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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 |
|---|---|---|---|---|
| 94.127.17.0/24 | 256 | RIPE NCC |  IR | 9th Jul 2026 |
| 94.127.19.0/24 | 256 | RIPE NCC |  IT | 9th Jul 2026 |
| 94.127.20.0/24 | 256 | RIPE NCC |  TR | 9th Jul 2026 |
| 94.127.21.0/24 | 256 | RIPE NCC |  AT | 9th Jul 2026 |
| 94.127.22.0/24 | 256 | RIPE NCC | TR | 9th Jul 2026 |
| 94.127.23.0/24 | 256 | RIPE NCC |  HR | 9th Jul 2026 |
| 94.127.240.0/21 | 2k | RIPE NCC |  RU | 17th Oct 2008 |
| 94.127.40.0/21 | 2k | RIPE NCC | IT | 7th Oct 2008 |
| 94.127.72.0/21 | 2k | RIPE NCC |  NL | 8th Oct 2008 |
| 94.131.2.0/23 | 512 | RIPE NCC |  MD | 23rd Jun 2008 |
| 94.131.20.0/24 | 256 | RIPE NCC | MD | 23rd Jun 2008 |
| 94.131.53.0/24 | 256 | RIPE NCC |  PA | 23rd Jun 2008 |
| 94.131.54.0/23 | 512 | RIPE NCC |  GI | 23rd Jun 2008 |
| 94.131.96.0/22 | 1k | RIPE NCC | MD | 23rd Jun 2008 |
| 94.136.172.0/22 | 1k | RIPE NCC |  DE | 22nd Jul 2008 |
| 94.136.180.0/22 | 1k | RIPE NCC | DE | 22nd Jul 2008 |
| 94.137.144.0/21 | 2k | RIPE NCC |  AL | 31st Jul 2008 |
| 94.138.152.0/21 | 2k | RIPE NCC | RU | 3rd Oct 2008 |
| 94.140.12.0/23 | 512 | RIPE NCC | AT | 28th Nov 2008 |
| 94.140.20.0/22 | 1k | RIPE NCC | AT | 28th Nov 2008 |
| 94.140.24.0/24 | 256 | RIPE NCC |  DK | 28th Nov 2008 |
| 94.140.26.0/23 | 512 | RIPE NCC | AT | 28th Nov 2008 |
| 94.141.100.0/22 | 1k | RIPE NCC |  AM | 11th Dec 2008 |
| 94.141.112.0/22 | 1k | RIPE NCC | RU | 11th Dec 2008 |
| 94.142.130.0/24 | 256 | RIPE NCC |  PL | 12th Jun 2020 |
| 94.143.112.0/21 | 2k | RIPE NCC |  FR | 16th Dec 2008 |
| 94.143.124.0/22 | 1k | RIPE NCC |  SE | 28th Jun 2018 |
| 94.143.225.0/24 | 256 | RIPE NCC |  LT | 25th Jan 2022 |
| 94.143.229.0/24 | 256 | RIPE NCC | DK | 25th Jan 2022 |
| 94.143.72.0/21 | 2k | RIPE NCC | NL | 12th Dec 2008 |
| 94.155.112.0/21 | 2k | RIPE NCC |  BG | 21st Aug 2008 |
| 94.155.120.0/22 | 1k | RIPE NCC | BG | 21st Aug 2008 |
| 94.155.64.0/20 | 4.1k | RIPE NCC | BG | 21st Aug 2008 |
| 94.155.80.0/22 | 1k | RIPE NCC | BG | 21st Aug 2008 |
| 94.155.84.0/22 | 1k | RIPE NCC | BG | 21st Aug 2008 |
| 94.156.164.0/23 | 512 | RIPE NCC | BG | 27th Aug 2008 |
| 94.156.188.0/24 | 256 | RIPE NCC | BG | 27th Aug 2008 |
| 94.156.69.0/24 | 256 | RIPE NCC | BG | 27th Aug 2008 |
| 94.156.70.0/23 | 512 | RIPE NCC | DE | 27th Aug 2008 |
| 94.156.88.0/22 | 1k | RIPE NCC | DE | 27th Aug 2008 |
| 94.158.224.0/20 | 4.1k | RIPE NCC | PL | 13th Jan 2009 |
| 94.176.130.0/24 | 256 | RIPE NCC |  RO | 14th Aug 2008 |
| 94.176.131.0/24 | 256 | RIPE NCC | IT | 14th Aug 2008 |
| 94.176.144.0/23 | 512 | RIPE NCC | RO | 14th Aug 2008 |
| 94.176.151.0/24 | 256 | RIPE NCC | IT | 14th Aug 2008 |
| 94.176.152.0/21 | 2k | RIPE NCC |  ES | 14th Aug 2008 |
| 94.176.162.0/24 | 256 | RIPE NCC | RO | 14th Aug 2008 |
| 94.176.220.0/22 | 1k | RIPE NCC | RO | 14th Aug 2008 |
| 94.177.100.0/22 | 1k | RIPE NCC |  CH | 14th Aug 2008 |
| 94.177.108.0/22 | 1k | RIPE NCC | RO | 14th Aug 2008 |