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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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
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Countries with the most unannounced blocks, largest first.
Unannounced blocks
85,458 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 2001:df7:4cc0::/48 | 65.5k × /64 | APNIC |  ID | 31st Jul 2026 |
| 2001:df7:4d00::/48 | 65.5k × /64 | APNIC |  AU | 5th Dec 2018 |
| 2001:df7:4d40::/48 | 65.5k × /64 | APNIC | ID | 31st Jul 2026 |
| 2001:df7:4dc0::/48 | 65.5k × /64 | APNIC |  IN | 2nd Aug 2026 |
| 2001:df7:4e00::/48 | 65.5k × /64 | APNIC | AU | 9th Dec 2016 |
| 2001:df7:4e40::/48 | 65.5k × /64 | APNIC | ID | 3rd Aug 2026 |
| 2001:df7:4e80::/48 | 65.5k × /64 | APNIC | IN | 14th Aug 2021 |
| 2001:df7:4ec0::/48 | 65.5k × /64 | APNIC | ID | 3rd Aug 2026 |
| 2001:df7:4f00::/48 | 65.5k × /64 | APNIC | AU | 5th Dec 2018 |
| 2001:df7:4f40::/48 | 65.5k × /64 | APNIC | ID | 3rd Aug 2026 |
| 2001:df7:4fc0::/48 | 65.5k × /64 | APNIC |  BD | 3rd Aug 2026 |
| 2001:df7:5000::/48 | 65.5k × /64 | APNIC | IN | 8th Nov 2013 |
| 2001:df7:500::/48 | 65.5k × /64 | APNIC |  WS | 17th Oct 2018 |
| 2001:df7:5040::/48 | 65.5k × /64 | APNIC |  NZ | 4th Aug 2026 |
| 2001:df7:50c0::/48 | 65.5k × /64 | APNIC |  TH | 4th Aug 2026 |
| 2001:df7:5140::/48 | 65.5k × /64 | APNIC | IN | 4th Aug 2026 |
| 2001:df7:5180::/48 | 65.5k × /64 | APNIC | IN | 16th Aug 2021 |
| 2001:df7:51c0::/48 | 65.5k × /64 | APNIC | ID | 5th Aug 2026 |
| 2001:df7:5200::/48 | 65.5k × /64 | APNIC |  NP | 13th Dec 2016 |
| 2001:df7:5240::/48 | 65.5k × /64 | APNIC | ID | 5th Aug 2026 |
| 2001:df7:52c0::/48 | 65.5k × /64 | APNIC | ID | 5th Aug 2026 |
| 2001:df7:5340::/48 | 65.5k × /64 | APNIC |  VN | 5th Aug 2026 |
| 2001:df7:53c0::/48 | 65.5k × /64 | APNIC | VN | 5th Aug 2026 |
| 2001:df7:5480::/48 | 65.5k × /64 | APNIC | BD | 18th Aug 2021 |
| 2001:df7:54c0::/48 | 65.5k × /64 | APNIC | IN | 6th Aug 2026 |
| 2001:df7:5500::/48 | 65.5k × /64 | APNIC |  HK | 7th Dec 2018 |
| 2001:df7:55c0::/48 | 65.5k × /64 | APNIC | HK | 7th Aug 2026 |
| 2001:df7:5640::/48 | 65.5k × /64 | APNIC | ID | 7th Aug 2026 |
| 2001:df7:56c0::/48 | 65.5k × /64 | APNIC | VN | 7th Aug 2026 |
| 2001:df7:5700::/48 | 65.5k × /64 | APNIC | BD | 10th Dec 2018 |
| 2001:df7:5740::/48 | 65.5k × /64 | APNIC | VN | 7th Aug 2026 |
| 2001:df7:5780::/48 | 65.5k × /64 | APNIC |  PK | 18th Aug 2021 |
| 2001:df7:57c0::/48 | 65.5k × /64 | APNIC | ID | 10th Aug 2026 |
| 2001:df7:5840::/48 | 65.5k × /64 | APNIC | ID | 10th Aug 2026 |
| 2001:df7:5880::/48 | 65.5k × /64 | APNIC |  PH | 19th Aug 2021 |
| 2001:df7:58c0::/48 | 65.5k × /64 | APNIC | BD | 10th Aug 2026 |
| 2001:df7:5940::/48 | 65.5k × /64 | APNIC | ID | 10th Aug 2026 |
| 2001:df7:5980::/48 | 65.5k × /64 | APNIC |  MY | 19th Aug 2021 |
| 2001:df7:59c0::/48 | 65.5k × /64 | APNIC | ID | 10th Aug 2026 |
| 2001:df7:5a00::/48 | 65.5k × /64 | APNIC | ID | 13th Dec 2016 |
| 2001:df7:5a40::/48 | 65.5k × /64 | APNIC | ID | 12th Aug 2026 |
| 2001:df7:5ac0::/48 | 65.5k × /64 | APNIC | AU | 13th Aug 2026 |
| 2001:df7:5b00::/48 | 65.5k × /64 | APNIC | AU | 12th Dec 2018 |
| 2001:df7:5b40::/48 | 65.5k × /64 | APNIC | ID | 13th Aug 2026 |
| 2001:df7:5bc0::/48 | 65.5k × /64 | APNIC | AU | 13th Aug 2026 |
| 2001:df7:5c0::/48 | 65.5k × /64 | APNIC | IN | 9th May 2026 |
| 2001:df7:5c40::/48 | 65.5k × /64 | APNIC | ID | 14th Aug 2026 |
| 2001:df7:5c80::/48 | 65.5k × /64 | APNIC |  PG | 20th Aug 2021 |
| 2001:df7:5cc0::/48 | 65.5k × /64 | APNIC | ID | 14th Aug 2026 |
| 2001:df7:5d40::/48 | 65.5k × /64 | APNIC | NP | 14th Aug 2026 |