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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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
25,318 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 2a03:1040::/32 | 4.3B × /64 | RIPE NCC | 10th Oct 2012 | |
| 2a03:1060::/32 | 4.3B × /64 | RIPE NCC | 15th Jul 2014 | |
| 2a03:1120::/32 | 4.3B × /64 | RIPE NCC | 15th Jul 2014 | |
| 2a03:1140::/32 | 4.3B × /64 | RIPE NCC | 10th Oct 2012 | |
| 2a03:1200::/32 | 4.3B × /64 | RIPE NCC | 4th Feb 2011 | |
| 2a03:1220::/32 | 4.3B × /64 | RIPE NCC | 16th Jul 2014 | |
| 2a03:1260::/32 | 4.3B × /64 | RIPE NCC | 16th Jul 2014 | |
| 2a03:12a0::/29 | 34.4B × /64 | RIPE NCC | 17th Aug 2015 | |
| 2a03:1320::/32 | 4.3B × /64 | RIPE NCC | 17th Jul 2014 | |
| 2a03:1340::/32 | 4.3B × /64 | RIPE NCC | 11th Oct 2012 | |
| 2a03:13e0::/32 | 4.3B × /64 | RIPE NCC | 18th Jul 2014 | |
| 2a03:140::/32 | 4.3B × /64 | RIPE NCC | 3rd Oct 2012 | |
| 2a03:1420::/32 | 4.3B × /64 | RIPE NCC | 21st Jul 2014 | |
| 2a03:1480::/32 | 4.3B × /64 | RIPE NCC | 17th Aug 2015 | |
| 2a03:14c0::/32 | 4.3B × /64 | RIPE NCC | 12th Oct 2012 | |
| 2a03:1560::/32 | 4.3B × /64 | RIPE NCC | 22nd Jul 2014 | |
| 2a03:1580::/32 | 4.3B × /64 | RIPE NCC | 12th Aug 2011 | |
| 2a03:15c0::/32 | 4.3B × /64 | RIPE NCC | 12th Oct 2012 | |
| 2a03:160::/32 | 4.3B × /64 | RIPE NCC | 30th Jun 2014 | |
| 2a03:1620::/32 | 4.3B × /64 | RIPE NCC | 23rd Jul 2014 | |
| 2a03:1660::/32 | 4.3B × /64 | RIPE NCC | 23rd Jul 2014 | |
| 2a03:1680::/32 | 4.3B × /64 | RIPE NCC | 12th Aug 2011 | |
| 2a03:16c0::/32 | 4.3B × /64 | RIPE NCC | 12th Oct 2012 | |
| 2a03:1700::/29 | 34.4B × /64 | RIPE NCC | 25th Mar 2011 | |
| 2a03:1740::/32 | 4.3B × /64 | RIPE NCC | 12th Oct 2012 | |
| 2a03:1760::/32 | 4.3B × /64 | RIPE NCC | 24th Jul 2014 | |
| 2a03:1780::/32 | 4.3B × /64 | RIPE NCC | 12th Aug 2011 | |
| 2a03:17a0::/32 | 4.3B × /64 | RIPE NCC | 24th Jul 2014 | |
| 2a03:1800::/32 | 4.3B × /64 | RIPE NCC | 15th Dec 2010 | |
| 2a03:180::/32 | 4.3B × /64 | RIPE NCC | 4th Aug 2011 | |
| 2a03:1820::/32 | 4.3B × /64 | RIPE NCC | 25th Jul 2014 | |
| 2a03:18a0::/32 | 4.3B × /64 | RIPE NCC | 25th Jul 2014 | |
| 2a03:1900::/29 | 34.4B × /64 | RIPE NCC | 25th Mar 2011 | |
| 2a03:1920::/32 | 4.3B × /64 | RIPE NCC | 28th Jul 2014 | |
| 2a03:1940::/32 | 4.3B × /64 | RIPE NCC | 12th Oct 2012 | |
| 2a03:1960::/32 | 4.3B × /64 | RIPE NCC | 28th Jul 2014 | |
| 2a03:19e0::/32 | 4.3B × /64 | RIPE NCC | 28th Jul 2014 | |
| 2a03:1a0::/32 | 4.3B × /64 | RIPE NCC | 30th Jun 2014 | |
| 2a03:1a20::/32 | 4.3B × /64 | RIPE NCC | 29th Jul 2014 | |
| 2a03:1a40::/32 | 4.3B × /64 | RIPE NCC | 12th Oct 2012 | |
| 2a03:1b60::/32 | 4.3B × /64 | RIPE NCC | 29th Jul 2014 | |
| 2a03:1be0::/32 | 4.3B × /64 | RIPE NCC | 29th Jul 2014 | |
| 2a03:1c00::/29 | 34.4B × /64 | RIPE NCC | 10th Jan 2011 | |
| 2a03:1c20::/32 | 4.3B × /64 | RIPE NCC | 30th Jul 2014 | |
| 2a03:1c40::/32 | 4.3B × /64 | RIPE NCC | 15th Oct 2012 | |
| 2a03:1ca0::/32 | 4.3B × /64 | RIPE NCC | 30th Jul 2014 | |
| 2a03:1cc0::/32 | 4.3B × /64 | RIPE NCC | 15th Oct 2012 | |
| 2a03:1ce0::/32 | 4.3B × /64 | RIPE NCC | 31st Jul 2014 | |
| 2a03:1d00::/32 | 4.3B × /64 | RIPE NCC | 28th Mar 2011 | |
| 2a03:1da0::/29 | 34.4B × /64 | RIPE NCC | 31st Jul 2014 |