.198.0/23 | 512 | RIPE NCC |  CZ | 31st Aug 2011 |
| 89.187.224.0/19 | 8.2k | RIPE NCC |  PL | 28th Apr 2006 |
| 89.19.128.0/19 | 8.2k | RIPE NCC |  UA | 24th Aug 2006 |
| 89.191.224.0/24 | 256 | RIPE NCC | RU | 22nd Jun 2006 |
| 89.191.227.0/24 | 256 | RIPE NCC | RU | 22nd Jun 2006 |
| 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 |
| 89.207.0.0/21 | 2k | RIPE NCC | GB | 31st May 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 |
| 89.207.208.0/21 | 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 |
| 89.219.4.0/22 | 1k | RIPE NCC | KZ | 5th Jul 2006 |
| 89.22.8.0/21 | 2k | RIPE NCC |  ES | 11th Jul 2011 |