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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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
85,392 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 2001:df4:9e00::/48 | 65.5k × /64 | APNIC |  AU | 2nd Sept 2016 |
| 2001:df4:9e40::/48 | 65.5k × /64 | APNIC |  VN | 13th Nov 2024 |
| 2001:df4:9e80::/48 | 65.5k × /64 | APNIC |  ID | 18th Aug 2020 |
| 2001:df4:9ec0::/48 | 65.5k × /64 | APNIC | VN | 13th Nov 2024 |
| 2001:df4:9f40::/48 | 65.5k × /64 | APNIC | VN | 13th Nov 2024 |
| 2001:df4:9f80::/48 | 65.5k × /64 | APNIC | ID | 18th Aug 2020 |
| 2001:df4:9fc0::/48 | 65.5k × /64 | APNIC |  PK | 14th Nov 2024 |
| 2001:df4::/48 | 65.5k × /64 | APNIC |  MY | 14th Feb 2013 |
| 2001:df4:a000::/48 | 65.5k × /64 | APNIC |  NZ | 26th Jun 2013 |
| 2001:df4:a00::/48 | 65.5k × /64 | APNIC |  NP | 16th Aug 2016 |
| 2001:df4:a040::/48 | 65.5k × /64 | APNIC |  BD | 14th Nov 2024 |
| 2001:df4:a080::/48 | 65.5k × /64 | APNIC | ID | 18th Aug 2020 |
| 2001:df4:a0c0::/48 | 65.5k × /64 | APNIC |  HK | 15th Nov 2024 |
| 2001:df4:a100::/48 | 65.5k × /64 | APNIC | ID | 27th Mar 2018 |
| 2001:df4:a140::/48 | 65.5k × /64 | APNIC | ID | 19th Nov 2024 |
| 2001:df4:a180::/48 | 65.5k × /64 | APNIC | ID | 18th Aug 2020 |
| 2001:df4:a200::/48 | 65.5k × /64 | APNIC | AU | 2nd Sept 2016 |
| 2001:df4:a240::/48 | 65.5k × /64 | APNIC | VN | 19th Nov 2024 |
| 2001:df4:a280::/48 | 65.5k × /64 | APNIC | ID | 18th Aug 2020 |
| 2001:df4:a2c0::/48 | 65.5k × /64 | APNIC | VN | 19th Nov 2024 |
| 2001:df4:a300::/48 | 65.5k × /64 | APNIC |  IN | 28th Mar 2018 |
| 2001:df4:a340::/48 | 65.5k × /64 | APNIC | VN | 19th Nov 2024 |
| 2001:df4:a380::/48 | 65.5k × /64 | APNIC | ID | 18th Aug 2020 |
| 2001:df4:a3c0::/48 | 65.5k × /64 | APNIC | BD | 20th Nov 2024 |
| 2001:df4:a440::/48 | 65.5k × /64 | APNIC | IN | 20th Nov 2024 |
| 2001:df4:a480::/48 | 65.5k × /64 | APNIC | MY | 19th Aug 2020 |
| 2001:df4:a4c0::/48 | 65.5k × /64 | APNIC | BD | 21st Nov 2024 |
| 2001:df4:a500::/48 | 65.5k × /64 | APNIC | AU | 28th Mar 2018 |
| 2001:df4:a540::/48 | 65.5k × /64 | APNIC | ID | 21st Nov 2024 |
| 2001:df4:a580::/48 | 65.5k × /64 | APNIC | BD | 19th Aug 2020 |
| 2001:df4:a5c0::/48 | 65.5k × /64 | APNIC |  PH | 21st Nov 2024 |
| 2001:df4:a600::/48 | 65.5k × /64 | APNIC | AU | 2nd Sept 2016 |
| 2001:df4:a640::/48 | 65.5k × /64 | APNIC | VN | 21st Nov 2024 |
| 2001:df4:a6c0::/48 | 65.5k × /64 | APNIC | BD | 21st Nov 2024 |
| 2001:df4:a740::/48 | 65.5k × /64 | APNIC | PK | 22nd Nov 2024 |
| 2001:df4:a780::/48 | 65.5k × /64 | APNIC | IN | 21st Aug 2020 |
| 2001:df4:a7c0::/48 | 65.5k × /64 | APNIC | BD | 22nd Nov 2024 |
| 2001:df4:a800::/48 | 65.5k × /64 | APNIC | ID | 10th Apr 2014 |
| 2001:df4:a840::/48 | 65.5k × /64 | APNIC | IN | 22nd Nov 2024 |
| 2001:df4:a880::/48 | 65.5k × /64 | APNIC |  MM | 24th Aug 2020 |
| 2001:df4:a940::/48 | 65.5k × /64 | APNIC | VN | 22nd Nov 2024 |
| 2001:df4:a9c0::/48 | 65.5k × /64 | APNIC | VN | 22nd Nov 2024 |
| 2001:df4:aa00::/48 | 65.5k × /64 | APNIC | PK | 2nd Sept 2016 |
| 2001:df4:ab40::/48 | 65.5k × /64 | APNIC | ID | 25th Nov 2024 |
| 2001:df4:ab80::/48 | 65.5k × /64 | APNIC | BD | 25th Aug 2020 |
| 2001:df4:abc0::/48 | 65.5k × /64 | APNIC | ID | 25th Nov 2024 |
| 2001:df4:ac00::/48 | 65.5k × /64 | APNIC | AU | 26th Jun 2015 |
| 2001:df4:ac0::/48 | 65.5k × /64 | APNIC | VN | 9th Jul 2024 |
| 2001:df4:ac40::/48 | 65.5k × /64 | APNIC | IN | 25th Nov 2024 |
| 2001:df4:ac80::/48 | 65.5k × /64 | APNIC | ID | 25th Aug 2020 |