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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 |
|---|---|---|---|---|
| 2400:f8e0::/32 | 4.3B × /64 | APNIC |  AU | 27th Apr 2023 |
| 2400:fe80::/32 | 4.3B × /64 | APNIC | AU | 13th May 2014 |
| 2400:ff40::/32 | 4.3B × /64 | APNIC | AU | 20th Apr 2017 |
| 2401:100::/32 | 4.3B × /64 | APNIC | AU | 3rd Jun 2011 |
| 2401:1260::/32 | 4.3B × /64 | APNIC | AU | 3rd Jul 2023 |
| 2401:1500::/32 | 4.3B × /64 | APNIC | AU | 8th Jun 2011 |
| 2401:1720::/32 | 4.3B × /64 | APNIC | AU | 11th Jul 2023 |
| 2401:1840::/32 | 4.3B × /64 | APNIC | AU | 4th May 2017 |
| 2401:1b80::/32 | 4.3B × /64 | APNIC | AU | 13th Jun 2014 |
| 2401:1be0::/32 | 4.3B × /64 | APNIC | AU | 21st Jul 2023 |
| 2401:1e80::/32 | 4.3B × /64 | APNIC | AU | 16th Jun 2014 |
| 2401:2001::/32 | 4.3B × /64 | APNIC | AU | 3rd Aug 2011 |
| 2401:240::/32 | 4.3B × /64 | APNIC | AU | 23rd Apr 2017 |
| 2401:2480::/32 | 4.3B × /64 | APNIC | AU | 19th Jun 2014 |
| 2401:26c0::/32 | 4.3B × /64 | APNIC | AU | 17th May 2017 |
| 2401:2740::/32 | 4.3B × /64 | APNIC | AU | 18th May 2017 |
| 2401:2800::/32 | 4.3B × /64 | APNIC | AU | 12th May 2008 |
| 2401:2840::/32 | 4.3B × /64 | APNIC | AU | 19th May 2017 |
| 2401:2ac0::/32 | 4.3B × /64 | APNIC | AU | 23rd May 2017 |
| 2401:2bc0::/32 | 4.3B × /64 | APNIC | AU | 24th May 2017 |
| 2401:3080::/32 | 4.3B × /64 | APNIC | AU | 13th Jul 2014 |
| 2401:380::/32 | 4.3B × /64 | APNIC | AU | 26th May 2014 |
| 2401:3940::/32 | 4.3B × /64 | APNIC | AU | 6th Jun 2017 |
| 2401:3a40::/32 | 4.3B × /64 | APNIC | AU | 6th Jun 2017 |
| 2401:3c40::/32 | 4.3B × /64 | APNIC | AU | 6th Jun 2017 |
| 2401:3d40::/32 | 4.3B × /64 | APNIC | AU | 6th Jun 2017 |
| 2401:3dc0::/32 | 4.3B × /64 | APNIC | AU | 6th Jun 2017 |
| 2401:4400::/32 | 4.3B × /64 | APNIC | AU | 21st Aug 2009 |
| 2401:4600::/32 | 4.3B × /64 | APNIC | AU | 23rd Nov 2016 |
| 2401:4601::/32 | 4.3B × /64 | APNIC | AU | 3rd Jan 2017 |
| 2401:4740::/32 | 4.3B × /64 | APNIC | AU | 7th Jun 2017 |
| 2401:4ac0::/32 | 4.3B × /64 | APNIC | AU | 8th Jun 2017 |
| 2401:4b40::/32 | 4.3B × /64 | APNIC | AU | 8th Jun 2017 |
| 2401:4c80::/32 | 4.3B × /64 | APNIC | AU | 23rd Jul 2014 |
| 2401:4d00::/32 | 4.3B × /64 | APNIC | AU | 24th Jun 2011 |
| 2401:4ec0::/32 | 4.3B × /64 | APNIC | AU | 9th Jun 2017 |
| 2401:4f60::/32 | 4.3B × /64 | APNIC | AU | 15th Nov 2023 |
| 2401:51c0::/32 | 4.3B × /64 | APNIC | AU | 13th Jun 2017 |
| 2401:5a60::/32 | 4.3B × /64 | APNIC | AU | 13th Dec 2023 |
| 2401:5b00::/32 | 4.3B × /64 | APNIC | AU | 1st Jul 2011 |
| 2401:5f00::/32 | 4.3B × /64 | APNIC | AU | 5th Jul 2011 |
| 2401:700::/32 | 4.3B × /64 | APNIC | AU | 6th Jun 2011 |
| 2401:7100::/32 | 4.3B × /64 | APNIC | AU | 5th Jul 2011 |
| 2401:72c0::/32 | 4.3B × /64 | APNIC | AU | 29th Jun 2017 |
| 2401:7300::/32 | 4.3B × /64 | APNIC | AU | 5th Jul 2011 |
| 2401:7380::/32 | 4.3B × /64 | APNIC | AU | 22nd Aug 2014 |
| 2401:7440::/32 | 4.3B × /64 | APNIC | AU | 30th Jun 2017 |
| 2401:76e0::/32 | 4.3B × /64 | APNIC | AU | 17th Jan 2024 |
| 2401:7b00::/32 | 4.3B × /64 | APNIC | AU | 11th Jul 2011 |
| 2401:7e60::/32 | 4.3B × /64 | APNIC | AU | 7th Feb 2024 |