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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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:df4:8e40::/48 | 65.5k × /64 | APNIC |  ID | 5th Nov 2024 |
| 2001:df4:8f00::/48 | 65.5k × /64 | APNIC | ID | 21st Mar 2018 |
| 2001:df4:8f40::/48 | 65.5k × /64 | APNIC |  BD | 6th Nov 2024 |
| 2001:df4:8f80::/48 | 65.5k × /64 | APNIC | BD | 13th Aug 2020 |
| 2001:df4:8fc0::/48 | 65.5k × /64 | APNIC | ID | 6th Nov 2024 |
| 2001:df4:9000::/48 | 65.5k × /64 | APNIC |  SG | 2nd Oct 2013 |
| 2001:df4:900::/48 | 65.5k × /64 | APNIC | ID | 30th Jan 2018 |
| 2001:df4:9040::/48 | 65.5k × /64 | APNIC | BD | 6th Nov 2024 |
| 2001:df4:9080::/48 | 65.5k × /64 | APNIC | BD | 13th Aug 2020 |
| 2001:df4:9100::/48 | 65.5k × /64 | APNIC | ID | 21st Mar 2018 |
| 2001:df4:9140::/48 | 65.5k × /64 | APNIC | ID | 8th Nov 2024 |
| 2001:df4:9180::/48 | 65.5k × /64 | APNIC |  VN | 14th Aug 2020 |
| 2001:df4:91c0::/48 | 65.5k × /64 | APNIC | ID | 8th Nov 2024 |
| 2001:df4:9240::/48 | 65.5k × /64 | APNIC | ID | 8th Nov 2024 |
| 2001:df4:9280::/48 | 65.5k × /64 | APNIC | ID | 14th Aug 2020 |
| 2001:df4:92c0::/48 | 65.5k × /64 | APNIC | ID | 8th Nov 2024 |
| 2001:df4:9340::/48 | 65.5k × /64 | APNIC | BD | 10th Nov 2024 |
| 2001:df4:9380::/48 | 65.5k × /64 | APNIC | VN | 14th Aug 2020 |
| 2001:df4:9440::/48 | 65.5k × /64 | APNIC | VN | 11th Nov 2024 |
| 2001:df4:94c0::/48 | 65.5k × /64 | APNIC | VN | 11th Nov 2024 |
| 2001:df4:9540::/48 | 65.5k × /64 | APNIC | VN | 11th Nov 2024 |
| 2001:df4:9580::/48 | 65.5k × /64 | APNIC | VN | 14th Aug 2020 |
| 2001:df4:95c0::/48 | 65.5k × /64 | APNIC | VN | 11th Nov 2024 |
| 2001:df4:9600::/48 | 65.5k × /64 | APNIC |  AU | 2nd Sept 2016 |
| 2001:df4:9640::/48 | 65.5k × /64 | APNIC | VN | 11th Nov 2024 |
| 2001:df4:9680::/48 | 65.5k × /64 | APNIC | ID | 14th Aug 2020 |
| 2001:df4:9700::/48 | 65.5k × /64 | APNIC | VN | 21st Mar 2018 |
| 2001:df4:97c0::/48 | 65.5k × /64 | APNIC | VN | 12th Nov 2024 |
| 2001:df4:9800::/48 | 65.5k × /64 | APNIC | ID | 8th Apr 2014 |
| 2001:df4:980::/48 | 65.5k × /64 | APNIC | BD | 22nd Jun 2020 |
| 2001:df4:9840::/48 | 65.5k × /64 | APNIC | ID | 13th Nov 2024 |
| 2001:df4:98c0::/48 | 65.5k × /64 | APNIC | ID | 13th Nov 2024 |
| 2001:df4:9900::/48 | 65.5k × /64 | APNIC | ID | 21st Mar 2018 |
| 2001:df4:9940::/48 | 65.5k × /64 | APNIC | VN | 13th Nov 2024 |
| 2001:df4:99c0::/48 | 65.5k × /64 | APNIC | AU | 13th Nov 2024 |
| 2001:df4:9a00::/48 | 65.5k × /64 | APNIC | AU | 2nd Sept 2016 |
| 2001:df4:9a40::/48 | 65.5k × /64 | APNIC | ID | 13th Nov 2024 |
| 2001:df4:9a80::/48 | 65.5k × /64 | APNIC | ID | 18th Aug 2020 |
| 2001:df4:9b00::/48 | 65.5k × /64 | APNIC |  IN | 23rd Mar 2018 |
| 2001:df4:9b40::/48 | 65.5k × /64 | APNIC | VN | 13th Nov 2024 |
| 2001:df4:9b80::/48 | 65.5k × /64 | APNIC | ID | 18th Aug 2020 |
| 2001:df4:9bc0::/48 | 65.5k × /64 | APNIC | VN | 13th Nov 2024 |
| 2001:df4:9c0::/48 | 65.5k × /64 | APNIC | IN | 8th Jul 2024 |
| 2001:df4:9c40::/48 | 65.5k × /64 | APNIC | VN | 13th Nov 2024 |
| 2001:df4:9c80::/48 | 65.5k × /64 | APNIC | ID | 18th Aug 2020 |
| 2001:df4:9cc0::/48 | 65.5k × /64 | APNIC | VN | 13th Nov 2024 |
| 2001:df4:9d00::/48 | 65.5k × /64 | APNIC |  TW | 26th Mar 2018 |
| 2001:df4:9d40::/48 | 65.5k × /64 | APNIC | VN | 13th Nov 2024 |
| 2001:df4:9d80::/48 | 65.5k × /64 | APNIC | ID | 18th Aug 2020 |
| 2001:df4:9dc0::/48 | 65.5k × /64 | APNIC | VN | 13th Nov 2024 |