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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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
85,458 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 2001:df6:cd00::/48 | 65.5k × /64 | APNIC |  PK | 26th Sept 2018 |
| 2001:df6:cd40::/48 | 65.5k × /64 | APNIC |  BD | 9th Mar 2026 |
| 2001:df6:cd80::/48 | 65.5k × /64 | APNIC |  AU | 10th Jun 2021 |
| 2001:df6:cdc0::/48 | 65.5k × /64 | APNIC |  ID | 10th Mar 2026 |
| 2001:df6:ce40::/48 | 65.5k × /64 | APNIC |  VN | 10th Mar 2026 |
| 2001:df6:cf00::/48 | 65.5k × /64 | APNIC |  IN | 26th Sept 2018 |
| 2001:df6:cf40::/48 | 65.5k × /64 | APNIC |  PH | 10th Mar 2026 |
| 2001:df6:cf80::/48 | 65.5k × /64 | APNIC | VN | 11th Jun 2021 |
| 2001:df6:d000::/48 | 65.5k × /64 | APNIC |  HK | 28th Oct 2013 |
| 2001:df6:d040::/48 | 65.5k × /64 | APNIC | AU | 11th Mar 2026 |
| 2001:df6:d080::/48 | 65.5k × /64 | APNIC | IN | 14th Jun 2021 |
| 2001:df6:d0c0::/48 | 65.5k × /64 | APNIC | IN | 11th Mar 2026 |
| 2001:df6:d100::/48 | 65.5k × /64 | APNIC | ID | 26th Sept 2018 |
| 2001:df6:d140::/48 | 65.5k × /64 | APNIC |  NZ | 12th Mar 2026 |
| 2001:df6:d180::/48 | 65.5k × /64 | APNIC | BD | 14th Jun 2021 |
| 2001:df6:d1c0::/48 | 65.5k × /64 | APNIC | PK | 12th Mar 2026 |
| 2001:df6:d200::/48 | 65.5k × /64 | APNIC | IN | 25th Nov 2016 |
| 2001:df6:d240::/48 | 65.5k × /64 | APNIC | ID | 13th Mar 2026 |
| 2001:df6:d280::/48 | 65.5k × /64 | APNIC | IN | 14th Jun 2021 |
| 2001:df6:d300::/48 | 65.5k × /64 | APNIC | NZ | 27th Sept 2018 |
| 2001:df6:d380::/48 | 65.5k × /64 | APNIC | IN | 14th Jun 2021 |
| 2001:df6:d3c0::/48 | 65.5k × /64 | APNIC | ID | 16th Mar 2026 |
| 2001:df6:d40::/48 | 65.5k × /64 | APNIC |  SG | 28th Aug 2025 |
| 2001:df6:d480::/48 | 65.5k × /64 | APNIC | AU | 16th Jun 2021 |
| 2001:df6:d4c0::/48 | 65.5k × /64 | APNIC | SG | 16th Mar 2026 |
| 2001:df6:d500::/48 | 65.5k × /64 | APNIC | AU | 2nd Oct 2018 |
| 2001:df6:d540::/48 | 65.5k × /64 | APNIC | ID | 17th Mar 2026 |
| 2001:df6:d580::/48 | 65.5k × /64 | APNIC | BD | 16th Jun 2021 |
| 2001:df6:d5c0::/48 | 65.5k × /64 | APNIC | PK | 17th Mar 2026 |
| 2001:df6:d640::/48 | 65.5k × /64 | APNIC | IN | 18th Mar 2026 |
| 2001:df6:d6c0::/48 | 65.5k × /64 | APNIC | ID | 18th Mar 2026 |
| 2001:df6:d700::/48 | 65.5k × /64 | APNIC | ID | 2nd Oct 2018 |
| 2001:df6:d740::/48 | 65.5k × /64 | APNIC | ID | 19th Mar 2026 |
| 2001:df6:d800::/48 | 65.5k × /64 | APNIC | BD | 25th Jun 2014 |
| 2001:df6:d80::/48 | 65.5k × /64 | APNIC | IN | 23rd Feb 2021 |
| 2001:df6:d840::/48 | 65.5k × /64 | APNIC | HK | 24th Mar 2026 |
| 2001:df6:d8c0::/48 | 65.5k × /64 | APNIC | IN | 24th Mar 2026 |
| 2001:df6:d900::/48 | 65.5k × /64 | APNIC | AU | 3rd Oct 2018 |
| 2001:df6:d940::/48 | 65.5k × /64 | APNIC | IN | 25th Mar 2026 |
| 2001:df6:d980::/48 | 65.5k × /64 | APNIC | IN | 16th Jun 2021 |
| 2001:df6:da00::/48 | 65.5k × /64 | APNIC | ID | 28th Nov 2016 |
| 2001:df6:da40::/48 | 65.5k × /64 | APNIC |  TH | 25th Mar 2026 |
| 2001:df6:da80::/48 | 65.5k × /64 | APNIC | PH | 17th Jun 2021 |
| 2001:df6:dac0::/48 | 65.5k × /64 | APNIC | NZ | 25th Mar 2026 |
| 2001:df6:db00::/48 | 65.5k × /64 | APNIC | VN | 4th Oct 2018 |
| 2001:df6:db40::/48 | 65.5k × /64 | APNIC | BD | 29th Mar 2026 |
| 2001:df6:dc00::/48 | 65.5k × /64 | APNIC | ID | 22nd Oct 2015 |
| 2001:df6:dc0::/48 | 65.5k × /64 | APNIC | ID | 28th Aug 2025 |
| 2001:df6:dc40::/48 | 65.5k × /64 | APNIC | ID | 1st Apr 2026 |
| 2001:df6:dc80::/48 | 65.5k × /64 | APNIC |  MM | 21st Jun 2021 |