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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 the most unannounced blocks, largest first.

Unannounced blocks in Vietnam

827 blocks match, ordered by prefix.

Allocated but unannounced blocks, 501 to 550 of 827
PrefixAddressesRegistryCountryAllocated
2001:df5:d140::/4865.5k × /64APNICVN2nd Jul 2025
2001:df5:d40::/4865.5k × /64APNICVN6th Feb 2025
2001:df5:d740::/4865.5k × /64APNICVN9th Jul 2025
2001:df5:dbc0::/4865.5k × /64APNICVN14th Jul 2025
2001:df5:dc0::/4865.5k × /64APNICVN6th Feb 2025
2001:df5:e080::/4865.5k × /64APNICVN25th Jan 2021
2001:df5:e6c0::/4865.5k × /64APNICVN23rd Jul 2025
2001:df5:e940::/4865.5k × /64APNICVN28th Jul 2025
2001:df5:ed40::/4865.5k × /64APNICVN30th Jul 2025
2001:df5:f3c0::/4865.5k × /64APNICVN6th Aug 2025
2001:df5:f7c0::/4865.5k × /64APNICVN11th Aug 2025
2001:df5:fb40::/4865.5k × /64APNICVN12th Aug 2025
2001:df5:fe40::/4865.5k × /64APNICVN18th Aug 2025
2001:df6:1600::/4865.5k × /64APNICVN1st Nov 2016
2001:df6:1680::/4865.5k × /64APNICVN26th Feb 2021
2001:df6:1a00::/4865.5k × /64APNICVN1st Nov 2016
2001:df6:1d80::/4865.5k × /64APNICVN1st Mar 2021
2001:df6:2880::/4865.5k × /64APNICVN4th Mar 2021
2001:df6:2c00::/4865.5k × /64APNICVN15th Sept 2015
2001:df6:3400::/4865.5k × /64APNICVN15th Sept 2015
2001:df6:4680::/4865.5k × /64APNICVN18th Mar 2021
2001:df6:46c0::/4865.5k × /64APNICVN5th Nov 2025
2001:df6:4980::/4865.5k × /64APNICVN19th Mar 2021
2001:df6:4a80::/4865.5k × /64APNICVN19th Mar 2021
2001:df6:4d80::/4865.5k × /64APNICVN22nd Mar 2021
2001:df6:50c0::/4865.5k × /64APNICVN13th Nov 2025
2001:df6:5b40::/4865.5k × /64APNICVN24th Nov 2025
2001:df6:60c0::/4865.5k × /64APNICVN1st Dec 2025
2001:df6:6d00::/4865.5k × /64APNICVN5th Sept 2018
2001:df6:7000::/4865.5k × /64APNICVN23rd Oct 2013
2001:df6:77c0::/4865.5k × /64APNICVN19th Dec 2025
2001:df6:9780::/4865.5k × /64APNICVN29th Apr 2021
2001:df6:a1c0::/4865.5k × /64APNICVN26th Jan 2026
2001:df6:a3c0::/4865.5k × /64APNICVN28th Jan 2026
2001:df6:a540::/4865.5k × /64APNICVN29th Jan 2026
2001:df6:aa00::/4865.5k × /64APNICVN18th Nov 2016
2001:df6:aac0::/4865.5k × /64APNICVN2nd Feb 2026
2001:df6:ac80::/4865.5k × /64APNICVN19th May 2021
2001:df6:bf80::/4865.5k × /64APNICVN1st Jun 2021
2001:df6:ce40::/4865.5k × /64APNICVN10th Mar 2026
2001:df6:cf80::/4865.5k × /64APNICVN11th Jun 2021
2001:df6:db00::/4865.5k × /64APNICVN4th Oct 2018
2001:df6:dd00::/4865.5k × /64APNICVN4th Oct 2018
2001:df6:f540::/4865.5k × /64APNICVN21st Apr 2026
2001:df7:1740::/4865.5k × /64APNICVN9th Jun 2026
2001:df7:3f80::/4865.5k × /64APNICVN10th Aug 2021
2001:df7:4080::/4865.5k × /64APNICVN10th Aug 2021
2001:df7:47c0::/4865.5k × /64APNICVN29th Jul 2026
2001:df7:4840::/4865.5k × /64APNICVN29th Jul 2026
2001:df7:4900::/4865.5k × /64APNICVN4th Dec 2018