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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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
84,424 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 2405:7080::/32 | 4.3B × /64 | APNIC | 20th May 2016 | |
| 2405:7180::/32 | 4.3B × /64 | APNIC | 20th May 2016 | |
| 2405:71c0::/32 | 4.3B × /64 | APNIC | 5th Nov 2019 | |
| 2405:7200::/32 | 4.3B × /64 | APNIC | 25th Nov 2010 | |
| 2405:7280::/32 | 4.3B × /64 | APNIC | 20th May 2016 | |
| 2405:7380::/32 | 4.3B × /64 | APNIC | 20th May 2016 | |
| 2405:740::/32 | 4.3B × /64 | APNIC | 9th Jul 2019 | |
| 2405:7440::/32 | 4.3B × /64 | APNIC | 6th Nov 2019 | |
| 2405:7480::/32 | 4.3B × /64 | APNIC | 20th May 2016 | |
| 2405:74c0::/32 | 4.3B × /64 | APNIC | 6th Nov 2019 | |
| 2405:7500::/32 | 4.3B × /64 | APNIC | 17th Oct 2012 | |
| 2405:7540::/32 | 4.3B × /64 | APNIC | 7th Nov 2019 | |
| 2405:7580::/32 | 4.3B × /64 | APNIC | 20th May 2016 | |
| 2405:75c0::/32 | 4.3B × /64 | APNIC | 7th Nov 2019 | |
| 2405:7680::/32 | 4.3B × /64 | APNIC | 20th May 2016 | |
| 2405:76c0::/32 | 4.3B × /64 | APNIC | 8th Nov 2019 | |
| 2405:7780::/32 | 4.3B × /64 | APNIC | 20th May 2016 | |
| 2405:780::/32 | 4.3B × /64 | APNIC | 9th May 2016 | |
| 2405:7840::/32 | 4.3B × /64 | APNIC | 10th Nov 2019 | |
| 2405:7880::/32 | 4.3B × /64 | APNIC | 20th May 2016 | |
| 2405:7940::/32 | 4.3B × /64 | APNIC | 12th Nov 2019 | |
| 2405:7980::/32 | 4.3B × /64 | APNIC | 20th May 2016 | |
| 2405:79c0::/32 | 4.3B × /64 | APNIC | 13th Nov 2019 | |
| 2405:7a80::/32 | 4.3B × /64 | APNIC | 20th May 2016 | |
| 2405:7ac0::/32 | 4.3B × /64 | APNIC | 13th Nov 2019 | |
| 2405:7b40::/32 | 4.3B × /64 | APNIC | 14th Nov 2019 | |
| 2405:7b80::/32 | 4.3B × /64 | APNIC | 20th May 2016 | |
| 2405:7c0::/32 | 4.3B × /64 | APNIC | 9th Jul 2019 | |
| 2405:7c40::/32 | 4.3B × /64 | APNIC | 14th Nov 2019 | |
| 2405:7c80::/32 | 4.3B × /64 | APNIC | 20th May 2016 | |
| 2405:7d40::/32 | 4.3B × /64 | APNIC | 14th Nov 2019 | |
| 2405:7ec0::/32 | 4.3B × /64 | APNIC | 18th Nov 2019 | |
| 2405:7f00::/32 | 4.3B × /64 | APNIC | 22nd Oct 2012 | |
| 2405:7f40::/32 | 4.3B × /64 | APNIC | 18th Nov 2019 | |
| 2405:7fc0::/32 | 4.3B × /64 | APNIC | 18th Nov 2019 | |
| 2405:8080::/32 | 4.3B × /64 | APNIC | 26th May 2016 | |
| 2405:8140::/32 | 4.3B × /64 | APNIC | 19th Nov 2019 | |
| 2405:81c0::/32 | 4.3B × /64 | APNIC | 19th Nov 2019 | |
| 2405:8200::/32 | 4.3B × /64 | APNIC | 28th Nov 2010 | |
| 2405:8300::/32 | 4.3B × /64 | APNIC | 23rd Oct 2012 | |
| 2405:8340::/32 | 4.3B × /64 | APNIC | 20th Nov 2019 | |
| 2405:840::/32 | 4.3B × /64 | APNIC | 9th Jul 2019 | |
| 2405:8480::/32 | 4.3B × /64 | APNIC | 26th May 2016 | |
| 2405:8580::/32 | 4.3B × /64 | APNIC | 26th May 2016 | |
| 2405:8600::/32 | 4.3B × /64 | APNIC | 29th Nov 2010 | |
| 2405:8680::/32 | 4.3B × /64 | APNIC | 26th May 2016 | |
| 2405:8700::/32 | 4.3B × /64 | APNIC | 25th Oct 2012 | |
| 2405:8780::/32 | 4.3B × /64 | APNIC | 26th May 2016 | |
| 2405:87c0::/32 | 4.3B × /64 | APNIC | 25th Nov 2019 | |
| 2405:8800::/32 | 4.3B × /64 | APNIC | 29th Oct 2008 |