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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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
2,385 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 2405:7500::/32 | 4.3B × /64 | APNIC |  AU | 17th Oct 2012 |
| 2405:7940::/32 | 4.3B × /64 | APNIC | AU | 12th Nov 2019 |
| 2405:7f00::/32 | 4.3B × /64 | APNIC | AU | 22nd Oct 2012 |
| 2405:8800::/32 | 4.3B × /64 | APNIC | AU | 29th Oct 2008 |
| 2405:8900::/32 | 4.3B × /64 | APNIC | AU | 26th Oct 2012 |
| 2405:8b00::/32 | 4.3B × /64 | APNIC | AU | 30th Oct 2012 |
| 2405:8c40::/32 | 4.3B × /64 | APNIC | AU | 28th Nov 2019 |
| 2405:a180::/32 | 4.3B × /64 | APNIC | AU | 6th Jun 2016 |
| 2405:a580::/32 | 4.3B × /64 | APNIC | AU | 7th Jun 2016 |
| 2405:a9c0::/32 | 4.3B × /64 | APNIC | AU | 31st Dec 2019 |
| 2405:b380::/32 | 4.3B × /64 | APNIC | AU | 13th Jun 2016 |
| 2405:b600::/32 | 4.3B × /64 | APNIC | AU | 14th Dec 2010 |
| 2405:b680::/32 | 4.3B × /64 | APNIC | AU | 15th Jun 2016 |
| 2405:bc00::/32 | 4.3B × /64 | APNIC | AU | 12th Feb 2010 |
| 2405:c080::/32 | 4.3B × /64 | APNIC | AU | 23rd Jun 2016 |
| 2405:c800::/32 | 4.3B × /64 | APNIC | AU | 11th Mar 2009 |
| 2405:cf00::/32 | 4.3B × /64 | APNIC | AU | 26th Nov 2012 |
| 2405:d100::/32 | 4.3B × /64 | APNIC | AU | 26th Nov 2012 |
| 2405:d300::/32 | 4.3B × /64 | APNIC | AU | 27th Nov 2012 |
| 2405:d840::/32 | 4.3B × /64 | APNIC | AU | 25th Feb 2020 |
| 2405:e680::/32 | 4.3B × /64 | APNIC | AU | 8th Jul 2016 |
| 2405:e7c0::/32 | 4.3B × /64 | APNIC | AU | 10th Mar 2020 |
| 2405:ea00::/32 | 4.3B × /64 | APNIC | AU | 30th Dec 2010 |
| 2405:ed80::/32 | 4.3B × /64 | APNIC | AU | 15th Jul 2016 |
| 2405:ee00::/32 | 4.3B × /64 | APNIC | AU | 31st Dec 2010 |
| 2406:11c0::/32 | 4.3B × /64 | APNIC | AU | 1st May 2020 |
| 2406:1c00::/32 | 4.3B × /64 | APNIC | AU | 15th Feb 2010 |
| 2406:200::/32 | 4.3B × /64 | APNIC | AU | 5th Jan 2011 |
| 2406:2380::/32 | 4.3B × /64 | APNIC | AU | 1st Aug 2016 |
| 2406:2cc0::/32 | 4.3B × /64 | APNIC | AU | 22nd Jun 2020 |
| 2406:3600::/32 | 4.3B × /64 | APNIC | AU | 13th Jan 2011 |
| 2406:3b00::/32 | 4.3B × /64 | APNIC | AU | 11th Feb 2013 |
| 2406:3c40::/32 | 4.3B × /64 | APNIC | AU | 8th Jul 2020 |
| 2406:4100::/32 | 4.3B × /64 | APNIC | AU | 14th Feb 2013 |
| 2406:4200::/32 | 4.3B × /64 | APNIC | AU | 14th Jan 2011 |
| 2406:4600::/32 | 4.3B × /64 | APNIC | AU | 14th Jan 2011 |
| 2406:4b40::/32 | 4.3B × /64 | APNIC | AU | 28th Jul 2020 |
| 2406:5100::/32 | 4.3B × /64 | APNIC | AU | 28th Feb 2013 |
| 2406:5a80::/32 | 4.3B × /64 | APNIC | AU | 8th Aug 2016 |
| 2406:5d00::/32 | 4.3B × /64 | APNIC | AU | 6th Mar 2013 |
| 2406:5e00::/32 | 4.3B × /64 | APNIC | AU | 18th Jan 2011 |
| 2406:5f00::/32 | 4.3B × /64 | APNIC | AU | 6th Mar 2013 |
| 2406:6400::/32 | 4.3B × /64 | APNIC | AU | 16th Feb 2010 |
| 2406:6900::/32 | 4.3B × /64 | APNIC | AU | 11th Mar 2013 |
| 2406:6c00::/32 | 4.3B × /64 | APNIC | AU | 17th Feb 2010 |
| 2406:74c0::/32 | 4.3B × /64 | APNIC | AU | 15th Sept 2020 |
| 2406:7c00::/32 | 4.3B × /64 | APNIC | AU | 18th Feb 2010 |
| 2406:8a00::/32 | 4.3B × /64 | APNIC | AU | 27th Jan 2011 |
| 2406:900::/32 | 4.3B × /64 | APNIC | AU | 9th Jan 2013 |
| 2406:93c0::/32 | 4.3B × /64 | APNIC | AU | 7th Oct 2020 |