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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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.
Browse by registry
Browse by country
Countries with the most unannounced blocks, largest first.
Unannounced blocks
85,256 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 2407:7740::/32 | 4.3B × /64 | APNIC |  ID | 3rd Jun 2021 |
| 2407:7780::/32 | 4.3B × /64 | APNIC |  CN | 8th Oct 2016 |
| 2407:77c0::/32 | 4.3B × /64 | APNIC |  KR | 4th Jun 2021 |
| 2407:7800::/32 | 4.3B × /64 | APNIC |  AU | 14th May 2009 |
| 2407:780::/32 | 4.3B × /64 | APNIC |  MM | 1st Sept 2016 |
| 2407:7840::/32 | 4.3B × /64 | APNIC | ID | 4th Jun 2021 |
| 2407:7880::/32 | 4.3B × /64 | APNIC | CN | 8th Oct 2016 |
| 2407:78c0::/32 | 4.3B × /64 | APNIC | ID | 4th Jun 2021 |
| 2407:7940::/32 | 4.3B × /64 | APNIC | ID | 4th Jun 2021 |
| 2407:7980::/32 | 4.3B × /64 | APNIC | CN | 9th Oct 2016 |
| 2407:7ac0::/32 | 4.3B × /64 | APNIC |  BD | 8th Jun 2021 |
| 2407:7b40::/32 | 4.3B × /64 | APNIC | ID | 9th Jun 2021 |
| 2407:7bc0::/32 | 4.3B × /64 | APNIC | ID | 9th Jun 2021 |
| 2407:7c00::/32 | 4.3B × /64 | APNIC |  SG | 2nd Mar 2010 |
| 2407:7c40::/32 | 4.3B × /64 | APNIC | ID | 9th Jun 2021 |
| 2407:7c80::/32 | 4.3B × /64 | APNIC | CN | 10th Oct 2016 |
| 2407:7cc0::/32 | 4.3B × /64 | APNIC | ID | 9th Jun 2021 |
| 2407:7d40::/32 | 4.3B × /64 | APNIC | ID | 9th Jun 2021 |
| 2407:7d80::/32 | 4.3B × /64 | APNIC | CN | 10th Oct 2016 |
| 2407:7dc0::/32 | 4.3B × /64 | APNIC | ID | 9th Jun 2021 |
| 2407:7e40::/32 | 4.3B × /64 | APNIC | ID | 10th Jun 2021 |
| 2407:7e80::/32 | 4.3B × /64 | APNIC | CN | 10th Oct 2016 |
| 2407:7ec0::/32 | 4.3B × /64 | APNIC |  VN | 10th Jun 2021 |
| 2407:7f40::/32 | 4.3B × /64 | APNIC | ID | 10th Jun 2021 |
| 2407:7fc0::/32 | 4.3B × /64 | APNIC | ID | 10th Jun 2021 |
| 2407:800::/32 | 4.3B × /64 | APNIC |  FJ | 29th Apr 2009 |
| 2407:8040::/32 | 4.3B × /64 | APNIC | ID | 10th Jun 2021 |
| 2407:8080::/32 | 4.3B × /64 | APNIC |  IN | 11th Oct 2016 |
| 2407:80::/32 | 4.3B × /64 | APNIC | SG | 1st Sept 2016 |
| 2407:80c0::/32 | 4.3B × /64 | APNIC | ID | 10th Jun 2021 |
| 2407:8140::/32 | 4.3B × /64 | APNIC | ID | 10th Jun 2021 |
| 2407:8180::/32 | 4.3B × /64 | APNIC |  KH | 11th Oct 2016 |
| 2407:81c0::/32 | 4.3B × /64 | APNIC | ID | 10th Jun 2021 |
| 2407:8200::/32 | 4.3B × /64 | APNIC | ID | 1st Mar 2011 |
| 2407:8240::/32 | 4.3B × /64 | APNIC | ID | 10th Jun 2021 |
| 2407:8280::/32 | 4.3B × /64 | APNIC | AU | 12th Oct 2016 |
| 2407:82c0::/32 | 4.3B × /64 | APNIC | ID | 10th Jun 2021 |
| 2407:8300::/32 | 4.3B × /64 | APNIC | AU | 16th Jul 2013 |
| 2407:8340::/32 | 4.3B × /64 | APNIC | IN | 10th Jun 2021 |
| 2407:8380::/32 | 4.3B × /64 | APNIC | AU | 12th Oct 2016 |
| 2407:83c0::/32 | 4.3B × /64 | APNIC | VN | 11th Jun 2021 |
| 2407:8400::/32 | 4.3B × /64 | APNIC | AU | 4th Mar 2010 |
| 2407:840::/32 | 4.3B × /64 | APNIC | BD | 15th Jan 2021 |
| 2407:8480::/32 | 4.3B × /64 | APNIC |  HK | 12th Oct 2016 |
| 2407:84c0::/32 | 4.3B × /64 | APNIC | ID | 11th Jun 2021 |
| 2407:8500::/32 | 4.3B × /64 | APNIC | SG | 16th Jul 2013 |
| 2407:8540::/32 | 4.3B × /64 | APNIC | ID | 11th Jun 2021 |
| 2407:85c0::/32 | 4.3B × /64 | APNIC | ID | 11th Jun 2021 |
| 2407:8600::/32 | 4.3B × /64 | APNIC | AU | 1st Mar 2011 |
| 2407:8640::/32 | 4.3B × /64 | APNIC | ID | 11th Jun 2021 |