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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

495 blocks match, ordered by prefix.

Allocated but unannounced blocks, 201 to 250 of 495
PrefixAddressesRegistryCountryAllocated
2001:df0:4c80::/4865.5k × /64APNICSG1st May 2019
2001:df0:5a40::/4865.5k × /64APNICSG25th Jan 2022
2001:df0:6600::/4865.5k × /64APNICSG27th Jan 2016
2001:df0:7180::/4865.5k × /64APNICSG17th May 2019
2001:df0:7680::/4865.5k × /64APNICSG21st May 2019
2001:df0:7e00::/4865.5k × /64APNICSG2nd Feb 2016
2001:df0:aa00::/4865.5k × /64APNICSG11th Feb 2016
2001:df0:afc0::/4865.5k × /64APNICSG28th Apr 2022
2001:df0:b200::/4865.5k × /64APNICSG12th Feb 2016
2001:df0:c6::/4865.5k × /64APNICSG30th Sept 2010
2001:df0:e040::/4865.5k × /64APNICSG22nd Jun 2022
2001:df0:e600::/4865.5k × /64APNICSG26th Feb 2016
2001:df0:f6c0::/4865.5k × /64APNICSG12th Jul 2022
2001:df1:18c0::/4865.5k × /64APNICSG8th Aug 2022
2001:df1:4900::/4865.5k × /64APNICSG25th May 2017
2001:df1:4980::/4865.5k × /64APNICSG29th Aug 2019
2001:df1:5d00::/4865.5k × /64APNICSG6th Jun 2017
2001:df1:6f80::/4865.5k × /64APNICSG16th Sept 2019
2001:df1:99c0::/4865.5k × /64APNICSG29th Nov 2022
2001:df1:a300::/4865.5k × /64APNICSG19th Jun 2017
2001:df1:db80::/4865.5k × /64APNICSG1st Nov 2019
2001:df2:2600::/4865.5k × /64APNICSG13th May 2016
2001:df2:2d00::/4865.5k × /64APNICSG8th Aug 2017
2001:df2:2f40::/4865.5k × /64APNICSG28th Mar 2023
2001:df2:3000::/4865.5k × /64APNICSG30th Aug 2013
2001:df2:a9c0::/4865.5k × /64APNICSG6th Jul 2023
2001:df2:fb40::/4865.5k × /64APNICSG3rd Oct 2023
2001:df3:1180::/4865.5k × /64APNICSG6th Mar 2020
2001:df3:1540::/4865.5k × /64APNICSG31st Oct 2023
2001:df3:3300::/4865.5k × /64APNICSG24th Nov 2017
2001:df3:4f00::/4865.5k × /64APNICSG29th Nov 2017
2001:df3:5600::/4865.5k × /64APNICSG20th Jul 2016
2001:df3:580::/4865.5k × /64APNICSG2nd Mar 2020
2001:df3:5b00::/4865.5k × /64APNICSG1st Dec 2017
2001:df3:6240::/4865.5k × /64APNICSG19th Jan 2024
2001:df3:7800::/4865.5k × /64APNICSG5th Mar 2014
2001:df3:7d40::/4865.5k × /64APNICSG22nd Feb 2024
2001:df3:7f80::/4865.5k × /64APNICSG21st Apr 2020
2001:df3:840::/4865.5k × /64APNICSG16th Oct 2023
2001:df3:9580::/4865.5k × /64APNICSG28th Apr 2020
2001:df3:ae40::/4865.5k × /64APNICSG15th Apr 2024
2001:df3:bf80::/441M × /64APNICSG19th May 2020
2001:df3:c300::/4865.5k × /64APNICSG9th Jan 2018
2001:df3:d080::/4865.5k × /64APNICSG26th May 2020
2001:df4:1080::/4865.5k × /64APNICSG22nd Jun 2020
2001:df4:3580::/4865.5k × /64APNICSG13th Jul 2020
2001:df4:4000::/441M × /64APNICSG12th Apr 2013
2001:df4:4140::/4865.5k × /64APNICSG11th Sept 2024
2001:df4:5180::/4865.5k × /64APNICSG23rd Jul 2020
2001:df4:5440::/4865.5k × /64APNICSG1st Oct 2024