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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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
85,149 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 2a02:5540::/32 | 4.3B × /64 | RIPE NCC |  ES | 19th Sept 2012 |
| 2a02:55a0::/32 | 4.3B × /64 | RIPE NCC |  SA | 6th May 2014 |
| 2a02:55c0::/32 | 4.3B × /64 | RIPE NCC |  GB | 19th Sept 2012 |
| 2a02:55e0::/32 | 4.3B × /64 | RIPE NCC |  PL | 7th May 2014 |
| 2a02:5660::/32 | 4.3B × /64 | RIPE NCC | PL | 7th May 2014 |
| 2a02:56a0::/32 | 4.3B × /64 | RIPE NCC |  FR | 7th May 2014 |
| 2a02:56e0::/32 | 4.3B × /64 | RIPE NCC | GB | 8th May 2014 |
| 2a02:5700::/32 | 4.3B × /64 | RIPE NCC |  LB | 30th Jul 2015 |
| 2a02:5720::/32 | 4.3B × /64 | RIPE NCC |  MK | 8th May 2014 |
| 2a02:5780::/32 | 4.3B × /64 | RIPE NCC | GB | 15th Jul 2011 |
| 2a02:57a0::/32 | 4.3B × /64 | RIPE NCC | FR | 9th May 2014 |
| 2a02:57c0::/32 | 4.3B × /64 | RIPE NCC |  TR | 19th Sept 2012 |
| 2a02:5840::/32 | 4.3B × /64 | RIPE NCC |  RU | 19th Sept 2012 |
| 2a02:5860::/32 | 4.3B × /64 | RIPE NCC | GB | 9th May 2014 |
| 2a02:5880::/32 | 4.3B × /64 | RIPE NCC |  IT | 15th Jul 2011 |
| 2a02:588::/32 | 4.3B × /64 | RIPE NCC |  DE | 3rd Jul 2008 |
| 2a02:58::/32 | 4.3B × /64 | RIPE NCC |  NL | 15th Feb 2008 |
| 2a02:58c0::/32 | 4.3B × /64 | RIPE NCC | PL | 19th Sept 2012 |
| 2a02:5900::/29 | 34.4B × /64 | RIPE NCC |  CH | 16th Mar 2011 |
| 2a02:5920::/32 | 4.3B × /64 | RIPE NCC | TR | 12th May 2014 |
| 2a02:5980::/32 | 4.3B × /64 | RIPE NCC |  IE | 15th Jul 2011 |
| 2a02:59a0::/32 | 4.3B × /64 | RIPE NCC | GB | 12th May 2014 |
| 2a02:59c0::/32 | 4.3B × /64 | RIPE NCC | RU | 20th Sept 2012 |
| 2a02:5a20::/32 | 4.3B × /64 | RIPE NCC | DE | 13th May 2014 |
| 2a02:5a40::/32 | 4.3B × /64 | RIPE NCC | FR | 20th Sept 2012 |
| 2a02:5a60::/32 | 4.3B × /64 | RIPE NCC | RU | 13th May 2014 |
| 2a02:5b00::/32 | 4.3B × /64 | RIPE NCC | ES | 17th Mar 2011 |
| 2a02:5b60::/32 | 4.3B × /64 | RIPE NCC |  JO | 13th May 2014 |
| 2a02:5b80::/32 | 4.3B × /64 | RIPE NCC |  SK | 18th Jul 2011 |
| 2a02:5ba0::/32 | 4.3B × /64 | RIPE NCC | GB | 13th May 2014 |
| 2a02:5c00::/29 | 34.4B × /64 | RIPE NCC | PL | 3rd Aug 2015 |
| 2a02:5ce0::/32 | 4.3B × /64 | RIPE NCC | GB | 14th May 2014 |
| 2a02:5d20::/32 | 4.3B × /64 | RIPE NCC | PL | 14th May 2014 |
| 2a02:5d60::/32 | 4.3B × /64 | RIPE NCC | RU | 15th May 2014 |
| 2a02:5d80::/29 | 34.4B × /64 | RIPE NCC | GB | 18th Jul 2011 |
| 2a02:5da0::/32 | 4.3B × /64 | RIPE NCC |  NO | 15th May 2014 |
| 2a02:5e00::/32 | 4.3B × /64 | RIPE NCC | IE | 3rd Feb 2011 |
| 2a02:5e40::/32 | 4.3B × /64 | RIPE NCC | GB | 21st Sept 2012 |
| 2a02:5e80::/32 | 4.3B × /64 | RIPE NCC |  CZ | 18th Jul 2011 |
| 2a02:5ea0::/32 | 4.3B × /64 | RIPE NCC | ES | 15th May 2014 |
| 2a02:5ec0::/32 | 4.3B × /64 | RIPE NCC | NL | 21st Sept 2012 |
| 2a02:5ee0::/32 | 4.3B × /64 | RIPE NCC |  IQ | 16th May 2014 |
| 2a02:5f20::/32 | 4.3B × /64 | RIPE NCC | TR | 16th May 2014 |
| 2a02:6020::/29 | 34.4B × /64 | RIPE NCC |  BA | 16th May 2014 |
| 2a02:6040::/32 | 4.3B × /64 | RIPE NCC |  IR | 21st Sept 2012 |
| 2a02:6060::/32 | 4.3B × /64 | RIPE NCC | NO | 19th May 2014 |
| 2a02:60e0::/32 | 4.3B × /64 | RIPE NCC | FR | 19th May 2014 |
| 2a02:61a0::/32 | 4.3B × /64 | RIPE NCC |  RS | 19th May 2014 |
| 2a02:61c0::/32 | 4.3B × /64 | RIPE NCC | IT | 24th Sept 2012 |
| 2a02:620::/32 | 4.3B × /64 | RIPE NCC | CH | 23rd Jul 2008 |