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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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, 451 to 500 of 822
PrefixAddressesRegistryCountryAllocated
2001:df4:ee40::/4865.5k × /64APNICVN19th Jan 2025
2001:df4:eec0::/4865.5k × /64APNICVN19th Jan 2025
2001:df4:ef40::/4865.5k × /64APNICVN19th Jan 2025
2001:df4:f540::/4865.5k × /64APNICVN21st Jan 2025
2001:df4:f5c0::/4865.5k × /64APNICVN21st Jan 2025
2001:df4:fc40::/4865.5k × /64APNICVN23rd Jan 2025
2001:df5:1ac0::/4865.5k × /64APNICVN18th Feb 2025
2001:df5:1b40::/4865.5k × /64APNICVN18th Feb 2025
2001:df5:26c0::/4865.5k × /64APNICVN26th Feb 2025
2001:df5:2bc0::/4865.5k × /64APNICVN4th Mar 2025
2001:df5:2c40::/4865.5k × /64APNICVN4th Mar 2025
2001:df5:2d40::/4865.5k × /64APNICVN4th Mar 2025
2001:df5:2dc0::/4865.5k × /64APNICVN4th Mar 2025
2001:df5:3080::/4865.5k × /64APNICVN27th Oct 2020
2001:df5:43c0::/4865.5k × /64APNICVN19th Mar 2025
2001:df5:4840::/4865.5k × /64APNICVN24th Mar 2025
2001:df5:4900::/4865.5k × /64APNICVN30th May 2018
2001:df5:4a00::/4865.5k × /64APNICVN21st Sept 2016
2001:df5:4ac0::/4865.5k × /64APNICVN27th Mar 2025
2001:df5:4b00::/4865.5k × /64APNICVN30th May 2018
2001:df5:4dc0::/4865.5k × /64APNICVN1st Apr 2025
2001:df5:4ec0::/4865.5k × /64APNICVN2nd Apr 2025
2001:df5:54c0::/4865.5k × /64APNICVN8th Apr 2025
2001:df5:5ac0::/4865.5k × /64APNICVN14th Apr 2025
2001:df5:7340::/4865.5k × /64APNICVN26th Apr 2025
2001:df5:73c0::/4865.5k × /64APNICVN26th Apr 2025
2001:df5:7680::/4865.5k × /64APNICVN25th Nov 2020
2001:df5:7cc0::/4865.5k × /64APNICVN5th May 2025
2001:df5:82c0::/4865.5k × /64APNICVN7th May 2025
2001:df5:8340::/4865.5k × /64APNICVN7th May 2025
2001:df5:8a00::/4865.5k × /64APNICVN6th Oct 2016
2001:df5:9240::/4865.5k × /64APNICVN20th May 2025
2001:df5:980::/4865.5k × /64APNICVN8th Oct 2020
2001:df5:9a40::/4865.5k × /64APNICVN26th May 2025
2001:df5:a540::/4865.5k × /64APNICVN2nd Jun 2025
2001:df5:b1c0::/4865.5k × /64APNICVN9th Jun 2025
2001:df5:b240::/4865.5k × /64APNICVN9th Jun 2025
2001:df5:bb00::/4865.5k × /64APNICVN4th Jul 2018
2001:df5:bdc0::/4865.5k × /64APNICVN16th Jun 2025
2001:df5:c1c0::/4865.5k × /64APNICVN19th Jun 2025
2001:df5:c200::/4865.5k × /64APNICVN17th Oct 2016
2001:df5:c240::/4865.5k × /64APNICVN19th Jun 2025
2001:df5:c2c0::/4865.5k × /64APNICVN19th Jun 2025
2001:df5:c340::/4865.5k × /64APNICVN19th Jun 2025
2001:df5:c3c0::/4865.5k × /64APNICVN19th Jun 2025
2001:df5:c440::/4865.5k × /64APNICVN19th Jun 2025
2001:df5:cc40::/4865.5k × /64APNICVN30th Jun 2025
2001:df5:cd80::/4865.5k × /64APNICVN13th Jan 2021
2001:df5:d040::/4865.5k × /64APNICVN2nd Jul 2025
2001:df5:d0c0::/4865.5k × /64APNICVN2nd Jul 2025