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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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.
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Countries with the most unannounced blocks, largest first.
Unannounced blocks
84,419 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 2402:74e0::/32 | 4.3B × /64 | APNIC |  TW | 8th Sept 2026 |
| 2402:7520::/32 | 4.3B × /64 | APNIC |  PK | 9th Sept 2026 |
| 2402:7540::/32 | 4.3B × /64 | APNIC |  CN | 8th Feb 2018 |
| 2402:7560::/32 | 4.3B × /64 | APNIC |  IN | 10th Sept 2026 |
| 2402:75c0::/32 | 4.3B × /64 | APNIC | CN | 8th Feb 2018 |
| 2402:75e0::/32 | 4.3B × /64 | APNIC |  JP | 13th Sept 2026 |
| 2402:7600::/32 | 4.3B × /64 | APNIC |  AU | 18th May 2010 |
| 2402:760::/32 | 4.3B × /64 | APNIC |  PH | 6th May 2025 |
| 2402:7620::/32 | 4.3B × /64 | APNIC | PH | 16th Sept 2026 |
| 2402:7640::/32 | 4.3B × /64 | APNIC |  ID | 8th Feb 2018 |
| 2402:7660::/32 | 4.3B × /64 | APNIC | PK | 16th Sept 2026 |
| 2402:7680::/32 | 4.3B × /64 | APNIC | AU | 12th Jun 2015 |
| 2402:76a0::/32 | 4.3B × /64 | APNIC | AU | 17th Sept 2026 |
| 2402:7720::/32 | 4.3B × /64 | APNIC | IN | 17th Sept 2026 |
| 2402:7740::/32 | 4.3B × /64 | APNIC | CN | 11th Feb 2018 |
| 2402:7760::/32 | 4.3B × /64 | APNIC | PH | 18th Sept 2026 |
| 2402:77a0::/32 | 4.3B × /64 | APNIC | IN | 23rd Sept 2026 |
| 2402:77c0::/32 | 4.3B × /64 | APNIC |  BD | 12th Feb 2018 |
| 2402:7820::/32 | 4.3B × /64 | APNIC | CN | 23rd Sept 2026 |
| 2402:7860::/32 | 4.3B × /64 | APNIC | IN | 24th Sept 2026 |
| 2402:7880::/32 | 4.3B × /64 | APNIC |  SG | 17th Jun 2015 |
| 2402:78a0::/32 | 4.3B × /64 | APNIC |  MY | 27th Sept 2026 |
| 2402:7900::/32 | 4.3B × /64 | APNIC | AU | 9th Nov 2011 |
| 2402:7960::/32 | 4.3B × /64 | APNIC | PK | 28th Sept 2026 |
| 2402:79a0::/32 | 4.3B × /64 | APNIC | IN | 28th Sept 2026 |
| 2402:7a80::/32 | 4.3B × /64 | APNIC |  NZ | 18th Jun 2015 |
| 2402:7aa0::/32 | 4.3B × /64 | APNIC |  US | 30th Sept 2026 |
| 2402:7ae0::/32 | 4.3B × /64 | APNIC |  KH | 30th Sept 2026 |
| 2402:7b20::/32 | 4.3B × /64 | APNIC | IN | 30th Sept 2026 |
| 2402:7b60::/32 | 4.3B × /64 | APNIC | IN | 1st Oct 2026 |
| 2402:7b80::/32 | 4.3B × /64 | APNIC | AU | 19th Jun 2015 |
| 2402:7ba0::/32 | 4.3B × /64 | APNIC | BD | 4th Oct 2026 |
| 2402:7bc0::/32 | 4.3B × /64 | APNIC | AU | 15th Feb 2018 |
| 2402:7be0::/32 | 4.3B × /64 | APNIC | IN | 5th Oct 2026 |
| 2402:7c00::/32 | 4.3B × /64 | APNIC | PK | 23rd Oct 2009 |
| 2402:7c0::/32 | 4.3B × /64 | APNIC | NZ | 21st Nov 2017 |
| 2402:7c20::/32 | 4.3B × /64 | APNIC | PK | 6th Oct 2026 |
| 2402:7c40::/32 | 4.3B × /64 | APNIC | AU | 15th Feb 2018 |
| 2402:7c60::/32 | 4.3B × /64 | APNIC | AU | 7th Oct 2026 |
| 2402:7ca0::/32 | 4.3B × /64 | APNIC | BD | 8th Oct 2026 |
| 2402:7d00::/32 | 4.3B × /64 | APNIC | CN | 11th Nov 2011 |
| 2402:7d60::/32 | 4.3B × /64 | APNIC |  BN | 9th Oct 2026 |
| 2402:7da0::/32 | 4.3B × /64 | APNIC | CN | 9th Oct 2026 |
| 2402:7de0::/32 | 4.3B × /64 | APNIC | TW | 12th Oct 2026 |
| 2402:7e20::/32 | 4.3B × /64 | APNIC | CN | 12th Oct 2026 |
| 2402:7e60::/32 | 4.3B × /64 | APNIC |  NP | 13th Oct 2026 |
| 2402:7e80::/32 | 4.3B × /64 | APNIC | AU | 25th Jun 2015 |
| 2402:7ea0::/32 | 4.3B × /64 | APNIC |  MM | 14th Oct 2026 |
| 2402:7ec0::/32 | 4.3B × /64 | APNIC | MM | 20th Feb 2018 |
| 2402:7ee0::/32 | 4.3B × /64 | APNIC | CN | 15th Oct 2026 |