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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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.
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Countries with the most unannounced blocks, largest first.
Unannounced blocks in Australia
2,394 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 2402:dc0::/32 | 4.3B × /64 | APNIC |  AU | 24th Nov 2017 |
| 2402:e900::/32 | 4.3B × /64 | APNIC | AU | 18th Jan 2012 |
| 2402:eb00::/32 | 4.3B × /64 | APNIC | AU | 19th Jan 2012 |
| 2402:ec0::/32 | 4.3B × /64 | APNIC | AU | 24th Nov 2017 |
| 2402:ee00::/32 | 4.3B × /64 | APNIC | AU | 22nd Jun 2010 |
| 2402:f240::/32 | 4.3B × /64 | APNIC | AU | 25th May 2018 |
| 2402:f700::/32 | 4.3B × /64 | APNIC | AU | 23rd Jan 2012 |
| 2402:ff80::/32 | 4.3B × /64 | APNIC | AU | 2nd Oct 2015 |
| 2403:1100::/32 | 4.3B × /64 | APNIC | AU | 7th Feb 2012 |
| 2403:14c0::/32 | 4.3B × /64 | APNIC | AU | 20th Jun 2018 |
| 2403:1680::/32 | 4.3B × /64 | APNIC | AU | 19th Oct 2015 |
| 2403:1700::/32 | 4.3B × /64 | APNIC | AU | 13th Feb 2012 |
| 2403:180::/32 | 4.3B × /64 | APNIC | AU | 6th Oct 2015 |
| 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 |