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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 |
|---|---|---|---|---|
| 2400:3880::/32 | 4.3B × /64 | APNIC |  AU | 21st Oct 2013 |
| 2400:3900::/32 | 4.3B × /64 | APNIC | AU | 6th Apr 2011 |
| 2400:3c80::/32 | 4.3B × /64 | APNIC | AU | 24th Oct 2013 |
| 2400:3d00::/32 | 4.3B × /64 | APNIC | AU | 7th Apr 2011 |
| 2400:4b00::/32 | 4.3B × /64 | APNIC | AU | 12th Apr 2011 |
| 2400:4b80::/32 | 4.3B × /64 | APNIC | AU | 4th Nov 2013 |
| 2400:4d00::/32 | 4.3B × /64 | APNIC | AU | 12th Apr 2011 |
| 2400:5560::/32 | 4.3B × /64 | APNIC | AU | 28th Jan 2022 |
| 2400:5b80::/32 | 4.3B × /64 | APNIC | AU | 11th Nov 2013 |
| 2400:5e60::/32 | 4.3B × /64 | APNIC | AU | 1st Mar 2022 |
| 2400:6560::/32 | 4.3B × /64 | APNIC | AU | 16th Mar 2022 |
| 2400:6820::/32 | 4.3B × /64 | APNIC | AU | 25th Mar 2022 |
| 2400:6980::/32 | 4.3B × /64 | APNIC | AU | 3rd Dec 2013 |
| 2400:6aa0::/32 | 4.3B × /64 | APNIC | AU | 3rd Apr 2022 |
| 2400:6d80::/32 | 4.3B × /64 | APNIC | AU | 6th Dec 2013 |
| 2400:7600::/32 | 4.3B × /64 | APNIC | AU | 16th Mar 2010 |
| 2400:7c60::/32 | 4.3B × /64 | APNIC | AU | 17th May 2022 |
| 2400:7d00::/32 | 4.3B × /64 | APNIC | AU | 21st Apr 2011 |
| 2400:7d60::/32 | 4.3B × /64 | APNIC | AU | 18th May 2022 |
| 2400:7d80::/32 | 4.3B × /64 | APNIC | AU | 16th Dec 2013 |
| 2400:7ee0::/32 | 4.3B × /64 | APNIC | AU | 19th May 2022 |
| 2400:8060::/32 | 4.3B × /64 | APNIC | AU | 23rd May 2022 |
| 2400:8340::/32 | 4.3B × /64 | APNIC | AU | 28th Dec 2016 |
| 2400:8420::/32 | 4.3B × /64 | APNIC | AU | 3rd Jun 2022 |
| 2400:84a0::/32 | 4.3B × /64 | APNIC | AU | 6th Jun 2022 |
| 2400:89a0::/32 | 4.3B × /64 | APNIC | AU | 21st Jun 2022 |
| 2400:8a00::/32 | 4.3B × /64 | APNIC | AU | 17th Mar 2010 |
| 2400:8ea0::/32 | 4.3B × /64 | APNIC | AU | 30th Jun 2022 |
| 2400:8f40::/32 | 4.3B × /64 | APNIC | AU | 12th Jan 2017 |
| 2400:9000::/32 | 4.3B × /64 | APNIC | AU | 7th Jan 2009 |
| 2400:9260::/32 | 4.3B × /64 | APNIC | AU | 7th Jul 2022 |
| 2400:9420::/32 | 4.3B × /64 | APNIC | AU | 12th Jul 2022 |
| 2400:9480::/32 | 4.3B × /64 | APNIC | AU | 28th Jan 2014 |
| 2400:94c0::/32 | 4.3B × /64 | APNIC | AU | 18th Jan 2017 |
| 2400:99c0::/32 | 4.3B × /64 | APNIC | AU | 23rd Jan 2017 |
| 2400:9a80::/32 | 4.3B × /64 | APNIC | AU | 7th Feb 2014 |
| 2400:9b80::/32 | 4.3B × /64 | APNIC | AU | 7th Feb 2014 |
| 2400:a500::/32 | 4.3B × /64 | APNIC | AU | 4th May 2011 |
| 2400:a700::/32 | 4.3B × /64 | APNIC | AU | 4th May 2011 |
| 2400:a880::/32 | 4.3B × /64 | APNIC | AU | 20th Feb 2014 |
| 2400:ad00::/32 | 4.3B × /64 | APNIC | AU | 5th May 2011 |
| 2400:b160::/32 | 4.3B × /64 | APNIC | AU | 29th Sept 2022 |
| 2400:b440::/32 | 4.3B × /64 | APNIC | AU | 16th Feb 2017 |
| 2400:b6e0::/32 | 4.3B × /64 | APNIC | AU | 12th Oct 2022 |
| 2400:b780::/32 | 4.3B × /64 | APNIC | AU | 6th Mar 2014 |
| 2400:bae0::/32 | 4.3B × /64 | APNIC | AU | 27th Oct 2022 |
| 2400:bec0::/32 | 4.3B × /64 | APNIC | AU | 24th Feb 2017 |
| 2400:c040::/32 | 4.3B × /64 | APNIC | AU | 24th Feb 2017 |
| 2400:d500::/32 | 4.3B × /64 | APNIC | AU | 18th May 2011 |
| 2400:d9c0::/32 | 4.3B × /64 | APNIC | AU | 14th Mar 2017 |