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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 in Australia
2,385 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 2403:1900::/32 | 4.3B × /64 | APNIC |  AU | 14th Feb 2012 |
| 2403:2a80::/32 | 4.3B × /64 | APNIC | AU | 22nd Oct 2015 |
| 2403:2c0::/32 | 4.3B × /64 | APNIC | AU | 6th Jun 2018 |
| 2403:2f80::/32 | 4.3B × /64 | APNIC | AU | 26th Oct 2015 |
| 2403:3180::/32 | 4.3B × /64 | APNIC | AU | 28th Oct 2015 |
| 2403:3500::/32 | 4.3B × /64 | APNIC | AU | 1st Mar 2012 |
| 2403:3600::/32 | 4.3B × /64 | APNIC | AU | 5th Jul 2010 |
| 2403:3c00::/32 | 4.3B × /64 | APNIC | AU | 2nd Dec 2009 |
| 2403:480::/32 | 4.3B × /64 | APNIC | AU | 7th Oct 2015 |
| 2403:4bc0::/32 | 4.3B × /64 | APNIC | AU | 27th Jul 2018 |
| 2403:4dc0::/32 | 4.3B × /64 | APNIC | AU | 30th Jul 2018 |
| 2403:5100::/32 | 4.3B × /64 | APNIC | AU | 9th Mar 2012 |
| 2403:540::/32 | 4.3B × /64 | APNIC | AU | 7th Jun 2018 |
| 2403:640::/32 | 4.3B × /64 | APNIC | AU | 7th Jun 2018 |
| 2403:66c0::/32 | 4.3B × /64 | APNIC | AU | 15th Aug 2018 |
| 2403:6700::/32 | 4.3B × /64 | APNIC | AU | 21st Mar 2012 |
| 2403:880::/32 | 4.3B × /64 | APNIC | AU | 9th Oct 2015 |
| 2403:8ac0::/32 | 4.3B × /64 | APNIC | AU | 11th Sept 2018 |
| 2403:900::/32 | 4.3B × /64 | APNIC | AU | 3rd Feb 2012 |
| 2403:97c0::/32 | 4.3B × /64 | APNIC | AU | 20th Sept 2018 |
| 2403:9c0::/32 | 4.3B × /64 | APNIC | AU | 8th Jun 2018 |
| 2403:b000::/32 | 4.3B × /64 | APNIC | AU | 31st Mar 2008 |
| 2403:ba80::/32 | 4.3B × /64 | APNIC | AU | 26th Nov 2015 |
| 2403:c400::/32 | 4.3B × /64 | APNIC | AU | 20th Jan 2010 |
| 2403:ce00::/32 | 4.3B × /64 | APNIC | AU | 6th Aug 2010 |
| 2403:cf00::/32 | 4.3B × /64 | APNIC | AU | 9th May 2012 |
| 2403:d00::/32 | 4.3B × /64 | APNIC | AU | 6th Feb 2012 |
| 2403:d100::/32 | 4.3B × /64 | APNIC | AU | 9th May 2012 |
| 2403:d1c0::/32 | 4.3B × /64 | APNIC | AU | 24th Oct 2018 |
| 2403:d3c0::/32 | 4.3B × /64 | APNIC | AU | 25th Oct 2018 |
| 2403:d900::/32 | 4.3B × /64 | APNIC | AU | 11th May 2012 |
| 2403:e40::/32 | 4.3B × /64 | APNIC | AU | 12th Jun 2018 |
| 2403:fd00::/32 | 4.3B × /64 | APNIC | AU | 22nd May 2012 |
| 2403:fdc0::/32 | 4.3B × /64 | APNIC | AU | 26th Nov 2018 |
| 2404:1600::/32 | 4.3B × /64 | APNIC | AU | 25th Aug 2010 |
| 2404:1601::/32 | 4.3B × /64 | APNIC | AU | 19th Nov 2014 |
| 2404:1840::/32 | 4.3B × /64 | APNIC | AU | 12th Dec 2018 |
| 2404:1d00::/32 | 4.3B × /64 | APNIC | AU | 5th Jun 2012 |
| 2404:2780::/32 | 4.3B × /64 | APNIC | AU | 22nd Jan 2016 |
| 2404:2ac0::/32 | 4.3B × /64 | APNIC | AU | 27th Dec 2018 |
| 2404:2b00::/32 | 4.3B × /64 | APNIC | AU | 14th Jun 2012 |
| 2404:4180::/32 | 4.3B × /64 | APNIC | AU | 5th Feb 2016 |
| 2404:4380::/32 | 4.3B × /64 | APNIC | AU | 8th Feb 2016 |
| 2404:4440::/32 | 4.3B × /64 | APNIC | AU | 16th Jan 2019 |
| 2404:4b40::/32 | 4.3B × /64 | APNIC | AU | 23rd Jan 2019 |
| 2404:4c00::/32 | 4.3B × /64 | APNIC | AU | 10th Feb 2010 |
| 2404:5000::/32 | 4.3B × /64 | APNIC | AU | 16th Jan 2009 |
| 2404:5080::/32 | 4.3B × /64 | APNIC | AU | 15th Feb 2016 |
| 2404:5300::/32 | 4.3B × /64 | APNIC | AU | 2nd Jul 2012 |
| 2404:5400::/32 | 4.3B × /64 | APNIC | AU | 11th Feb 2010 |