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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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, 201 to 250 of 822
PrefixAddressesRegistryCountryAllocated
165.99.232.0/23512APNICVN9th Jun 2025
165.99.96.0/23512APNICVN20th May 2025
175.103.64.0/1816.4kAPNICVN11th Apr 2011
182.161.80.0/204.1kAPNICVN9th Apr 2010
2001:7fa:6::/4865.5k × /64APNICVN27th Oct 2004
2001:de8:3::/4865.5k × /64APNICVN20th Nov 2008
2001:de8:a::/4865.5k × /64APNICVN20th Nov 2008
2001:df0:10::/47131k × /64APNICVN11th Jun 2008
2001:df0:12::/4865.5k × /64APNICVN12th Jun 2008
2001:df0:1380::/4865.5k × /64APNICVN18th Mar 2019
2001:df0:17c0::/4865.5k × /64APNICVN24th Nov 2021
2001:df0:1a40::/4865.5k × /64APNICVN25th Nov 2021
2001:df0:1c::/4865.5k × /64APNICVN15th Aug 2008
2001:df0:1d::/4865.5k × /64APNICVN15th Aug 2008
2001:df0:2040::/4865.5k × /64APNICVN30th Nov 2021
2001:df0:221::/4865.5k × /64APNICVN6th May 2011
2001:df0:2740::/4865.5k × /64APNICVN6th Dec 2021
2001:df0:29c::/4865.5k × /64APNICVN21st Feb 2012
2001:df0:3782::/47131k × /64APNICVN14th Jun 2019
2001:df0:3880::/4865.5k × /64APNICVN19th Apr 2019
2001:df0:3dc0::/4865.5k × /64APNICVN29th Dec 2021
2001:df0:3fc0::/4865.5k × /64APNICVN30th Dec 2021
2001:df0:40::/4865.5k × /64APNICVN4th Sept 2008
2001:df0:40c0::/4865.5k × /64APNICVN30th Dec 2021
2001:df0:4140::/4865.5k × /64APNICVN30th Dec 2021
2001:df0:50c0::/4865.5k × /64APNICVN17th Jan 2022
2001:df0:5140::/4865.5k × /64APNICVN17th Jan 2022
2001:df0:5940::/4865.5k × /64APNICVN24th Jan 2022
2001:df0:5b40::/4865.5k × /64APNICVN26th Jan 2022
2001:df0:5c40::/4865.5k × /64APNICVN26th Jan 2022
2001:df0:5cc0::/4865.5k × /64APNICVN26th Jan 2022
2001:df0:6280::/4865.5k × /64APNICVN13th May 2019
2001:df0:6980::/4865.5k × /64APNICVN14th May 2019
2001:df0:8280::/4865.5k × /64APNICVN28th May 2019
2001:df0:8380::/4865.5k × /64APNICVN28th May 2019
2001:df0:8480::/4865.5k × /64APNICVN28th May 2019
2001:df0:86c0::/4865.5k × /64APNICVN10th Mar 2022
2001:df0:8ac0::/4865.5k × /64APNICVN16th Mar 2022
2001:df0:9080::/4865.5k × /64APNICVN4th Jun 2019
2001:df0:9b00::/4865.5k × /64APNICVN21st Mar 2017
2001:df0:aa40::/4865.5k × /64APNICVN20th Apr 2022
2001:df0:ad40::/4865.5k × /64APNICVN25th Apr 2022
2001:df0:adc0::/4865.5k × /64APNICVN25th Apr 2022
2001:df0:c440::/4865.5k × /64APNICVN25th May 2022
2001:df0:c4c0::/4865.5k × /64APNICVN25th May 2022
2001:df0:c::/4865.5k × /64APNICVN10th Jun 2008
2001:df0:cd40::/4865.5k × /64APNICVN7th Jun 2022
2001:df0:eb40::/4865.5k × /64APNICVN1st Jul 2022
2001:df0:f0c0::/4865.5k × /64APNICVN6th Jul 2022
2001:df0:f140::/4865.5k × /64APNICVN6th Jul 2022