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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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
25,269 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 91.213.211.0/26 | 64 | RIPE NCC |  AE | 9th Apr 2026 |
| 91.213.211.128/26 | 64 | RIPE NCC |  NL | 3rd Jun 2026 |
| 91.213.211.192/26 | 64 | RIPE NCC |  OM | 6th Jul 2026 |
| 91.213.211.64/26 | 64 | RIPE NCC |  IL | 28th May 2026 |
| 91.213.214.0/24 | 256 | RIPE NCC |  US | 9th Sept 2009 |
| 91.213.216.0/24 | 256 | RIPE NCC |  GB | 14th Sept 2009 |
| 91.213.228.0/24 | 256 | RIPE NCC |  GR | 17th Sept 2009 |
| 91.213.236.0/24 | 256 | RIPE NCC |  FR | 22nd Sept 2009 |
| 91.213.250.0/24 | 256 | RIPE NCC |  SE | 25th Sept 2009 |
| 91.213.255.0/24 | 256 | RIPE NCC |  PL | 28th Sept 2009 |
| 91.213.3.0/24 | 256 | RIPE NCC | US | 10th Jun 2009 |
| 91.213.42.0/24 | 256 | RIPE NCC | GB | 2nd Jul 2009 |
| 91.213.45.0/24 | 256 | RIPE NCC | GB | 6th Jul 2009 |
| 91.213.47.0/24 | 256 | RIPE NCC |  NO | 7th Jul 2009 |
| 91.213.48.0/24 | 256 | RIPE NCC |  RU | 9th Dec 2024 |
| 91.213.63.0/24 | 256 | RIPE NCC | GB | 14th Jul 2009 |
| 91.213.66.0/24 | 256 | RIPE NCC | NO | 28th Mar 2011 |
| 91.213.72.0/24 | 256 | RIPE NCC | NL | 8th Nov 2019 |
| 91.213.73.0/26 | 64 | RIPE NCC | PL | 2nd Apr 2026 |
| 91.213.73.128/26 | 64 | RIPE NCC | PL | 2nd Apr 2026 |
| 91.213.73.192/26 | 64 | RIPE NCC | PL | 2nd Apr 2026 |
| 91.213.73.64/26 | 64 | RIPE NCC | PL | 2nd Apr 2026 |
| 91.213.86.0/24 | 256 | RIPE NCC |  RO | 23rd Jul 2009 |
| 91.213.9.0/24 | 256 | RIPE NCC |  HU | 12th Jun 2009 |
| 91.213.93.0/24 | 256 | RIPE NCC | NL | 8th Nov 2019 |
| 91.213.94.0/24 | 256 | RIPE NCC | NL | 8th Nov 2019 |
| 91.214.113.0/24 | 256 | RIPE NCC | FR | 2nd Jun 2009 |
| 91.214.120.0/23 | 512 | RIPE NCC | RU | 3rd Jun 2009 |
| 91.214.212.0/22 | 1k | RIPE NCC | RU | 29th Jun 2009 |
| 91.214.232.0/22 | 1k | RIPE NCC |  UA | 2nd Jul 2009 |
| 91.214.236.0/22 | 1k | RIPE NCC |  CY | 2nd Jul 2009 |
| 91.214.92.0/22 | 1k | RIPE NCC |  DE | 20th Apr 2018 |
| 91.214.96.0/22 | 1k | RIPE NCC | RU | 28th May 2009 |
| 91.215.100.0/22 | 1k | RIPE NCC | DE | 23rd Jul 2009 |
| 91.215.116.0/22 | 1k | RIPE NCC | DE | 28th Jul 2009 |
| 91.215.132.0/22 | 1k | RIPE NCC |  FI | 6th Aug 2009 |
| 91.215.168.0/22 | 1k | RIPE NCC | RU | 21st Aug 2009 |
| 91.215.212.0/22 | 1k | RIPE NCC | RU | 26th Aug 2009 |
| 91.215.228.0/22 | 1k | RIPE NCC | PL | 27th Aug 2009 |
| 91.215.240.0/22 | 1k | RIPE NCC |  AT | 1st Sept 2009 |
| 91.215.244.0/22 | 1k | RIPE NCC | RU | 1st Sept 2009 |
| 91.215.48.0/22 | 1k | RIPE NCC |  ES | 20th Apr 2018 |
| 91.215.84.0/24 | 256 | RIPE NCC | RU | 21st Jul 2009 |
| 91.216.100.0/24 | 256 | RIPE NCC | ES | 8th Nov 2019 |
| 91.216.105.0/24 | 256 | RIPE NCC | US | 19th May 2010 |
| 91.216.119.0/24 | 256 | RIPE NCC |  TR | 21st May 2010 |
| 91.216.131.0/24 | 256 | RIPE NCC | NL | 27th May 2010 |
| 91.216.132.0/24 | 256 | RIPE NCC | NL | 27th May 2010 |
| 91.216.135.0/24 | 256 | RIPE NCC | UA | 27th May 2010 |
| 91.216.137.0/24 | 256 | RIPE NCC | GB | 28th May 2010 |