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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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
85,310 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 2402:24c0::/32 | 4.3B × /64 | APNIC |  CN | 4th Dec 2017 |
| 2402:24e0::/32 | 4.3B × /64 | APNIC |  BD | 20th Aug 2025 |
| 2402:2540::/32 | 4.3B × /64 | APNIC | CN | 4th Dec 2017 |
| 2402:2580::/32 | 4.3B × /64 | APNIC |  TW | 17th Mar 2015 |
| 2402:25a0::/32 | 4.3B × /64 | APNIC |  IN | 26th Aug 2025 |
| 2402:25e0::/32 | 4.3B × /64 | APNIC | BD | 27th Aug 2025 |
| 2402:2640::/32 | 4.3B × /64 | APNIC | CN | 4th Dec 2017 |
| 2402:2680::/32 | 4.3B × /64 | APNIC |  ID | 17th Mar 2015 |
| 2402:26a0::/32 | 4.3B × /64 | APNIC |  AU | 1st Sept 2025 |
| 2402:26c0::/32 | 4.3B × /64 | APNIC |  HK | 4th Dec 2017 |
| 2402:2720::/32 | 4.3B × /64 | APNIC |  MN | 2nd Sept 2025 |
| 2402:2760::/32 | 4.3B × /64 | APNIC | CN | 2nd Sept 2025 |
| 2402:27a0::/32 | 4.3B × /64 | APNIC | BD | 4th Sept 2025 |
| 2402:27e0::/32 | 4.3B × /64 | APNIC |  PK | 4th Sept 2025 |
| 2402:2800::/32 | 4.3B × /64 | APNIC | IN | 19th Jun 2008 |
| 2402:2860::/32 | 4.3B × /64 | APNIC | TW | 9th Sept 2025 |
| 2402:2880::/32 | 4.3B × /64 | APNIC |  AF | 18th Mar 2015 |
| 2402:28a0::/32 | 4.3B × /64 | APNIC | TW | 9th Sept 2025 |
| 2402:28e0::/32 | 4.3B × /64 | APNIC | TW | 9th Sept 2025 |
| 2402:2920::/32 | 4.3B × /64 | APNIC | BD | 9th Sept 2025 |
| 2402:2960::/32 | 4.3B × /64 | APNIC | AU | 10th Sept 2025 |
| 2402:29a0::/32 | 4.3B × /64 | APNIC | IN | 10th Sept 2025 |
| 2402:2a00::/32 | 4.3B × /64 | APNIC | CN | 7th May 2010 |
| 2402:2a60::/32 | 4.3B × /64 | APNIC |  MY | 11th Sept 2025 |
| 2402:2a80::/32 | 4.3B × /64 | APNIC | HK | 20th Mar 2015 |
| 2402:2aa0::/32 | 4.3B × /64 | APNIC |  PH | 12th Sept 2025 |
| 2402:2ac0::/32 | 4.3B × /64 | APNIC | IN | 5th Dec 2017 |
| 2402:2b00::/32 | 4.3B × /64 | APNIC | AU | 10th Oct 2011 |
| 2402:2b60::/32 | 4.3B × /64 | APNIC | ID | 15th Sept 2025 |
| 2402:2b80::/32 | 4.3B × /64 | APNIC | CN | 23rd Mar 2015 |
| 2402:2bc0::/32 | 4.3B × /64 | APNIC | CN | 6th Dec 2017 |
| 2402:2be0::/32 | 4.3B × /64 | APNIC | IN | 16th Sept 2025 |
| 2402:2ca0::/32 | 4.3B × /64 | APNIC | CN | 19th Sept 2025 |
| 2402:2cc0::/32 | 4.3B × /64 | APNIC | BD | 7th Dec 2017 |
| 2402:2d00::/32 | 4.3B × /64 | APNIC | CN | 10th Oct 2011 |
| 2402:2d20::/32 | 4.3B × /64 | APNIC | AU | 21st Sept 2025 |
| 2402:2d60::/32 | 4.3B × /64 | APNIC | BD | 22nd Sept 2025 |
| 2402:2d80::/32 | 4.3B × /64 | APNIC | CN | 26th Mar 2015 |
| 2402:2e20::/32 | 4.3B × /64 | APNIC | TW | 25th Sept 2025 |
| 2402:2e60::/32 | 4.3B × /64 | APNIC | CN | 28th Sept 2025 |
| 2402:2e80::/32 | 4.3B × /64 | APNIC | CN | 26th Mar 2015 |
| 2402:2ee0::/32 | 4.3B × /64 | APNIC |  MM | 30th Sept 2025 |
| 2402:2f40::/32 | 4.3B × /64 | APNIC | CN | 8th Dec 2017 |
| 2402:2fa0::/32 | 4.3B × /64 | APNIC | PK | 1st Oct 2025 |
| 2402:2fc0::/32 | 4.3B × /64 | APNIC | ID | 8th Dec 2017 |
| 2402:2fe0::/32 | 4.3B × /64 | APNIC | IN | 2nd Oct 2025 |
| 2402:3040::/32 | 4.3B × /64 | APNIC | CN | 11th Dec 2017 |
| 2402:30a0::/32 | 4.3B × /64 | APNIC | TW | 7th Oct 2025 |
| 2402:3100::/32 | 4.3B × /64 | APNIC |  KR | 11th Oct 2011 |
| 2402:3140::/32 | 4.3B × /64 | APNIC | CN | 12th Dec 2017 |