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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 unannounced space registered through APNIC, largest first.
Unannounced blocks in Vietnam
844 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 2401:5e20::/32 | 4.3B × /64 | APNIC | 27th Dec 2023 | |
| 2401:7160::/32 | 4.3B × /64 | APNIC | 3rd Jan 2024 | |
| 2401:71a0::/32 | 4.3B × /64 | APNIC | 3rd Jan 2024 | |
| 2401:7220::/32 | 4.3B × /64 | APNIC | 3rd Jan 2024 | |
| 2401:7260::/32 | 4.3B × /64 | APNIC | 3rd Jan 2024 | |
| 2401:75a0::/32 | 4.3B × /64 | APNIC | 15th Jan 2024 | |
| 2401:75e0::/32 | 4.3B × /64 | APNIC | 15th Jan 2024 | |
| 2401:77a0::/32 | 4.3B × /64 | APNIC | 17th Jan 2024 | |
| 2401:7be0::/32 | 4.3B × /64 | APNIC | 31st Jan 2024 | |
| 2401:7c20::/32 | 4.3B × /64 | APNIC | 31st Jan 2024 | |
| 2401:8260::/32 | 4.3B × /64 | APNIC | 22nd Feb 2024 | |
| 2401:8e60::/32 | 4.3B × /64 | APNIC | 28th Mar 2024 | |
| 2401:8f60::/32 | 4.3B × /64 | APNIC | 31st Mar 2024 | |
| 2401:9360::/32 | 4.3B × /64 | APNIC | 11th Apr 2024 | |
| 2401:9560::/32 | 4.3B × /64 | APNIC | 17th Apr 2024 | |
| 2401:98e0::/32 | 4.3B × /64 | APNIC | 2nd May 2024 | |
| 2401:99a0::/32 | 4.3B × /64 | APNIC | 6th May 2024 | |
| 2401:99e0::/32 | 4.3B × /64 | APNIC | 6th May 2024 | |
| 2401:9aa0::/32 | 4.3B × /64 | APNIC | 6th May 2024 | |
| 2401:9ae0::/32 | 4.3B × /64 | APNIC | 6th May 2024 | |
| 2401:9be0::/32 | 4.3B × /64 | APNIC | 8th May 2024 | |
| 2401:9c40::/32 | 4.3B × /64 | APNIC | 8th Aug 2017 | |
| 2401:9ea0::/32 | 4.3B × /64 | APNIC | 14th May 2024 | |
| 2401:9ee0::/32 | 4.3B × /64 | APNIC | 14th May 2024 | |
| 2401:9f60::/32 | 4.3B × /64 | APNIC | 15th May 2024 | |
| 2401:b5c0::/32 | 4.3B × /64 | APNIC | 31st Aug 2017 | |
| 2401:c760::/32 | 4.3B × /64 | APNIC | 25th Sept 2024 | |
| 2401:cca0::/32 | 4.3B × /64 | APNIC | 12th Oct 2024 | |
| 2401:d320::/32 | 4.3B × /64 | APNIC | 4th Nov 2024 | |
| 2401:d460::/32 | 4.3B × /64 | APNIC | 5th Nov 2024 | |
| 2401:d960::/32 | 4.3B × /64 | APNIC | 22nd Nov 2024 | |
| 2401:ea0::/32 | 4.3B × /64 | APNIC | 22nd Jun 2023 | |
| 2401:ee0::/32 | 4.3B × /64 | APNIC | 23rd Jun 2023 | |
| 2401:f2c0::/32 | 4.3B × /64 | APNIC | 3rd Nov 2017 | |
| 2401:fa0::/32 | 4.3B × /64 | APNIC | 23rd Jun 2023 | |
| 2401:fe0::/32 | 4.3B × /64 | APNIC | 23rd Jun 2023 | |
| 2402:2220::/32 | 4.3B × /64 | APNIC | 11th Aug 2025 | |
| 2402:60a0::/32 | 4.3B × /64 | APNIC | 1st Jun 2026 | |
| 2402:6aa0::/32 | 4.3B × /64 | APNIC | 30th Jul 2026 | |
| 2402:6c60::/32 | 4.3B × /64 | APNIC | 5th Aug 2026 | |
| 2402:b40::/32 | 4.3B × /64 | APNIC | 23rd Nov 2017 | |
| 2402:c700::/32 | 4.3B × /64 | APNIC | 29th Dec 2011 | |
| 2403:b3c0::/32 | 4.3B × /64 | APNIC | 4th Oct 2018 | |
| 2403:bfc0::/32 | 4.3B × /64 | APNIC | 11th Oct 2018 | |
| 2404:26c0::/32 | 4.3B × /64 | APNIC | 24th Dec 2018 | |
| 2404:91c0::/32 | 4.3B × /64 | APNIC | 7th Mar 2019 | |
| 2404:a040::/32 | 4.3B × /64 | APNIC | 14th Mar 2019 | |
| 2404:b6c0::/32 | 4.3B × /64 | APNIC | 3rd Apr 2019 | |
| 2404:b740::/32 | 4.3B × /64 | APNIC | 3rd Apr 2019 | |
| 2404:b7c0::/32 | 4.3B × /64 | APNIC | 3rd Apr 2019 |