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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 unannounced space registered through RIPE NCC, largest first.
Unannounced blocks registered through RIPE NCC
24,902 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 78.41.248.0/21 | 2k | RIPE NCC |  FR | 27th Aug 2007 |
| 78.41.32.0/21 | 2k | RIPE NCC |  RU | 30th Jul 2007 |
| 78.41.56.0/24 | 256 | RIPE NCC |  UA | 17th Jan 2025 |
| 79.108.0.0/18 | 16.4k | RIPE NCC |  ES | 3rd Dec 2007 |
| 79.108.112.0/22 | 1k | RIPE NCC | ES | 3rd Dec 2007 |
| 79.108.116.0/23 | 512 | RIPE NCC | ES | 3rd Dec 2007 |
| 79.108.118.0/24 | 256 | RIPE NCC | ES | 3rd Dec 2007 |
| 79.108.119.0/24 | 256 | RIPE NCC | UA | 3rd Dec 2007 |
| 79.108.120.0/21 | 2k | RIPE NCC | ES | 3rd Dec 2007 |
| 79.108.128.0/21 | 2k | RIPE NCC |  IT | 3rd Dec 2007 |
| 79.108.227.0/24 | 256 | RIPE NCC |  AE | 3rd Dec 2007 |
| 79.108.64.0/19 | 8.2k | RIPE NCC | ES | 3rd Dec 2007 |
| 79.108.96.0/20 | 4.1k | RIPE NCC | ES | 3rd Dec 2007 |
| 79.110.16.0/20 | 4.1k | RIPE NCC | UA | 4th Mar 2008 |
| 79.110.160.0/22 | 1k | RIPE NCC |  GB | 10th Aug 2018 |
| 79.110.172.0/22 | 1k | RIPE NCC | GB | 10th Aug 2018 |
| 79.110.226.0/24 | 256 | RIPE NCC | RU | 23rd Sept 2021 |
| 79.110.231.0/24 | 256 | RIPE NCC |  DE | 23rd Sept 2021 |
| 79.110.234.0/24 | 256 | RIPE NCC |  TR | 23rd Sept 2021 |
| 79.132.195.0/24 | 256 | RIPE NCC |  IQ | 2nd Oct 2007 |
| 79.135.100.0/22 | 1k | RIPE NCC | GB | 31st Oct 2007 |
| 79.137.133.0/24 | 256 | RIPE NCC | RU | 18th Oct 2007 |
| 79.139.96.0/20 | 4.1k | RIPE NCC |  PL | 22nd Oct 2007 |
| 79.141.224.0/20 | 4.1k | RIPE NCC |  SY | 26th Oct 2007 |
| 79.142.176.0/22 | 1k | RIPE NCC |  BE | 13th Aug 2018 |
| 79.143.140.0/22 | 1k | RIPE NCC | DE | 28th Aug 2019 |
| 79.143.48.0/20 | 4.1k | RIPE NCC |  AT | 20th Nov 2007 |
| 79.170.104.0/21 | 2k | RIPE NCC |  BY | 26th Sept 2007 |
| 79.170.168.0/21 | 2k | RIPE NCC | TR | 1st Oct 2007 |
| 79.170.192.0/24 | 256 | RIPE NCC | GB | 2nd Oct 2007 |
| 79.170.195.0/24 | 256 | RIPE NCC |  IL | 2nd Oct 2007 |
| 79.170.200.0/21 | 2k | RIPE NCC |  US | 3rd Oct 2007 |
| 79.170.232.0/21 | 2k | RIPE NCC | FR | 5th Oct 2007 |
| 79.170.56.0/21 | 2k | RIPE NCC | FR | 25th Sept 2007 |
| 79.171.114.0/24 | 256 | RIPE NCC | RU | 12th Oct 2007 |
| 79.171.168.0/23 | 512 | RIPE NCC | RU | 7th Oct 2008 |
| 79.171.170.0/23 | 512 | RIPE NCC | RU | 7th Oct 2008 |
| 79.171.184.0/21 | 2k | RIPE NCC |  CZ | 17th Oct 2007 |
| 79.171.192.0/21 | 2k | RIPE NCC |  NL | 17th Oct 2007 |
| 79.171.200.0/21 | 2k | RIPE NCC | DE | 17th Oct 2007 |
| 79.171.24.0/21 | 2k | RIPE NCC | ES | 30th Jan 2008 |
| 79.174.0.0/23 | 512 | RIPE NCC | DE | 4th Oct 2018 |
| 79.174.176.0/21 | 2k | RIPE NCC |  NO | 9th Aug 2012 |
| 79.174.96.0/19 | 8.2k | RIPE NCC | AT | 16th Jun 2008 |
| 79.64.0.0/15 | 131k | RIPE NCC |  SE | 19th Jun 2007 |
| 79.98.248.0/21 | 2k | RIPE NCC | RU | 17th Jan 2011 |
| 79.98.80.0/21 | 2k | RIPE NCC | GB | 29th Oct 2007 |
| 79.99.140.0/22 | 1k | RIPE NCC | AT | 22nd Nov 2007 |
| 79.99.152.0/21 | 2k | RIPE NCC |  FI | 27th Nov 2007 |
| 80.104.0.0/15 | 131k | RIPE NCC | IT | 17th Jul 2001 |