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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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:df6:fd00::/48 | 65.5k × /64 | APNIC |  ID | 16th Oct 2018 |
| 2001:df6:fd40::/48 | 65.5k × /64 | APNIC |  JP | 29th Apr 2026 |
| 2001:df6:fdc0::/48 | 65.5k × /64 | APNIC |  BD | 30th Apr 2026 |
| 2001:df6:fe00::/48 | 65.5k × /64 | APNIC |  AU | 1st Dec 2016 |
| 2001:df6:fe40::/48 | 65.5k × /64 | APNIC | ID | 30th Apr 2026 |
| 2001:df6:fe80::/48 | 65.5k × /64 | APNIC | BD | 8th Jul 2021 |
| 2001:df6:fec0::/48 | 65.5k × /64 | APNIC | ID | 1st May 2026 |
| 2001:df6:ff00::/48 | 65.5k × /64 | APNIC | AU | 16th Oct 2018 |
| 2001:df6:ff40::/48 | 65.5k × /64 | APNIC |  IN | 2nd May 2026 |
| 2001:df6:ff80::/48 | 65.5k × /64 | APNIC | IN | 12th Jul 2021 |
| 2001:df6:ffc0::/48 | 65.5k × /64 | APNIC |  SG | 5th May 2026 |
| 2001:df7:1080::/48 | 65.5k × /64 | APNIC | IN | 22nd Jul 2021 |
| 2001:df7:10c0::/48 | 65.5k × /64 | APNIC | BD | 25th May 2026 |
| 2001:df7:1100::/48 | 65.5k × /64 | APNIC | ID | 26th Oct 2018 |
| 2001:df7:1140::/48 | 65.5k × /64 | APNIC | ID | 25th May 2026 |
| 2001:df7:11c0::/48 | 65.5k × /64 | APNIC | ID | 25th May 2026 |
| 2001:df7:1200::/48 | 65.5k × /64 | APNIC | AU | 5th Dec 2016 |
| 2001:df7:1240::/48 | 65.5k × /64 | APNIC | BD | 25th May 2026 |
| 2001:df7:1280::/48 | 65.5k × /64 | APNIC | ID | 22nd Jul 2021 |
| 2001:df7:12c0::/48 | 65.5k × /64 | APNIC |  PH | 26th May 2026 |
| 2001:df7:1340::/48 | 65.5k × /64 | APNIC |  PK | 26th May 2026 |
| 2001:df7:13c0::/48 | 65.5k × /64 | APNIC |  NP | 27th May 2026 |
| 2001:df7:1400::/48 | 65.5k × /64 | APNIC | AU | 29th Oct 2015 |
| 2001:df7:140::/48 | 65.5k × /64 | APNIC | IN | 5th May 2026 |
| 2001:df7:14c0::/48 | 65.5k × /64 | APNIC | AU | 4th Jun 2026 |
| 2001:df7:1540::/48 | 65.5k × /64 | APNIC | BD | 5th Jun 2026 |
| 2001:df7:1580::/48 | 65.5k × /64 | APNIC | AU | 23rd Jul 2021 |
| 2001:df7:15c0::/48 | 65.5k × /64 | APNIC | ID | 5th Jun 2026 |
| 2001:df7:1640::/48 | 65.5k × /64 | APNIC | BD | 8th Jun 2026 |
| 2001:df7:16c0::/48 | 65.5k × /64 | APNIC | ID | 8th Jun 2026 |
| 2001:df7:1740::/48 | 65.5k × /64 | APNIC |  VN | 9th Jun 2026 |
| 2001:df7:1780::/48 | 65.5k × /64 | APNIC |  HK | 25th Jul 2021 |
| 2001:df7:180::/48 | 65.5k × /64 | APNIC | IN | 13th Jul 2021 |
| 2001:df7:1880::/48 | 65.5k × /64 | APNIC | IN | 26th Jul 2021 |
| 2001:df7:18c0::/48 | 65.5k × /64 | APNIC | NP | 10th Jun 2026 |
| 2001:df7:1980::/48 | 65.5k × /64 | APNIC | IN | 26th Jul 2021 |
| 2001:df7:1a40::/48 | 65.5k × /64 | APNIC | IN | 11th Jun 2026 |
| 2001:df7:1a80::/48 | 65.5k × /64 | APNIC | PH | 27th Jul 2021 |
| 2001:df7:1ac0::/48 | 65.5k × /64 | APNIC | JP | 12th Jun 2026 |
| 2001:df7:1b40::/48 | 65.5k × /64 | APNIC | ID | 12th Jun 2026 |
| 2001:df7:1b80::/48 | 65.5k × /64 | APNIC | BD | 28th Jul 2021 |
| 2001:df7:1bc0::/48 | 65.5k × /64 | APNIC | IN | 12th Jun 2026 |
| 2001:df7:1c00::/48 | 65.5k × /64 | APNIC | ID | 30th Oct 2015 |
| 2001:df7:1c40::/48 | 65.5k × /64 | APNIC | ID | 12th Jun 2026 |
| 2001:df7:1c80::/48 | 65.5k × /64 | APNIC | BD | 28th Jul 2021 |
| 2001:df7:1cc0::/48 | 65.5k × /64 | APNIC | IN | 15th Jun 2026 |
| 2001:df7:1d00::/48 | 65.5k × /64 | APNIC |  NZ | 6th Nov 2018 |
| 2001:df7:1d40::/48 | 65.5k × /64 | APNIC | AU | 16th Jun 2026 |
| 2001:df7:1dc0::/48 | 65.5k × /64 | APNIC | IN | 16th Jun 2026 |
| 2001:df7:1e40::/48 | 65.5k × /64 | APNIC | PH | 17th Jun 2026 |