subnet.im

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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

Browse by country

Countries with unannounced space registered through APNIC, largest first.

Unannounced blocks in Vietnam

822 blocks match, ordered by prefix.

Allocated but unannounced blocks, 401 to 450 of 822
PrefixAddressesRegistryCountryAllocated
2001:df4:9e40::/4865.5k × /64APNICVN13th Nov 2024
2001:df4:9ec0::/4865.5k × /64APNICVN13th Nov 2024
2001:df4:9f40::/4865.5k × /64APNICVN13th Nov 2024
2001:df4:a240::/4865.5k × /64APNICVN19th Nov 2024
2001:df4:a2c0::/4865.5k × /64APNICVN19th Nov 2024
2001:df4:a340::/4865.5k × /64APNICVN19th Nov 2024
2001:df4:a640::/4865.5k × /64APNICVN21st Nov 2024
2001:df4:a940::/4865.5k × /64APNICVN22nd Nov 2024
2001:df4:a9c0::/4865.5k × /64APNICVN22nd Nov 2024
2001:df4:ac0::/4865.5k × /64APNICVN9th Jul 2024
2001:df4:b240::/4865.5k × /64APNICVN30th Nov 2024
2001:df4:b2c0::/4865.5k × /64APNICVN30th Nov 2024
2001:df4:b340::/4865.5k × /64APNICVN30th Nov 2024
2001:df4:b40::/4865.5k × /64APNICVN9th Jul 2024
2001:df4:b440::/4865.5k × /64APNICVN30th Nov 2024
2001:df4:b4c0::/4865.5k × /64APNICVN30th Nov 2024
2001:df4:b840::/4865.5k × /64APNICVN4th Dec 2024
2001:df4:ba40::/4865.5k × /64APNICVN7th Dec 2024
2001:df4:bbc0::/4865.5k × /64APNICVN7th Dec 2024
2001:df4:bc0::/4865.5k × /64APNICVN9th Jul 2024
2001:df4:c400::/4865.5k × /64APNICVN2nd Jul 2015
2001:df4:c9c0::/4865.5k × /64APNICVN19th Dec 2024
2001:df4:cbc0::/4865.5k × /64APNICVN20th Dec 2024
2001:df4:cec0::/4865.5k × /64APNICVN23rd Dec 2024
2001:df4:cfc0::/4865.5k × /64APNICVN24th Dec 2024
2001:df4:d040::/4865.5k × /64APNICVN24th Dec 2024
2001:df4:d200::/4865.5k × /64APNICVN5th Sept 2016
2001:df4:d300::/4865.5k × /64APNICVN10th Apr 2018
2001:df4:d500::/4865.5k × /64APNICVN11th Apr 2018
2001:df4:d5c0::/4865.5k × /64APNICVN30th Dec 2024
2001:df4:d600::/4865.5k × /64APNICVN5th Sept 2016
2001:df4:d7c0::/4865.5k × /64APNICVN31st Dec 2024
2001:df4:d800::/4865.5k × /64APNICVN16th Apr 2014
2001:df4:d8c0::/4865.5k × /64APNICVN31st Dec 2024
2001:df4:dc80::/4865.5k × /64APNICVN17th Sept 2020
2001:df4:dd40::/4865.5k × /64APNICVN5th Jan 2025
2001:df4:ddc0::/4865.5k × /64APNICVN5th Jan 2025
2001:df4:de40::/4865.5k × /64APNICVN5th Jan 2025
2001:df4:e240::/4865.5k × /64APNICVN10th Jan 2025
2001:df4:e280::/4865.5k × /64APNICVN18th Sept 2020
2001:df4:e2c0::/4865.5k × /64APNICVN10th Jan 2025
2001:df4:e380::/4865.5k × /64APNICVN18th Sept 2020
2001:df4:e40::/4865.5k × /64APNICVN11th Jul 2024
2001:df4:e740::/4865.5k × /64APNICVN14th Jan 2025
2001:df4:e7c0::/4865.5k × /64APNICVN14th Jan 2025
2001:df4:e840::/4865.5k × /64APNICVN14th Jan 2025
2001:df4:e8c0::/4865.5k × /64APNICVN14th Jan 2025
2001:df4:eac0::/4865.5k × /64APNICVN16th Jan 2025
2001:df4:eb40::/4865.5k × /64APNICVN16th Jan 2025
2001:df4:ec0::/4865.5k × /64APNICVN11th Jul 2024