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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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:df3:a140::/48 | 65.5k × /64 | APNIC |  AU | 2nd Apr 2024 |
| 2001:df3:a2c0::/48 | 65.5k × /64 | APNIC |  JP | 4th Apr 2024 |
| 2001:df3:a340::/48 | 65.5k × /64 | APNIC |  MN | 4th Apr 2024 |
| 2001:df3:a380::/48 | 65.5k × /64 | APNIC |  PK | 5th May 2020 |
| 2001:df3:a400::/48 | 65.5k × /64 | APNIC |  HK | 20th Apr 2015 |
| 2001:df3:a440::/48 | 65.5k × /64 | APNIC |  IN | 4th Apr 2024 |
| 2001:df3:a480::/48 | 65.5k × /64 | APNIC | AU | 5th May 2020 |
| 2001:df3:a500::/48 | 65.5k × /64 | APNIC |  ID | 22nd Dec 2017 |
| 2001:df3:a540::/48 | 65.5k × /64 | APNIC |  PH | 5th Apr 2024 |
| 2001:df3:a580::/48 | 65.5k × /64 | APNIC | ID | 6th May 2020 |
| 2001:df3:a5c0::/48 | 65.5k × /64 | APNIC |  NP | 5th Apr 2024 |
| 2001:df3:a600::/48 | 65.5k × /64 | APNIC | IN | 28th Jul 2016 |
| 2001:df3:a680::/48 | 65.5k × /64 | APNIC |  CN | 7th May 2020 |
| 2001:df3:a740::/48 | 65.5k × /64 | APNIC | IN | 5th Apr 2024 |
| 2001:df3:a780::/48 | 65.5k × /64 | APNIC |  NZ | 8th May 2020 |
| 2001:df3:a7c0::/48 | 65.5k × /64 | APNIC | PH | 8th Apr 2024 |
| 2001:df3:a800::/48 | 65.5k × /64 | APNIC |  MY | 12th Mar 2014 |
| 2001:df3:a840::/48 | 65.5k × /64 | APNIC | AU | 8th Apr 2024 |
| 2001:df3:a8c0::/48 | 65.5k × /64 | APNIC | IN | 9th Apr 2024 |
| 2001:df3:a900::/48 | 65.5k × /64 | APNIC | ID | 27th Dec 2017 |
| 2001:df3:a940::/48 | 65.5k × /64 | APNIC |  BD | 9th Apr 2024 |
| 2001:df3:a980::/48 | 65.5k × /64 | APNIC |  VN | 8th May 2020 |
| 2001:df3:a9c0::/48 | 65.5k × /64 | APNIC | PK | 9th Apr 2024 |
| 2001:df3:aa00::/48 | 65.5k × /64 | APNIC | ID | 29th Jul 2016 |
| 2001:df3:aa40::/48 | 65.5k × /64 | APNIC | BD | 10th Apr 2024 |
| 2001:df3:aa80::/48 | 65.5k × /64 | APNIC | VN | 8th May 2020 |
| 2001:df3:ab00::/48 | 65.5k × /64 | APNIC | ID | 27th Dec 2017 |
| 2001:df3:ab40::/48 | 65.5k × /64 | APNIC | AU | 10th Apr 2024 |
| 2001:df3:ab80::/48 | 65.5k × /64 | APNIC | BD | 8th May 2020 |
| 2001:df3:ac40::/48 | 65.5k × /64 | APNIC | NP | 11th Apr 2024 |
| 2001:df3:acc0::/48 | 65.5k × /64 | APNIC | MN | 11th Apr 2024 |
| 2001:df3:ad80::/48 | 65.5k × /64 | APNIC | ID | 8th May 2020 |
| 2001:df3:adc0::/48 | 65.5k × /64 | APNIC | IN | 15th Apr 2024 |
| 2001:df3:ae00::/48 | 65.5k × /64 | APNIC | NZ | 29th Jul 2016 |
| 2001:df3:ae40::/48 | 65.5k × /64 | APNIC |  SG | 15th Apr 2024 |
| 2001:df3:af00::/48 | 65.5k × /64 | APNIC | ID | 28th Dec 2017 |
| 2001:df3:af80::/48 | 65.5k × /64 | APNIC | ID | 11th May 2020 |
| 2001:df3:afc0::/48 | 65.5k × /64 | APNIC | VN | 17th Apr 2024 |
| 2001:df3:b000::/48 | 65.5k × /64 | APNIC |  TH | 20th Sept 2013 |
| 2001:df3:b00::/48 | 65.5k × /64 | APNIC | ID | 6th Nov 2017 |
| 2001:df3:b080::/48 | 65.5k × /64 | APNIC | ID | 11th May 2020 |
| 2001:df3:b0c0::/48 | 65.5k × /64 | APNIC | AU | 19th Apr 2024 |
| 2001:df3:b180::/48 | 65.5k × /64 | APNIC | ID | 11th May 2020 |
| 2001:df3:b1c0::/48 | 65.5k × /64 | APNIC | IN | 19th Apr 2024 |
| 2001:df3:b240::/48 | 65.5k × /64 | APNIC | IN | 19th Apr 2024 |
| 2001:df3:b340::/48 | 65.5k × /64 | APNIC | PH | 22nd Apr 2024 |
| 2001:df3:b3c0::/48 | 65.5k × /64 | APNIC | VN | 22nd Apr 2024 |
| 2001:df3:b400::/48 | 65.5k × /64 | APNIC | AU | 22nd Apr 2015 |
| 2001:df3:b40::/48 | 65.5k × /64 | APNIC | IN | 17th Oct 2023 |
| 2001:df3:b440::/48 | 65.5k × /64 | APNIC | VN | 22nd Apr 2024 |