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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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
84,738 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 93.157.224.0/21 | 2k | RIPE NCC |  KG | 10th Sept 2008 |
| 93.174.168.0/21 | 2k | RIPE NCC |  IE | 26th Jun 2008 |
| 93.174.248.0/21 | 2k | RIPE NCC |  GB | 1st Jul 2008 |
| 93.174.56.0/21 | 2k | RIPE NCC |  RU | 19th Jun 2008 |
| 93.175.156.0/23 | 512 | RIPE NCC |  NL | 16th Jul 2008 |
| 93.175.158.0/24 | 256 | RIPE NCC | NL | 16th Jul 2008 |
| 93.175.176.0/20 | 4.1k | RIPE NCC | NL | 21st Jul 2008 |
| 93.177.107.0/24 | 256 | RIPE NCC |  SC | 31st Jan 2022 |
| 93.177.81.0/24 | 256 | RIPE NCC |  FR | 9th Jun 2020 |
| 93.179.32.0/19 | 8.2k | RIPE NCC |  SE | 9th Apr 2008 |
| 93.180.130.0/24 | 256 | RIPE NCC |  HU | 10th Jan 2019 |
| 93.180.138.0/23 | 512 | RIPE NCC | RU | 6th Sept 2012 |
| 93.180.140.0/22 | 1k | RIPE NCC | RU | 6th Sept 2012 |
| 93.181.128.0/18 | 16.4k | RIPE NCC |  PL | 29th Apr 2008 |
| 93.183.100.0/22 | 1k | RIPE NCC |  CZ | 20th May 2008 |
| 93.183.112.0/21 | 2k | RIPE NCC | RU | 20th May 2008 |
| 93.183.120.0/22 | 1k | RIPE NCC | CZ | 20th May 2008 |
| 93.184.168.0/21 | 2k | RIPE NCC | RU | 29th May 2008 |
| 93.184.208.0/20 | 4.1k | RIPE NCC |  US | 2nd Jun 2008 |
| 93.187.108.0/24 | 256 | RIPE NCC | CZ | 16th Jul 2008 |
| 93.187.109.0/24 | 256 | RIPE NCC | NL | 16th Jul 2008 |
| 93.187.170.0/23 | 512 | RIPE NCC | GB | 22nd Jul 2008 |
| 93.187.69.0/24 | 256 | RIPE NCC |  DK | 12th Jan 2024 |
| 93.188.182.0/23 | 512 | RIPE NCC |  EE | 18th Apr 2008 |
| 93.188.184.0/22 | 1k | RIPE NCC | RU | 18th Apr 2008 |
| 93.189.172.0/23 | 512 | RIPE NCC |  DE | 2nd May 2008 |
| 93.189.192.0/21 | 2k | RIPE NCC |  SA | 5th May 2008 |
| 93.189.208.0/21 | 2k | RIPE NCC |  IT | 6th May 2008 |
| 93.189.224.0/24 | 256 | RIPE NCC |  BY | 10th Aug 2012 |
| 93.189.72.0/21 | 2k | RIPE NCC | RU | 24th Apr 2008 |
| 93.190.127.0/24 | 256 | RIPE NCC |  FI | 24th Aug 2021 |
| 93.190.186.0/24 | 256 | RIPE NCC | NL | 21st May 2008 |
| 93.190.188.0/23 | 512 | RIPE NCC | IE | 21st May 2008 |
| 93.190.190.0/24 | 256 | RIPE NCC | DE | 21st May 2008 |
| 93.190.32.0/22 | 1k | RIPE NCC | FR | 27th Jun 2018 |
| 93.72.0.0/15 | 131k | ARIN | US | 4th Mar 2024 |
| 93.74.0.0/16 | 65.5k | ARIN | US | 4th Mar 2024 |
| 93.88.48.0/20 | 4.1k | RIPE NCC |  UA | 13th Mar 2008 |
| 93.88.72.0/23 | 512 | RIPE NCC |  IR | 14th Mar 2008 |
| 93.89.12.0/22 | 1k | RIPE NCC | DE | 28th Mar 2008 |
| 93.90.144.0/20 | 4.1k | RIPE NCC | SE | 25th Apr 2008 |
| 93.92.144.0/21 | 2k | RIPE NCC | DE | 31st Jan 2008 |
| 93.92.168.0/21 | 2k | RIPE NCC |  ES | 4th Feb 2008 |
| 93.92.208.0/21 | 2k | RIPE NCC | US | 6th Feb 2008 |
| 93.92.40.0/21 | 2k | RIPE NCC | DE | 23rd Jan 2008 |
| 93.92.72.0/21 | 2k | RIPE NCC | IT | 25th Jan 2008 |
| 93.93.200.0/24 | 256 | RIPE NCC | ES | 23rd Aug 2021 |
| 93.93.203.0/24 | 256 | RIPE NCC | NL | 23rd Aug 2021 |
| 93.93.204.0/24 | 256 | RIPE NCC | IR | 23rd Aug 2021 |
| 93.93.96.0/21 | 2k | RIPE NCC |  NO | 15th Feb 2008 |