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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

529 blocks match, ordered by prefix.

Allocated but unannounced blocks, 251 to 300 of 529
PrefixAddressesRegistryCountryAllocated
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
2001:df4:6800::/4865.5k × /64APNICSG4th Apr 2014
2001:df4:7600::/4865.5k × /64APNICSG1st Sept 2016
2001:df4:7e00::/4865.5k × /64APNICSG1st Sept 2016
2001:df4:8200::/4865.5k × /64APNICSG1st Sept 2016
2001:df4:9000::/4865.5k × /64APNICSG2nd Oct 2013
2001:df4:b180::/4865.5k × /64APNICSG28th Aug 2020
2001:df4:b7c0::/4865.5k × /64APNICSG4th Dec 2024
2001:df4:c540::/4865.5k × /64APNICSG14th Dec 2024
2001:df4:c800::/4865.5k × /64APNICSG15th Apr 2014
2001:df4:dd00::/4865.5k × /64APNICSG12th Apr 2018
2001:df4:efc0::/4865.5k × /64APNICSG19th Jan 2025
2001:df4:fc0::/4865.5k × /64APNICSG12th Jul 2024
2001:df5:14c0::/4865.5k × /64APNICSG12th Feb 2025
2001:df5:1600::/4865.5k × /64APNICSG15th Sept 2016
2001:df5:2300::/4865.5k × /64APNICSG15th May 2018
2001:df5:4600::/4865.5k × /64APNICSG21st Sept 2016
2001:df5:7880::/4865.5k × /64APNICSG25th Nov 2020
2001:df5:8000::/4865.5k × /64APNICSG26th Mar 2013
2001:df5:8400::/4865.5k × /64APNICSG14th Aug 2015
2001:df5:9300::/4865.5k × /64APNICSG13th Jun 2018
2001:df5:9800::/4865.5k × /64APNICSG6th May 2014
2001:df5:cf80::/4865.5k × /64APNICSG14th Jan 2021
2001:df5:d780::/4865.5k × /64APNICSG20th Jan 2021
2001:df5:d800::/4865.5k × /64APNICSG20th May 2014
2001:df5:e300::/4865.5k × /64APNICSG20th Jul 2018
2001:df6:1400::/4865.5k × /64APNICSG10th Sept 2015
2001:df6:2c40::/4865.5k × /64APNICSG2nd Oct 2025
2001:df6:4740::/4865.5k × /64APNICSG5th Nov 2025
2001:df6:480::/4865.5k × /64APNICSG17th Feb 2021
2001:df6:481::/4865.5k × /64APNICSG26th Oct 2023
2001:df6:6400::/4865.5k × /64APNICSG30th Sept 2015
2001:df6:74c0::/4865.5k × /64APNICSG16th Dec 2025
2001:df6:9180::/4865.5k × /64APNICSG26th Apr 2021
2001:df6:9980::/4865.5k × /64APNICSG30th Apr 2021
2001:df6:9c80::/4865.5k × /64APNICSG4th May 2021
2001:df6:bb00::/4865.5k × /64APNICSG20th Sept 2018
2001:df6:d40::/4865.5k × /64APNICSG28th Aug 2025
2001:df6:d4c0::/4865.5k × /64APNICSG16th Mar 2026
2001:df6:ffc0::/4865.5k × /64APNICSG5th May 2026
2001:df7:2c40::/4865.5k × /64APNICSG3rd Jul 2026
2001:df7:6e80::/4865.5k × /64APNICSG26th Aug 2021
2001:df7:6e81::/4865.5k × /64APNICSG20th Jun 2023
2001:df7:a400::/4865.5k × /64APNICSG25th Nov 2015
2001:df7:b800::/4865.5k × /64APNICSG30th Jul 2014
2001:df7:c000::/46262k × /64APNICSG7th May 2013