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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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
84,709 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 94.177.120.0/23 | 512 | RIPE NCC |  RO | 14th Aug 2008 |
| 94.177.128.0/24 | 256 | RIPE NCC |  NL | 14th Aug 2008 |
| 94.177.140.0/22 | 1k | RIPE NCC |  CH | 14th Aug 2008 |
| 94.177.148.0/23 | 512 | RIPE NCC | RO | 14th Aug 2008 |
| 94.177.27.0/24 | 256 | RIPE NCC |  US | 14th Aug 2008 |
| 94.177.30.0/23 | 512 | RIPE NCC | RO | 14th Aug 2008 |
| 94.177.66.0/24 | 256 | RIPE NCC | RO | 14th Aug 2008 |
| 94.177.80.0/21 | 2k | RIPE NCC | RO | 14th Aug 2008 |
| 94.185.0.0/18 | 16.4k | RIPE NCC |  OM | 13th Sept 2011 |
| 94.190.252.0/22 | 1k | RIPE NCC |  BG | 26th Aug 2008 |
| 94.198.171.0/24 | 256 | RIPE NCC |  AE | 29th Oct 2008 |
| 94.198.189.0/24 | 256 | RIPE NCC |  GB | 29th Oct 2008 |
| 94.198.191.0/24 | 256 | RIPE NCC | GB | 29th Oct 2008 |
| 94.198.72.0/21 | 2k | RIPE NCC |  IT | 22nd Oct 2008 |
| 94.199.2.0/24 | 256 | RIPE NCC | NL | 17th Aug 2023 |
| 94.199.240.0/21 | 2k | RIPE NCC |  DE | 21st Nov 2008 |
| 94.228.96.0/20 | 4.1k | RIPE NCC | DE | 17th Oct 2008 |
| 94.230.225.0/24 | 256 | RIPE NCC |  UZ | 30th Jan 2009 |
| 94.230.226.0/24 | 256 | RIPE NCC | UZ | 30th Jan 2009 |
| 94.230.228.0/22 | 1k | RIPE NCC | UZ | 30th Jan 2009 |
| 94.230.233.0/24 | 256 | RIPE NCC | UZ | 30th Jan 2009 |
| 94.230.234.0/23 | 512 | RIPE NCC | UZ | 30th Jan 2009 |
| 94.230.236.0/22 | 1k | RIPE NCC | UZ | 30th Jan 2009 |
| 94.231.208.0/22 | 1k | RIPE NCC |  PT | 28th Aug 2018 |
| 94.231.216.0/22 | 1k | RIPE NCC |  RU | 28th Aug 2018 |
| 94.231.38.0/23 | 512 | RIPE NCC |  UA | 27th Jan 2009 |
| 94.232.252.0/24 | 256 | RIPE NCC |  TR | 14th Jan 2025 |
| 94.232.255.0/24 | 256 | RIPE NCC |  SA | 14th Jan 2025 |
| 94.236.231.0/24 | 256 | RIPE NCC | BG | 21st Oct 2008 |
| 94.237.128.0/17 | 32.8k | RIPE NCC | RU | 24th Oct 2008 |
| 94.24.0.0/20 | 4.1k | RIPE NCC |  IR | 2nd Jun 2008 |
| 94.24.110.0/24 | 256 | RIPE NCC | RO | 2nd Jun 2008 |
| 94.24.64.0/21 | 2k | RIPE NCC | NL | 2nd Jun 2008 |
| 94.244.192.0/18 | 16.4k | RIPE NCC | CH | 5th Jun 2009 |
| 94.247.140.0/24 | 256 | RIPE NCC | RU | 24th Aug 2021 |
| 94.248.224.0/21 | 2k | RIPE NCC |  HU | 9th Sept 2008 |
| 94.26.45.0/24 | 256 | RIPE NCC | BG | 11th Jun 2008 |
| 94.36.0.0/15 | 131k | ARIN | US | 6th Apr 2023 |
| 94.38.0.0/15 | 131k | ARIN | US | 1st May 2023 |
| 95.111.133.0/24 | 256 | RIPE NCC | DE | 30th Dec 2008 |
| 95.111.135.0/24 | 256 | RIPE NCC |  FR | 30th Dec 2008 |
| 95.111.140.0/22 | 1k | RIPE NCC | FR | 30th Dec 2008 |
| 95.111.152.0/21 | 2k | RIPE NCC | FR | 30th Dec 2008 |
| 95.128.152.0/24 | 256 | RIPE NCC |  MD | 12th Jan 2024 |
| 95.128.193.0/24 | 256 | RIPE NCC | NL | 15th Jan 2024 |
| 95.128.195.0/24 | 256 | RIPE NCC | UA | 15th Jan 2024 |
| 95.128.196.0/24 | 256 | RIPE NCC | BG | 16th Jan 2024 |
| 95.128.197.0/24 | 256 | RIPE NCC | BG | 16th Jan 2024 |
| 95.128.198.0/24 | 256 | RIPE NCC | BG | 16th Jan 2024 |
| 95.129.184.0/21 | 2k | RIPE NCC | GB | 23rd Feb 2009 |